[{"content":"For all ICT related questions and problems within FNWI please contact C\u0026amp;CZ.\nHelpdesk \u0026amp; Sysadmin phone room mail +31 24 36 20000 HG00.051 helpdesk@science.ru.nl Visiting address We are located on in the front part of wing 5, ground floor of the Huygens Building (rooms HG00.051, HG00.509 and HG00.545). The helpdesk is available during office hours (8:30 - 17:00). During that time the office is staffed.\nFull address: Huygens Building, HG00.051, Heyendaalseweg 135, 6525 AJ Nijmegen\nPostal address: Radboud University Nijmegen, Faculty of Science, C\u0026amp;CZ, P.O. Box 9010, 6500 GL Nijmegen\nThe page about how to reach the campus also lists all parkings.\nOther helpdesks ILS Helpdesk Contact the ILS Helpdesk for questions about:\nILS managed PC\u0026rsquo;s Printing @ru.nl mail addresses Desk and cell phones Network outlets phone mail web +31 24 36 22222 icthelpdesk@ru.nl https://www.ru.nl/ict-uk/ Students with questions about their Radboud-account or @ru.nl address, please contact Student Affairs directly.\n","permalink":"https://cncz.science.ru.nl/howto/contact/","summary":"\u003cp\u003eFor all ICT related questions and problems within FNWI please contact\nC\u0026amp;CZ.\u003c/p\u003e\n\u003ch2 id=\"helpdesk--sysadmin\"\u003eHelpdesk \u0026amp; \u003ca href=\"../systeemontwikkeling\"\u003eSysadmin\u003c/a\u003e\u003c/h2\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003ephone\u003c/th\u003e\n \u003cth\u003eroom\u003c/th\u003e\n \u003cth\u003email\u003c/th\u003e\n \u003c/tr\u003e\n \u003c/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003ca href=\"tel:\u0026#43;31243620000\"\u003e+31 24 36 20000\u003c/a\u003e\u003c/td\u003e\n \u003ctd\u003e\u003ccode\u003eHG00.051\u003c/code\u003e\u003c/td\u003e\n \u003ctd\u003e\u003ca href=\"mailto:helpdesk@science.ru.nl\"\u003ehelpdesk@science.ru.nl\u003c/a\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003c/tbody\u003e\n\u003c/table\u003e\n\u003ch2 id=\"visiting-address\"\u003eVisiting address\u003c/h2\u003e\n\u003cp\u003eWe are located on in the front part of wing 5, ground floor of the Huygens Building (rooms \u003ccode\u003eHG00.051\u003c/code\u003e, \u003ccode\u003eHG00.509\u003c/code\u003e and \u003ccode\u003eHG00.545\u003c/code\u003e). The helpdesk is available during office hours (8:30 - 17:00).\nDuring that time the office is staffed.\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003eFull address:\nHuygens Building, HG00.051, Heyendaalseweg 135, 6525 AJ Nijmegen\u003c/p\u003e","title":"Contact"},{"content":"Thunderbird (and probably other mail clients) using authenticated SMTP to send e-mail complained about an invalid certificate. This was due to the replacement certificate being signed with another intermediate certificate from our certificate authority (Harica), which temporarilly broke the upchain.\nIt was fixed around quarter to one o\u0026rsquo;clock.\nThis is related to the certificate issues previously described in CPK 1396.\n","permalink":"https://cncz.science.ru.nl/cpk/1427/","summary":"\u003cp\u003eThunderbird (and probably other mail clients) using authenticated SMTP to send\ne-mail complained about an invalid certificate. This was due to the replacement\ncertificate being signed with another intermediate certificate from our\ncertificate authority (Harica), which temporarilly broke the upchain.\u003c/p\u003e\n\u003cp\u003eIt was fixed around quarter to one o\u0026rsquo;clock.\u003c/p\u003e\n\u003cp\u003eThis is related to the certificate issues previously described in \u003ca href=\"/cpk/1396\"\u003eCPK 1396\u003c/a\u003e.\u003c/p\u003e","title":"Sending mail via authenticated smtp failed"},{"content":"A zero day vulnerability in the Linux kernel forced us to reboot a few of the most open to the world servers, other servers will probably reboot as possible with a fixed kernel. We also installed a workaround to mitigate the issue on all servers.\n","permalink":"https://cncz.science.ru.nl/cpk/1426/","summary":"\u003cp\u003eA zero day vulnerability in the Linux kernel forced us to reboot a few of the most open to the world servers, other servers will probably reboot as possible with a fixed kernel.\nWe also installed a workaround to mitigate the issue on all servers.\u003c/p\u003e","title":"Reboot forced on some servers"},{"content":"Since about one week ago, the (central) firewall started to apply internal packet inspection to the regular zone transfers of the internal view of ru.nl. The transfer was then blocked by the firewall before completion, causing our copy of the data, which is required for accessing bass.ru.nl and also internal mail delivery to @ru.nl addresses, to expire after 8 days. This period is relatively short, we have 3 weeks for our own zones, and the effect of expiry was underestimated.\nAfter coordinated effort with our colleagues of ILS networking, we managed to trace the cause back to the firewall and once this was fixed, the zone transfers were working as they were before.\n","permalink":"https://cncz.science.ru.nl/cpk/1425/","summary":"\u003cp\u003eSince about one week ago, the (central) firewall started to apply internal packet inspection to the regular zone transfers of the internal view of \u003ccode\u003eru.nl\u003c/code\u003e. The transfer was then blocked by the firewall before completion, causing our copy of the data, which is required for accessing \u003ccode\u003ebass.ru.nl\u003c/code\u003e and also internal mail delivery to \u003ccode\u003e@ru.nl\u003c/code\u003e addresses, to expire after 8 days. This period is relatively short, we have 3 weeks for our own zones, and the effect of expiry was underestimated.\u003c/p\u003e","title":"Internal zone transfer blocked by firewall"},{"content":"An automatic GitLab update caused a database migration failure, making the service unavailable. We resolved the issue by restarting the database and reconfiguring the GitLab migration.\n","permalink":"https://cncz.science.ru.nl/cpk/1424/","summary":"\u003cp\u003eAn automatic GitLab update caused a database migration failure, making the service unavailable. We resolved the issue by restarting the database and reconfiguring the GitLab migration.\u003c/p\u003e","title":"GitLab unavailable due to failed update"},{"content":"Some time ago C\u0026amp;CZ experimented with remotely managing docker containers. This turned out to be a success and a failure. A success because it filled a niche, and a failure because we had not thought through all the security implications.\nWe are currently looking at launching a new system for managing containers called Uncloud. The security boundary for this will be a virtual machine. I.e. we supply you with a virtual machine with Uncloud running and you and your colleagues can control it using the Uncloud tooling.\nUncloud offers a remote and distinct interface to docker. But it looks very much like docker compose or the (semi-deprecated) docker swarm. And there is good documentation.\nIt also supports clustering, in that mode we give you multiple virtual machines and you decide what runs on what machine (or on all). Currently all ingress is proxied by Caddy and it only supports HTTP, but other protocols is being worked on.\nAs with our previous \u0026ndash; test \u0026ndash; setup you can also interact with Uncloud via GitLab environments, meaning things like deploy-on-green can be made to work automatically.\nOne avenue we are thinking this would be useful is to fully host an entire web-stack, including the database, so that you as user control the entire environment. And for backups of persistent data we provide you with an S3 backup and a ready-made container that backups to it, also taking us out of the loop.\nWe know there is a \u0026ldquo;market\u0026rdquo; for this kind of tooling and we are likely to use it to host internal C\u0026amp;CZ deployments as well, but it would be nice to know if there is demand within the faculty.\nIf you want to learn more and/or be included in the early trials contact us or mail directly.\n","permalink":"https://cncz.science.ru.nl/news/2026-04-15_uncloud/","summary":"\u003cp\u003eSome time ago C\u0026amp;CZ experimented with remotely managing docker containers. This turned out to be a success and a\nfailure. A success because it filled a niche, and a failure because we had not thought through all the\nsecurity implications.\u003c/p\u003e\n\u003cp\u003eWe are currently looking at launching a new system for managing containers called\n\u003ca href=\"https://uncloud.run\" target=\"_blank\"\u003eUncloud\u003c/a\u003e. The security boundary for this will be a virtual machine. I.e. we supply you\nwith a virtual machine with Uncloud running and you and your colleagues can control it using the Uncloud tooling.\u003c/p\u003e","title":"Uncloud for docker cluster management"},{"content":"The latest version of Maple, Maple2026, for Windows/macOS/Linux can be found on the Install network share and has been installed on C\u0026amp;CZ managed Linux computers. License codes can be requested from C\u0026amp;CZ helpdesk or postmaster.\n","permalink":"https://cncz.science.ru.nl/news/2026-04-10_maple-new-version-maple2026/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/maple/\"\u003eMaple\u003c/a\u003e, Maple2026, for\nWindows/macOS/Linux can be found on the\n\u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e network share and has been installed\non C\u0026amp;CZ managed Linux computers. License codes can be requested from\nC\u0026amp;CZ helpdesk or postmaster.\u003c/p\u003e","title":"Maple new version Maple2026"},{"content":"Technical update for mail‑domain DNS administrators What and why we are doing this With the new setup we are renaming our mail‑component servers so that their names reflect the function they perform in the mail chain.\nThis change has no impact on end users, but it makes troubleshooting and future feature implementation easier because we can immediately identify the machine involved.\nFirst step We have renamed mx3 to inboundmx3. Because this is essentially only a DNS change, we have also updated all MX records we manage. Domains for which we provide mail but do not control the DNS must be updated by their own administrators.\nCurrent records:\nIN\tMX 5\tmx1.science.ru.nl. IN\tMX 5\tmx2.science.ru.nl. IN\tMX 5\tmx3.science.ru.nl. should be changed to\nIN\tMX 5\tmx1.science.ru.nl. IN\tMX 5\tmx2.science.ru.nl. IN\tMX 5\tinboundmx3.science.ru.nl. What’s next The next rename will probably take place next month. We are not doing everything at once because we have three MX records; if one fails, the next one is chosen automatically. After each change we will monitor the system, and only proceed when everything works as expected. This staged approach ensures that, even if a change introduces a problem, mail will still be delivered via the remaining two routes.\n","permalink":"https://cncz.science.ru.nl/news/2026-03-12_mail-update2/","summary":"\u003ch3 id=\"technical-update-for-maildomain-dns-administrators\"\u003eTechnical update for mail‑domain DNS administrators\u003c/h3\u003e\n\u003ch4 id=\"what-and-why-we-are-doing-this\"\u003eWhat and why we are doing this\u003c/h4\u003e\n\u003cp\u003eWith the new setup we are renaming our mail‑component servers so that their\nnames reflect the function they perform in the mail chain.\u003c/p\u003e\n\u003cp\u003eThis change has \u003cstrong\u003eno impact on end users\u003c/strong\u003e, but it makes troubleshooting and\nfuture feature implementation easier because we can immediately identify the\nmachine involved.\u003c/p\u003e\n\u003ch4 id=\"first-step\"\u003eFirst step\u003c/h4\u003e\n\u003cp\u003eWe have renamed \u003ccode\u003emx3\u003c/code\u003e to \u003ccode\u003einboundmx3\u003c/code\u003e. Because this is essentially only a DNS\nchange, we have also updated all MX records we manage. Domains for which we\nprovide mail but do not control the DNS must be updated by their own\nadministrators.\u003c/p\u003e","title":"Science Mail Technical Update"},{"content":"A planned reboot of one of the science firewalls at 10:30 should normally have been unnoticable, however, after the firewall came back online, the keepalived service failed to start, which prevented the firewall’s virtual IP from being advertised. As a result, traffic to several internal services appeared to hang.\nThe issue was resolved by manually starting the keepalived daemon at 10:51.\n","permalink":"https://cncz.science.ru.nl/cpk/1423/","summary":"\u003cp\u003eA planned reboot of one of the science firewalls at 10:30 should normally have been unnoticable, however, after the firewall came back online, the \u003cstrong\u003ekeepalived\u003c/strong\u003e service failed to start, which prevented the firewall’s virtual IP from being advertised. As a result, traffic to several internal services appeared to hang.\u003c/p\u003e\n\u003cp\u003eThe issue was resolved by manually starting the keepalived daemon at 10:51.\u003c/p\u003e","title":"Scheduled firewall reboot broke keepalive service"},{"content":"For a long time, at least since before Covid-19, we have hosted a local jitsi meet installation.\nThe installation was becoming a bit old and stuffy, so time for a new version and a new name.\nMeet is our new jitsi install for general use. Jitsi Test is our test jitsi install, when we test new features here, so can you. The *old jitsi will be retired soon, so please go try the new one.\n","permalink":"https://cncz.science.ru.nl/news/2026-03-03_jitsi-meet/","summary":"\u003cp\u003eFor a long time, at least since before Covid-19, \u003ca href=\"https://jitsivm.science.ru.nl\" target=\"_blank\"\u003ewe have hosted\u003c/a\u003e a local \u003ca href=\"https://meet.jit.si\" target=\"_blank\"\u003ejitsi meet\u003c/a\u003e installation.\u003c/p\u003e\n\u003cp\u003eThe installation was becoming a bit old and stuffy, so time for a new version and a new name.\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https://meet.science.ru.nl\" target=\"_blank\"\u003eMeet\u003c/a\u003e is our \u003cem\u003enew\u003c/em\u003e jitsi install for general use.\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://jt.science.ru.nl\" target=\"_blank\"\u003eJitsi Test\u003c/a\u003e is our \u003cem\u003etest\u003c/em\u003e jitsi install, when we test new features here, so can you.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eThe *\u003ca href=\"https://jitsivm.science.ru.nl\" target=\"_blank\"\u003eold jitsi\u003c/a\u003e will be retired soon, so please go try the new one.\u003c/p\u003e","title":"Self-hosted Jitsi update"},{"content":"Enhanced Email Security We are pleased to announce we have completed the first step in the update to our email system. This will improve the security and reliability of your mail handling. As part of this upgrade, we have introduced new software at the start of our email flow (on the inbound MX servers). This advanced system now evaluates incoming emails to determine if they are legitimate.\nIf an email fails to meet the required standards or appears very suspicious, it will be blocked at the entry point, in accordance with RFC guidelines for mail transport. This is a crucial first step toward creating a safer and more secure email environment for everyone.\nHow It Works The new system assesses each incoming email based on a variety of industry standard criteria to determine its legitimacy. If we are confident that an email is not legitimate, it will be blocked. This helps reduce the risk of phishing attempts, and other malicious content, reaching your inbox.\nYour Support Needed To ensure the best possible experience with this new system, we need your help. We have already identified a number of legitimate mailing list servers that we know are trustworthy. However, if you receive emails from a known mailing list server that is not yet on our list, please let us know so we can add it. This will help reduce the chances of legitimate emails being mistakenly flagged as suspicious.\nNext Steps We are currently in the starting phase of this new system and will be working to refine its settings over time. For now we are focused on blocking opius Evil mails as soon as possible, but this new software is also capable of doing mail content filtering. As the system becomes more sophisticated, we will be able to differentiate between legitimate mailing lists and fake ones with greater precision.\nYour feedback is invaluable during this transition period. If you encounter any issues or have suggestions on how we can improve the system, please don\u0026rsquo;t hesitate to reach out.\nThank you for your understanding and cooperation as we work to create a safer email environment.\n","permalink":"https://cncz.science.ru.nl/news/2026-02-09_mail-update1/","summary":"\u003ch3 id=\"enhanced-email-security\"\u003eEnhanced Email Security\u003c/h3\u003e\n\u003cp\u003eWe are pleased to announce we have completed the first step in the update to our email system. This will improve the security and reliability of your mail handling. As part of this upgrade, we have introduced new software at the start of our email flow (on the inbound MX servers). This advanced system now evaluates incoming emails to determine if they are legitimate.\u003c/p\u003e\n\u003cp\u003eIf an email fails to meet the required standards or appears very suspicious, it will be blocked at the entry point, in accordance with RFC guidelines for mail transport. This is a crucial first step toward creating a safer and more secure email environment for everyone.\u003c/p\u003e","title":"Science Mail Update"},{"content":"At the start of this year we installed a high-performance server (512 GB memory, two high-end GPUs). This machine now hosts local large-language models LLMs, meaning the AI runs entirely on‑premise and your data never leaves our network.\nWhat you can do today Access the web UI at chat.science.ru.nl. Log in with your Science RU username (e.g., jdoe, not jdoe@science.ru.nl). The service is powered by Ollama and Open WebUI, providing a clean, responsive chat interface. Early tests show reliable speech‑to‑text (including Dutch) and the ability to review source code. A user experience that feels very close to the larger commercial models, even though we are currently using open‑source models a few generations older. Current status - experimental We don\u0026rsquo;t know how many concurrent users the system can support and how much persistent storage will be required. No automated backups are in place; please treat the data you store there as temporary. Uptime is not guaranteed. The service may need to be restarted or the server rebooted when we apply configuration changes or updates. The setup will evolve as we gather feedback, so your input is valuable. Which models are available? Browse the full catalog on ollama.com/search. At the moment we run two modes: gpt‑oss and deepseek-r1 , but others can be added on request. We ran deepseek-r1:671b, but this model is too large for the machine we have.\nHow to help Report bugs, performance issues, or feature requests to C\u0026amp;CZ Share use‑cases that work well – they help us prioritise future improvements. We look forward to seeing how you put this on‑premise AI capability to work in your projects!\nUpdate 13 Apr 2026 We\u0026rsquo;ve replaced gtp-oss:120b with gemma4:31b, which is a much smaller, but more capable model. As we have two GPUs, we can only run two models concurrently.\n","permalink":"https://cncz.science.ru.nl/news/2026-02-05_local_llm_chat/","summary":"\u003cp\u003eAt the start of this year we installed a high-performance server (512 GB memory, two high-end GPUs). This machine now hosts local large-language models \u003ca href=\"https://en.wikipedia.org/wiki/Large_language_model\" target=\"_blank\"\u003eLLMs\u003c/a\u003e, meaning the AI runs entirely on‑premise and your data never leaves our network.\u003c/p\u003e\n\u003ch2 id=\"what-you-can-do-today\"\u003eWhat you can do today\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAccess the web UI at \u003ca href=\"https://chat.science.ru.nl\" target=\"_blank\"\u003echat.science.ru.nl\u003c/a\u003e. Log in with your Science RU username (e.g., jdoe, not \u003ca href=\"mailto:jdoe@science.ru.nl\"\u003ejdoe@science.ru.nl\u003c/a\u003e).\u003c/li\u003e\n\u003cli\u003eThe service is powered by \u003ca href=\"https://ollama.com/\" target=\"_blank\"\u003eOllama\u003c/a\u003e and \u003ca href=\"https://openwebui.com/\" target=\"_blank\"\u003eOpen\nWebUI\u003c/a\u003e, providing a clean, responsive chat interface.\u003c/li\u003e\n\u003cli\u003eEarly tests show reliable \u003cem\u003espeech‑to‑text\u003c/em\u003e (including Dutch) and the ability to \u003cem\u003ereview source code\u003c/em\u003e. A user experience that feels very close to the larger commercial models, even though we are currently using open‑source models a few generations older.\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch2 id=\"current-status---experimental\"\u003eCurrent status - experimental\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWe don\u0026rsquo;t know how many concurrent users the system can support and how much persistent storage will be required.\u003c/li\u003e\n\u003cli\u003eNo automated backups are in place; please treat the data you store there as temporary.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cul\u003e\n\u003cli\u003eUptime is not guaranteed. The service may need to be restarted or the server rebooted when we apply configuration changes or updates.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cul\u003e\n\u003cli\u003eThe setup will evolve as we gather feedback, so your input is valuable.\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch2 id=\"which-models-are-available\"\u003eWhich models are available?\u003c/h2\u003e\n\u003cp\u003eBrowse the full catalog on \u003ca href=\"https://ollama.com/search\" target=\"_blank\"\u003eollama.com/search\u003c/a\u003e. At the moment we run two modes:\n\u003cstrong\u003e\u003cem\u003egpt‑oss\u003c/em\u003e\u003c/strong\u003e and \u003cstrong\u003e\u003cem\u003edeepseek-r1\u003c/em\u003e\u003c/strong\u003e , but others can be added on request. We ran \u003cstrong\u003e\u003cem\u003edeepseek-r1:671b\u003c/em\u003e\u003c/strong\u003e, but\nthis model is too large for the machine we have.\u003c/p\u003e","title":"New on-premise LLM service, available for all Science Students and Staff"},{"content":"After an upgrade on Feb 3, the DIY service kept an old process running, so self‑service account creation failed. 12 users hit the “account creation failed” error between 12:01 AM and 9:33 AM. The process was restarted, the new version took over and login creation works again. Sorry for the hassle!\n","permalink":"https://cncz.science.ru.nl/cpk/1422/","summary":"\u003cp\u003eAfter an upgrade on Feb 3, the DIY service kept an old process running, so self‑service account creation failed.\n12 users hit the “account creation failed” error between 12:01 AM and 9:33 AM.\nThe process was restarted, the new version took over and login creation works again.\nSorry for the hassle!\u003c/p\u003e","title":"Self‑creating login broken on DIY"},{"content":"We are working on replacing our incoming mailservers and something went wrong.\nDue to an unexpected block in the mail flow, around 2800 mails which were queued from around 18:00 on Feb 2nd, were lost. The host queuing the mail, was replaced on Feb 3rd, around 8:30 and decommissioned at around 9:00. Unfortunately, the decommissioning also destroyed the disk of the server with the mail queue of around 2800 e-mails.\nAt 18:00 on Feb 2nd, two servers were accepting incoming mail, but only one of the servers was queuing, the other one was running as expected.\nThe queued mails where to be scanned for spam/malware by Microsoft EOP and then flow further.\nThese are the new mailservers with different software than before in order to better handle modern e-mail senders, we are focussed on correctly handling the incoming mails, and were not expecting not to be able to transfer mail further, since this was already tested and working well.\nUnfortunately, this focus on the incoming side made us miss this issue with the next step, for which we are very sorry!\n","permalink":"https://cncz.science.ru.nl/cpk/1421/","summary":"\u003cp\u003eWe are working on \u003ca href=\"https://cncz.science.ru.nl/news/2026-01-26_mail-announcement/\" target=\"_blank\"\u003ereplacing our incoming mailservers\u003c/a\u003e and something went wrong.\u003c/p\u003e\n\u003cp\u003eDue to an unexpected block in the mail flow, around 2800 mails which were\nqueued from around 18:00 on Feb 2nd, were lost.\nThe host queuing the mail, was replaced on Feb 3rd, around 8:30 and\ndecommissioned at around 9:00.\nUnfortunately, the decommissioning also destroyed the disk of the server with the mail queue of around 2800 e-mails.\u003c/p\u003e\n\u003cp\u003eAt 18:00 on Feb 2nd, two servers were accepting incoming mail, but only one of\nthe servers was queuing, the other one was running as expected.\u003c/p\u003e","title":"Mail Lost between 18:00 2 Feb 2026 and 9:00 3 Feb 2026"},{"content":"C\u0026amp;CZ was the first to implement e-mail (@sci.kun.nl) at the KUN (Katholieke Universiteit Nijmegen), some 35 years ago. Some configurations we have used since then have not kept up with the changing landscape of e-mail implementations worldwide. In Dutch there\u0026rsquo;s a saying for this: \u0026ldquo;De wet van de remmende voorsprong\u0026rdquo;.\nOne of the major things that have changed over time is dealing with SPAM. For instance, there are now protocols that major e-mail players require and therefore became the de facto standard for email communication.\nWhile we already include the necessary protocol information in the emails we send, we do not currently apply these protocols to incoming email. This limitation exists because our current tooling does not support them.\nFor this reason, we plan to replace the existing tooling. The new setup will improve our ability to block spam and reliably accept legitimate email. However, this change may also require discontinuing support for certain features that were introduced many years ago and are no longer compatible with modern standards.\nIn the early days of email, forwarding messages from one provider to another was a common practice. Today, however, the protocols used to verify the legitimacy of email messages make forwarding between providers difficult and, in many cases, unreliable.\nWe currently maintain approximately 16,000 forwarding rules (aliases). Our goal is to reduce this number as much as possible and to ensure that any remaining forwarding rules function correctly in accordance with current, globally accepted email standards.\nTL;DL: In the coming months, we are updating the science email system to align with current, real-world email standards and practices.\n","permalink":"https://cncz.science.ru.nl/news/2026-01-26_mail-announcement/","summary":"\u003cp\u003eC\u0026amp;CZ was the first to implement e-mail (@sci.kun.nl) at the KUN (Katholieke Universiteit Nijmegen), some 35 years ago. Some configurations we have used since then have not kept up with the changing landscape of e-mail implementations worldwide. In Dutch there\u0026rsquo;s a saying for this: \u0026ldquo;De wet van de remmende voorsprong\u0026rdquo;.\u003c/p\u003e\n\u003cp\u003eOne of the major things that have changed over time is dealing with SPAM. For instance, there are now protocols that major e-mail players require and therefore became the de facto standard for email communication.\u003c/p\u003e","title":"Science Mail Announcement"},{"content":"A new, for now experimental, feature is live on DIY, where you can \u0026ldquo;order\u0026rdquo; services directly by clicking the + on the right side.\nOrdering a product. This includes:\nAccounts: temporary logins, new groups, or guest accounts. Storage: new volumes or cloud endpoints on volumes. Email: create new aliases and mailman lists. Contact us: send an email to the helpdesk. Some services are directly provisioned, for others we still send an email to helpdesk@science.ru.nl where we need to implement the request manually.\nIf you find something that is not working properly or you think of anything else that should be automated in this way please let us know.\n","permalink":"https://cncz.science.ru.nl/news/2026-01-19_diy_products/","summary":"\u003cp\u003eA new, for now experimental, feature is live on \u003ca href=\"https://diy.science.ru.nl\" target=\"_blank\"\u003eDIY\u003c/a\u003e, where you can\n\u0026ldquo;order\u0026rdquo; services directly by clicking the + on the right side.\u003c/p\u003e\n\u003cfigure\u003e\n \u003cimg loading=\"lazy\" src=\"/img/2026/product-plus.png\"/\u003e \u003cfigcaption\u003e\n Ordering a product.\n \u003c/figcaption\u003e\n\u003c/figure\u003e\n\n\u003cp\u003eThis includes:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eAccounts: temporary logins, new groups, or guest accounts.\u003c/li\u003e\n\u003cli\u003eStorage: new volumes or \u003ca href=\"https://cncz.science.ru.nl/news/2024-06-26-rclone/\" target=\"_blank\"\u003ecloud endpoints\u003c/a\u003e on volumes.\u003c/li\u003e\n\u003cli\u003eEmail: create new aliases and mailman lists.\u003c/li\u003e\n\u003cli\u003eContact us: send an email to the helpdesk.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eSome services are directly provisioned, for others we still send an email to \u003ca href=\"mailto:helpdesk@science.ru.nl\"\u003ehelpdesk@science.ru.nl\u003c/a\u003e where we\nneed to implement the request manually.\u003c/p\u003e","title":"Order services directly on DIY"},{"content":"Elabftw had an expired certificate, because after the move to a new server, this process was left unmonitored. Both the certificate and the monitoring are now fixed.\n","permalink":"https://cncz.science.ru.nl/cpk/1420/","summary":"\u003cp\u003eElabftw had an expired certificate, because after the move to a new server,\nthis process was left unmonitored. Both the certificate and the monitoring are\nnow fixed.\u003c/p\u003e","title":"Certificate expired on Elabftw"},{"content":"Some websites under science.ru.nl may be inaccessible Several users have reported that they can no longer access websites such as http://example.science.ru.nl. Browsers block these connections because the parent domain ru.nl now requires HTTPS, while some websites, often served directly from devices or sensors, do not support encrypted connections.\nWe are working on a general solution and will update this article once it becomes available.\nBackground: HTTP Strict Transport Security (HSTS) Modern browsers enforce HTTP Strict Transport Security (HSTS) to prevent unencrypted HTTP access. Domains can opt in by being listed on hstspreload.org. Once listed, all subdomains must use HTTPS, and browsers will block HTTP entirely.\nThe domain ru.nl was added to the HSTS preload list in November 2025. This enforces HTTPS for all subdomains, including *.science.ru.nl. While this improves security, it causes issues for simple or embedded web servers that cannot support HTTPS.\nPossible workarounds:\nAccessing the site via its IP address Using an alternative domain via a local hosts file Disabling HSTS in a specific browser (not recommended) ","permalink":"https://cncz.science.ru.nl/news/2026-01-15_hsts_ru_nl/","summary":"\u003ch2 id=\"some-websites-under-sciencerunl-may-be-inaccessible\"\u003eSome websites under science.ru.nl may be inaccessible\u003c/h2\u003e\n\u003cp\u003eSeveral users have reported that they can no longer access websites such as \u003ccode\u003ehttp://example.science.ru.nl\u003c/code\u003e.\nBrowsers block these connections because the parent domain ru.nl now requires HTTPS, while some websites, often served directly from devices or sensors, do not support encrypted connections.\u003c/p\u003e\n\u003cp\u003eWe are working on a general solution and will update this article once it becomes available.\u003c/p\u003e\n\u003ch2 id=\"background-http-strict-transport-security-hsts\"\u003eBackground: HTTP Strict Transport Security (HSTS)\u003c/h2\u003e\n\u003cp\u003eModern browsers enforce HTTP Strict Transport Security (HSTS) to prevent unencrypted HTTP access. Domains can opt in by being listed on hstspreload.org.\nOnce listed, all subdomains must use HTTPS, and browsers will block HTTP entirely.\u003c/p\u003e","title":"HSTS on ru.nl"},{"content":"A combination of small failures in configuration and monitoring resulted in Daily backups not being run on peck between September 1st and last Friday. Backups are now running again, but other than the Monthly backups, there are no intermediate Daily backups for the volumes on server peck. Updates in monitoring/testing are in progress to prevent this kind of oversight in the future.\n","permalink":"https://cncz.science.ru.nl/cpk/1419/","summary":"\u003cp\u003eA combination of small failures in configuration and monitoring resulted in Daily backups not being run on peck between September 1st and last Friday. Backups are now running again, but other than the Monthly backups, there are no intermediate Daily backups for the volumes on server \u003ccode\u003epeck\u003c/code\u003e.\nUpdates in monitoring/testing are in progress to prevent this kind of oversight in the future.\u003c/p\u003e","title":"Daily backups on peck failed"},{"content":"For years now Gitlab has bundled Mattermost as an integrated component for online chats, however this situation is changing, and Mattermost has announced that it is dropping support for single-sign-on (SSO). This is turn makes the integration with Gitlab unusable, thus Gitlab is now pondering dropping support altogether.\nThis is unfortunate timing as we are working on tighter integration between science groups and Mattermost channels.\nProvisional Plan So what are we going to do about this? For chat, we have been looking at Zulip for a while now. This a stand alone, 100% open source chat server that works just like Mattermost. It\u0026rsquo;s supports OpenID, so we can hook up to diy for SSO.\nRegarding Git(lab), we like the light-weight Git hosting (called forges), like forgejo, that powers codeberg.org.\nAs said, nothing is set in stone, but seeing the route Gitlab is taking we will probably move to alternative sooner rather than later.\nSunsetting Gitlab/Mattermost? It looks like Gitlab is acting prudently, but there is a chance that (our automated) Gitlab upgrade, wrecks Matttermost\u0026rsquo;s SSO authentication. If this happens logging into Mattermost stops working. C\u0026amp;CZ will likely have Zulip up and running before that time.\nFor Gitlab things won\u0026rsquo;t change much in the immediately future, longer term - and if we actually have an alternative - it will be set read-only and we will migrate off of it, to another forge, like the aforementioned Forgejo.\n","permalink":"https://cncz.science.ru.nl/news/2025-12-01_mattermost/","summary":"\u003cp\u003eFor years now Gitlab has bundled Mattermost as an integrated component for online chats, however this\nsituation is changing, and Mattermost has\n\u003ca href=\"https://forum.mattermost.com/t/mattermost-v11-changes-in-free-offerings/25126\" target=\"_blank\"\u003eannounced\u003c/a\u003e that it is dropping\nsupport for single-sign-on (SSO). This is turn makes the integration with Gitlab unusable, thus Gitlab is now\n\u003ca href=\"https://docs.mattermost.com/product-overview/editions-and-offerings.html#mattermost-team-edition\" target=\"_blank\"\u003epondering\u003c/a\u003e\ndropping support altogether.\u003c/p\u003e\n\u003cp\u003eThis is unfortunate timing as we are working on tighter integration between science groups and Mattermost\nchannels.\u003c/p\u003e\n\u003ch2 id=\"provisional-plan\"\u003eProvisional Plan\u003c/h2\u003e\n\u003cp\u003eSo what are we going to do about this? For chat, we have been looking at \u003ca href=\"https://zulip.com/\" target=\"_blank\"\u003eZulip\u003c/a\u003e for a\nwhile now. This a stand alone, 100% open source chat server that works just like Mattermost. It\u0026rsquo;s supports\n\u003ca href=\"https://openid.net/\" target=\"_blank\"\u003eOpenID\u003c/a\u003e, so we can hook up to \u003ca href=\"https://diy.science.ru.nl\" target=\"_blank\"\u003ediy\u003c/a\u003e for SSO.\u003c/p\u003e","title":"Mattermost and Gitlab"},{"content":"Computer cluster architecture The clusternodes that we manage for the various departments are all connected to the network, but not all are in the same subnet/vlan. We strive to keep the nodes of a single group in the same vlan to optimise internal network traffic. Connectivity with the storage servers for shares and homedirectories is always routed through the firewall, thus it is less performant than a local server and much less performant than local (within the server) storage on /scratch.\nTip\nFor intermidiate results using the local /scratch will be much, much faster than using your home directory. Using your home directory a lot from a job, can impact other folks using that server.\nDepending on the kind of job, performance can depend a lot on the speed with which data can be read or written to disk. If your jobs are I/O bound like this, make sure to keep the I/O operations local as much as possible during the job and only store the results on the network shares after completing the calculations. If a source dataset is too large to be copied to local storage, read the data in large batches and write intermediate results to local /scratch storage. Failing to set up a job like this wastes resources (the CPU must wait a lot) and can hurt other users of the shared storage servers.\nSLURM batch software The Science cn-cluster uses SLURM for batch management. The cluster consists of 2 parts, determined by the ubuntu version, each has its own login node. Currently we have\nLogin node Ubuntu version number of nodes cnlogin22 ubuntu 22.04 97 cnlogin24 ubuntu 24.04 25 Typically you login to the login node and use that to submit your jobs. Don\u0026rsquo;t run jobs on the cnlogin nodes, this will hurt other users.\nTerminology term meaning node A node is a single machine in the cluster. cluster A cluster exists of a set of nodes. partition A partition is a defined subset of nodes of the whole cluster. Next to being a subset a ‘partition’ can also limit a job’s resources. Per partition, only people in certain unix groups are allowed to run jobs on this partition. job A job is typically run in a partition of the cluster. job step A job step, is a (possibly parallel) task within a job. Slurm cheat sheets Summary of SLURM commands Equivalent batch commands in popular batch systems Partitions Jobs always run within a partition.\nThe partitions for groups with their own nodes can only be used by members of these groups. These partitions usually have high priority and can run infinitely long (MaxTime=INFINITE). Jobs in these partitions will suspend jobs submitted in the partition “all” and the low priority partition “heflowprio”.\nPartitionName=tcm Nodes=cn../.. AllowGroups=tcm Priority=10 PartitionName=hef Nodes=cn../.. AllowGroups=ehef,thef Priority=10 PartitionName=heflowprio Nodes=../.. AllowGroups=ehef,thef Priority=1 PartitionName=milkun Nodes=cn../.. AllowGroups=milkun Priority=10 PartitionName=thchem Nodes=cn../.. AllowGroups=thchem Priority=10 To see a list of all partitions with their properties:\nscontrol -a show partitions To see a list of only the partitions you can use:\nscontrol show partitions To list a specific partition:\nscontrol show partition cnczshort Jobs in the cnczshort partition also get high priority, but they will be killed if they run more than 12 hours.\nPartitionName=cnczshort Nodes=cn13 MaxTime=12:00:00 Priority=10 Preemptmode=REQUEUE There also is a cncz partition, that may be used by all cluster users for jobs that run less than a week, it has low priority:\nPartitionName=cncz Nodes=cn13 Priority=2 MaxTime=7-00:00:00 There also is an all partition with all nodes, this has the lowest priority, max 12 hours running jobs and a memory limit of 2 GB:\nPartitionName=all MaxTime=12:00:00 MaxMemPerCPU=2048 Priority=1 Info\nTo prevent accidents, before using the all queue, please obtain permission from other groups to use their nodes and contact C\u0026amp;CZ for access to the clusterall unix group. Use of this queue is restricted to members of the clusterall group.\nIt is wise to provide the partition as an option either on the command line as -p partitionname or in the shell script by including a line:\n#SBATCH --partition=partitionname Tutorial Submitting your first job To execute your job on the cluster you need to write it in the form of a shell script (don’t worry this is easier than it sounds). A shell script in its most basic form is just a list of commands that you would otherwise write on the command line. The first line of the script should contain an instruction telling the system which type of shell is supposed to execute it. Unless you really need something else you should always use bash. So without further ado here is your first shell script.\n#! /bin/bash #SBATCH --partition=cnczshort sleep 60 echo \u0026#34;Hello world!\u0026#34; Type this into an editor and save it as hello.sh. To execute this on the login node give it executable permissions (not needed when submitting):\n$ chmod u+x hello.sh and run it:\n$ ./hello.sh It will print Hello world to stdout (the screen). If anything goes wrong an error message will be sent to stderr which in this case is also the screen.\nTo execute this script as a job on one of the compute nodes we submit it to the cluster scheduler slurm. This is done with the command sbatch:\n$ sbatch hello.sh The scheduler will put your job in the named job partition and respond by giving you the job number (10 in this example):\nSubmitted batch job 10\nYour job will now wait until a slot on one of the compute nodes becomes available. Then it will be executed and the output is written to a file slurm-10.out in your home directory, unless you specify otherwise as explained later.\nInspecting jobs At any stage after submitting a job, while it is running, you may inspect its status with squeue:\n$ squeue --job 10 It will print some information including its status which can be:\nstatus meaning PD pending R running S suspended It will also show the name of the job script, the user who submitted it and the time used so far. To see full information about your job use the scontrol command:\n$ scontrol show job 10 You can get a quick overview of how busy the cluster is with:\n$ squeue Which lists all jobs sorted by the nodes they are running on.\nTo get detailed information on a specific Jobid:\n$ scontrol show job -dd Jobid As a shorthand for this one can use:\nsjob Jobid You may use the scontrol command to get information about the compute nodes e.g. the number of CPU’s, available memory and requestable resources such as gpus if available.\n$ scontrol show nodes You may use the sinfo command to get information on nodes and partitions:\n$ sinfo -l A useful overview of the state of all nodes usable by you can be achieved with:\n$ sinfo -Ne -o \u0026#34;%.20n %.15C %.8O %.7t %25f\u0026#34; | uniq As a shorthand for this one can use:\nsnodes A useful overview of the state of all nodes can be achieved with:\n$ sinfo -a -Ne -o \u0026#34;%.20n %.15C %.8O %.7t %25f\u0026#34; | uniq Finally there is the sall command that gives a quick overview of all jobs on the cluster. It supports the -r, -s and -p flags for running, suspended and pending jobs respectively.\n$ sall -r Understanding job priority The scheduler determines which job to start first when resources become available based on the job’s relative priority. This is a single floating point number calculated from various criteria.\nJob priority is currently calculated based on the following criteria:\n* queue time, jobs that are submitted earlier get a higher priority; * jobs relative size, larger jobs requesting more resources such as nodes and CPUs get a higher priority because they are harder to schedule; * fair share, the priority of jobs submitted by a user increases or decreases depending on the resources (CPU time) consumed in the last week. With the sprio -w command you can view the current weights used in the priority computation.\nJob priority formula:\nJob_priority = (PriorityWeightAge) * (age_factor) + (PriorityWeightFairshare) * (fair-share_factor) + (PriorityWeightJobSize) * (job_size_factor) The sall command, when used in combination with the -p flag lists the jobs priority as well as an estimated start time.\nDeleting jobs If, after submitting a job, you discover that you made a mistake and want to delete your job you may do so with.\n$ scancel 10 Submitting multiple jobs Sometimes you may be able to split your job into multiple independent tasks. For instance when you need to perform the same analysis on multiple data files. Splitting this work up into multiple tasks helps because they can then run simultaneously on different compute nodes. Now this could be accomplished by writing a loop that generates and submits job scripts but an easier approach is to use array jobs. When calling sbatch with the --array flag an array job consisting of multiple tasks is submitted to the scheduler. The number of the current task is available to the scripts execution environment as $SLURM_ARRAY_TASK_ID.\nSo for example the following test_array_job.sh script:\n#! /bin/bash #SBATCH --partition=tcm echo This is task $SLURM_ARRAY_TASK_ID Can be submitted with:\n$ sbatch --array 1-4 ./test_array_job.sh The four tasks in this job will now be executed independently with the same script, the only difference being the value of $SLURM_ARRAY_TASK_ID.\nThis value can be used in the script to for instance select different input files for your data reduction as in:\n#! /bin/bash my_command ~/input-$SLURM_ARRAY_TASK_ID Do note however that the tasks will not necessarily be executed in order so they really need to be independent!\nAdvanced topics Limiting the number of simultaneous tasks If you submit a large array job (containing more than say a hundred tasks) you may want to limit the number of simultaneous task executions. You may do this using the % flag.\nsbatch --array 1-1000%20 ./test_array_job.sh This will ensure at maximum 20 tasks run at the same time.\nSetting scheduler parameters in the job script Instead of entering all flags to sbatch on the command line one can also choose to write them into the job script itself. For this simply prefix them with #SBATCH. This is especially useful for flags described in the following sections.\nChanging the default logging location By default standard output and error are written to a file named by the process number in your home directory. This can be changed with the --output and (optionally) --error flags.\n#! /bin/bash # Choose partition to run job in #SBATCH --partition=hef # Send output to test.log in your home directory #SBATCH --output ~/test.log Getting email updates about your job Constantly watching squeue output to see when your job starts running and when it’s done is not very efficient. Fortunately you can also request the scheduler to send you email in these situations.\n#! /bin/bash #SBATCH --mail-type=ALL #SBATCH --mail-user=\u0026lt;your mail address\u0026gt; This will get you email when your job begins, ends or fails. If you only want email when it is done you can use --mail-type=END.\nTime limits To allow the scheduler to efficiently distribute the available compute time each job has a one hour time limit. If your job exceeds its limit (counted from the moment execution started on the compute node) it will be killed automatically. Now what if you know your job will need more than one hour to complete? In this case you can simply request more time with the --time flag.\nSo for instance if you expect to need 12 hours of compute time for your job add the following to your script.\n#! /bin/bash #SBATCH --time=12:00:00 For multi-day walltime you can simply add an extra days field as in --time=DD-HH:MM:SS.\nMemory If your job needs an excessive amount of memory to run you should request it using\n#! /bin/bash #SBATCH --mem=64G For 64GB as an example. Please only use this if you know for certain that your job needs much more than 8GB of memory!\nNodes and cores If your code uses parallelization using threads, OpenMP or MPI for instance, you may want to request more CPU resources. This can be in the form of more than one core on a single machine / node, more than one machine or a combination of both. These resources are requested with the -N flag combined with the -n flag as follows.\n#! /bin/bash #SBATCH -N 1 -n 8 Requests 8 cores on one node.\n#! /bin/bash #SBATCH -N 10 -n 16 Requests 16 cores divided over 10 compute nodes (16 cores in total). Note that this helps only if your code is parallelized! Even if you think it is, it may still be disabled due to compile time selections so always check! For instance by running it briefly on the login node and inspecting CPU usage with top, if it rises above 100% it uses some kind of parallelization.\nFor MPI jobs you may only care about the total number of CPU cores used, not about if they are located on one machine or distributed over the system. Then you may use the -n flag by itself instead.\nRequesting large amounts of cores and or nodes will reduce the probability that your job can be scheduled at each scheduling interval thereby pushing its start time further into the future so only request what you need!\nAdvanced node selection Sometimes you may need more control over which nodes are used (for instance when your data is located in its /scratch. You can specify explicit node names with the -w flag (optionally multiple comma separated) as follows.\n#! /bin/bash #SBATCH -N 2 -n 4 -w cn90,cn91 This will request 4 cores on cn90 and cn91.\nExamples Here are a couple of example scripts (feel free to add your own). Unless otherwise stated just save them as my_job.sh and submit them to the scheduler with.\n$ sbatch my_job.sh Run a Python script This job script, when submitted, executes a Python script ~/my_script.py on a random available node.\n#! /bin/bash /usr/bin/python ~/my_script.py Process a list of data files using an array job Let’s say filenames.txt is a text file containing 100 file names you wish to process. For instance created with:\nls *.dat \u0026gt; filenames.txt You may now combine array jobs with clever use of the awk command to select the current filename from this file.\nSubmit the following script with sbatch –array 1-100 my_job_script.sh.\n#! /bin/bash # # Each task needs 1.5 hours of runtime #SBATCH --time=01:30:00 # INPUT_FILE=`awk \u0026#34;NR==$SLURM_ARRAY_TASK_ID\u0026#34; filenames.txt` # my_command $INPUT_FILE Run a large data reduction job This is an example of a job that needs a significant amount of resources on a single specific node. Using cn90 in this example:\n#! /bin/bash # # Request 10 CPU cores and 64GB of memory for 7 days on cn90 #SBATCH --partition=tcm #SBATCH -N 1 -n 10 #SBATCH --mem=64GB #SBATCH --time=7-00:00:00 #SBATCH -w cn90 # # Get email updates #SBATCH --mail-type=ALL #SBATCH --mail-user=\u0026lt;username\u0026gt;@science.ru.nl # run_my_large_job This assumes you have your data stored in /scratch on cn90.science.ru.nl. If your application is not IO limited, simply store your data in a network share or your home directory (~) instead and remove the -w line to allow the scheduler to pick a random node.\nRequest a GPU Then use:\n# set the number of GPU cards to use per node #SBATCH --gres=gpu:1 Run an OpenMP job OpenMP is frequently used for multithreaded parallel programming. To use OpenMP on the cluster, make sure your code is compiled using the -fopenmp flag. Then any CPU cores requested will be automatically picked up (e.g. no need to set the OMP_NUM_THREADS flag). In fact if you do set the flag it will probably lead to slower running code since forcing the number of threads to be higher than the number of CPU cores available leads to overhead.\nSo the following example code for a parallel for loop:\n#include \u0026lt;omp.h\u0026gt; int main(int argc, char *argv[]) { const int N = 100000; int i, a[N]; #pragma omp parallel for for (i = 0; i \u0026lt; N; i++) a[i] = 2 * i; return 0; } can be compiled and run on the cluster with the following job script:\n#! /bin/bash # # Request 4 CPU cores for this OpenMP code #SBATCH -N 1 -n 4 # # First compile it gcc -O2 -mtune=native -fopenmp my_code.c -o my_code # # and run ./my_code Run an MPI job The cluster scheduler has full built in support for OpenMPI therefore it is unnecessary to specify the --hostfile, --host, or -np options to mpirun. Instead you can simply call mpirun from your job script and it will be aware of all nodes and cores requested and uses them accordingly.\n#! /bin/bash # # Request 32 processor cores randomly distributed over nodes #SBATCH -n 32 # # And 12 hours of runtime #SBATCH --time=12:00:00 # # Get email when it\u0026#39;s done #SBATCH --mail-type=END #SBATCH --mail-user=\u0026lt;username\u0026gt;@science.ru.nl # mpirun my_mpi_application Copy data to local scratch from external server This copies data from an external location to local scratch storage using SCP. If this takes a significant amount of time, or has to be done regularly you may want to submit a job to the scheduler to do it overnight.\nGenerate SSH keys Info\nYou only need to do this once!\nThe job script, when executed, cannot ask you for your password so we need to setup access via a public-private key pair first. Create a new keypair with:\nssh-keygen -t ed25519 and hit enter a bunch of times. Ddo not enter a password or it will attempt to ask the script again.\nExchange keys Now, append your public key to a file called ~/.ssh/authorized_keys:\nssh-copy-id -i ~/.ssh/id_ed25519.pub user@server.example.com Test passwordless login See if it worked:\nssh user@server.example.com This should give you a shell on the other machine without having to supply your password.\nCopy the data using a batch job Now you may submit the following script to the scheduler.\n#! /bin/bash # #SBATCH --partition=tcm # Select the node #SBATCH -w cn90 # # Get email when it\u0026#39;s done #SBATCH --mail-type=END #SBATCH --mail-user=\u0026lt;username\u0026gt;@science.ru.nl scp -r user@server.example.com:/path/over/there /scratch/$USER/ Interactive jobs If you need interactive access (a shell) you can request the scheduler for this with the following steps:\nRequest an allocation of resources. For instance, 1 core for 2 hours on a random node: salloc -c 1 --partition=tcm --time 2:00:00 Attach a shell to this allocation: srun --pty bash You then get a prompt on an available node and can start working. This shell will be automatically closed after two hours.\nInteractive job withing running job\u0026rsquo;s cgroup space To get a shell on the node of a specific job in that job\u0026rsquo;s \u0026ldquo;mapped\u0026rdquo; space use:\nsrun --pty --overlap --jobid JOBIDNUM bash ","permalink":"https://cncz.science.ru.nl/howto/slurm/","summary":"\u003ch2 id=\"computer-cluster-architecture\"\u003eComputer cluster architecture\u003c/h2\u003e\n\u003cp\u003eThe clusternodes that we manage for the various departments are all connected to the network, but not all are in the same subnet/vlan. We strive to keep the nodes of a single group in the same vlan to optimise internal network traffic. Connectivity with the storage servers for shares and homedirectories is always routed through the firewall, thus it is less performant than a local server and much less performant than local (within the server) storage on \u003ccode\u003e/scratch\u003c/code\u003e.\u003c/p\u003e","title":"Slurm and High Performance Computing"},{"content":"Over the years we\u0026rsquo;ve had some requests to run an Overleaf instance for science users. To integrate this well in our environment we would need the enterprise version, which costs about € 8,- per user per month. This is prohibitive expensive for us to run, because we would need to pay for all science users, so we will not be pursuing setting up Overleaf any further in the science domain.\nThere are alternatives for this setup, they may or may not work for your use case:\nYou can setup a collaboration using cryptpad and set up a way to compile the final LaTeX document. Use Gitlab to create a project and share the files that way. With CI/CD you can write a pipeline that compiles the LaTeX document. Another example here. Use typst to work together - however this is not LaTeX, and also not free (they know about Overleaf and are copying their business model). ","permalink":"https://cncz.science.ru.nl/news/2025-11-24_overleaf/","summary":"\u003cp\u003eOver the years we\u0026rsquo;ve had some requests to run an \u003ca href=\"https://www.overleaf.com/\" target=\"_blank\"\u003eOverleaf\u003c/a\u003e instance for science users. To\nintegrate this well in our environment we would need the enterprise version, which costs about € 8,- per user\nper month. This is prohibitive expensive for us to run, because we would need\nto pay for all science users, so we will not be pursuing setting up Overleaf any further in the science domain.\u003c/p\u003e\n\u003cp\u003eThere are alternatives for this setup, they may or may not work for your use case:\u003c/p\u003e","title":"Overleaf"},{"content":"After moving the elabftw site to a new server, it was impossible to send e-mail from the server, like when a user wants to reset their password. The changes that were necessary are in between the host and the docker container running elabftw, while figuring out what was needed also caused some general issues reaching the elabftw webserver.\n","permalink":"https://cncz.science.ru.nl/cpk/1418/","summary":"\u003cp\u003eAfter moving the elabftw site to a new server, it was impossible to send e-mail\nfrom the server, like when a user wants to reset their password.\nThe changes that were necessary are in between the host and the docker\ncontainer running elabftw, while figuring out what was needed also caused some\ngeneral issues reaching the elabftw webserver.\u003c/p\u003e","title":"Elabftw password reset problem"},{"content":"To make the network less complicated and more easily manageable, we need to make vlans for the subnets 131.174.8.0/24 and 131.174.9.0/24, this will involve some servers getting a new ip address. This affects firewall rules as well. We must coordinate this with ILS networking and the changes will cause disruptions between a few minutes up to a quarter of an hour.\nList of sites:\nalice.science.ru.nl\nalicecontrol.science.ru.nl\ncoursetimetable.science.ru.nl\ndmarcreport.science.ru.nl\nedutools.science.ru.nl\neduview.science.ru.nl\nhelp.rumba.science.ru.nl\ninterface.science.ru.nl\nipeer.science.ru.nl\nis.wiki.science.ru.nl\njive.science.ru.nl\njoep.science.ru.nl\nlama.science.ru.nl\nnew.wiki.science.ru.nl\nomv.science.ru.nl\np4d2lapi.science.ru.nl\npeerfeedback.edutools.science.ru.nl\nscratchcard.edutools.science.ru.nl\nsignon.science.ru.nl\nsuddendev.science.ru.nl\nsurvey.science.ru.nl\ntemplate.science.ru.nl\nwww.protimo.science.ru.nl\nafricacrypt2022.cs.ru.nl\naicrypt2025.cs.ru.nl\nakn.science.ru.nl\naliceandeve.cs.ru.nl\nalott.astro.ru.nl\naqua.science.ru.nl\nastro.ru.nl\nautoconfig.science.ru.nl\nautomata.cs.ru.nl\nb-ware.science.ru.nl\nbacc.cs.ru.nl\nbeestfeest.science.ru.nl\nbenelearn2013.cs.ru.nl\nbio.internship.science.ru.nl\nblackgem.science.ru.nl\nblackholecam.org\nbomengids.science.ru.nl\ncellhealth-initiative.nl\ncerttest.science.ru.nl\ncescalab.cs.ru.nl\nchemx.nl\nclinical-nlp.cs.ru.nl\ncoffee.science.ru.nl\ncourse.cs.ru.nl\ncrossfyre15.cs.ru.nl\ncrossfyre21.cs.ru.nl\ncryptacus.cs.ru.nl\ndas.cs.ru.nl\ndcn.science.ru.nl\ndesda.org\ndig.cs.ru.nl\ndis.cs.ru.nl\ndnp-omics.science.ru.nl\ndose-project.eu\ndossiers.science.ru.nl\ndreamspark.cs.ru.nl\ndudoc.science.ru.nl\necc2017.cs.ru.nl\necgsim.org\neducation.cs.ru.nl\nefprob.cs.ru.nl\nehi.astro.ru.nl\nenglishclub.science.ru.nl\neoe.cs.ru.nl\nethergids.science.ru.nl\neutypes.cs.ru.nl\nexpress-sos2019.cs.ru.nl\nexpress-sos2020.cs.ru.nl\nextedu.cs.ru.nl\nfbkr.cs.ru.nl\nfelix.science.ru.nl\nflowchart.math.ru.nl\nfooltheai.cs.ru.nl\nfopara.cs.ru.nl\nformats-2020.cs.ru.nl\nforms.science.ru.nl\nfpday26.cs.ru.nl\nfrisiacrypt2022.cs.ru.nl\nftp.science.ru.nl\nfunction-2021.cs.ru.nl\ngelrecrypt.cs.ru.nl\ngenderdiversity.science.ru.nl\nhef.ru.nl\nhfml.science.ru.nl\nhpc.cs.ru.nl\niconic.science.ru.nl\nifip-wg-rewriting.cs.ru.nl\nifl.cs.ru.nl\nifl21.cs.ru.nl\nifl24.cs.ru.nl\ninsurance2021.cs.ru.nl\nirma.cs.ru.nl\nirrj.cs.ru.nl\nisp.cs.ru.nl\nitalia.cs.ru.nl\nitp2011.cs.ru.nl\njsmol.science.ru.nl\nleonardo.science.ru.nl\nlle2024.cs.ru.nl\nloir.science.ru.nl\nmagnetofon.science.ru.nl\nmbdata.science.ru.nl\nmbfys.ru.nl\nmbp.science.ru.nl\nmcn.science.ru.nl\nmeds.cs.ru.nl\nmicrobial-physiology.science.ru.nl\nmmmworkshop.cs.ru.nl\nmodule-cybersecurity.cs.ru.nl\nmolchem.science.ru.nl\nneuroinformatics.nl\nneurotech.science.ru.nl\nnn-online.org\nocsing.science.ru.nl\nocw.cs.ru.nl\nolympus.science.ru.nl\nowc.science.ru.nl\npackages.science.ru.nl\npep.cs.ru.nl\npms.cs.ru.nl\npracmw.internship.science.ru.nl\nprinteger.eu\nprivacypatterns.cs.ru.nl\nproact-school.cs.ru.nl\nprobiomed.cs.ru.nl\nprover-aa.cs.ru.nl\npuc-admin.science.ru.nl\npuc.science.ru.nl\npz.science.ru.nl\nqpl.cs.ru.nl\nquantum.cs.ru.nl\nquantum.science.ru.nl\nragolu.science.ru.nl\nrcnp.science.ru.nl\nrel.cs.ru.nl\nresourceanalysis.cs.ru.nl\nrijndael-ieeemilestone.cs.ru.nl\nrimlsweb.science.ru.nl\nroundcube.science.ru.nl\nrure.cs.ru.nl\nrwocs.cs.ru.nl\nsam-fms.cs.ru.nl\nscavengerhunt.puc.science.ru.nl\nscheikundeolympiade.science.ru.nl\nsems2017.cs.ru.nl\nsetup.science.ru.nl\nsigma-lustrum.science.ru.nl\nsmartech4health.cs.ru.nl\nsnnai.snn.ru.nl\nsos.cs.ru.nl\nsovereign.cs.ru.nl\nspeakapp.science.ru.nl\nspeccatlearn.science.ru.nl\nspida.cs.ru.nl\nspm.science.ru.nl\nsterrenkundeclub.science.ru.nl\nstring2017.cs.ru.nl\nstudiegids.science.ru.nl\nstudiereis.cs.ru.nl\nsumbat.cs.ru.nl\nsummerschool-croatia.cs.ru.nl\nsustainable.cs.ru.nl\nsvn.cs.ru.nl\nsws.cs.ru.nl\nsysadmin.science.ru.nl\ntartarus.science.ru.nl\ntdtelescope.org\nthadmin.science.ru.nl\ntheorphys.science.ru.nl\nthesisstefan.science.ru.nl\ntictoc.cs.ru.nl\ntitusbrandsmateksten.nl\ntoernooi.math.ru.nl\ntomte.cs.ru.nl\ntorxakis.cs.ru.nl\ntrackhub.science.ru.nl\ntroosterprijs.nl\nvcbio.science.ru.nl\nveenstra.science.ru.nl\nvsc.science.ru.nl\nw4kangoeroe.nl\nwebchem.science.ru.nl\nwetche.science.ru.nl\nwortel.math.ru.nl\nwww.bnaic2014.org\nwww.cs.ru.nl\nwww.math.ru.nl\nwww.science.ru.nl\nwww.snn.ru.nl\nwww.terminalterra.nl\nwww.theochem.ru.nl\nwww.titusbrandsmainstituut.nl\nxtal.science.ru.nl\nzwaartekrachtsgolven.nl\n","permalink":"https://cncz.science.ru.nl/cpk/1417/","summary":"\u003cp\u003eTo make the network less complicated and more easily manageable, we need to\nmake vlans for the subnets \u003ccode\u003e131.174.8.0/24\u003c/code\u003e and \u003ccode\u003e131.174.9.0/24\u003c/code\u003e, this will\ninvolve some servers getting a new ip address. This affects firewall rules as\nwell. We must coordinate this with ILS networking and the changes will cause\ndisruptions between a few minutes up to a quarter of an hour.\u003c/p\u003e\n\u003cp\u003eList of sites:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ealice.science.ru.nl\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003ealicecontrol.science.ru.nl\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003ecoursetimetable.science.ru.nl\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003edmarcreport.science.ru.nl\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003eedutools.science.ru.nl\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003eeduview.science.ru.nl\u003c/p\u003e","title":"Network changes websites"},{"content":"The certificate of the radius server has been replaced this morning, users who use their science account for authenticating to the Eduroam network will not have been able to connect until the certificate was fixed.\nYou may need to \u0026rsquo;trust-on-first-use\u0026rsquo; or other setting in your device to properly reconnect and trust the certificates, if that still fails.\n","permalink":"https://cncz.science.ru.nl/cpk/1416/","summary":"\u003cp\u003eThe certificate of the radius server has been replaced this morning, users who\nuse their science account for authenticating to the Eduroam network will not\nhave been able to connect until the certificate was fixed.\u003c/p\u003e\n\u003cp\u003eYou may need to \u0026rsquo;trust-on-first-use\u0026rsquo; or other setting in your device to properly reconnect and trust the\ncertificates, if that still fails.\u003c/p\u003e","title":"Radius certificate expired (Eduroam login)"},{"content":"Every half year we do clusternode maintenance, with at least a package ugprade and a reboot, but sometimes other maintenance can happen, such as changes in filesystems or network configurations.\nThe upcoming date for this maintenance is February 6th, 2026 (Friday)\nThe maintenance is done.\n","permalink":"https://cncz.science.ru.nl/cpk/1415/","summary":"\u003cp\u003eEvery half year we do clusternode maintenance, with at least a package ugprade and a reboot, but sometimes\nother maintenance can happen, such as changes in filesystems or network configurations.\u003c/p\u003e\n\u003cp\u003eThe upcoming date for this maintenance is February 6th, 2026 (Friday)\u003c/p\u003e\n\u003cp\u003eThe maintenance is done.\u003c/p\u003e","title":"Clusternode maintenance day - February 6th 2026"},{"content":"Starting a new WWW service This document gives a short description which decisions have to be made before a new WWWW service within the Science Faculty can be started.\nContact Communications C\u0026amp;CZ is not the communications department, officially all communication and therefore websites should be provided and endorsed by the communication department.\nHowever, sometimes a website is actually an application with a web interface and this can usually not be provided via the official communication website.\nPurpose We need to know if the web service is intended for the entire faculty. In this case it is basically a feature request for C\u0026amp;CZ and we must decide if we want to add it to our list of services.\nResearch websites, Personal websites, experiments, etc. have a smaller scope and usually the site must be managed by yourself, including security updates and such. We can provide some resources to serve the site to the scope where it is needed.\nA name for the service Preferably a site with a url like https://\u0026lt;somesite\u0026gt;.science.ru.nl is used, but if necessary, we can request an additional domain under whatever toplevel you need. Be aware that this is most likely against the official policy regarding websites.\nWho is (are) the contact(s) for the website To be able to contact the maintainer(s) of the website in case of problems we need at least one mail address. Also we would like to know until what time the site will be required (of course this may be extended when necessary). But otherwise we have no way of knowing when to clean it up.\nRequesting a site Send an e-mail to us with your wishes and we will consider how we can best help you.\n","permalink":"https://cncz.science.ru.nl/howto/www-service/","summary":"\u003ch2 id=\"starting-a-new-www-service\"\u003eStarting a new WWW service\u003c/h2\u003e\n\u003cp\u003eThis document gives a short description which decisions have to be made before\na new WWWW service within the Science Faculty can be started.\u003c/p\u003e\n\u003ch2 id=\"contact-communications\"\u003eContact Communications\u003c/h2\u003e\n\u003cp\u003e\u003ccode\u003eC\u0026amp;CZ\u003c/code\u003e is not the communications department, officially all communication and\ntherefore websites should be provided and endorsed by the communication\ndepartment.\u003c/p\u003e\n\u003cp\u003eHowever, sometimes a website is actually an application with a web interface\nand this can usually not be provided via the official communication website.\u003c/p\u003e","title":"WWW Service"},{"content":"A brief service interruption occurred this morning when one of our LDAP servers refused to start. This affected services that depend on LDAP for user authentication. Services such as Eduroam (using science login for authentication) and GitLab experienced authentication failures during this time. We are investigating the source of the failure to prevent recurrence.\n","permalink":"https://cncz.science.ru.nl/cpk/1414/","summary":"\u003cp\u003eA brief service interruption occurred this morning when one of our LDAP servers refused to start. This affected services that depend on LDAP for user authentication.\nServices such as Eduroam (using science login for authentication) and GitLab experienced authentication failures during this time.\nWe are investigating the source of the failure to prevent recurrence.\u003c/p\u003e","title":"ldap unavailable"},{"content":"Recently we have experienced some issues with nfs filesystems one of the main suspects was the ZFS filesystem having a lack of cache memory on the machine. In order to improve the situation we will install more memory in the servers. This will cause a downtime of about 10-15 minutes per server. We plan to do this before 10:00 or after 16:00 on Monday Oct 27, 2025.\nUpdate 27 Oct 2025 The memory upgrade was concluded around 09:15 on Monday 27 Oct.\n","permalink":"https://cncz.science.ru.nl/cpk/1411/","summary":"\u003cp\u003eRecently we have \u003ca href=\"./1407/\"\u003eexperienced some issues with nfs filesystems\u003c/a\u003e one of the main suspects was the ZFS\nfilesystem having a lack of cache memory on the machine. In order to improve the situation we will install\nmore memory in the servers. This will cause a downtime of about 10-15 minutes per server. We plan to do this\nbefore 10:00 or after 16:00 on Monday Oct 27, 2025.\u003c/p\u003e\n\u003ch2 id=\"update-27-oct-2025\"\u003eUpdate 27 Oct 2025\u003c/h2\u003e\n\u003cp\u003eThe memory upgrade was concluded around 09:15 on Monday 27 Oct.\u003c/p\u003e","title":"Homeserver upgrade memory"},{"content":"The ElabFTW server will be upgraded and also moved to another host on Monday October 27th, this will be a little bit more involved than a normal version upgrade, and you can expect some downtime during the move and upgrade.\nUpdate: upgrading was done on the old server, moving to the new server ran into some unexpected issues, we will plan a new date for that.\nUpdate: move was done on Sunday November 2nd, some users report problems logging in, but that appears to be temporary due to elab running on a different ip address and machine.\n","permalink":"https://cncz.science.ru.nl/cpk/1413/","summary":"\u003cp\u003eThe \u003ca href=\"https://elabftw.science.ru.nl/\" target=\"_blank\"\u003eElabFTW\u003c/a\u003e server will be upgraded and also moved to another host on Monday October 27th, this will be a little bit more involved than a normal version upgrade, and you can expect some downtime during the move and upgrade.\u003c/p\u003e\n\u003cp\u003eUpdate: upgrading was done on the old server, moving to the new server ran into some unexpected issues, we will plan a new date for that.\u003c/p\u003e\n\u003cp\u003eUpdate: move was done on Sunday November 2nd, some users report problems logging in, but that appears to be temporary due to elab running on a different ip address and machine.\u003c/p\u003e","title":"Elabftw upgrade and move"},{"content":"Servers and Workstations C\u0026amp;CZ manages about 400 Linux servers and hundreds of Linux workstations and a few servers with MS-Windows, primarily in the domain science.ru.nl. Dual boot Windows/Linux machines are counted twice. The servers are distributed over three datacenters.\nWorkstations C\u0026amp;CZ manages (for departments) workstations with Ubuntu Linux. There are also workstations in the PC-rooms for general use by anybody with a Science login, but also by all RU employees and students and guests with a temporary login. Almost all those machines are dual boot, the user can choose to boot Ubuntu Linux or MS-Windows.\nLinux login servers A few secure shell servers are available for Students and Staff of the Faculty (everyone with a Science account). You can use it just as you like, as long as you do not cause problems for other users.\nThe primary login server can be reached with the following address:\nlilo.science.ru.nl\nAt the moment, lilo points to a machine called lilo9 (Ubuntu 24.04).\nThe ssh fingerprints for lilo8 and lilo9 are:\n256 SHA256:yVihq2mnLULOCBFdvO2RWBps33hdE6PmaIGeBXX44wY lilo8 (ECDSA)\n256 SHA256:gsvoEP5djMC5GsXJJUYktYq3TjRtNQPKo0/psULHBYc lilo8 (ED25519)\n3072 SHA256:gFrExKYRunrQQAkZit5mlLQrRXPaO3vU3GegM0/rP+o lilo8 (RSA)\n256 SHA256:FtDPr17AUU3RXnNU8lLcMTDxvbf7Oy5D2+JwziPVvjI lilo9.science.ru.nl (ECDSA)\n256 SHA256:BtSAmgYYj1bMut8en5QmyxVsDar22+WlloJPTNEtPkQ lilo9.science.ru.nl (ED25519)\nYou can test this with ssh-keyscan host | ssh-keygen -lf -.\nTo avoid the following ssh warning everytime we replace hardware or change the alias for lilo or stitch\n@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n@ WARNING: POSSIBLE DNS SPOOFING DETECTED! @\n@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\nThe ECDSA host key for lilo.science.ru.nl has changed\nyou can insert the following line into the file .ssh/known_hosts\n@cert-authority *.science.ru.nl ecdsa-sha2-nistp521 AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBAHpJveyOrLKFRDsbiW/29OadbCbkmUaIXnWbhVwtytbpftAc7Stj2RYa8yBmgfdm82T/UBVu1tLbeeCYQI8UlCvbAALMx+I60ux+iEGVdDBgIOjeu6LuY12pksVlXy/nKc59+m3AdMXfGHA8cI/O8eFosQLJ+dck7SBcvTT4lPhEcSQxg==\nCompute servers/clusters C\u0026amp;CZ manages a number of compute clusters, with compute nodes that departments have purchased. In a few cases, departments have created a separate cluster by also purchasing their own head node (master). The largest cn-cluster also has a number of nodes purchased by C\u0026amp;CZ, so FNWI departments may use these after approval by C\u0026amp;CZ. For departments of FNWI the housing and management of clusternodes is free of charge. The cn-cluster is heterogeneous. All nodes have SLURM as cluster software. As of February 2022, the cn-cluster totalled 123 nodes with 4700 cores and 30 TB RAM. Several clusternodes have a GPU with CUDA cores.\nThe Astrophysics coma cluster with 1048 cores, 8780 GB RAM, 600 TB fileserver storage, GPU’s is a separate cluster. A separate cluster is also managed for the RU department Centre for Language Studies.\nSometimes outside of opening hours also the pcs in the computer labs are used as a compute cluster.\nA primitive overview of clusternodes is available, until we can fix something better to replace the old cricket overview.\nMail On DIY, you can see your mail addresses, mail aliases as well as your forwarding settings. For information on how to use the email service and optionally, conffigure your email software, cunsult our Email howto.\nWWW servers There are several WWW-servers with websites and web applications. A description of the Apache webserver setup is available.\nGitLab servers The GitLab service provides a source code collaboration platform, git repository manager, issue tracker and code reviewer.\nThe ssh fingerprints for gitlab.science.ru.nl:\n256 SHA256:BSSXi19WgCSpZu5AQkUTtwm+5zAMioQJpFE3oxBrIMQ root@gitlab (ECDSA)\n256 SHA256:7G/4WD/tUE8H0k9MkBznlcx+ZWgUxnn3KazKm1XQwRk root@gitlab (ED25519)\n2048 SHA256:NgZ9HciXlwG5JNPSFbem7bBbDbhqaNAO7JHag8rwi/I root@gitlab (RSA)\ngitlab.pep.cs.ru.nl fingerprints:\n256 SHA256:pBFiBobAQTozB0xeeMCp3Du2PFtX7YIXw6XRFJSAGH0 root@gitlab (ECDSA)\n256 SHA256:iWfwGvGZ/hdFImBzzG5Bu/y5gqhUkLOdSTYmzl1+k2w root@gitlab (ED25519)\n2048 SHA256:lWWFUfhwODG0bBuQJUR8ymlVfqpNHrXk0xbFAoDpTIg root@gitlab (RSA)\nPrinter server One server is used to print jobs. See the printer webpage to see which server is advised in which situation.\nLicense servers For several software packages there is a license server, that allows use of the software on all pc’s, while making sure that the total number of licenses uses is not more than what has been bought. Most of these license servers use FlexNet by Flexera.\n","permalink":"https://cncz.science.ru.nl/howto/hardware-servers/","summary":"\u003ch2 id=\"servers-and-workstations\"\u003eServers and Workstations\u003c/h2\u003e\n\u003cp\u003eC\u0026amp;CZ manages about 400 Linux servers and hundreds of Linux workstations and a few\nservers with MS-Windows, primarily in the domain\n\u003ccode\u003escience.ru.nl\u003c/code\u003e. Dual boot Windows/Linux machines are counted twice. The\nservers are distributed over three datacenters.\u003c/p\u003e\n\u003ch3 id=\"workstations\"\u003eWorkstations\u003c/h3\u003e\n\u003cp\u003eC\u0026amp;CZ manages (for departments) workstations with Ubuntu Linux.\nThere are also workstations in the PC-rooms for general use\nby anybody with a \u003ca href=\"/howto/login/\"\u003eScience login\u003c/a\u003e, but also\nby all RU employees and students and guests with a temporary login.\nAlmost all those machines are dual boot, the user can choose to boot\nUbuntu Linux or MS-Windows.\u003c/p\u003e","title":"Servers"},{"content":"On Thursday 23rd we will move the host of the rstudio website and another server to another location. This will cause some downtime, starting from about 9 O\u0026rsquo;clock and it should be done within 1 hour.\n","permalink":"https://cncz.science.ru.nl/cpk/1412/","summary":"\u003cp\u003eOn Thursday 23rd we will move the host of the rstudio website and another\nserver to another location. This will cause some downtime, starting from about\n9 O\u0026rsquo;clock and it should be done within 1 hour.\u003c/p\u003e","title":"Physical server move"},{"content":"The latest version of Matlab, R2025b, is available. The software and license codes are directly available for Science accounts and can be requested by other entitled users by sending mail to the helpdesk. The software can also be found on the install-share. All C\u0026amp;CZ-managed Linux machines have this version installed, the older version (/opt/matlab-R2025a/bin/matlab) will be available temporarily. The C\u0026amp;CZ-managed Windows machines will not receive a new version during the semester to prevent problems with version dependencies in current lectures.\n","permalink":"https://cncz.science.ru.nl/news/2025-09-30_matlab-r2025b-available/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/matlab/\"\u003eMatlab\u003c/a\u003e, R2025b, is available.\nThe software and license codes\n\u003ca href=\"https://cncz.pages.science.ru.nl/licenses/Matlab/\" target=\"_blank\"\u003eare directly available for Science accounts\u003c/a\u003e\nand can be requested by other entitled users by sending \u003ca href=\"https://cncz.science.ru.nl/howto/contact/\" target=\"_blank\"\u003email to the helpdesk\u003c/a\u003e.\nThe software can also be found on the \u003ca href=\"/tags/software\"\u003einstall\u003c/a\u003e-share. All\nC\u0026amp;CZ-managed Linux machines have this version installed, the older\nversion (/opt/matlab-R2025a/bin/matlab) will be available temporarily.\nThe C\u0026amp;CZ-managed Windows machines will not receive a new version during\nthe semester to prevent problems with version dependencies in current\nlectures.\u003c/p\u003e","title":"Matlab R2025b available"},{"content":"The GitLab registry used by gitlab.science.ru.nl and gitlab.pep.cs.ru.nl is currently unavailable due to a disk failure in the storage backend. The faulty drive is being replaced, after which the registry should be available again.\n","permalink":"https://cncz.science.ru.nl/cpk/1410/","summary":"\u003cp\u003eThe GitLab registry used by \u003ca href=\"https://gitlab.science.ru.nl\" target=\"_blank\"\u003egitlab.science.ru.nl\u003c/a\u003e and \u003ca href=\"https://gitlab.pep.cs.ru.nl\" target=\"_blank\"\u003egitlab.pep.cs.ru.nl\u003c/a\u003e is currently unavailable due to a disk failure in the storage backend. The faulty drive is being replaced, after which the registry\nshould be available again.\u003c/p\u003e","title":"gitlab registry unavailable"},{"content":"Due to some cleanup changes, the miii server ended up without the proper firewall rules and account configuration scripts that it was supposed to get. We were able to fix the server eventually, but during the day, users were unable to work until it was fixed.\n","permalink":"https://cncz.science.ru.nl/cpk/1409/","summary":"\u003cp\u003eDue to some cleanup changes, the miii server ended up without the proper firewall rules and account configuration scripts that it was supposed to get.\nWe were able to fix the server eventually, but during the day, users were unable to work until it was fixed.\u003c/p\u003e","title":"Miii server issues"},{"content":"With the changes in the networks, we are able to optimise some vlan configurations to utilise the high speed link, which was impossible before. The network reconfiguration may need a reboot of the server, but otherwise not too much downtime is expected. The reboot takes about 5-10 minutes if necessary.\nThe list of vm\u0026rsquo;s affected (only those without redundant functionality are listed):\nvmhost05:\nmestrenova143 pagespep pep1 nolaivalkhof mestrenova150 fsecure pep2 pages licensevm1 goudsmit zaaivm stormvogel nolaigoffert desdapi vmhost06:\ngitlab9 (gitlab.pep) pep4 wiki icsd slurm22 pep3 mariavm01 jitsivm indicoimapp2vm ","permalink":"https://cncz.science.ru.nl/cpk/1408/","summary":"\u003cp\u003eWith the changes in the networks, we are able to optimise some vlan configurations to utilise the high speed link, which was impossible before.\nThe network reconfiguration may need a reboot of the server, but otherwise not too much downtime is expected. The reboot takes about 5-10 minutes if necessary.\u003c/p\u003e\n\u003cp\u003eThe list of vm\u0026rsquo;s affected (only those without redundant functionality are listed):\u003c/p\u003e\n\u003cp\u003evmhost05:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003emestrenova143\u003c/li\u003e\n\u003cli\u003epagespep\u003c/li\u003e\n\u003cli\u003epep1\u003c/li\u003e\n\u003cli\u003enolaivalkhof\u003c/li\u003e\n\u003cli\u003emestrenova150\u003c/li\u003e\n\u003cli\u003efsecure\u003c/li\u003e\n\u003cli\u003epep2\u003c/li\u003e\n\u003cli\u003epages\u003c/li\u003e\n\u003cli\u003elicensevm1\u003c/li\u003e\n\u003cli\u003egoudsmit\u003c/li\u003e\n\u003cli\u003ezaaivm\u003c/li\u003e\n\u003cli\u003estormvogel\u003c/li\u003e\n\u003cli\u003enolaigoffert\u003c/li\u003e\n\u003cli\u003edesdapi\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003evmhost06:\u003c/p\u003e","title":"Network reconfiguration vmhosts"},{"content":"When we moved the gateways of our networks from the old location to the new firewalls, we have received some complaints about NFS filesystems having slowness, longer delays or unavailability.\nIn general NFS should never be a requirement for a clusternode job if you can avoid it, because this I/O is always much slower than local I/O from /scratch.\nWe are investigating how we can optimise the network to resolve this issue, but we are hard pressed to know the exact cause of the problem. We are assuming the root cause might be that, now more traffic is passing through our firewalls, this degrades the performance in some way.\nNote that NFS shares always have performance variability, due to the shared nature of the network. We currently have no QoS in place for NFS/Samba (meaning that any one user can use all the bandwidth and, unintentionally, make life worse for all other users).\nUpdate 2025-10-27 The memory in the home servers has been doubled. See cpk 1411.\nUpdate 2025-11-05 We are rolling out a change to NFS mount shares from the home6 server with soft instead of the current hard, see nfs(5). If successful we will be enabling this for all NFS shares.\nUpdate 2025-11-24 We haven\u0026rsquo;t found any bottlenecks in our testing and user feedback also suggests things are better. We are waiting for the monthly reboot of the home server and then decide if we will roll out the soft mount for all NFS mounts.\nUpdate 2025-11-25 One of the things that caught our eye, are heavy writes from SLURM clusters that, in this case, made home6 less responsive. In general intermediate results should be written to /scratch and not to a home directory. We have stopped these heavy writing jobs.\nUpdate 2025-12-04 The soft mount option has not lead to an increase in issues, so we will enable this for all NFS mounts. We are also more aggressively looking at /home (ab)use from cluster nodes - as we see (on average) 40 MB/s writes from the clusters. We\u0026rsquo;ve updated the SLURM howto and documented that /scratch should be used instead.\n","permalink":"https://cncz.science.ru.nl/cpk/1407/","summary":"\u003cp\u003eWhen we moved the gateways of our networks from the old location to the new firewalls, we have received some\ncomplaints about NFS filesystems having slowness, longer delays or unavailability.\u003c/p\u003e\n\u003cp\u003eIn general NFS should never be a requirement for a clusternode job if you can avoid it, because this I/O is\nalways much slower than local I/O from /scratch.\u003c/p\u003e\n\u003cp\u003eWe are investigating how we can optimise the network to resolve this issue, but we are hard pressed to know\nthe exact cause of the problem. We are assuming the root cause might be that, now more traffic is passing\nthrough our firewalls, this degrades the performance in some way.\u003c/p\u003e","title":"NFS problems under investigation"},{"content":"A change in the firewall config had the uncalculated effect that ssh-sessions got blocked/dropped. The config has been reversed.\n","permalink":"https://cncz.science.ru.nl/cpk/1405/","summary":"\u003cp\u003eA change in the firewall config had the uncalculated effect that ssh-sessions got blocked/dropped. The config has been reversed.\u003c/p\u003e","title":"ssh session hanging due to firewall config"},{"content":"We need to move a server to another location, during the move some of the services are unavailable, including licenses for:\nCadence Labview Originlab Cst Maple Server ExelisIdl Mathematica Synopsys Genesys Matlab VirtualMachine GurobiTokenServer Mentorgraphics Xilinx Hdlworks Moe IntelCompiler New Everything should be completed by 10:00.\n","permalink":"https://cncz.science.ru.nl/cpk/1406/","summary":"\u003cp\u003eWe need to move a server to another location, during the move some of the services are unavailable, including licenses for:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eCadence Labview Originlab\u003c/li\u003e\n\u003cli\u003eCst Maple Server\u003c/li\u003e\n\u003cli\u003eExelisIdl Mathematica Synopsys\u003c/li\u003e\n\u003cli\u003eGenesys Matlab VirtualMachine\u003c/li\u003e\n\u003cli\u003eGurobiTokenServer Mentorgraphics Xilinx\u003c/li\u003e\n\u003cli\u003eHdlworks Moe\u003c/li\u003e\n\u003cli\u003eIntelCompiler New\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eEverything should be completed by 10:00.\u003c/p\u003e","title":"Server \"oliver\" needs to be moved"},{"content":"Due to the gateway change the printing traffic followed a different route which ran into default blockages in the central firewall, after the problem was found a fix was implemented to allow this traffic to the printserver via the new route.\n","permalink":"https://cncz.science.ru.nl/cpk/1404/","summary":"\u003cp\u003eDue to the gateway change the printing traffic followed a different route which\nran into default blockages in the central firewall, after the problem was found\na fix was implemented to allow this traffic to the printserver via the new route.\u003c/p\u003e","title":"printing via lp science blocked"},{"content":"After switching the gateway for one of our busiest vlans to our own firewalls, a lot of websites were only available from outside that vlan, it took a while to understand the issue and find a fix for it. We now have a temporary fix in place that should make the websites work again.\n","permalink":"https://cncz.science.ru.nl/cpk/1403/","summary":"\u003cp\u003eAfter switching the gateway for one of our busiest vlans to our own firewalls,\na lot of websites were only available from outside that vlan, it took a while\nto understand the issue and find a fix for it. We now have a temporary fix in\nplace that should make the websites work again.\u003c/p\u003e","title":"websites and other services unavailable from everywhere they were supposed to be"},{"content":"Due to an unfortunate manual command, the package for filemaker was removed from the server. Service was restored after the weekend, when the backup was restored.\n","permalink":"https://cncz.science.ru.nl/cpk/1402/","summary":"\u003cp\u003eDue to an unfortunate manual command, the package for \u003ccode\u003efilemaker\u003c/code\u003e was removed from the server.\nService was restored after the weekend, when the backup was restored.\u003c/p\u003e","title":"filemaker pro unavailable"},{"content":"Due to an unfortunate manual command, the package for DHZ was removed from the servers, causing all attempts to login with MFA to fail on for example roundcube and lilo ssh login. Service was restored about half an hour later when the DHZ package was installed again.\n","permalink":"https://cncz.science.ru.nl/cpk/1401/","summary":"\u003cp\u003eDue to an unfortunate manual command, the package for DHZ was removed from the servers, causing all attempts to login with MFA to fail on for example roundcube and lilo ssh login.\nService was restored about half an hour later when the DHZ package was installed again.\u003c/p\u003e","title":"DHZ en daarmee MFA onbereikbaar"},{"content":"Science login A Science login provides faculty students and employees access to services like networked storage, computer labs, JupyterHub, clusternodes and GitLab \u0026amp; Mattermost.\nA Science login usually resembles your name and does not contain periods, capital letters or an at sign (@). For example johndoe.\nAll settings related to your Science login, like setting your password, MFA, storage, groups and email aliases can be managed in DIY. See the DIY howto for more information.\nFor Students \u0026amp; Employees To create your Science login:\nGo to DIY. Select \u0026ldquo;Login using Radboud account\u0026rdquo; Follow the prompts to create your account. Employees must provide their department contact person\u0026rsquo;s login name during registration. After logging in again, you can set your Science Account password and MFA Info\nSet up multi-factor authentication (MFA) as soon as possible\nMFA adds an extra layer of protection to your account and helps keep your access secure, even if your password is ever compromised. Once MFA is set up, you’ll be able to enable, edit and request services through our self-service portal.\nAccount Validity: Your Science login remains active for the duration of your enrollment or employment. It will be disabled upon leaving the university and permanently removed one month later.\nIf you are leaving the university but need to retain your Science login, please contact your department\u0026rsquo;s contact person.\nForgot password? If you have forgotten or otherwise “lost” your Science login password, you have three possible ways to regain access:\nLogin with your Radboud ID – Use the Login with Radboud account option on DIY, then change your Science password. No Radboud ID? – Contact your department’s contact person. They can log in to DIY, locate your account and generate a temporary password for you (the contact person does this by pressing the Reset DIY Password button). Contact C\u0026amp;CZ – Reach out to the C\u0026amp;CZ helpdesk by e‑mail, phone, or in person. See the contact page for details. For Guests \u0026amp; Trainees Requesting a Guest account:\nGo to DIY Click the + button in the top‑right corner of the screen. In the menu that appears, choose Accounts → Guest account. Fill out the request form and press Submit. When the request is processed, both you and your guest will receive an email with login details and next‑step instructions. For Groups Requesting multiple temporary guest accounts, e.g., for a workshop:\nGo to DIY Click the + button in the top‑right corner of the screen. In the menu that appears, choose Accounts → Temporary Accounts. Fill out the request form and press Submit. When the request is processed, you will receive an email with login details for all requested accounts. Wi-Fi guest access Wi‑Fi guest access for Eduroam is available in two flavours:\nFor a single‑day visit you can obtain a temporary login by going to the RU portal and following the instructions under Wi‑Fi Access Guests; the credentials you receive are valid for 24 hours. If you need Wi‑Fi for a group, for one day or for several consecutive days, you should apply for Eduroam Visitor Access at the Library of Science or via the C\u0026amp;CZ helpdesk. ","permalink":"https://cncz.science.ru.nl/howto/login/","summary":"\u003ch1 id=\"science-login\"\u003eScience login\u003c/h1\u003e\n\u003cp\u003eA Science login provides faculty students and employees access to services like \u003ca href=\"../storage\"\u003enetworked storage\u003c/a\u003e,\n\u003ca href=\"../terminalkamers\"\u003ecomputer labs\u003c/a\u003e, \u003ca href=\"../jupyterhub\"\u003eJupyterHub\u003c/a\u003e, \u003ca href=\"../hardware-servers\"\u003eclusternodes\u003c/a\u003e and \u003ca href=\"../gitlab\"\u003eGitLab \u0026amp; Mattermost\u003c/a\u003e.\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003eA Science login usually resembles your name and does not contain periods, capital letters or an at sign (@). For\nexample \u003ccode\u003ejohndoe\u003c/code\u003e.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cp\u003eAll settings related to your Science login, like setting your password, \u003ca href=\"https://cncz.science.ru.nl/howto/diy/#2fa\" target=\"_blank\"\u003eMFA\u003c/a\u003e,\nstorage, groups and email aliases can be managed in \u003ca href=\"https://diy.science.ru.nl\" target=\"_blank\"\u003eDIY\u003c/a\u003e.\nSee the \u003ca href=\"https://cncz.science.ru.nl/howto/diy/\" target=\"_blank\"\u003eDIY howto\u003c/a\u003e for more information.\u003c/p\u003e\n\u003ch2 id=\"for-students--employees\"\u003eFor Students \u0026amp; Employees\u003c/h2\u003e\n\u003cp\u003eTo create your Science login:\u003c/p\u003e","title":"Login"},{"content":"Due to a change in how the Microsoft Exchange server validates e-mail, mails sent to an @science.ru.nl address (or similar domains for which we accept e-mail) from an external domain and with a forward to your @ru.nl mail are very likely to be dropped, because the receiving server at Microsoft considers this mail forged, in the sense that the sending client did not address the same domain as the receiving domain. This also applies to our Mail Aliases with @ru.nl addresses in them, when they are addressed from an external mail domain. The forwarded e-mail will be silently dropped, so senders will not notice a problem.\nMitigations:\n(Only if you have external people use your @science.ru.nl address); disable forwarding in your diy or add CC option to receive a copy in your science mailbox (you can access that via roundcube or mail client). Or stop using your @science.ru.nl address in e-mail communications. Not affected: users who have no forward and mailman-lists @science.ru.nl will also keep working.\nWe have notified the central mail administrators about this issue.\nUpdate; our mailsenders have been added to the trusted list.\n","permalink":"https://cncz.science.ru.nl/cpk/1400/","summary":"\u003cp\u003eDue to a change in how the Microsoft Exchange server validates e-mail, mails \u003cstrong\u003esent to\u003c/strong\u003e an \u003ccode\u003e@science.ru.nl\u003c/code\u003e address (or similar domains for which we accept e-mail) from an external domain and with a forward to your \u003ccode\u003e@ru.nl\u003c/code\u003e mail are very likely to be dropped, because the receiving server at Microsoft considers this mail \u003cem\u003eforged\u003c/em\u003e, in the sense that the sending client did not address the same domain as the receiving domain. This also applies to our \u003cem\u003eMail Aliases\u003c/em\u003e with \u003ccode\u003e@ru.nl\u003c/code\u003e addresses in them, when they are addressed from an external mail domain. The forwarded e-mail will be silently dropped, so senders will not notice a problem.\u003c/p\u003e","title":"Mail forwarding broken to @ru.nl"},{"content":"After an automatic update, Mattermost no longer starts. The issue has been identified; the solution requires relocating the installation. This may take some time.\nMattermost is now running on a different server as gitlab, which was a lot of work to figure out, but all should be well now. For some people it may have been longer before everything worked, due to dns caching of the hostname mattermost.science.ru.nl to the wrong address.\n","permalink":"https://cncz.science.ru.nl/cpk/1399/","summary":"\u003cp\u003eAfter an automatic update, Mattermost no longer starts. The issue has been identified; the solution requires relocating the installation. This may take some time.\u003c/p\u003e\n\u003cp\u003eMattermost is now running on a different server as gitlab, which was a lot of work to figure out, but all should be well now. For some people it may have been longer before everything worked, due to dns caching of the hostname \u003ccode\u003emattermost.science.ru.nl\u003c/code\u003e to the wrong address.\u003c/p\u003e","title":"Mattermost broken after automatic update"},{"content":"FNWI users have been experiencing delays in email reception since early this morning.\nWe have been working on this issue but have not solved it yet.\nNo emails have been lost, but we suspect certificate issues between the Science mail servers and the central RU mail filter.\nUpdate: the exact cause remains unknown.\nDuring investigations together with RU-ILS, we noticed a long-standing Certificate Chain issue.\nHowever, even after resolving this, the problem remained.\nThis morning the issue had disappeared, just as suddenly as it started yesterday morning.\n","permalink":"https://cncz.science.ru.nl/cpk/1397/","summary":"\u003cp\u003eFNWI users have been experiencing delays in email reception since early this morning.\u003c/p\u003e\n\u003cp\u003eWe have been working on this issue but have not solved it yet.\u003c/p\u003e\n\u003cp\u003eNo emails have been lost, but we suspect certificate issues between the Science mail servers and the central RU mail filter.\u003c/p\u003e\n\u003cp\u003eUpdate: the exact cause remains unknown.\u003c/p\u003e\n\u003cp\u003eDuring investigations together with RU-ILS, we noticed a long-standing Certificate Chain issue.\u003c/p\u003e\n\u003cp\u003eHowever, even after resolving this, the problem remained.\u003c/p\u003e","title":"delay in receiving email"},{"content":"In the process of migrating our server networks to new and faster stuff, we are moving the gateways to our (C\u0026amp;CZ) managed firewalls. These firewalls already handle the traffic to our 25Gbit networks, while the older 1Gbit/s connected nodes had the gateway in a temporary router, which came to replace the old DR-HUYG router a few years ago.\nWhile we don\u0026rsquo;t expect too much trouble, a hiccup may occur for up to a minute or so, while the network changes are being applied.\nUpdate: we\u0026rsquo;ve transferred 3 subnets, 2 remain for another time. There was a glitch when moving the first network, where roundcube, a database server and some more services live, so they were unreachable for about 10-15 minutes between 11:05 and 11:18.\n","permalink":"https://cncz.science.ru.nl/cpk/1398/","summary":"\u003cp\u003eIn the process of migrating our server networks to new and faster stuff, we are\nmoving the gateways to our (C\u0026amp;CZ) managed firewalls. These firewalls already\nhandle the traffic to our 25Gbit networks, while the older 1Gbit/s connected\nnodes had the gateway in a temporary router, which came to replace the old\nDR-HUYG router a few years ago.\u003c/p\u003e\n\u003cp\u003eWhile we don\u0026rsquo;t expect too much trouble, a hiccup may occur for up to a minute\nor so, while the network changes are being applied.\u003c/p\u003e","title":"Firewall change for server networks"},{"content":"We are working to upgrade the mail servers, due to caching in various parts, you may get messages about incorrect certificates or other problems, we expect this to resolve itself once we finish the updates.\nUpdate, we apparently still had problems with the certificates, but somehow missed it after last week\u0026rsquo;s fix. There\u0026rsquo;s a temporary fix in place, so we can work further on it Tomorrow.\n","permalink":"https://cncz.science.ru.nl/cpk/1396/","summary":"\u003cp\u003eWe are working to upgrade the mail servers, due to caching in various parts,\nyou may get messages about incorrect certificates or other problems, we expect\nthis to resolve itself once we finish the updates.\u003c/p\u003e\n\u003cp\u003eUpdate, we apparently still had problems with the certificates, but somehow missed it after last week\u0026rsquo;s fix.\nThere\u0026rsquo;s a temporary fix in place, so we can work further on it Tomorrow.\u003c/p\u003e","title":"Sending science mail work in progress"},{"content":"A change in the configuration management code has broken the certificate on the mailservers, we are trying to fix this properly, but until fixed, mail clients will complain about the server certificate.\nFixed by restarting sendmail\n","permalink":"https://cncz.science.ru.nl/cpk/1395/","summary":"\u003cp\u003eA change in the configuration management code has broken the certificate on the\nmailservers, we are trying to fix this properly, but until fixed, mail clients\nwill complain about the server certificate.\u003c/p\u003e\n\u003cp\u003eFixed by restarting sendmail\u003c/p\u003e","title":"Sending science mail broken certificate"},{"content":"August 5th we had a cluster maintenance day, the next cluster maintenance window will be on February 6th 2026. We will do updates to packages and reboot the nodes. We plan to do this on all cnXXX nodes, mlpXX and comaXX nodes.\nWe will not upgrade to a new version of ubuntu on this day, if you want your clusternodes to be upgraded, please arrange this seperately with us.\n","permalink":"https://cncz.science.ru.nl/news/2025-08-05_clustermaintenance_feb2026/","summary":"\u003cp\u003eAugust 5th we had a cluster maintenance day, the next cluster maintenance window will be on February 6th 2026. We will do updates to packages and reboot the nodes.\nWe plan to do this on all cnXXX nodes, mlpXX and comaXX nodes.\u003c/p\u003e\n\u003cp\u003eWe will not upgrade to a new version of ubuntu on this day, if you want your clusternodes to be upgraded, please arrange this seperately with us.\u003c/p\u003e","title":"Cluster maintenance"},{"content":"We have been working on replacing the old home servers home1 and home2 for some time now and a lot of our users have already been moved to the new home servers, home4, home5 and home6.\nIf you login to dhz.science.ru.nl you can find your home volume path, for moved users this will look like\n\\\\306a2a9df234234123123523c22054dfaf9.home.science.ru.nl\\loginname This path will not change in the future when we have to replace the home servers again. The first part is an alias for one of the new home servers. Every login will have an unique alias for its home path server.\nIn the next 2 to 3 weeks we will move the remaining users to the new servers.\nIf you can not connect to your home directory then please check the home path you are using against the one displayed in dhz.science.ru.nl.\nIf using the displayed path and you still experience problems connecting please contact us by sending mail to the helpdesk.\n","permalink":"https://cncz.science.ru.nl/news/2025-07-21_home-servers-replaced/","summary":"\u003cp\u003eWe have been working on replacing the old home servers home1 and home2 for some time now\nand a lot of our users have already been moved to the new home servers, home4, home5 and home6.\u003c/p\u003e\n\u003cp\u003eIf you login to dhz.science.ru.nl you can find your home volume path,\nfor moved users this will look like\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003e\\\\306a2a9df234234123123523c22054dfaf9.home.science.ru.nl\\loginname\n\u003c/code\u003e\u003c/pre\u003e\n\u003cp\u003eThis path will not change in the future when we have to replace the home servers again.\nThe first part is an alias for one of the new home servers.\nEvery login will have an unique alias for its home path server.\u003c/p\u003e","title":"Home servers replaced"},{"content":"We picked August 5th to have a planned downtime/reboot of all clusternodes in the Science Cluster.\nThis will involve at least package updates and a reboot, if other maintenance can be included we will try to fit this in as well.\n","permalink":"https://cncz.science.ru.nl/cpk/1394/","summary":"\u003cp\u003eWe picked August 5th to have a planned downtime/reboot of all clusternodes in the Science Cluster.\u003c/p\u003e\n\u003cp\u003eThis will involve at least package updates and a reboot, if other maintenance can be included we will try to fit this in as well.\u003c/p\u003e","title":"Clusternode maintenance day - August 5th"},{"content":"We will be moving servers from the serverroom ak008 (Huygens A-2.008) to other locations. A lot of services and virtual machines will be offline for a few hours while we disconnect, move and reconnect the hardware. Assuming everything goes well, the services should be up after turning the machines back on again.\nThis CPK will be updated with more servers and information about affected services in the weeks before the move on August 7th 2025.\nchemotion.science.ru.nl\nelabftw.science.ru.nl\nhelpdesk.science.ru.nl\nprint.science.ru.nl\nmoss.science.ru.nl\njupyter[22/24].science.ru.nl\nsmtp.science.ru.nl\nbigchemistryeln.nl\nmsql01\nwsus\nakn\ntosti\npincpoc\nrootcell\nblackgemgateway\nnolaistadswaard\nnolaidassenhof\nnolaihortus\nfilemaker.science.ru.nl\nsccm.science.ru.nl\nbfacdc05.science.ru.nl\nindico.astro.ru.nl\nautomoss\nnetbox\nip\ndesda\ndomjudge\n","permalink":"https://cncz.science.ru.nl/cpk/1393/","summary":"\u003cp\u003eWe will be moving servers from the serverroom ak008 (Huygens A-2.008) to other locations.\nA lot of services and virtual machines will be offline for a few hours while we disconnect, move and reconnect the hardware.\nAssuming everything goes well, the services should be up after turning the machines back on again.\u003c/p\u003e\n\u003cp\u003eThis CPK will be updated with more servers and information about affected services in the weeks before the move on August 7th 2025.\u003c/p\u003e","title":"Servers and services unavailable due to physical moving on August 7th"},{"content":"There are servers unreachable due to an unknown problem with the 25Gbit network switch in room ak008.\nWe don\u0026rsquo;t know the root cause yet.\nUpdate: rebooting the affected switch has resolved the problem.\nDOWN amanda22.science.ru.nl DOWN cephgrafana.science.ru.nl DOWN cephgw3.science.ru.nl DOWN cephgw4.science.ru.nl DOWN cephmon2.science.ru.nl DOWN cephosd07.science.ru.nl DOWN cephosd08.science.ru.nl DOWN cephosd09.science.ru.nl DOWN cephosd10.science.ru.nl DOWN cephosd11.science.ru.nl DOWN cephosd12.science.ru.nl DOWN cephosd13.science.ru.nl DOWN cephosd23.science.ru.nl DOWN cephosd26.science.ru.nl DOWN cephosd27.science.ru.nl DOWN chemotionvm.science.ru.nl DOWN containervm02.science.ru.nl DOWN dockervm01.science.ru.nl DOWN dockervm02.science.ru.nl DOWN dockervm03.science.ru.nl DOWN ds3-huyg.net.science.ru.nl DOWN elabrolabvm.science.ru.nl DOWN filemakervm.science.ru.nl DOWN home3.science.ru.nl DOWN jupytervm.science.ru.nl DOWN mariavm02.science.ru.nl DOWN mossvm.vm.science.ru.nl DOWN rootcell.science.ru.nl DOWN vmhost03.science.ru.nl DOWN vmhost04.science.ru.nl DOWN vmhost07.science.ru.nl DOWN zammad3.vm.science.ru.nl ","permalink":"https://cncz.science.ru.nl/cpk/1392/","summary":"\u003cp\u003eThere are servers unreachable due to an unknown problem with the 25Gbit network switch in room ak008.\u003c/p\u003e\n\u003cp\u003eWe don\u0026rsquo;t know the root cause yet.\u003c/p\u003e\n\u003cp\u003eUpdate: rebooting the affected switch has resolved the problem.\u003c/p\u003e\n\u003cpre tabindex=\"0\"\u003e\u003ccode\u003eDOWN amanda22.science.ru.nl\nDOWN cephgrafana.science.ru.nl\nDOWN cephgw3.science.ru.nl\nDOWN cephgw4.science.ru.nl\nDOWN cephmon2.science.ru.nl\nDOWN cephosd07.science.ru.nl\nDOWN cephosd08.science.ru.nl\nDOWN cephosd09.science.ru.nl\nDOWN cephosd10.science.ru.nl\nDOWN cephosd11.science.ru.nl\nDOWN cephosd12.science.ru.nl\nDOWN cephosd13.science.ru.nl\nDOWN cephosd23.science.ru.nl\nDOWN cephosd26.science.ru.nl\nDOWN cephosd27.science.ru.nl\nDOWN chemotionvm.science.ru.nl\nDOWN containervm02.science.ru.nl\nDOWN dockervm01.science.ru.nl\nDOWN dockervm02.science.ru.nl\nDOWN dockervm03.science.ru.nl\nDOWN ds3-huyg.net.science.ru.nl\nDOWN elabrolabvm.science.ru.nl\nDOWN filemakervm.science.ru.nl\nDOWN home3.science.ru.nl\nDOWN jupytervm.science.ru.nl\nDOWN mariavm02.science.ru.nl\nDOWN mossvm.vm.science.ru.nl\nDOWN rootcell.science.ru.nl\nDOWN vmhost03.science.ru.nl\nDOWN vmhost04.science.ru.nl\nDOWN vmhost07.science.ru.nl\nDOWN zammad3.vm.science.ru.nl\n\u003c/code\u003e\u003c/pre\u003e","title":"Network failure in part of network"},{"content":"Services on networks that are currently behind our old picos switches will be transferred to be behind our firewalls. This may take a few minutes of downtime due to the changes needed for moving the gateway functionality.\nIf all goes well, it will be one period of a few minutes, if we need to roll back and fix things, there may be a repeat downtime.\nAll went well, there was a few minutes of interruption on the cncz homepage due to ARP caching issues.\n","permalink":"https://cncz.science.ru.nl/cpk/1391/","summary":"\u003cp\u003eServices on networks that are currently behind our old picos switches will be\ntransferred to be behind our firewalls. This may take a few minutes of downtime\ndue to the changes needed for moving the gateway functionality.\u003c/p\u003e\n\u003cp\u003eIf all goes well, it will be one period of a few minutes, if we need to roll\nback and fix things, there may be a repeat downtime.\u003c/p\u003e\n\u003cp\u003eAll went well, there was a few minutes of interruption on the cncz homepage due to ARP caching issues.\u003c/p\u003e","title":"Planned network disruption on some server networks"},{"content":"The latest version of Matlab, R2025a, is available. The software and license codes are directly available for Science accounts and can be requested by other entitled users by sending mail to the helpdesk. The software can also be found on the install-share. All C\u0026amp;CZ-managed Linux machines have this version installed, the older version (/opt/matlab-R2024b/bin/matlab) will be available temporarily. The C\u0026amp;CZ-managed Windows machines will not receive a new version during the semester to prevent problems with version dependencies in current lectures.\n","permalink":"https://cncz.science.ru.nl/news/2025-06-12_matlab-r2025a-available/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/matlab/\"\u003eMatlab\u003c/a\u003e, R2025a, is available.\nThe software and license codes\n\u003ca href=\"https://cncz.pages.science.ru.nl/licenses/Matlab/\" target=\"_blank\"\u003eare directly available for Science accounts\u003c/a\u003e\nand can be requested by other entitled users by sending \u003ca href=\"https://cncz.science.ru.nl/howto/contact/\" target=\"_blank\"\u003email to the helpdesk\u003c/a\u003e.\nThe software can also be found on the \u003ca href=\"/tags/software\"\u003einstall\u003c/a\u003e-share. All\nC\u0026amp;CZ-managed Linux machines have this version installed, the older\nversion (/opt/matlab-R2024b/bin/matlab) will be available temporarily.\nThe C\u0026amp;CZ-managed Windows machines will not receive a new version during\nthe semester to prevent problems with version dependencies in current\nlectures.\u003c/p\u003e","title":"Matlab R2025a available"},{"content":"As most Science users have enabled their two-factor authentication, we are now going to restrict DIY functionality for accounts without a second factor. If you have not enabled a second factor, you can:\nLogin into DIY Set a password Enable your second factor All other functionally is disabled and will lead to an \u0026lsquo;Insufficient access\u0026rsquo; error. In subsequent versions of the DIY software we will (further) hide actions and listing that you will not be able to use.\nFor Science accounts that have a second factor enabled all functionality of DIY is available.\n","permalink":"https://cncz.science.ru.nl/news/2025-06-11-diy-2fa-restriction/","summary":"\u003cp\u003eAs most Science users have enabled their \u003ca href=\"/news/2025-05-14-2fa-services\"\u003etwo-factor\u003c/a\u003e authentication, we are\nnow going to restrict DIY functionality for accounts \u003cem\u003ewithout\u003c/em\u003e a second factor. If you have not enabled a second factor, you can:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eLogin into DIY\u003c/li\u003e\n\u003cli\u003eSet a password\u003c/li\u003e\n\u003cli\u003eEnable your second factor\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eAll other functionally is disabled and will lead to an \u0026lsquo;Insufficient access\u0026rsquo; error. In subsequent versions of\nthe DIY software we will (further) hide actions and listing that you will not be able to use.\u003c/p\u003e","title":"DIY functionality only available with two-factor authentication"},{"content":"Following the recent update of our LDAP servers certificates, multiple users have reported authentication failures when attempting to log in via RADIUS.\nThe issue appears to affect only users with RADIUS-based authentication, while LDAP-based authentication continues to function successfully.\nAffected users typically include HFML technicians, guest console users, and Science logins with Wi-Fi access.\n","permalink":"https://cncz.science.ru.nl/cpk/1390/","summary":"\u003cp\u003eFollowing the recent update of our LDAP servers certificates, multiple users have reported authentication failures when attempting to log in via RADIUS.\u003c/p\u003e\n\u003cp\u003eThe issue appears to affect only users with RADIUS-based authentication, while LDAP-based authentication continues to function successfully.\u003c/p\u003e\n\u003cp\u003eAffected users typically include HFML technicians, guest console users, and Science logins with Wi-Fi access.\u003c/p\u003e","title":"Authentication downtime"},{"content":"Lilo7 was running ubuntu 20.04 LTS (LTS=Long term support). Since the LTS support period has ended for ubuntu 20.04, we have turned off lilo7 on June 2nd, because there are no (free) security updates anymore for this OS release. We will repurpose the hardware for other tasks for the faculty.\nWe have a new lilo9 with Ubuntu 24.04 LTS. We will make this the new lilo on August 1st 2025. Lilo9 will remain available until end of May 2029.\nThe oldest lilo is now lilo8, you can keep using lilo8.science.ru.nl. Until August 1st you can also use lilo.science.ru.nl to log in on lilo8.\n","permalink":"https://cncz.science.ru.nl/news/2025-06-02_lilo9-becomes-lilo-lilo7-turned-off/","summary":"\u003cp\u003eLilo7 was running \u003cem\u003eubuntu 20.04 LTS\u003c/em\u003e (LTS=Long term support). Since the LTS support period has ended for ubuntu 20.04, we have turned off lilo7 on June 2nd, because there are no (free) security updates anymore for this OS release. We will repurpose the hardware for other tasks for the faculty.\u003c/p\u003e\n\u003cp\u003eWe have a new \u003ccode\u003elilo9\u003c/code\u003e with Ubuntu 24.04 LTS. We will make this the new \u003ccode\u003elilo\u003c/code\u003e on \u003cem\u003eAugust 1st 2025\u003c/em\u003e. Lilo9 will remain available until end of May 2029.\u003c/p\u003e","title":"lilo9 running ubuntu 24.04, lilo7 turned off"},{"content":" Update 2025-05-20 This has been activated around 11 \u0026lsquo;o clock.\nOn May the 20th we have enabled mandatory multifactor authentication for the following services:\nDIY web site. Roundcube, for reading mail. SSH from the internet to public servers, like the lilos. Below you can read how you can log in for each service.\nDIY Enter your Science login name, your password and the TOTP code from your authenticator app.\nIf you have configured a Yubi key with us, you can also use the Yubi key\u0026rsquo;s OTP.\nRoundcube For Roundcube the procedure is the same as for DIY.\nSSH For SSH the are 3 different scenarios:\nLogging in with password authentication:\nType your password, After the prompt: Enter 2FA token: , Enter the TOTP token from your authenticator app or your Yubi key\u0026rsquo;s OTP. Logging in with public key authentication. This requires you have configured a SSH key in DIY or via us:\nAfter the prompt: Enter 2FA token: , Enter the TOTP token from your authenticator app or your Yubi key\u0026rsquo;s OTP. Logging in with a Security Key stored on a (FIDO2 compatible) Yubi key (or similar). This requires you have configured that SSH key in DIY or via us:\nThere is no prompt (limitation in sshd), Touch the inserted Yubi key. If this fails you\u0026rsquo;ll get a sign_and_send_pubkey: signing failed for ED25519-SK \u0026quot;user@host from agent: agent refused operation and sshd will fall back to password authentication (the first item in this list).\nSetup 2FA If you have not yet set up 2FA, please look at these instructions\n","permalink":"https://cncz.science.ru.nl/news/2025-05-14-2fa-services/","summary":"\u003cblockquote\u003e\n\u003ch1 id=\"update-2025-05-20\"\u003eUpdate 2025-05-20\u003c/h1\u003e\n\u003cp\u003eThis has been activated around 11 \u0026lsquo;o clock.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cp\u003eOn May the 20th we have enabled mandatory multifactor authentication for the following services:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https://diy.science.ru.nl\" target=\"_blank\"\u003eDIY\u003c/a\u003e web site.\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://roundcube.science.ru.nl\" target=\"_blank\"\u003eRoundcube\u003c/a\u003e, for reading mail.\u003c/li\u003e\n\u003cli\u003eSSH from the internet to public servers, like the lilos.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eBelow you can read how you can log in for each service.\u003c/p\u003e\n\u003ch2 id=\"diy\"\u003eDIY\u003c/h2\u003e\n\u003cp\u003eEnter your Science login name, your password and the TOTP code from your authenticator app.\u003c/p\u003e\n\u003cp\u003eIf you have configured a Yubi key with us, you can also use the Yubi key\u0026rsquo;s OTP.\u003c/p\u003e","title":"Using multifactor authentication for Science services"},{"content":"In the transition from the older 25Gbit switches to newer switches, two blocks of 4 connections were temporarily unavailable due to a peculiarity of the switches where ports are operated in blocks of 4. The removal of an unused cable triggered a disabling of the other ports in the bunch, reseating one of these connections in one case and re-inserting the unused cable fixed the block of ports to start working again.\nThe affected machines were cn30, cn31, derpy (the homes of most mlp users) and tcmr, the fileserver for most tcm shares.\n","permalink":"https://cncz.science.ru.nl/cpk/1389/","summary":"\u003cp\u003eIn the transition from the older 25Gbit switches to newer switches, two blocks\nof 4 connections were temporarily unavailable due to a peculiarity of the\nswitches where ports are operated in blocks of 4. The removal of an unused\ncable triggered a disabling of the other ports in the bunch, reseating one of\nthese connections in one case and re-inserting the unused cable fixed the block\nof ports to start working again.\u003c/p\u003e","title":"Servers unreachable"},{"content":"Due to errors on the /vol/astro2 filesystem, we had to reboot the fileserver comas1 and take it offline to perform repairs. During this process, both /vol/astro2 and /vol/astro5 have been unavailable.\n","permalink":"https://cncz.science.ru.nl/cpk/1388/","summary":"\u003cp\u003eDue to errors on the /vol/astro2 filesystem, we had to reboot the fileserver comas1 and take it offline to perform repairs.\nDuring this process, both /vol/astro2 and /vol/astro5 have been unavailable.\u003c/p\u003e","title":"/vol/astro2 and /vol/astro5 unavailable"},{"content":"Due to errors on the filesystem /vol/astro7, we had to reboot the fileserver comas2, and take in offline to run repairs on the filesystems. During those repairs /vol/astro7 and /vol/astro6 are not available.\nLast time this happend it took 24 hours to complete\n","permalink":"https://cncz.science.ru.nl/cpk/1387/","summary":"\u003cp\u003eDue to errors on the filesystem /vol/astro7, we had to reboot the fileserver comas2, and take in offline to run repairs on the filesystems.\nDuring those repairs /vol/astro7 and /vol/astro6 are not available.\u003c/p\u003e\n\u003cp\u003eLast time this happend it took 24 hours to complete\u003c/p\u003e","title":"/vol/astro6 and /vol/astro7 unavailable"},{"content":"After the package for gitlab was updated, the service did not come up again, due to a problem with post-install scripts. After rebooting the package installation could finish and service was restored.\n","permalink":"https://cncz.science.ru.nl/cpk/1386/","summary":"\u003cp\u003eAfter the package for gitlab was updated, the service did not come up again,\ndue to a problem with post-install scripts. After rebooting the package\ninstallation could finish and service was restored.\u003c/p\u003e","title":"Gitlab/Mattermost/Pages offline after package updates"},{"content":"A new version of Mathematica (14.2.1) has been installed on all C\u0026amp;CZ managed Linux systems, older versions can still be found in /vol/mathematica.\nWhen connected wired or wireless on campus or through VPN, the software for Windows, Linux and macOS can be found on the C\u0026amp;CZ Install disc.\nDuring the installation you must specify:\nLicense server: mathematica.science.ru.nl License: L4601-6478 According to the Mathematica Quick Revision History: \u0026ldquo;Version 14.2.1 includes critical updates for Chatbook and code captions along with other bug fixes and stability improvements.\u0026rdquo;\n","permalink":"https://cncz.science.ru.nl/news/2025-04-14_new-version-of-mathematica-14-2-1/","summary":"\u003cp\u003eA new version of \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e (14.2.1) has been\ninstalled on all C\u0026amp;CZ managed Linux systems, older versions can still be\nfound in \u003ccode\u003e/vol/mathematica\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eWhen connected wired or wireless on campus or through \u003ca href=\"/howto/vpn/\"\u003eVPN\u003c/a\u003e,\nthe software for Windows, Linux and macOS can be found on the\n\u003ca href=\"https://install.science.ru.nl/science/Mathematica/\" target=\"_blank\"\u003eC\u0026amp;CZ Install disc\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eDuring the installation you must specify:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003e License server: mathematica.science.ru.nl\n License: L4601-6478\n\u003c/code\u003e\u003c/pre\u003e\n\u003cp\u003eAccording to the \u003ca href=\"https://www.wolfram.com/mathematica/quick-revision-history.html\" target=\"_blank\"\u003eMathematica Quick Revision\nHistory\u003c/a\u003e:\n\u0026ldquo;Version 14.2.1 includes critical updates for Chatbook and code captions along with other bug fixes and stability improvements.\u0026rdquo;\u003c/p\u003e","title":"New version of Mathematica 14.2.1"},{"content":"The latest version of Maple, Maple2025, for Windows/macOS/Linux can be found on the Install network share and has been installed on C\u0026amp;CZ managed Linux computers. License codes can be requested from C\u0026amp;CZ helpdesk or postmaster.\n","permalink":"https://cncz.science.ru.nl/news/2025-04-10_maple-new-version-maple2025/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/maple/\"\u003eMaple\u003c/a\u003e, Maple2025, for\nWindows/macOS/Linux can be found on the\n\u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e network share and has been installed\non C\u0026amp;CZ managed Linux computers. License codes can be requested from\nC\u0026amp;CZ helpdesk or postmaster.\u003c/p\u003e","title":"Maple new version Maple2025"},{"content":"TOTP Authenticator Apps To generate a 6-digit code for two-factor login verification, you’ll need an app. Below is a list of apps you can use for this purpose—but if none of these suit you, there are plenty of other compatible options out there.\nInfo\nTOTP is an abbreviation for Time-Based One-Time Password\nFreeOTP This app was developed by Red Hat and supports TOTP and HOTP. It can be protected with your phone\u0026rsquo;s biometric scanner or a pin code. Since this is an open source app, you don\u0026rsquo;t need any cloud based services. Available from Google Play, AppStore and F-Droid.\n2FAS Another free and open-source TOTP app with Face ID/Touch ID protection and optional cloud backup via iCloud.\nMicrosoft Authenticator This is the recommended app for multi factor authentication for Microsoft 365. A user-friendly app that supports TOTP and push-based 2FA. Syncs with your Microsoft account and can back up codes to the cloud.\nAegis A free, open-source TOTP authenticator for Android with strong security, encrypted database, and optional cloud backup. No accounts or cloud services required.\nGoogle Authenticator Similarly, the Google Authenticator is a widely used TOTP generator.\nOther If you don\u0026rsquo;t have an Android or Apple phone, the most secure alternative is to use a YubiKey. YubiKeys can be ordered at Conrad or Dustin.\n","permalink":"https://cncz.science.ru.nl/howto/diy/authenticator/","summary":"\u003ch1 id=\"totp-authenticator-apps\"\u003eTOTP Authenticator Apps\u003c/h1\u003e\n\u003cp\u003eTo generate a 6-digit code for two-factor login verification, you’ll need an app. Below is a list of apps you can use for this purpose—but if none of these suit you, there are plenty of other compatible options out there.\u003c/p\u003e\n\u003cdiv\u003e\u003csvg width=\"0\" height=\"0\" display=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003csymbol id=\"tip-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.967-111.033 248-248 248S8 392.967 8 256 119.033 8 256 8s248 111.033 248 248zM227.314 387.314l184-184c6.248-6.248 6.248-16.379 0-22.627l-22.627-22.627c-6.248-6.249-16.379-6.249-22.628 0L216 308.118l-70.059-70.059c-6.248-6.248-16.379-6.248-22.628 0l-22.627 22.627c-6.248 6.248-6.248 16.379 0 22.627l104 104c6.249 6.249 16.379 6.249 22.628.001z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"note-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"warning-notice\" viewBox=\"0 0 576 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"info-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 110c23.196 0 42 18.804 42 42s-18.804 42-42 42-42-18.804-42-42 18.804-42 42-42zm56 254c0 6.627-5.373 12-12 12h-88c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h12v-64h-12c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h64c6.627 0 12 5.373 12 12v100h12c6.627 0 12 5.373 12 12v24z\"/\u003e\u003c/symbol\u003e\u003c/svg\u003e\u003c/div\u003e\u003cdiv class=\"notice info\" \u003e\n\u003cp class=\"first notice-title\"\u003e\u003cspan class=\"icon-notice baseline\"\u003e\u003csvg\u003e\u003cuse href=\"#info-notice\"\u003e\u003c/use\u003e\u003c/svg\u003e\u003c/span\u003eInfo\u003c/p\u003e","title":"Authenticator Apps"},{"content":"On the 20th of May 2025 we are enabling 2FA (second-factor-authentication) on the C\u0026amp;CZ services: DIY, Roundcube and SSH on the login servers.\nIn this article you can find information on this roll-out and how to activate 2Fa on your Science account.\nAs mentioned in an earlier news item, we\u0026rsquo;ve finished the tests and reached the following conclusions:\nAnyone with a Science account can enable 2FA in DIY using this procedure.\nFor about 6 weeks you can enable 2FA in DIY. You must have activated 2FA by the 20th of May 2025 if you want to use: DIY, Roundcube or SSH on the login servers.\nAfter this date we\u0026rsquo;ll make those services globally reachable again, we will remove the ip restrictions.\nIf you are using network storage, nothing will change.\nUsers with a new science account need to log in to DIY within 20 days to enable 2FA, see below for more details.\nIn summary: on the 20th of May 2025 we will require 2FA on DIY, Roundcube and SSH on login severs.\nIf you are currently using an SSH public key we will also ask for a 2FA. If you have automated scripts that run into trouble because of 2fa, come talk to us.\nEnabling 2FA in DIY This is the procedure on how to enable TOTP in DIY. Note that after you enable this you are forced to use 2FA when you login into DIY the next time.\nInfo\nTOTP is an abbreviation for Time-Based One-Time Password\nYubi Key If you own a Yubi key and you want to use that for authentication (as well as TOTP), then you need to email a blurp from the Yubi key to helpdesk@science.ru.nl, as it is not (yet) possible to add this yourself in DIY.\nThe 2FA TOTP authentication must also be enabled in DIY. Once that\u0026rsquo;s the case, both methods will work for 2FA.\nNote that the Yubi key OTP relies on an external service from Yubico, which may not be available at all times, then you can still use the TOTP method.\nGitlab The C\u0026amp;CZ Gitlab service also uses 2FA, but this is a separate implementation. It remains unclear whether we can bring GitLab under the same 2FA regime as your science account.\nNew Science Accounts For a new Science account, the following procedure applies:\nWhen creating the account, a temporary password is emailed to the new user\u0026rsquo;s external address. To make setting up 2FA practically workable, it is possible to log in without 2FA for 20 days. During this 20-day period, the new user can activate 2FA for themselves in DHZ. After this period, logging in without 2FA is no longer possible. This also applies to DIY. For assistance in resolving this, please don’t hesitate to contact us.\n","permalink":"https://cncz.science.ru.nl/news/2025-03-31_2fa/","summary":"\u003cp\u003eOn the \u003cstrong\u003e20\u003csup\u003eth\u003c/sup\u003e\n of May 2025\u003c/strong\u003e we are enabling 2FA (second-factor-authentication) on the C\u0026amp;CZ services: DIY, Roundcube and SSH on the \u003ca href=\"/howto/hardware-servers/#linux-login-servers\"\u003elogin servers\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eIn this article you can find information on this roll-out and how to activate 2Fa on your Science account.\u003c/p\u003e\n\u003cp\u003eAs mentioned in an \u003ca href=\"/news/2025-01-15_2fa/\"\u003eearlier news item\u003c/a\u003e, we\u0026rsquo;ve finished the tests and reached the following conclusions:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eAnyone with a Science account can enable 2FA in DIY using \u003ca href=\"https://cncz.science.ru.nl/howto/diy/#2fa\" target=\"_blank\"\u003ethis procedure\u003c/a\u003e.\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003eFor about 6 weeks you can enable 2FA in DIY. You must have activated 2FA by the \u003cstrong\u003e20\u003csup\u003eth\u003c/sup\u003e\n of May 2025\u003c/strong\u003e if you want to use: DIY, Roundcube or SSH on the \u003ca href=\"/howto/hardware-servers/#linux-login-servers\"\u003elogin servers\u003c/a\u003e.\u003c/p\u003e","title":"Continued rollout of multifactor authentication for Science accounts"},{"content":"Due to a change in the network setup the dhcp servers for the 25 gbit networks (which are being changed to new switches and a new management method) the dns servers were unreachable by the dhcp servers. This caused the dhcp servers to be unable to resolve the names in the configuration to their ip addresses. It was fixed by a change in the central firewall.\n","permalink":"https://cncz.science.ru.nl/cpk/1385/","summary":"\u003cp\u003eDue to a change in the network setup the dhcp servers for the 25 gbit networks (which are being changed to new switches and a new management method) the dns servers were unreachable by the dhcp servers. This caused the dhcp servers to be unable to resolve the names in the configuration to their ip addresses. It was fixed by a change in the central firewall.\u003c/p\u003e","title":"DHCP on 25Gbit not working"},{"content":"Check Date This date is used to track the validity of this Science account. Near the check date the IT contact person of that account will receive a request to advance this date into the future. The aim of this feature is to make sure Science accounts are actually used and dormant ones are, eventually, removed.\nManipulating the account\u0026#39;s check date. In this form, you can extend the accounts check date by half a year (+½), a full year (+1), or go the other way and decrease it by half a year (-½).\nFor groups a similar check date exists if you are a manager of the group: it is possible to add a date after which a member of the group should be removed from it. Normally, there is no check date for a group member.\nManipulating a group member. Here you can:\nSelect a precise date for the membership to end. Extend the membership by half a year (+½). Remove the member from the group. Contact Every science account has a \u0026ldquo;managing science account\u0026rdquo;. For employees this contact is usually someone from your secretariat or your manager. If you have an U-number and you are creating your account on DIY you are required to fill this it. In this form we require a \u0026lsquo;Science login name\u0026rsquo;.\nGroup Relation This defines the relation you have with the group:\nmember: you are a direct member in this group. indirect member: you are a member by virtue of being a member in a sub group. manager: you are the manager of this group and can add and remove members. Last Seen When was this account last seen on our network? Technically this is defined as: \u0026ldquo;when did this account try to authenticate using a second factor?\u0026rdquo;. We will never disclose the precise time: this will show: \u0026ldquo;This week\u0026rdquo;, \u0026ldquo;Last week\u0026rdquo;, \u0026ldquo;This month\u0026rdquo;, \u0026ldquo;A few months ago\u0026rdquo;, \u0026ldquo;Months ago\u0026rdquo;, \u0026ldquo;This year\u0026rdquo;, \u0026ldquo;Last year\u0026rdquo;, and \u0026ldquo;A long time ago\u0026rdquo;. Also see Start Date. We display a ? if there is no date, this can for instance happen when someone only uses Science storage; as we do not track that.\nSet Your Password Open your \u0026ldquo;Change Security Settings\u0026rdquo;, type your new password twice, and click \u0026ldquo;Change Password\u0026rdquo;.\nStart Date When was this Science account created. Also see Last Seen.\nVolume Features Volumes can have several features, we list:\nbackup: backup is enabled for this volume snapshots: local filesystem snapshots are enabled. This implies a ZFS filesystem. NFS: Network File System is enabled (Unix filesharing). SMB: Session Message Block is enabled (Windows filesharing). DFS: Distributed File System is enabled. S3: Simple Storage Service is enabled (blob storage). WEBDAV: Webdav protol is enabled. SFTP: Secure File Transfer Protocol is enabled (FTP over SSH). read only: File system is set to read only. Group inclusions Group inclusions represent the hierarchical structure of nested groups. They show a group\u0026rsquo;s parent groups (ancestors) and child groups (descendants), providing a clear view of its position in the organization\u0026rsquo;s group tree. For example, a path like company \u0026lt; team \u0026lt; subteam indicates that subteam belongs to team, which in turn belongs to company.\nEffective Group Members Effective group members are the combined set of all users in a group, including those inherited from its nested subgroups. If a user belongs to multiple subgroups, they are marked to indicate duplicate membership. Hovering highlights these users to show which groups they belong to, avoiding redundancy in permissions or access management.\nAccess The section access allows you to change access to services on the network, you can:\n\u0026ldquo;Login Server Access\u0026rdquo; - enabling this allows you to have SSH access to the lilo servers. \u0026ldquo;Gitlab Access\u0026rdquo; - whether you can access Gitlab. ","permalink":"https://cncz.science.ru.nl/howto/diy/glossary/","summary":"\u003ch2 id=\"checkdate\"\u003eCheck Date\u003c/h2\u003e\n\u003cp\u003eThis date is used to track the validity of this Science account. Near the check date the IT contact\nperson of that account will receive a request to advance this date into the future.\nThe aim of this feature is to make sure Science accounts are actually used and dormant ones are,\neventually, removed.\u003c/p\u003e\n\u003cfigure\u003e\n \u003cimg loading=\"lazy\" src=\"/img/2025/diy/checkdate-account.png\"/\u003e \u003cfigcaption\u003e\n Manipulating the account\u0026#39;s check date.\n \u003c/figcaption\u003e\n\u003c/figure\u003e\n\n\u003cp\u003eIn this form, you can extend the accounts check date by half a year (+½), a full year (+1), or go the\nother way and decrease it by half a year (-½).\u003c/p\u003e","title":"Glossary"},{"content":"After our previous news message concerning the new implementation of DIY, we are now ready to announce:\nThe new DIY will go live on Thursday the 20th of March.\nThe previous DIY server will be kept running on https://prev.dhz.science.ru.nl. If there is are things that work in the old one, but not in the new one, please let us know.\nThe old DIY will be turned off on the first the 11th of April 2025.\n","permalink":"https://cncz.science.ru.nl/news/2025-03-14-dhz-live/","summary":"\u003cp\u003eAfter our \u003ca href=\"https://cncz.science.ru.nl/news/2024-12-09-new-dhz/\" target=\"_blank\"\u003eprevious news message\u003c/a\u003e\nconcerning the new implementation of DIY, we are now ready to announce:\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003eThe new \u003ca href=\"https://diy.science.ru.nl\" target=\"_blank\"\u003eDIY\u003c/a\u003e will go live on Thursday the 20th of March.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cp\u003eThe previous DIY server will be kept running on \u003ca href=\"https://prev.dhz.science.ru.nl\" target=\"_blank\"\u003ehttps://prev.dhz.science.ru.nl\u003c/a\u003e. If there is are\nthings that work in the old one, but not in the new one, please \u003ca href=\"/howto/contact\"\u003elet us know\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eThe old DIY will be turned off \u003cdel\u003eon the first\u003c/del\u003e the 11\u003csup\u003eth\u003c/sup\u003e\n of April 2025.\u003c/p\u003e","title":"New DIY website live on Thurday March 20th"},{"content":"Introduction In our Faculty, different types of data storage are offered:\nStorage class Description Risk for data loss Home directories Small (several GB), reliable, backed up storage for individuals low Network shares Larger (1-200 TB), reliable, backed up storage for individuals or groups low Local storage Not backed up storage on desktop computers and cluster nodes, likely to be lost in case of a hardware problem or when the machine gets reinstalled high Home directories Your Science login comes with a home directory of 5GB at no costs. This is a safe place to store you work related documents. Home directories are stored on reliable hardware and backupped automatically. If you need more than 5GB of storage, and you can\u0026rsquo;t clean up some data, it can be enlarged on request.\nHome directory paths Info\nThe location of your network stored homedirectory can viewed in DIY.\nOn C\u0026amp;CZ managed systems, this is where you can find your home directory: C\u0026amp;CZ systems Path Microsoft Windows U:\\ Linux /home/yourscienceloginname or /nfshome/yourscienceloginname On linux desktop systems installed as of Sept 2025, we have noticed problems when working with NFS based homedirectories. To address this, your centrally stored and backed up home directory is mounted under /nfshome/\u0026lt;username\u0026gt;.\nInfo\nNote on Backups: Files on your local PC are not backed up. The /nfshome/ mount point provides a backup-safe location in case of NFS instability.\nFrom other systems like your home PC, you can reach your home directory through the paths below: Eigen systeem Path Instructions Microsoft Windows \\\\\u0026lt;hash\u0026gt;.home.science.ru.nl\\yourscienceloginnaam connect network share macOS smb://\u0026lt;hash\u0026gt;.home.science.ru.nl/yourscienceloginnaam connect network share Linux smb://\u0026lt;hash\u0026gt;.home.science.ru.nl/yourscienceloginnaam connect network share Info\nA VPN connection is required when accessing these paths from outside of the RU network.\nAccess rights By default, home directories are only accessible to the owners themselves. However, it is possible to change the access rights (ie. chmod o+rx ~).\nNetwork shares For larger storage needs and the ability to share files in your group, there are network shares. Network shares are available as both Samba1 and NFS2 share. As mentioned in the storage overview, network shares are backed up and hosted on reliable servers. The costs involved with network shares depend on the share size.\nInfo\nAll network shares you have access to are listed on your DIY page.\nNetwork share costs and backups One TB3 (1000 GB) costs € 36 per year. This includes a backup. (Roughly a backup doubles the amount of data). A share without a backup is possible, this will cost €18/TB/year, but your data steward should approve the use of non-backup shares. Only when the total storage costs for the institute exceeds € 1000 per year will your institute be charged.\nNote that a share without backup still gets \u0026ldquo;snapshots\u0026rdquo; if it is located on our ZFS servers, but no off-server backup.\nCurrently (2024+) the largest volume size is limited to the amount of disks that fit in a server, which is roughly 200 TB.\nDepartments should not buy their own storage servers, when you need storage request it from us and we will arrange it for you on our servers.\nBackups Network shares do not have a \u0026ldquo;Recycle Bin\u0026rdquo;, if you delete a file, it\u0026rsquo;s gone, but\u0026hellip; we have backups.\nAll new shares are using ZFS and have local snapshots, which may have a recent copy of your file still available.\nOur new storage method has backups of up to 2 years with an increasing interval. After 2 years the backups are expired and removed.\nTape backups are still used for monthly backups on some older servers and yearly backups on those shares that are configured for that (not larger than a tape4. If you need longer backup retention than 2 years, please mention this when requesting storage. Tape backups are more expensive than disk backup and will be billed separately.\nNetwork share paths On C\u0026amp;CZ managed systems, this is where you can find a network share. Using sharename as an example, see below. Note that there is a difference in how we used to make the shares (old) and how it works on modern (new) servers.\nC\u0026amp;CZ systems Path Microsoft Windows new \\\\sharename.z.science.ru.nl\\sharename Microsoft Windows old \\\\sharename-srv.science.ru.nl\\sharename Linux /vol/sharename For self managed systems, you can access the following network paths:\nOwn system Path Instructions Microsoft Windows new \\\\sharename.z.science.ru.nl\\sharename connect network share Microsoft Windows old \\\\sharename-srv.science.ru.nl\\sharename connect network share macOS new smb://sharename.z.science.ru.nl/sharename connect network share macOS old smb://sharename-srv.science.ru.nl/sharename connect network share Linux new smb://sharename.z.science.ru.nl/sharename connect network share Linux old smb://sharename-srv.science.ru.nl/sharename connect network share Info\nA VPN connection is required when accessing these paths from outside of the RU network.\nAccess rights The ability to access files on these folders can be limited to a group of logins. Groups can be managed by the group owners on DIY.\nSpecial shares Some services are built on these specific shares:\nShare name Purpose Documentation dfs Virtual tree structure with links to (many) network drives DFS temp Temporary storage of files Temp share cursus Software for courses T-schijf software General (Windows) software S-schijf install Installer programs for software Install share DFS For groups with many network drives, a DFS drive is available. If your group uses this, you can access all your group\u0026rsquo;s network drives by connecting just one drive. Whether you can view the underlying drives depends on the permissions you have. The path to connect to the DFS share is:\n\\\\dfs.science.ru.nl\\dfs Or, one level deeper to directly see the tree of your group:\n\\\\dfs.science.ru.nl\\dfs\\{group directory} Ordering When ordering a network share, please send us the following details:\nDetail Description login name Your Science account share name How the share can be accessed over the network, see paths size size of the partition, see costs charge account a.k.a. kostenplaats or project code unix group (optional) The group that is granted access to the share. If not specified, a new group will be created with the same name as the share Local storage Local storage refers to disk space in or attached to systems like desktop pc\u0026rsquo;s and cluster nodes. Usually, local storage consists of single disks. In case of a disk failure, your data is likely te be lost. Local disks are usually called /scratch to remind you of the temporary nature of the storage. Local storage is not backed up. Advantages of local storage are low costs and fast disk access.\nInfo\nOn shared systems, like login servers and cluster nodes, make sure to create a personal directory in /scratch first. Ie. mkdir /scratch/$USER. And don\u0026rsquo;t forget to let your software actually write to that directory instead of the default and much smaller /tmp.\nWindows file sharing implementation by the Samba project\u0026#160;\u0026#x21a9;\u0026#xfe0e;\nNetwork file system, https://en.wikipedia.org/wiki/Network_File_System\u0026#160;\u0026#x21a9;\u0026#xfe0e;\n1TB is 1.000.000.000.000 bytes, 1 TiB = 1.099.511.627.776 bytes\u0026#160;\u0026#x21a9;\u0026#xfe0e;\nLTO6=2.5TB uncompressed, LTO7=6TB uncompressed\u0026#160;\u0026#x21a9;\u0026#xfe0e;\n","permalink":"https://cncz.science.ru.nl/howto/storage/","summary":"\u003ch1 id=\"introduction\"\u003eIntroduction\u003c/h1\u003e\n\u003cp\u003eIn our Faculty, different types of data storage are offered:\u003c/p\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eStorage class\u003c/th\u003e\n \u003cth\u003eDescription\u003c/th\u003e\n \u003cth\u003eRisk for data loss\u003c/th\u003e\n \u003c/tr\u003e\n \u003c/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003ca href=\"#home-directories\"\u003eHome directories\u003c/a\u003e\u003c/td\u003e\n \u003ctd\u003eSmall (several GB), reliable, backed up storage for individuals\u003c/td\u003e\n \u003ctd\u003elow\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003ca href=\"#network-shares\"\u003eNetwork shares\u003c/a\u003e\u003c/td\u003e\n \u003ctd\u003eLarger (1-200 TB), reliable, backed up storage for individuals or groups\u003c/td\u003e\n \u003ctd\u003elow\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003ca href=\"#local-storage\"\u003eLocal storage\u003c/a\u003e\u003c/td\u003e\n \u003ctd\u003eNot backed up storage on desktop computers and cluster nodes, likely to be lost in case of a hardware problem or when the machine gets reinstalled\u003c/td\u003e\n \u003ctd\u003ehigh\u003c/td\u003e\n \u003c/tr\u003e\n \u003c/tbody\u003e\n\u003c/table\u003e\n\u003ch1 id=\"home-directories\"\u003eHome directories\u003c/h1\u003e\n\u003cp\u003eYour Science login comes with a home directory of 5GB at no costs. This is a safe place to store you work related documents. Home directories are stored\non reliable hardware and \u003ca href=\"../backup\"\u003ebackupped\u003c/a\u003e automatically. If you need more than 5GB of storage, and you can\u0026rsquo;t \u003ca href=\"../quota/#frequent-culprits-for-eating-your-quota\"\u003eclean up some data\u003c/a\u003e, it can be enlarged on \u003ca href=\"../contact\"\u003erequest\u003c/a\u003e.\u003c/p\u003e","title":"Data storage"},{"content":"location Operations/helpdesk is located in room HG00.051.\nType of help available User support for students and staff (General IT questions) Installation and maintenance of hardware available for students, especially the computer labs and public workstations General support of computer equipment in research departments Assistance for, or advice with respect to, PC installation and software repairing PC\u0026rsquo;s and laptops ","permalink":"https://cncz.science.ru.nl/howto/werkplekondersteuning/","summary":"\u003ch2 id=\"location\"\u003elocation\u003c/h2\u003e\n\u003cp\u003eOperations/helpdesk is located in room HG00.051.\u003c/p\u003e\n\u003ch2 id=\"type-of-help-available\"\u003eType of help available\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUser support for students and staff (General IT questions)\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/howto/terminalkamers/\"\u003eInstallation and maintenance of hardware available for students, especially the computer labs and public workstations\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eGeneral support of computer equipment in research departments\u003c/li\u003e\n\u003cli\u003eAssistance for, or advice with respect to,\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"/howto/installeren-werkplek/\"\u003ePC installation and software\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/howto/reparaties/\"\u003erepairing PC\u0026rsquo;s and laptops\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e","title":"Operations, Helpdesk, User support"},{"content":"We have updated the authentication process for login servers after a succesful test we announced in CPK#1383.\nAs of now, your ~/.ssh/authorized_keys file on lilo is ignored!, instead you can send us your public ssh key (contents of the .pub file) to keep for your account. This change is designed to prevent bad actors from easily gaining persistent access. For convenience we have added the keys we have found in homedirectories that were added or modified after we restricted access to lilo, if your key is from before December 9th, you will need to send the public key to us.\nWe have also restricted access to the lilo\u0026rsquo;s to a limited number of ip ranges. With the new authentication we feel confident to open the access to more ip addresses and ip ranges where you tell us you are coming from (you can check this using ip check.\nWithout an ssh-public key, you can still use your plain login from within the Radboud network and EduVPN.\nGenerating a key pair can be done with:\nssh-keygen -t ed25519 -C \u0026#34;your_email@ru.nl\u0026#34; ","permalink":"https://cncz.science.ru.nl/news/2025-01-28_lilo_access_via_ssh_pubkey_and_ip_range/","summary":"\u003cp\u003eWe have updated the authentication process for \u003ca href=\"/howto/hardware-servers/#linux-login-servers\"\u003elogin servers\u003c/a\u003e after a succesful test we announced in \u003ca href=\"https://cncz.science.ru.nl/cpk/1383/\" target=\"_blank\"\u003eCPK#1383\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eAs of now, your \u003ccode\u003e~/.ssh/authorized_keys\u003c/code\u003e file on lilo is ignored!\u003c/strong\u003e, instead you can send us your public ssh key (contents of the \u003ccode\u003e.pub\u003c/code\u003e file) to keep for your account. This change is designed to prevent bad actors from easily gaining persistent access. For convenience we have added the keys we have found in homedirectories that were added or modified after we restricted access to lilo, if your key is from before December 9th, you will need to send the public key to us.\u003c/p\u003e","title":"lilo access with managed SSH keys and ip range"},{"content":"A package upgrade broke the internal networking on our ubuntu 20.04 docker container VMs. Internal name resolution does not work anymore.\n","permalink":"https://cncz.science.ru.nl/cpk/1384/","summary":"\u003cp\u003eA package upgrade broke the internal networking on our ubuntu 20.04 docker container VMs. Internal name resolution does not work anymore.\u003c/p\u003e","title":"ubuntu 20 docker broken"},{"content":"At the end of last year we\u0026rsquo;ve promised an update on how we are planning to make access to our services more secure. In this post we expand on those plans.\nIn short: we are going to deploy 2FA on Science accounts and make it mandatory for services that are reachable from the internet.\nHow this all works from an organizational standpoint is, at this point, not complete clear yet. Do we need a \u0026ldquo;in-person\u0026rdquo; vetting procedure? Or do we allow users to enable this themselves in DIY? Ideas on this will surface after the test period.\nFor the test we will need a few people willing to tryout 2FA, especially if you are a contact person for a few science accounts or good with SSH (not a hard requirement). If interested please let us know. The test period will run for about 6 weeks once we gathered enough people willing to help.\nBackground We have started to implement Time-based One-time Password (TOTP) as a second factor in the new DIY. We first want to roll this out to a (small) subset of Science users to gain experience.\nThis TOTP uses a 6-digit code that is generated on your phone using an authenticator-app (like \u0026ldquo;Google Authenticator\u0026rdquo;, or \u0026ldquo;Microsoft Authenticator\u0026rdquo;). We have test this and are ready to enable it in the new DIY.\nOther types of token, like hardware token, such as Yubikeys will probably also be supported in the future, but is less of a priority at the moment.\n2FA on DIY The current idea (and implementation), is that when logged with TOTP in DIY you are allowed more. One of the first things is the management of public SSH keys that are now required to log in on the LILOs. If you are a contact for other Science accounts you are also allowed to managed their public keys.\nIn the future, more things will be put \u0026ldquo;behind 2FA\u0026rdquo;; which ones will become clear during the test period.\n2FA on RoundCube RoundCube will be of the first services that will support 2FA. This support will become active in April.\n","permalink":"https://cncz.science.ru.nl/news/2025-01-15_2fa/","summary":"\u003cp\u003e\u003ca href=\"/news/2024-12-11_science-services-vpn/\"\u003eAt the end of last year\u003c/a\u003e we\u0026rsquo;ve promised an update on how\nwe are planning to make access to our services more secure. In this post we expand on those plans.\u003c/p\u003e\n\u003cp\u003eIn short: we are going to deploy 2FA on Science accounts and make it \u003cem\u003emandatory\u003c/em\u003e for services that are\nreachable from the internet.\u003c/p\u003e\n\u003cp\u003eHow this all works from an organizational standpoint is, at this point, not complete clear yet. Do\nwe need a \u0026ldquo;in-person\u0026rdquo; \u003cem\u003evetting\u003c/em\u003e procedure? Or do we allow users to enable this themselves in DIY?\nIdeas on this will surface after the test period.\u003c/p\u003e","title":"Multifactor authentication for Science accounts"},{"content":"A new version of Mathematica (14.2.0) has been installed on all C\u0026amp;CZ managed Linux systems, older versions can still be found in /vol/mathematica.\nWhen connected wired or wireless on campus or through VPN, the software for Windows, Linux and macOS can be found on the C\u0026amp;CZ Install disc.\nDuring the installation you must specify:\nLicense server: mathematica.science.ru.nl License: L4601-6478 According to the Mathematica Quick Revision History: \u0026ldquo;Version 14.2 introduces a powerful tool in Tabular, which provides a very streamlined and efficient way to handle tables of data laid out in rows and columns, with hundreds of other functions enhanced to make use of its special features. Additional new functions and improvements have been added to enhance neural nets and LLMs, work with game theory, improve GPU computation, and expand images and videos.\u0026rdquo;\n","permalink":"https://cncz.science.ru.nl/news/2025-01-26_new-version-of-mathematica-14-2-0/","summary":"\u003cp\u003eA new version of \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e (14.2.0) has been\ninstalled on all C\u0026amp;CZ managed Linux systems, older versions can still be\nfound in \u003ccode\u003e/vol/mathematica\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eWhen connected wired or wireless on campus or through \u003ca href=\"/howto/vpn/\"\u003eVPN\u003c/a\u003e,\nthe software for Windows, Linux and macOS can be found on the\n\u003ca href=\"https://install.science.ru.nl/science/Mathematica/\" target=\"_blank\"\u003eC\u0026amp;CZ Install disc\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eDuring the installation you must specify:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003e License server: mathematica.science.ru.nl\n License: L4601-6478\n\u003c/code\u003e\u003c/pre\u003e\n\u003cp\u003eAccording to the \u003ca href=\"https://www.wolfram.com/mathematica/quick-revision-history.html\" target=\"_blank\"\u003eMathematica Quick Revision\nHistory\u003c/a\u003e:\n\u0026ldquo;Version 14.2 introduces a powerful tool in Tabular, which provides a very streamlined and efficient way to handle tables of data laid out in rows and columns, with hundreds of other functions enhanced to make use of its special features. Additional new functions and improvements have been added to enhance neural nets and LLMs, work with game theory, improve GPU computation, and expand images and videos.\u0026rdquo;\u003c/p\u003e","title":"New version of Mathematica 14.2.0"},{"content":"Due to a phishing attack targeting science accounts, and the subsequent abuse of RU mail servers to sent out spam and phishing from valid science e-mail accounts, we were forced to employ a set of defensive measure as evident from cpk/1381, cpk/1382, cpk/1381.\nTo prevent further abuse (and disruption) caused by compromised accounts, we have had to temporarily restrict access to some science services. These services include:\nAnything related to e-mail: Roundcube, authenticated SMTP, IMAP, and POP3. SSH access to the LILOs (see cpk/1383 for a workaround). DIY as well as the new replacement. Email services are now being reopened on a per science account basis. A set of approximately 1,000 accounts has regained normal access. To request access, please contact us.\nTo continue using the other services, you will need to use the campus network or log in via EduVPN.\nAt the beginning of 2025, we will provide an update on how we plan to make access to our services more secure.\n","permalink":"https://cncz.science.ru.nl/news/2024-12-11_science-services-vpn/","summary":"\u003cp\u003eDue to a phishing attack targeting science accounts, and the subsequent abuse of RU mail servers to\nsent out spam and phishing from valid science e-mail accounts, we were forced to employ a set of defensive measure as evident from\n\u003ca href=\"/cpk/1383/\"\u003ecpk/1381\u003c/a\u003e, \u003ca href=\"/cpk/1382/\"\u003ecpk/1382\u003c/a\u003e, \u003ca href=\"/cpk/1381/\"\u003ecpk/1381\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eTo prevent further abuse (and disruption) caused by compromised accounts, we have had to temporarily restrict access to some science services. These services include:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eAnything related to e-mail: Roundcube, authenticated SMTP, IMAP, and POP3.\u003c/li\u003e\n\u003cli\u003eSSH access to the LILOs (see \u003ca href=\"/cpk/1383/\"\u003ecpk/1383\u003c/a\u003e for a workaround).\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://diy.science.ru.nl\" target=\"_blank\"\u003eDIY\u003c/a\u003e as well as \u003ca href=\"/news/2024-12-09-new-dhz/\"\u003ethe new replacement\u003c/a\u003e.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eEmail services are now being reopened on a per science account basis. A set of approximately 1,000 accounts has regained normal access. To request access, please \u003ca href=\"/howto/contact/\"\u003econtact us\u003c/a\u003e.\u003c/p\u003e","title":"Science services behind VPN"},{"content":"C\u0026amp;CZ has been working to replace the current DIY website to make it easier to add new functionality to it.\nThis work included a rewrite of the website and a large part of our tooling to the Go language. Taking the Dutch term for DIY (Doe Het Zelf - DHZ) prefixing it with Go, this resulted in the codename \u0026ldquo;godzilla\u0026rdquo;.\nA pre-release of this new website is running on https://godzilla.science.ru.nl. Note this site is fully functional (modulo bugs), so any changes made there are really being made to your science account. Eventually this version will run on https://diy.science.ru.nl.\nNew things that are already possible here, compared to the current DIY are:\nMore insight in volumes and their usage. Seeing the configured rclones on volumes. Viewing your SSH public keys (early preview). We\u0026rsquo;re aiming to make godzilla the production DIY before the end of the year. The current DIY will be kept running on a different URL for some (as of yet undetermined) time.\n","permalink":"https://cncz.science.ru.nl/news/2024-12-09-new-dhz/","summary":"\u003cp\u003eC\u0026amp;CZ has been working to replace the current \u003ca href=\"https://diy.science.ru.nl\" target=\"_blank\"\u003eDIY\u003c/a\u003e website to make it\neasier to add new functionality to it.\u003c/p\u003e\n\u003cp\u003eThis work included a rewrite of the website and a large part of our tooling to the\n\u003ca href=\"https://go.dev\" target=\"_blank\"\u003eGo\u003c/a\u003e language. Taking the Dutch term for DIY (\u003cem\u003eDoe Het Zelf\u003c/em\u003e - DHZ) prefixing it\nwith Go, this resulted in the codename \u0026ldquo;godzilla\u0026rdquo;.\u003c/p\u003e\n\u003cp\u003eA pre-release of this new website is running on \u003ca href=\"https://godzilla.science.ru.nl\" target=\"_blank\"\u003ehttps://godzilla.science.ru.nl\u003c/a\u003e. Note this site is\nfully functional (modulo bugs), so any changes made there are \u003cem\u003ereally\u003c/em\u003e being made to your science\naccount. Eventually this version will run on \u003ca href=\"https://diy.science.ru.nl\" target=\"_blank\"\u003ehttps://diy.science.ru.nl\u003c/a\u003e.\u003c/p\u003e","title":"New DIY website"},{"content":"We have updated the authentication process for login server lilo7 (lilo7.science.ru.nl) as part of a test.\nAs of now, your ~/.ssh/authorized_keys file on lilo7 is ignored. This change is designed to prevent bad actors from easily gaining persistent access.\nThe good news is that we can now grant access to lilo7 from outside the previously very restricted IP ranges.\nTo gain access from a new IP range, you will need to provide us with your public SSH key and the IP range you will be connecting from.\nFor connections from the restricted range, both password and key authentication remain available options.\nGenerating a key pair can be done with:\nssh-keygen -t ed25519 -C \u0026#34;your_email@ru.nl\u0026#34; If this test is successful, we plan to roll out this new authentication process to all login servers.\nUPDATE: The test was successful, see newsitem\n","permalink":"https://cncz.science.ru.nl/cpk/1383/","summary":"\u003cp\u003eWe have updated the authentication process for \u003ca href=\"/howto/hardware-servers/#linux-login-servers\"\u003elogin server\u003c/a\u003e \u003ccode\u003elilo7\u003c/code\u003e (lilo7.science.ru.nl) as part of a test.\u003c/p\u003e\n\u003cp\u003eAs of now, your \u003ccode\u003e~/.ssh/authorized_keys\u003c/code\u003e file on lilo7 is ignored. This change is designed to prevent bad actors from easily gaining persistent access.\u003c/p\u003e\n\u003cp\u003eThe good news is that we can now grant access to \u003ccode\u003elilo7\u003c/code\u003e from outside the previously very restricted IP ranges.\u003c/p\u003e\n\u003cp\u003eTo gain access from a new IP range, you will need to \u003ca href=\"/howto/contact\"\u003eprovide us\u003c/a\u003e with your public SSH key and the IP range you will be connecting from.\u003c/p\u003e","title":"lilo7 access with managed SSH keys"},{"content":"De following Science services will be placed behind eduVPN. This means if you want to have continued access, you must use this VPN.\nDe volgende Science services worden achter eduVPN gezet.\nDHZ/DIY SMTP (mail sending) LILOs Webmail If you have questions are experience problems with setting up eduVPN, please contact our helpdesk.\n","permalink":"https://cncz.science.ru.nl/cpk/1382/","summary":"\u003cp\u003eDe following Science services will be placed behind\n\u003ca href=\"https://www.ru.nl/en/staff/services/campus-facilities-buildings/ict/working-off-campus/vpn-off-campus-access-to-systems/using-eduvpn\" target=\"_blank\"\u003eeduVPN\u003c/a\u003e.\nThis means if you want to have continued access, you \u003cem\u003emust\u003c/em\u003e use this VPN.\u003c/p\u003e\n\u003cp\u003eDe volgende Science services worden achter eduVPN gezet.\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https://diy.science.ru.nl\" target=\"_blank\"\u003eDHZ/DIY\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eSMTP (mail sending)\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://cncz.science.ru.nl/nl/howto/hardware-servers/#linux-login-servers\" target=\"_blank\"\u003eLILOs\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://roundcube.science.ru.nl\" target=\"_blank\"\u003eWebmail\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eIf you have questions are experience problems with setting up eduVPN, please contact \u003ca href=\"https://cncz.science.ru.nl/howto/contact/\" target=\"_blank\"\u003eour\nhelpdesk\u003c/a\u003e.\u003c/p\u003e","title":"Science services behind eduVPN"},{"content":"Due to circumstances we are forced to shut the Science VPN with immediately effect.\nSee this news article where we previously said this would happen on December the 1st.\nIf you have questions are experience problems with setting up EduVPN, please contact our helpdesk.\n","permalink":"https://cncz.science.ru.nl/cpk/1381/","summary":"\u003cp\u003eDue to circumstances we are forced to shut the Science VPN with immediately effect.\u003c/p\u003e\n\u003cp\u003eSee this \u003ca href=\"/news/2024-11-21_vpn-off/\"\u003enews article\u003c/a\u003e where we previously said this would happen on\nDecember the 1st.\u003c/p\u003e\n\u003cp\u003eIf you have questions are experience problems with setting up EduVPN, please contact \u003ca href=\"https://cncz.science.ru.nl/howto/contact/\" target=\"_blank\"\u003eour\nhelpdesk\u003c/a\u003e.\u003c/p\u003e","title":"Science VPN offline with immediately effect"},{"content":"The webmail interface called \u0026ldquo;Rainloop\u0026rdquo; has been permanently shut down, due to the upstream project not being maintained anymore. We don\u0026rsquo;t have the resources to fix security issues or take over the open source project ourselves.\n","permalink":"https://cncz.science.ru.nl/cpk/1380/","summary":"\u003cp\u003eThe webmail interface called \u0026ldquo;Rainloop\u0026rdquo; has been permanently shut down, due to the upstream project not being maintained anymore. We don\u0026rsquo;t have the resources to fix security issues or take over the open source project ourselves.\u003c/p\u003e","title":"rainloop discontinued"},{"content":"The Science VPNsec and OpenVPN service will be discontinued as of 2024-12-01 (1 Dec 2024) 2024-11-26.\nTo ensure continued secure access to our network, we recommend transitioning to eduVPN, our officially supported VPN service.\nThis was first announced in February 2024. If you have any questions or require assistance, feel free to contact us.\n","permalink":"https://cncz.science.ru.nl/news/2024-11-21_vpn-off/","summary":"\u003cp\u003eThe Science \u003ca href=\"/howto/vpn/\"\u003eVPNsec and OpenVPN\u003c/a\u003e service will be discontinued as of \u003cs\u003e2024-12-01 (1 Dec 2024)\u003c/s\u003e 2024-11-26.\u003c/p\u003e\n\u003cp\u003eTo ensure continued secure access to our network, we recommend transitioning to eduVPN, our\n\u003ca href=\"https://www.ru.nl/en/staff/services/campus-facilities-buildings/ict/working-off-campus/vpn-off-campus-access-to-systems/using-eduvpn\" target=\"_blank\"\u003eofficially supported VPN service\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eThis was first announced in \u003ca href=\"/news/2024-02-23_use-eduvpn-instead-of-science-vpns-vpnsec-and-openvpn/\"\u003eFebruary 2024\u003c/a\u003e.\nIf you have any questions or require assistance, feel free to \u003ca href=\"/howto/contact\"\u003econtact us\u003c/a\u003e.\u003c/p\u003e","title":"Science VPN services to be discontinued"},{"content":"At the faculty of science, C\u0026amp;CZ manages a number of compute clusters and we have our own computer room with a few dozen racks for server hardware and also some racks in the Forum computer room.\nFinancial model The faculty in general doesn\u0026rsquo;t own (m)any compute nodes, departments purchase their own servers (we can help configure these), which we install and manage during their lifetime. All clusternodes can be integrated in our SLURM cluster management.\nFor departments of FNWI, housing and power is \u0026ldquo;free\u0026rdquo;, because we have currently no way to determine what to charge for it. This may change in the future as our monitoring equipment improves and policies change to include charging for power.\nWe also manage and host a separate cluster for the RU department Centre for Language Studies. External customers have custom financial agreements.\nSometimes outside of opening hours also the pcs in the computer labs are used as a compute cluster.\nA primitive overview of clusternodes is available, until we can fix something better to replace the old cricket overview.\nOther options Surf Sara\n\u0026hellip;\n","permalink":"https://cncz.science.ru.nl/howto/high-performance-computing/","summary":"\u003cp\u003eAt the faculty of science, C\u0026amp;CZ manages a number of compute clusters and we\nhave our own computer room with a few dozen racks for server hardware and also some racks\nin the \u003cem\u003eForum\u003c/em\u003e computer room.\u003c/p\u003e\n\u003ch2 id=\"financial-model\"\u003eFinancial model\u003c/h2\u003e\n\u003cp\u003eThe faculty in general doesn\u0026rsquo;t own (m)any compute nodes, departments purchase their own servers (we can help configure these), which we install and manage during their lifetime.\nAll clusternodes can be integrated in our \u003ca href=\"/howto/slurm/\"\u003eSLURM\u003c/a\u003e cluster management.\u003c/p\u003e","title":"High Performance Computing"},{"content":"A new version of Mathematica (14.1.0) has been installed on all C\u0026amp;CZ managed Linux systems, older versions can still be found in /vol/mathematica.\nWhen connected wired or wireless on campus or through VPN, the software for Windows, Linux and macOS can be found on the C\u0026amp;CZ Install disc.\nDuring the installation you must specify:\nLicense server: mathematica.science.ru.nl License: L4601-6478 According to the Mathematica Quick Revision History: \u0026ldquo;Version 14.1 introduces the unified Wolfram application and expands Wolfram Language by offering new tools for working with neural nets and LLMs, for finding differences in content, for working with images and videos, and for exploring scientific evaluations through biomolecules, astrophysics and more\u0026rdquo;\n","permalink":"https://cncz.science.ru.nl/news/2024-10-16_new-version-of-mathematica-14-1-0/","summary":"\u003cp\u003eA new version of \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e (14.1.0) has been\ninstalled on all C\u0026amp;CZ managed Linux systems, older versions can still be\nfound in \u003ccode\u003e/vol/mathematica\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eWhen connected wired or wireless on campus or through \u003ca href=\"/howto/vpn/\"\u003eVPN\u003c/a\u003e,\nthe software for Windows, Linux and macOS can be found on the\n\u003ca href=\"https://install.science.ru.nl/science/Mathematica/\" target=\"_blank\"\u003eC\u0026amp;CZ Install disc\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eDuring the installation you must specify:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003e License server: mathematica.science.ru.nl\n License: L4601-6478\n\u003c/code\u003e\u003c/pre\u003e\n\u003cp\u003eAccording to the \u003ca href=\"https://www.wolfram.com/mathematica/quick-revision-history.html\" target=\"_blank\"\u003eMathematica Quick Revision\nHistory\u003c/a\u003e:\n\u0026ldquo;Version 14.1 introduces the unified Wolfram application and expands Wolfram Language by offering new tools for working with neural nets and LLMs, for finding differences in content, for working with images and videos, and for exploring scientific evaluations through biomolecules, astrophysics and more\u0026rdquo;\u003c/p\u003e","title":"New version of Mathematica 14.1.0"},{"content":"The RADIUS service was temporarily unavailable after an automatic update of the FreeRADIUS package. RADIUS is used for authentication of Eduroam, OpenVPN, and Vpnsec when using Science accounts. The issue was automatically resolved when our RADIUS configuration was pushed to the RADIUS servers.\n","permalink":"https://cncz.science.ru.nl/cpk/1379/","summary":"\u003cp\u003eThe RADIUS service was temporarily unavailable after an automatic update of the FreeRADIUS package. RADIUS is used for authentication of Eduroam, OpenVPN, and Vpnsec when using Science accounts. The issue was automatically resolved when our RADIUS configuration was pushed to the RADIUS servers.\u003c/p\u003e","title":"Temporary RADIUS Service Disruption"},{"content":"Recently, the Radboud news reported that students can have small repairs to their laptops done in the RUpair-shop without any labor time being charged.\nFor students and employees of FNWI, the C\u0026amp;CZ helpdesk provides a similar service. Stefan Reijgwart and Dominic van den Broek in particular are specialists in repairing laptops, among other things.\n","permalink":"https://cncz.science.ru.nl/news/2024-10-03_hardware_repairs/","summary":"\u003cp\u003eRecently, the \u003ca href=\"https://www.ru.nl/en/students/news/rupair-shop-kicks-off-1-october-free-small-repairs-of-your-laptop\" target=\"_blank\"\u003eRadboud\nnews\u003c/a\u003e\nreported that students can have small repairs to their laptops done in the\n\u003ca href=\"https://www.ru.nl/en/students/services/campus-facilities-buildings/ict/hardware/rupair-shop-free-small-repairs-of-your-laptop\" target=\"_blank\"\u003eRUpair-shop\u003c/a\u003e\nwithout any labor time being charged.\u003c/p\u003e\n\u003cp\u003eFor students and employees of FNWI, the \u003ca href=\"https://cncz.science.ru.nl/howto/contact/\" target=\"_blank\"\u003eC\u0026amp;CZ\nhelpdesk\u003c/a\u003e provides a\nsimilar service. \u003ca href=\"https://www.radboudnet.nl/personen/reijgwart-s\" target=\"_blank\"\u003eStefan\nReijgwart\u003c/a\u003e and \u003ca href=\"https://www.radboudnet.nl/personen/broek-d-r-van-den\" target=\"_blank\"\u003eDominic van den Broek\u003c/a\u003e in particular are specialists\nin repairing laptops, among other things.\u003c/p\u003e","title":"Hardware repairs"},{"content":"Due to a CPU crash, the milton fileserver was down overnight. After a manual reboot the server was ok again.\n","permalink":"https://cncz.science.ru.nl/cpk/1378/","summary":"\u003cp\u003eDue to a CPU crash, the milton fileserver was down overnight. After a manual reboot the server was ok again.\u003c/p\u003e","title":"milton fileserver down"},{"content":"The fileserver we call bushel crashed for as yet unknown reasons on Friday evening. From then until the manual reboot, all its shares were down.\nAll affected shares:\n/vol/acfiles /vol/aerochem /vol/aggrgtindroplets /vol/akolkmandata /vol/albert /vol/amsbackup /vol/amscommon /vol/archivespruijt /vol/avance600 /vol/beevee /vol/bioniccell /vol/bio-orgchem /vol/bko /vol/boltje /vol/ccz /vol/cczhelpdesk /vol/cczsecr /vol/celbio1 /vol/celbio2 /vol/celbio3 /vol/chemprac /vol/chemstaff /vol/coastoffon /vol/cognac /vol/communicatie /vol/cursusdossiers /vol/desda /vol/devneurob /vol/diafragma /vol/dis /vol/ecogen /vol/ehef1 /vol/ehef2 /vol/ehef3 /vol/ehef4 /vol/epsylon /vol/femtospin /vol/frequencycomb /vol/fsr /vol/gissig /vol/gmi /vol/goudsmit1 /vol/goudsmit4 /vol/goudsmitoldusers /vol/grafting /vol/hafnerlab01 /vol/hafnerlab02 /vol/hafnerlab03 /vol/heatgenes /vol/heatyield /vol/hfml-backup /vol/hfml-backup2 /vol/hfml-backup3 /vol/hfml-backup4 /vol/hfml-backup5 /vol/highres /vol/honours /vol/huckgroup /vol/icis /vol/ifl-d1 /vol/imappdir /vol/imappdocs /vol/imappsecr /vol/immbureau /vol/immstaff /vol/impuls /vol/introcie /vol/invbio /vol/invbio2 /vol/isptinspec /vol/jupyter /vol/kaartenbak /vol/kangoeroe /vol/khaj /vol/korevaarstudents /vol/kuijperslab01 /vol/linova500 /vol/linova800 /vol/liquids /vol/mbaudit1 /vol/mbaudit3 /vol/mbaudit4 /vol/mbonderwijs /vol/mbsl /vol/mlf90 /vol/mlfalgemeen /vol/mlfsec /vol/modprspm19 /vol/molbiol /vol/morph /vol/mpcoldmollab /vol/mwstudiereis /vol/neuroinf /vol/neuroinf2 /vol/nmr500data /vol/nmrliquid400 /vol/nmrliquid500 /vol/nmrsolid000 /vol/nmrsolid300 /vol/nmrsolid400 /vol/nmrsolid600 /vol/nmrsolid850 /vol/nmrsolid950 /vol/nmrspectra /vol/oii /vol/olcii-archief /vol/olympus /vol/pcsm-share /vol/pcsoftmattersecr /vol/ppimm /vol/pracnat /vol/ruversatest /vol/sbs /vol/secrmolbiol /vol/sigma /vol/sigmacies /vol/snn3 /vol/snn4 /vol/soheto /vol/solids /vol/spacdata3 /vol/spectra /vol/spibdossier /vol/spm /vol/spm30cobp /vol/spm30febp /vol/spm30fecobp /vol/spm30mkdata1 /vol/spm30mkprojects1 /vol/spm30procobp23 /vol/spmdata3 /vol/spmdata4 /vol/spmdata5 /vol/spmdata6 /vol/spmdata7 /vol/spmexfoliation /vol/spmmagstm /vol/spmnanolab /vol/spmstaff /vol/ssi /vol/staff-hfml /vol/stroom /vol/studiereis2013 /vol/sucudo-transfer /vol/tartarus /vol/tf2devices /vol/thalia /vol/ucm /vol/unl /vol/uscm-ssi /vol/uscm-ssi-archive /vol/vsc /vol/vsc1 /vol/vsc10 /vol/vsc11 /vol/vsc12 /vol/vsc13 /vol/vsc14 /vol/vsc15 /vol/vsc16 /vol/vsc2 /vol/vsc3 /vol/vsc4 /vol/vsc5 /vol/vsc6 /vol/vsc7 /vol/vsc8 /vol/vsc9 /vol/vscadmin /vol/wiskalg /vol/wiskunde ","permalink":"https://cncz.science.ru.nl/cpk/1377/","summary":"\u003cp\u003eThe fileserver we call bushel crashed for as yet unknown reasons on Friday evening. From then until the manual reboot, all its shares were down.\u003c/p\u003e\n\u003cp\u003eAll affected shares:\u003c/p\u003e\n\u003cpre tabindex=\"0\"\u003e\u003ccode\u003e/vol/acfiles\n/vol/aerochem\n/vol/aggrgtindroplets\n/vol/akolkmandata\n/vol/albert\n/vol/amsbackup\n/vol/amscommon\n/vol/archivespruijt\n/vol/avance600\n/vol/beevee\n/vol/bioniccell\n/vol/bio-orgchem\n/vol/bko\n/vol/boltje\n/vol/ccz\n/vol/cczhelpdesk\n/vol/cczsecr\n/vol/celbio1\n/vol/celbio2\n/vol/celbio3\n/vol/chemprac\n/vol/chemstaff\n/vol/coastoffon\n/vol/cognac\n/vol/communicatie\n/vol/cursusdossiers\n/vol/desda\n/vol/devneurob\n/vol/diafragma\n/vol/dis\n/vol/ecogen\n/vol/ehef1\n/vol/ehef2\n/vol/ehef3\n/vol/ehef4\n/vol/epsylon\n/vol/femtospin\n/vol/frequencycomb\n/vol/fsr\n/vol/gissig\n/vol/gmi\n/vol/goudsmit1\n/vol/goudsmit4\n/vol/goudsmitoldusers\n/vol/grafting\n/vol/hafnerlab01\n/vol/hafnerlab02\n/vol/hafnerlab03\n/vol/heatgenes\n/vol/heatyield\n/vol/hfml-backup\n/vol/hfml-backup2\n/vol/hfml-backup3\n/vol/hfml-backup4\n/vol/hfml-backup5\n/vol/highres\n/vol/honours\n/vol/huckgroup\n/vol/icis\n/vol/ifl-d1\n/vol/imappdir\n/vol/imappdocs\n/vol/imappsecr\n/vol/immbureau\n/vol/immstaff\n/vol/impuls\n/vol/introcie\n/vol/invbio\n/vol/invbio2\n/vol/isptinspec\n/vol/jupyter\n/vol/kaartenbak\n/vol/kangoeroe\n/vol/khaj\n/vol/korevaarstudents\n/vol/kuijperslab01\n/vol/linova500\n/vol/linova800\n/vol/liquids\n/vol/mbaudit1\n/vol/mbaudit3\n/vol/mbaudit4\n/vol/mbonderwijs\n/vol/mbsl\n/vol/mlf90\n/vol/mlfalgemeen\n/vol/mlfsec\n/vol/modprspm19\n/vol/molbiol\n/vol/morph\n/vol/mpcoldmollab\n/vol/mwstudiereis\n/vol/neuroinf\n/vol/neuroinf2\n/vol/nmr500data\n/vol/nmrliquid400\n/vol/nmrliquid500\n/vol/nmrsolid000\n/vol/nmrsolid300\n/vol/nmrsolid400\n/vol/nmrsolid600\n/vol/nmrsolid850\n/vol/nmrsolid950\n/vol/nmrspectra\n/vol/oii\n/vol/olcii-archief\n/vol/olympus\n/vol/pcsm-share\n/vol/pcsoftmattersecr\n/vol/ppimm\n/vol/pracnat\n/vol/ruversatest\n/vol/sbs\n/vol/secrmolbiol\n/vol/sigma\n/vol/sigmacies\n/vol/snn3\n/vol/snn4\n/vol/soheto\n/vol/solids\n/vol/spacdata3\n/vol/spectra\n/vol/spibdossier\n/vol/spm\n/vol/spm30cobp\n/vol/spm30febp\n/vol/spm30fecobp\n/vol/spm30mkdata1\n/vol/spm30mkprojects1\n/vol/spm30procobp23\n/vol/spmdata3\n/vol/spmdata4\n/vol/spmdata5\n/vol/spmdata6\n/vol/spmdata7\n/vol/spmexfoliation\n/vol/spmmagstm\n/vol/spmnanolab\n/vol/spmstaff\n/vol/ssi\n/vol/staff-hfml\n/vol/stroom\n/vol/studiereis2013\n/vol/sucudo-transfer\n/vol/tartarus\n/vol/tf2devices\n/vol/thalia\n/vol/ucm\n/vol/unl\n/vol/uscm-ssi\n/vol/uscm-ssi-archive\n/vol/vsc\n/vol/vsc1\n/vol/vsc10\n/vol/vsc11\n/vol/vsc12\n/vol/vsc13\n/vol/vsc14\n/vol/vsc15\n/vol/vsc16\n/vol/vsc2\n/vol/vsc3\n/vol/vsc4\n/vol/vsc5\n/vol/vsc6\n/vol/vsc7\n/vol/vsc8\n/vol/vsc9\n/vol/vscadmin\n/vol/wiskalg\n/vol/wiskunde\n\u003c/code\u003e\u003c/pre\u003e","title":"fileserver bushel crashed"},{"content":"The latest version of Matlab, R2024b, is available. The software and license codes are directly available for Science accounts and can be requested by other entitled users by sending mail to the helpdesk. The software can also be found on the install-share. All C\u0026amp;CZ-managed Linux machines have this version installed, the older version (/opt/matlab-R2024a/bin/matlab) will be available temporarily. The C\u0026amp;CZ-managed Windows machines will not receive a new version during the semester to prevent problems with version dependencies in current lectures.\n","permalink":"https://cncz.science.ru.nl/news/2024-09-20_matlab-r2024b-available/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/matlab/\"\u003eMatlab\u003c/a\u003e, R2024b, is available.\nThe software and license codes\n\u003ca href=\"https://cncz.pages.science.ru.nl/licenses/Matlab/\" target=\"_blank\"\u003eare directly available for Science accounts\u003c/a\u003e\nand can be requested by other entitled users by sending \u003ca href=\"https://cncz.science.ru.nl/howto/contact/\" target=\"_blank\"\u003email to the helpdesk\u003c/a\u003e.\nThe software can also be found on the \u003ca href=\"/tags/software\"\u003einstall\u003c/a\u003e-share. All\nC\u0026amp;CZ-managed Linux machines have this version installed, the older\nversion (/opt/matlab-R2024a/bin/matlab) will be available temporarily.\nThe C\u0026amp;CZ-managed Windows machines will not receive a new version during\nthe semester to prevent problems with version dependencies in current\nlectures.\u003c/p\u003e","title":"Matlab R2024b available"},{"content":"With the introduction of Ubuntu 24.04 by C\u0026amp;CZ, it turned out that the uids/gids of some users had to be changed because they were too small. This was immediately rolled out on servers, since those are always powered on, but needed a workaround on Ubuntu client PCs.\nToday it became clear that this workaround ignored new accounts, so first year students and new employees couldn\u0026rsquo;t use Ubuntu clients. This has been fixed now and all C\u0026amp;CZ managed Ubuntu client PCs in computer labs and the Library of Science have been updated.\n","permalink":"https://cncz.science.ru.nl/cpk/1376/","summary":"\u003cp\u003eWith the introduction of Ubuntu 24.04 by C\u0026amp;CZ, it turned out that the uids/gids of some users had to be changed because they were too small.\nThis was immediately rolled out on servers, since those are always powered on, but needed a workaround on Ubuntu client PCs.\u003c/p\u003e\n\u003cp\u003eToday it became clear that this workaround ignored new accounts, so first year students and new employees couldn\u0026rsquo;t use Ubuntu clients. This has been fixed now\nand all C\u0026amp;CZ managed Ubuntu client PCs in computer labs and the Library of Science have been updated.\u003c/p\u003e","title":"Ubuntu PC password files not updated"},{"content":"Gitlab pages was unavailable due to a problem with the underlying S3 storage. It took a while to fix, due to confusing messages in the logfiles of the service. title: gitlab pages onbruikbaar door storing in rados gw\n","permalink":"https://cncz.science.ru.nl/cpk/1375/","summary":"\u003cp\u003eGitlab pages was unavailable due to a problem with the underlying S3 storage.\nIt took a while to fix, due to confusing messages in the logfiles of the service.\ntitle: gitlab pages onbruikbaar door storing in rados gw\u003c/p\u003e","title":"gitlab pages unavailable due to failure of the rados gw"},{"content":"The backing store for gitlab-pages, accessed via the S3 protocol, went into failure mode for still unknown reasons. After restarting several servers of the storage cluster, the service became available again.\nupdate 20-08-2024 It happened again Today at 12:15, fixed quicky (within 20 min)\n","permalink":"https://cncz.science.ru.nl/cpk/1374/","summary":"\u003cp\u003eThe backing store for gitlab-pages, accessed via the S3 protocol, went into\nfailure mode for still unknown reasons. After restarting several servers of the\nstorage cluster, the service became available again.\u003c/p\u003e\n\u003ch2 id=\"update-20-08-2024\"\u003eupdate 20-08-2024\u003c/h2\u003e\n\u003cp\u003eIt happened again Today at 12:15, fixed quicky (within 20 min)\u003c/p\u003e","title":"gitlab pages broken by failing backing store"},{"content":"Recently we have received and confirmed issues with delivering e-mail to certain domains, so far:\nadelaide.edu.au applemusic.com arizona.edu benwhale.com biologists.com communications.ssrn.com editorialmanager.com email.arizona.edu flinders.edu.au herts.ac.uk hireright.com hpeprint.com inhousevtm.com insideapple.apple.com ioppublishing.org mail.coinbase.com math.arizona.edu medicalschemes.com mq.edu.au newcastle.edu.au nonzeroratio.com skao.int sussex.ac.uk sydney.edu.au telegram.com uct.ac.za unimelb.edu.au uon.edu.au uow.edu.au uws.edu.au vistaprint.com webofscience.com westernsydney.edu.au woodpartners.com woolcock.org.au The mechanism by which this fails is getting clearer, but we are still figuring out how to deal with this. What most of these domains have in common is that they are hosted by the same service provider (mimecast.com). It appears to be something with the negotiation failing before the mail can be sent, which was no problem before as mails took another route after delivery failure.\nUpdate 2024-08-13 We have established that upgrading our sendmail from 8.15 to 8.18 fixes the problem. Somehow sendmail 8.15 has a problem with STARTTLS that is fixed in later versions.\nUpdate 2024-08-14 All smtp servers are running the new binary.\n","permalink":"https://cncz.science.ru.nl/cpk/1373/","summary":"\u003cp\u003eRecently we have received and confirmed issues with delivering e-mail to certain domains, so far:\u003c/p\u003e\n\u003cpre tabindex=\"0\"\u003e\u003ccode\u003eadelaide.edu.au\napplemusic.com\narizona.edu\nbenwhale.com\nbiologists.com\ncommunications.ssrn.com\neditorialmanager.com\nemail.arizona.edu\nflinders.edu.au\nherts.ac.uk\nhireright.com\nhpeprint.com\ninhousevtm.com\ninsideapple.apple.com\nioppublishing.org\nmail.coinbase.com\nmath.arizona.edu\nmedicalschemes.com\nmq.edu.au\nnewcastle.edu.au\nnonzeroratio.com\nskao.int\nsussex.ac.uk\nsydney.edu.au\ntelegram.com\nuct.ac.za\nunimelb.edu.au\nuon.edu.au\nuow.edu.au\nuws.edu.au\nvistaprint.com\nwebofscience.com\nwesternsydney.edu.au\nwoodpartners.com\nwoolcock.org.au\n\u003c/code\u003e\u003c/pre\u003e\u003cp\u003eThe mechanism by which this fails is getting clearer, but we are still figuring\nout how to deal with this. What most of these domains have in common is that\nthey are hosted by the same service provider (mimecast.com). It appears to be\nsomething with the negotiation failing before the mail can be sent, which was no\nproblem before as mails took another route after delivery failure.\u003c/p\u003e","title":"e-mail delivery issues"},{"content":"After a network configuration update, we are currently experiencing issues with the Science VPN connections, resulting in no traffic passing through. We are investigating the cause of this issue. As an alternative, we recommend using EduVPN from SURF.\n","permalink":"https://cncz.science.ru.nl/cpk/1372/","summary":"\u003cp\u003eAfter a network configuration update, we are currently experiencing issues with the Science VPN connections,\nresulting in no traffic passing through. We are investigating the cause of this issue. As an alternative, we\nrecommend using \u003ca href=\"../../howto/vpn#eduvpn\"\u003eEduVPN\u003c/a\u003e from SURF.\u003c/p\u003e","title":"Science VPN problems"},{"content":"If you use C\u0026amp;CZ storage, you now have the new option to access these via network protocols other than SMB (for Windows and macOS) and NFS (for Linux), namely:\nsftp: a secure variant of FTP https: a (read-only) view of the share for browsers webdavs: a (read-write) view of the share for browsers and webdav clients s3: a read/write view using the Simple Storage Service (S3) Each of these may be active at the same time, and optionally can have an end date, so you can \u0026ldquo;open up\u0026rdquo; a share for writes from another organisation which then automatically \u0026ldquo;closes\u0026rdquo; at the end date. For sftp, authentication is done via an SSH key. The other protocols are authenticated with a username and password. These credentials are not tied to any person and are easily revoked or re-generated if the need arises.\nThis service is based on rclone.\nPlease contact us if you want more information or would like to have this configured for your shares.\n","permalink":"https://cncz.science.ru.nl/news/2024-06-26-rclone/","summary":"\u003cp\u003eIf you use \u003ca href=\"/howto/storage/#network-shares\"\u003eC\u0026amp;CZ storage\u003c/a\u003e, you now have the new option\nto access these via network protocols other than SMB (for Windows and macOS) and NFS (for Linux), namely:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ccode\u003esftp\u003c/code\u003e: a secure variant of FTP\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ehttps\u003c/code\u003e: a (read-only) view of the share for browsers\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ewebdavs\u003c/code\u003e: a (read-write) view of the share for browsers and webdav clients\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003es3\u003c/code\u003e: a read/write view using the Simple Storage Service (S3)\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eEach of these may be active at the same time, and optionally can have an end date, so you can \u0026ldquo;open\nup\u0026rdquo; a share for writes from another organisation which then automatically \u0026ldquo;closes\u0026rdquo; at the end date.\nFor \u003ccode\u003esftp\u003c/code\u003e, authentication is done via an SSH key.\nThe other protocols are authenticated with a username and password. These credentials are not tied to any person and are easily revoked or re-generated if the need arises.\u003c/p\u003e","title":"Access network shares via other network protocols"},{"content":"We apologize for the inconvenience, but due to a software error, an (end date notification email)[https://cncz.science.ru.nl/howto/emailcodes/#login-3] was mistakenly sent to too many recipients. Please disregard and delete the email. If the email was intended for you, we will resend it next week. We are working on a fix to prevend this kind of error in the future.\n","permalink":"https://cncz.science.ru.nl/cpk/1371/","summary":"\u003cp\u003eWe apologize for the inconvenience, but due to a software error, an\n(end date notification email)[https://cncz.science.ru.nl/howto/emailcodes/#login-3] was\nmistakenly sent to too many recipients. Please disregard and delete the email.\nIf the email was intended for you, we will resend it next week. We are working on a fix to\nprevend this kind of error in the future.\u003c/p\u003e","title":"Email sent to too many people"},{"content":"Science LDAP services are all unavailable, our radius service depends on this, so this also doesn\u0026rsquo;t work.\nThe TLS certificate has expired, after renewing the certificate and restarting the service it works again.\n","permalink":"https://cncz.science.ru.nl/cpk/1370/","summary":"\u003cp\u003eScience LDAP services are all unavailable, our radius service depends on this, so this also doesn\u0026rsquo;t work.\u003c/p\u003e\n\u003cp\u003eThe TLS certificate has expired, after renewing the certificate and restarting the service it works again.\u003c/p\u003e","title":"ldap services down"},{"content":"The Science mailservice used Spamhaus for decades as one of the blocklists to filter spam in mail.\nWhen we were notified that we would need a commercial license that would cost ca. 5kEUR/y, we investigated how much more spam would come through without the Spamhaus service. This showed that users would get more spam, but most of it would be delivered in the Spam folder. Next to that, we expect that the spam filtering of the also used Exchange Online Protection will improve.\nTherefore we stopped using Spamhaus at the end of April 2024. If many users complain about spam getting through, we can always reconsider this decision.\n","permalink":"https://cncz.science.ru.nl/news/2024-06-14_a-bit-more-spam-after-ending-use-of-spamhaus/","summary":"\u003cp\u003eThe Science mailservice used \u003ca href=\"https://www.spamhaus.org\" target=\"_blank\"\u003eSpamhaus\u003c/a\u003e for\ndecades as one of the blocklists to filter spam in mail.\u003c/p\u003e\n\u003cp\u003eWhen we were notified that we would need a commercial license that would\ncost ca. 5kEUR/y, we investigated how much more spam would come through\nwithout the Spamhaus service. This showed that users would get more spam,\nbut most of it would be delivered in the Spam folder. Next to that, we expect that\nthe spam filtering of the also used Exchange Online Protection will improve.\u003c/p\u003e","title":"A bit more spam after ending use of Spamhaus"},{"content":"Due to a configuration error on the fileserver bushel, the NFS process did not run after a reboot. After correcting this error, the NFS service has been restarted.\n","permalink":"https://cncz.science.ru.nl/cpk/1369/","summary":"\u003cp\u003eDue to a configuration error on the fileserver \u003ccode\u003ebushel\u003c/code\u003e, the NFS process did not run after a reboot.\nAfter correcting this error, the NFS service has been restarted.\u003c/p\u003e","title":"Network shares of fileserver bushel could not be mounted login servers and cluster nodes"},{"content":"After a software upgrade and reboot of the AR-114-9 modules, dhcp relay from the Picos network is broken. The cause is still not 100% clear, we will update this incident when we know more.\nWe tried setting up dhcp servers within the picos network, but this didn\u0026rsquo;t solve the issue. We now suspect the picos switch itself, which we will try to restart in the morning of June 6th (between 7:30 and 8:30). This will affect all connections behind the picos switches. We hope the downtime will be less than 10 minutes.\nAffected clients are mostly vms on csvmh* machines, a workaround is to configure static addresses on the clients, effectively bypassing dhcp.\nupdate June 6th The reboot of the picos switches (PicOS is the network operating system of the whitelabel switches we have for 25Gbit/s network) didn\u0026rsquo;t solve the issue.\nWe solved it by using broadcast dhcp instead of relayed dhcp\n","permalink":"https://cncz.science.ru.nl/cpk/1368/","summary":"\u003cp\u003eAfter a software upgrade and reboot of the AR-114-9 modules, dhcp relay from\nthe Picos network is broken. The cause is still not 100% clear, we will update\nthis incident when we know more.\u003c/p\u003e\n\u003cp\u003eWe tried setting up dhcp servers within the picos network, but this didn\u0026rsquo;t\nsolve the issue. We now suspect the picos switch itself, which we will try to\nrestart in the morning of June 6th (between 7:30 and 8:30). This will affect\nall connections behind the picos switches. We hope the downtime will be less\nthan 10 minutes.\u003c/p\u003e","title":"DHCP broken in a part of the datacenter"},{"content":"Last week, a new version of the Bookings Platform for Scientific Devices has been released.\nTogether with Emendis, we have given the application a total make-over: not only the look and feel have changed, but also the underlying technique has been revised. From now on, we will use SurfConext for authentication.\nWe wish to thank all colleagues who helped us to test the new application, and in particular, we thank for all his efforts in the last years.\nFor questions concerning the new application, please contact C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2024-06-03_new-version-bookings/","summary":"\u003cp\u003eLast week, a new version of the Bookings Platform for Scientific Devices has been released.\u003c/p\u003e\n\u003cp\u003eTogether with \u003ca href=\"https://www.emendis.nl/\" target=\"_blank\"\u003eEmendis\u003c/a\u003e, we have given the application a total make-over: not only the look and feel have changed, but also the underlying technique has been revised.\nFrom now on, we will use SurfConext for authentication.\u003c/p\u003e\n\u003cp\u003eWe wish to thank all colleagues who helped us to test the new application, and in particular, we thank \n for all his efforts in the last years.\u003c/p\u003e","title":"New version of Bookings"},{"content":"All license info, including the license codes, are now readily available for all Science users at the Science license overview page for the Science software managed by C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2024-05-30_science-software-licenses-url/","summary":"\u003cp\u003eAll license info, including the license codes, are now readily available for all\nScience users at \u003ca href=\"https://cncz.pages.science.ru.nl/licenses/\" target=\"_blank\"\u003ethe Science license overview page\u003c/a\u003e\nfor the Science software managed by C\u0026amp;CZ.\u003c/p\u003e","title":"Science software licenses URL"},{"content":"Due to a configuration error the licenseserver for several of our licenses did not start automatically. Previously the server did autostart, however the cause of the configuration change is unknown. The configuration of the license server has been fixed.\n","permalink":"https://cncz.science.ru.nl/cpk/1367/","summary":"\u003cp\u003eDue to a configuration error the licenseserver for several of our licenses did not start automatically.\nPreviously the server did autostart, however the cause of the configuration change is unknown.\nThe configuration of the license server has been fixed.\u003c/p\u003e","title":"license server down"},{"content":"Due to some unexpected reaction to a config change, the licenseserver for several of our licenses was misconfigured for about 40minutes. The change was reverted, but it took long enough for users to run into license problems.\n","permalink":"https://cncz.science.ru.nl/cpk/1366/","summary":"\u003cp\u003eDue to some unexpected reaction to a config change, the licenseserver for\nseveral of our licenses was misconfigured for about 40minutes. The change was\nreverted, but it took long enough for users to run into license problems.\u003c/p\u003e","title":"license server down"},{"content":"Even though we closed CPK #1359, the user\u0026rsquo;s shares are not all restored. We have recovered the data from cephfs to temporary storage that is not accessible to users, it will take a bit more time to find new permanent locations for this data.\nThe storage will not be cluster based anymore, but single server ZFS with snapshots.\n","permalink":"https://cncz.science.ru.nl/cpk/1365/","summary":"\u003cp\u003eEven though we closed \u003ca href=\"https://cncz.science.ru.nl/cpk/1359/\" target=\"_blank\"\u003eCPK #1359\u003c/a\u003e, the\nuser\u0026rsquo;s shares are not all restored. We have recovered the data from cephfs to\ntemporary storage that is not accessible to users, it will take a bit more time\nto find new permanent locations for this data.\u003c/p\u003e\n\u003cp\u003eThe storage will not be cluster based anymore, but single server ZFS with\nsnapshots.\u003c/p\u003e","title":"restore old ceph shares to new locations"},{"content":"Some of our network shares were temporarily unavailable earlier due to a configuration error. The issue has been resolved and all shares should be accessible now. We want to assure you that the configuration error that occurred did not impact the integrity or security of the data stored on the file server. We apologize for any inconvenience this may have caused. In the meantime, we\u0026rsquo;re working on making information about network shares readily available on DIY for your reference.\n","permalink":"https://cncz.science.ru.nl/cpk/1364/","summary":"\u003cp\u003eSome of our network shares were temporarily unavailable earlier due to a configuration error. The issue has been resolved and all shares should be accessible now. We want to assure you that the configuration error that occurred did not impact the integrity or security of the data stored on the file server.\nWe apologize for any inconvenience this may have caused.\nIn the meantime, we\u0026rsquo;re working on making information about network shares readily available on \u003ca href=\"https://diy.science.ru.nl\" target=\"_blank\"\u003eDIY\u003c/a\u003e for your reference.\u003c/p\u003e","title":"Some network shares temporary unavailable"},{"content":"After the storage downtime of CephFS in our Ceph cluster, we decided together with the users of this service to stop offering CephFS shares through SMB and NFS.\nAll data has been copied out of CephFS.\nWe have ended the CephFS service. We will only use the Ceph cluster to store our backups, using the S3 API.\n","permalink":"https://cncz.science.ru.nl/news/2024-04-15_cephfs-retired/","summary":"\u003cp\u003eAfter the \u003ca href=\"https://cncz.science.ru.nl/cpk/1359/\" target=\"_blank\"\u003estorage downtime\u003c/a\u003e of CephFS in our Ceph cluster, we decided\ntogether with the users of this service to stop offering CephFS shares through SMB and NFS.\u003c/p\u003e\n\u003cp\u003eAll data has been copied out of CephFS.\u003c/p\u003e\n\u003cp\u003eWe have ended the CephFS service. We will only use the Ceph cluster to store our backups, using the S3 API.\u003c/p\u003e","title":"CephFS retired"},{"content":"Some users may have experienced difficulty launching MATLAB this morning due to a temporary issue with the license server. We identified the problem and resolved it by manually restarting the server. MATLAB licensing should now be functioning normally. We apologize for any inconvenience this may have caused.\n","permalink":"https://cncz.science.ru.nl/cpk/1363/","summary":"\u003cp\u003eSome users may have experienced difficulty launching MATLAB this morning due to a temporary issue with the license server.\nWe identified the problem and resolved it by manually restarting the server.\nMATLAB licensing should now be functioning normally. We apologize for any inconvenience this may have caused.\u003c/p\u003e","title":"Brief disruption to Matlab Licensing this morning"},{"content":"We have enabled a service called superchown. This service allows you as a volume owner to change the ownership of files in the volume. Previously, you would need to send an email to make these changes, but with superchown you can do it yourself.\nCurrently this is implemented as a command line utility that is available on the LILOs. Its manual page has all the details:\nman superchown If you have further questions, or want to use superchown, please send us an email.\n","permalink":"https://cncz.science.ru.nl/news/2024-04-09_superchown/","summary":"\u003cp\u003eWe have enabled a service called \u003cstrong\u003esuperchown\u003c/strong\u003e. This service allows you as a volume owner to change\nthe ownership of files in the volume. Previously, you would need to \u003ca href=\"../../howto/contact\"\u003esend an email\u003c/a\u003e to\nmake these changes, but with \u003cstrong\u003esuperchown\u003c/strong\u003e you can do it yourself.\u003c/p\u003e\n\u003cp\u003eCurrently this is implemented as a command line utility that is available on the\n\u003ca href=\"/howto/hardware-servers/#linux-login-servers\"\u003eLILOs\u003c/a\u003e. Its manual page has all the details:\u003c/p\u003e\n\u003cpre tabindex=\"0\"\u003e\u003ccode\u003eman superchown\n\u003c/code\u003e\u003c/pre\u003e\u003cp\u003eIf you have further questions, or want to use \u003cstrong\u003esuperchown\u003c/strong\u003e, please \u003ca href=\"../../howto/contact\"\u003esend us an email\u003c/a\u003e.\u003c/p\u003e","title":"Superchown"},{"content":"The latest version of Matlab, R2024a, is available. The software and license codes can be obtained through a mail to postmaster for those entitled to it. The software can also be found on the install-share. All C\u0026amp;CZ-managed Linux machines have this version installed, the older version (/opt/matlab-R2023b/bin/matlab) will be available temporarily. The C\u0026amp;CZ-managed Windows machines will not receive a new version during the semester to prevent problems with version dependencies in current lectures.\n","permalink":"https://cncz.science.ru.nl/news/2024-04-05_matlab-r2024a-available/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/matlab/\"\u003eMatlab\u003c/a\u003e, R2024a, is available.\nThe software and license codes can\nbe obtained through a mail to postmaster for those entitled to it. The\nsoftware can also be found on the \u003ca href=\"/tags/software\"\u003einstall\u003c/a\u003e-share. All\nC\u0026amp;CZ-managed Linux machines have this version installed, the older\nversion (/opt/matlab-R2023b/bin/matlab) will be available temporarily.\nThe C\u0026amp;CZ-managed Windows machines will not receive a new version during\nthe semester to prevent problems with version dependencies in current\nlectures.\u003c/p\u003e","title":"Matlab R2024a available"},{"content":"After migrating to a new mailbox server on Sunday, March 31, we noticed different behaviour in the processing of mailbox filters (by the Sieve software).\nFirstly, the \u0026lsquo;include\u0026rsquo; of global spam+virus filtering rules had a side-effect which has been fixed using a newer version of the software.\nSecondly, the default behaviour of the \u0026lsquo;fileinto\u0026rsquo; statement underwent a change: previously, it featured an implicit \u0026lsquo;stop\u0026rsquo; statement, but now it requires an explicit \u0026lsquo;stop\u0026rsquo; statement after the \u0026lsquo;fileinto\u0026rsquo; to achieve the same effect.\nThese modifications have inadvertently caused additional copies of emails to be placed in users\u0026rsquo; INBOX folder(s), using their own Sieve filter rules.\n","permalink":"https://cncz.science.ru.nl/cpk/1362/","summary":"\u003cp\u003eAfter migrating to a new mailbox server on Sunday, March 31, we noticed different behaviour in the processing of mailbox filters (by the Sieve software).\u003c/p\u003e\n\u003cp\u003eFirstly, the \u0026lsquo;include\u0026rsquo; of global spam+virus filtering rules had a side-effect which has been fixed using a newer version of the software.\u003c/p\u003e\n\u003cp\u003eSecondly, the default behaviour of the \u0026lsquo;fileinto\u0026rsquo; statement underwent a change: previously, it featured an implicit \u0026lsquo;stop\u0026rsquo; statement, but now it requires an explicit \u0026lsquo;stop\u0026rsquo; statement after the \u0026lsquo;fileinto\u0026rsquo; to achieve the same effect.\u003c/p\u003e","title":"Sieve difference(s) current mailbox server"},{"content":"home1 had a problem with the nfs server after the reboot. Another reboot fixed it.\n","permalink":"https://cncz.science.ru.nl/cpk/1361/","summary":"\u003cp\u003e\u003ccode\u003ehome1\u003c/code\u003e had a problem with the nfs server after the reboot. Another reboot fixed it.\u003c/p\u003e","title":"homeserver home1 nfs problem"},{"content":"In Easter Weekend (March 30th 2024) the new mailserver will replace the old one. The final switch will take a short while, during which mail clients (eg Thunderbird, mail on your phone, etc.) will not be able to connect to the science mailserver. (This is a week later than announced, due to some issues that need to be resolved before final migration)\nCentral mail services (Microsoft @ru.nl) are independent of our mailserver and thus will not be affected at all.\n","permalink":"https://cncz.science.ru.nl/cpk/1360/","summary":"\u003cp\u003eIn Easter Weekend (March 30th 2024) the new mailserver will replace the old one. The final switch will take a short while, during which mail clients (eg Thunderbird, mail on your phone, etc.) will not be able to connect to the science mailserver. (This is a week later than announced, due to some issues that need to be resolved before final migration)\u003c/p\u003e\n\u003cp\u003eCentral mail services (Microsoft \u003ccode\u003e@ru.nl\u003c/code\u003e) are independent of our mailserver and thus will not be affected at all.\u003c/p\u003e","title":"mailserver will be replaced Easter weekend"},{"content":"The latest version of Maple, Maple2024, for Windows/macOS/Linux can be found on the Install network share and has been installed on C\u0026amp;CZ managed Linux computers. License codes can be requested from C\u0026amp;CZ helpdesk or postmaster.\n","permalink":"https://cncz.science.ru.nl/news/2024-03-22_maple-new-version-maple2024/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/maple/\"\u003eMaple\u003c/a\u003e, Maple2024, for\nWindows/macOS/Linux can be found on the\n\u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e network share and has been installed\non C\u0026amp;CZ managed Linux computers. License codes can be requested from\nC\u0026amp;CZ helpdesk or postmaster.\u003c/p\u003e","title":"Maple new version Maple2024"},{"content":"The license for the LabVIEW from NI has been prolonged until April 16, 2025. This license is for the versions 2022Q3 and higher, that use a subscription model.\nThe new 2024Q1 software can be found on the C\u0026amp;CZ Install disc. The license server is:\nlabview.science.ru.nl:28000 In order to be able to check out a license, names of pc\u0026rsquo;s and/of users have to be entered by C\u0026amp;CZ in the license server. For remote pcs this DNS suffix has to be added to the IPv4 DNS configuration: science.ru.nl\nC\u0026amp;CZ manages a FlexNet license server for LabVIEW 2022Q3 and higher, with a limited number of licenses and a deadline in April for extension of the license. Earlier versions of LabVIEW work standalone and unlimited in terms of time.\n","permalink":"https://cncz.science.ru.nl/news/2024-03-19_ni-labview-license-prolonged-and-new-version/","summary":"\u003cp\u003eThe license for the \u003ca href=\"/howto/labview/\"\u003eLabVIEW\u003c/a\u003e from \u003ca href=\"https://ni.com\" target=\"_blank\"\u003eNI\u003c/a\u003e has been prolonged until April 16, 2025.\nThis license is for the versions 2022Q3 and higher, that use a subscription model.\u003c/p\u003e\n\u003cp\u003eThe new 2024Q1 software can be found on the \u003ca href=\"https://cncz.science.ru.nl/howto/install-share/\" target=\"_blank\"\u003eC\u0026amp;CZ Install disc\u003c/a\u003e. The license server is:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003elabview.science.ru.nl:28000\n\u003c/code\u003e\u003c/pre\u003e\n\u003cp\u003eIn order to be able to check out a license, names of pc\u0026rsquo;s and/of users have to be entered by C\u0026amp;CZ in the license server.\nFor remote pcs this DNS suffix has to be added to the IPv4 DNS configuration: science.ru.nl\u003c/p\u003e","title":"NI LabVIEW license prolonged and new version"},{"content":"The Lilo servers are Linux servers for general use, with the caveat:\nYou can use it just as you like, as long as you do not cause problems for other users.\nTo help enforce this we are enabling a memory limit of 25% per user. This means a single user on lilo[78] can allocate up to 16 GiB.\n","permalink":"https://cncz.science.ru.nl/news/2024-02-28_lilo-mem-limit/","summary":"\u003cp\u003eThe \u003ca href=\"https://cncz.science.ru.nl/howto/hardware-servers/#linux-loginservers\" target=\"_blank\"\u003eLilo servers\u003c/a\u003e are\nLinux servers for general use, with the caveat:\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003eYou can use it just as you like, as long as you do not cause problems for other users.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cp\u003eTo help enforce this we are enabling a memory limit of 25% \u003cem\u003eper user\u003c/em\u003e. This means a single user on\nlilo[78] can allocate up to 16 GiB.\u003c/p\u003e","title":"Lilo: Per User Memory Limit"},{"content":"For RU students and employees, the SURF service eduVPN has many advantages over the older Science VPNs: VPNsec and OpenVPN. It\u0026rsquo;s very easy to install and use eduVPN on Windows/macOS/Android/iOS/Linux and you have access to all Science services that are also available through the Science VPNsec/OpenVPN. We list it on our VPN page as the primary VPN to use.\nWe advise users of the Science VPNs to move over to eduVPN.\n","permalink":"https://cncz.science.ru.nl/news/2024-02-23_use-eduvpn-instead-of-science-vpns-vpnsec-and-openvpn/","summary":"\u003cp\u003eFor RU students and employees, the \u003ca href=\"https://www.surf.nl/en/services/eduvpn\" target=\"_blank\"\u003eSURF service eduVPN\u003c/a\u003e has many advantages over\nthe older Science VPNs: VPNsec and OpenVPN. It\u0026rsquo;s very easy to\n\u003ca href=\"https://www.ru.nl/en/staff/services/services-and-facilities/ict/working-off-campus/why-should-you-use-eduvpn/using-eduvpn\" target=\"_blank\"\u003einstall and use eduVPN on Windows/macOS/Android/iOS/Linux\u003c/a\u003e\nand you have access to all Science services that are also available through the Science VPNsec/OpenVPN.\nWe list it on \u003ca href=\"/howto/vpn/\"\u003eour VPN page\u003c/a\u003e as the primary VPN to use.\u003c/p\u003e\n\u003cp\u003eWe advise users of the Science VPNs to \u003ca href=\"https://www.ru.nl/en/staff/services/services-and-facilities/ict/working-off-campus/why-should-you-use-eduvpn/using-eduvpn\" target=\"_blank\"\u003emove over to eduVPN\u003c/a\u003e.\u003c/p\u003e","title":"Use eduVPN instead of Science VPNs VPNsec/OpenVPN"},{"content":"A new version of Mathematica (14.0.0) has been installed on all C\u0026amp;CZ managed Linux systems, older versions can still be found in /vol/mathematica.\nWhen connected wired or wireless on campus or through VPN, the software for Windows, Linux and macOS can be found on the C\u0026amp;CZ Install disc.\nDuring the installation you must specify:\nLicense server: mathematica.science.ru.nl License: L4601-6478 According to the Mathematica Quick Revision History: \u0026ldquo;Version 14.0 continues to expand the scope and breadth of our computational coverage while streamlining and polishing existing areas.\u0026rdquo;\n","permalink":"https://cncz.science.ru.nl/news/2024-02-16_new-version-of-mathematica-14-0-0/","summary":"\u003cp\u003eA new version of \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e (14.0.0) has been\ninstalled on all C\u0026amp;CZ managed Linux systems, older versions can still be\nfound in \u003ccode\u003e/vol/mathematica\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eWhen connected wired or wireless on campus or through \u003ca href=\"/howto/vpn/\"\u003eVPN\u003c/a\u003e,\nthe software for Windows, Linux and macOS can be found on the\n\u003ca href=\"https://install.science.ru.nl/science/Mathematica/\" target=\"_blank\"\u003eC\u0026amp;CZ Install disc\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eDuring the installation you must specify:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003e License server: mathematica.science.ru.nl\n License: L4601-6478\n\u003c/code\u003e\u003c/pre\u003e\n\u003cp\u003eAccording to the \u003ca href=\"https://www.wolfram.com/mathematica/quick-revision-history.html\" target=\"_blank\"\u003eMathematica Quick Revision\nHistory\u003c/a\u003e:\n\u0026ldquo;Version 14.0 continues to expand the scope and breadth of our computational coverage while streamlining and polishing existing areas.\u0026rdquo;\u003c/p\u003e","title":"New version of Mathematica 14.0.0"},{"content":"The free open-source mathematics software system SageMath version 9.5 has been installed on Science loginservers and JupyterHub, Digital Security and Math clusternodes.\nThe mission of SageMath is to create viable free open source alternative to Magma, Maple, Mathematica and Matlab.\nSageMath builds on top of many existing open-source packages: NumPy, SciPy, matplotlib, Sympy, Maxima, GAP, FLINT, R and many more. Access their combined power through a common, Python-based language or directly via interfaces or wrappers.\n","permalink":"https://cncz.science.ru.nl/news/2024-02-16_sagemath-on-loginservers-and-jupyterhub-digital-security-and-math-clusternodes/","summary":"\u003cp\u003eThe free open-source mathematics software system \u003ca href=\"https://www.sagemath.org/\" target=\"_blank\"\u003eSageMath\u003c/a\u003e version 9.5 has been installed on Science \u003ca href=\"https://cncz.science.ru.nl/howto/hardware-servers/#linux-login-servers\" target=\"_blank\"\u003eloginservers\u003c/a\u003e and \u003ca href=\"https://cncz.science.ru.nl/howto/jupyterhub/\" target=\"_blank\"\u003eJupyterHub\u003c/a\u003e, Digital Security and Math \u003ca href=\"https://cncz.science.ru.nl/howto/hardware-servers/#compute-serversclusters\" target=\"_blank\"\u003eclusternodes\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eThe mission of SageMath is to create viable free open source alternative to Magma, Maple, Mathematica and Matlab.\u003c/p\u003e\n\u003cp\u003eSageMath builds on top of many existing open-source packages: NumPy,\nSciPy, matplotlib, Sympy, Maxima, GAP, FLINT, R and many more. Access\ntheir combined power through a common, Python-based language or directly\nvia interfaces or wrappers.\u003c/p\u003e","title":"SageMath on loginservers and JupyterHub, Digital Security and Math clusternodes"},{"content":"We are pleased that we received 330 completed surveys. Many of these were very positive. Some contained suggestions for improvements or new services. We\u0026rsquo;ll analyze the results further in the next months.\n","permalink":"https://cncz.science.ru.nl/news/2024-01-23_large-response-survey-services-c-cz/","summary":"\u003cp\u003eWe are pleased that we received 330 completed surveys. Many of these\nwere very positive. Some contained suggestions for improvements or new\nservices. We\u0026rsquo;ll analyze the results further in the next months.\u003c/p\u003e","title":"Large response survey services provided by C\u0026CZ"},{"content":"Ceph filesystem failure.\nServices required for the CephFS filesytem cannot start. Failure of these services wil cause failure to access files on Ceph.\nWe are in contact with our support party 42on to remedy the problem. Duration is currently unknown.\nUpdate 2024-01-22 We\u0026rsquo;re working with 42on on the issue and have a meeting scheduled for 17:00 today.\nUpdate 2024-01-23 An initial dentry_recover was successful and according to 42on the Ceph journals are OK. We are hopeful that we can fix the issue with Ceph in the coming days.\nUpdate 2024-01-24 We have made some progress yesterday, but CephFS isn\u0026rsquo;t up and running yet. Today another meeting is scheduled with 42on.\nWe need to do another dentry_recover - this is a long running process, 4+ hours. After that we need another meeting with 42on to consider the next steps. Next meeting is scheduled for 15:00 tomorrow.\nUpdate 2024-01-25 CephFS is back online.\nWe need a run some maintenance processes, this will happen during the weekend.\nUpdate 2024-02-05 CephFS still not healthy, first it was slow, then an attempt to improve the speed made the problem worse.\nPossibly CephFS will be unavailable again for part of this week in order to fix it again.\nUpdate 2024-02-06 Part of the filesystem is still accessible, notably the shares using 3copy, ec54 and to a lesser extent ec83. Unfortunately the biggest user of all under ec83/rimlsfnwi seems to be completely unusable at the moment. We are working on a solution with our support partner, meanwhile we are trying to find intermediate solutions for as many users as we can. We expect CephFS to be offline again for an extended period as part of the repair process.\nUpdate 2024-02-15 We are working to copy as much data as we can from CephFS to other storage. We expect that we will down CephFS (early?) next week and start the recovery.\nUpdate 2024-02-19 It seems the problem has become worse, now everything on CephFS is unusable, so we are forced to abort efforts to save data and we have started with the repair operation.\nUpdate 2024-02-20 The recovery process is running\u0026hellip; Earlier this CPK didn\u0026rsquo;t mention the affected services, they\u0026rsquo;re added now in the metadata; cpk_affected: CephFS storage, ftp, install, RDR\nUpdate 2024-02-22 The install share is being restored in another place, the repair operation is still running.\nUpdate 2024-02-26 The repair operation continues with next steps, we think this may take a very long time (weeks?).\nUpdate 2024-02-28 We are exploring alternatives strategies for recovering the CephFS data. Tomorrow (29th) we expect guidance from 42on on how to proceed.\nUpdate 2024-03-05 The scan is still running, we expect this to take another two weeks before we can continue with the next step, which should also take about 3 weeks, then another 2 steps follow which should be faster. At this time we expect access to the CephFS within 2 months (lots of uncertainty with this estimate!).\nThere\u0026rsquo;s an alternative, high risk, strategy, where we skip the checks and try to mount the filesystem. We are reluctant to risk damaging the metadata if we try this.\nUpdate 2024-03-07 The scan_extents step finished earlier than expected and we are now running the next step (scan_inodes)\nUpdate 2024-03-08 The scan_inodes step finished already, so we have started the next step; scan_links. This step will probably take a while, because it cannot run in parallel.\nUpdate 2024-03-15 After the scan_links stopped on a problematic object without a parent, we had to wait for advice from our support party. Something seems to be very wrong in our metadata and the possibility of starting with the recovery has to be delayed further.\nUpdate 2024-03-19 Somewhat good news; we are now copying the RDR data out of CephFS. We have been able to mount CephFS again with help from 42on (our support party). Copying to temporary storage is going OK, but we can run into issues at any time (or not). We\u0026rsquo;re hopeful that this process will let us recover the data stored in CephFs and then we can look for future solutions.\nNB: contact postmaster if you have urgent requests for small sets of files in a particular location, so we may restore this with priority. A Petabyte of data takes weeks/months to copy, but a small amount (\u0026lt; 1TB) can be retrieved relatively fast.\nUpdate 2024-03-22 We are still copying the data. To clarify the situation; we are planning to copy all the data out of CephFS in order to reset CephFS completely. We are still considering options for after this reset is done.\nUpdate 2024-03-26 We have already copied well over 50% of the data out of cephfs onto temporary storage, we are expecting new storage and more space in permanent locations for the cephfs data. We have been lucky so far in that we haven\u0026rsquo;t run into issues while copying the data.\n","permalink":"https://cncz.science.ru.nl/cpk/1359/","summary":"\u003cp\u003eCeph filesystem failure.\u003c/p\u003e\n\u003cp\u003eServices required for the CephFS filesytem cannot start. Failure of\nthese services wil cause failure to access files on Ceph.\u003c/p\u003e\n\u003cp\u003eWe are in contact with our support party 42on to\nremedy the problem. Duration is currently unknown.\u003c/p\u003e\n\u003ch2 id=\"update-2024-01-22\"\u003eUpdate 2024-01-22\u003c/h2\u003e\n\u003cp\u003eWe\u0026rsquo;re working with 42on on the issue and have a meeting scheduled for 17:00 today.\u003c/p\u003e\n\u003ch2 id=\"update-2024-01-23\"\u003eUpdate 2024-01-23\u003c/h2\u003e\n\u003cp\u003eAn initial \u003ccode\u003edentry_recover\u003c/code\u003e was successful and according to 42on the Ceph journals are OK. We are\nhopeful that we can fix the issue with Ceph in the coming days.\u003c/p\u003e","title":"Ceph filesystem failure"},{"content":"A new storage option has been developed by C\u0026amp;CZ. This page will show the technical details and properties of this storage, which will hopefully help you make a decision if this is something you want. Any storage we handout we call a \u0026ldquo;volume\u0026rdquo;. For these ZFS volumes:\nSize Storage size can be as large as you want, but smaller than the amount we can put in a single machine. Currently (2024+) we can buy machines with roughly 140-200 TB storage. Snapshots On this we enable snapshots, so that you can retrieve (deleted) files your self. Backup Each volume will be back upped to local S3 storage. This should be thought of as disaster recovery, and restoring from the cloud should (hopefully) be rarely needed. All of these volumes are visible in DIY in the \u0026ldquo;Storage\u0026rdquo; section if you have access to them. How to order such storage can be seen here.\nAccess Each volume can be access via Samba and NFS from machines where you can log in.\nOn a volume we configure two groups (of your choice):\na read-write group a read-only group If you are the owner of those groups you can change who can access what by removing are adding user into those groups in DIY. In the (near) future we also want to expose volume properties to DIY, so that group owners can e.g. increase the volume size.\nUsers of the volume can (naturally) change files they own and add/remove permissions.\nOptional Features The are a bunch of knobs we turn for each of these volumes. Depending on user demand this will also find a place in DIY, for now you\u0026rsquo;ll need to contact C\u0026amp;CZ.\nSync all directories and files to the original read-write/read-only groups and remove any added groups and/or access. Temporary set the volume to read-only. Enable/disable backup. Migration of Existing Volumes There are currently no plans to migrate/consolidate exiting volumes. If your organization wants to discuss such a migration please contact C\u0026amp;CZ.\nCompression All ZFS volumes have compression on by default, this often results in significant reduction in used space and the quota is based on uncompressed size you can store more data in the size you pay for.\nTo figure out how much space your data is when not compressed, you can use the du --apparent-size command (usually du --apparent-size -sh . for a summery of the current directory) to show the total size of the data without compression.\n","permalink":"https://cncz.science.ru.nl/howto/zfs-storage/","summary":"\u003cp\u003eA new storage option has been developed by C\u0026amp;CZ. This page will show the technical details and\nproperties of this storage, which will hopefully help you make a decision if this is something you\nwant. Any storage we handout we call a \u0026ldquo;volume\u0026rdquo;. For these ZFS volumes:\u003c/p\u003e\n\u003cdl\u003e\n\u003cdt\u003eSize\u003c/dt\u003e\n\u003cdd\u003eStorage size can be as large as you want, but smaller than the amount we can put in a single machine.\nCurrently (2024+) we can buy machines with roughly 140-200 TB storage.\u003c/dd\u003e\n\u003cdt\u003eSnapshots\u003c/dt\u003e\n\u003cdd\u003eOn this we enable \u003ca href=\"../zfs-share-snapshot/\"\u003esnapshots\u003c/a\u003e, so that you can retrieve (deleted) files your self.\u003c/dd\u003e\n\u003cdt\u003eBackup\u003c/dt\u003e\n\u003cdd\u003eEach volume will be back upped to local S3 storage. This should be thought of as\ndisaster recovery, and restoring from the cloud should (hopefully) be rarely needed.\u003c/dd\u003e\n\u003c/dl\u003e\n\u003cp\u003e\u003ca href=\"https://dhz.science.ru.nl\" target=\"_blank\"\u003eAll of these volumes are visible in DIY in the \u0026ldquo;Storage\u0026rdquo; section\u003c/a\u003e if you have access to them.\n\u003ca href=\"https://cncz.science.ru.nl/nl/howto/storage/#bestellen\" target=\"_blank\"\u003eHow to order such storage can be seen here.\u003c/a\u003e\u003c/p\u003e","title":"ZFS Volumes"},{"content":"We would like to draw your attention to a short survey regarding the services provided by C\u0026amp;CZ.\nWe would really appreciate it if you would take a few minutes to provide us with feedback. Based on the results, we will determine how we can further improve our services for the faculty in the coming years.\nThank you very much in advance for your response!\nNote\nThe survey has now been closed. Thank you very much for the valuable feedback!\n","permalink":"https://cncz.science.ru.nl/news/2023-12-13_short-survey-regarding-the-services-provided-by-c-cz/","summary":"\u003cp\u003eWe would like to draw your attention to \u003ca href=\"https://u1.survey.science.ru.nl/index.php/515387?lang=en\" target=\"_blank\"\u003ea short survey regarding the services provided by C\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eWe would really appreciate it if you would take a few minutes to provide us with feedback.\nBased on the results, we will determine how we can further improve our services for the faculty in the coming years.\u003c/p\u003e\n\u003cp\u003eThank you very much in advance for your response!\u003c/p\u003e\n\u003cdiv\u003e\u003csvg width=\"0\" height=\"0\" display=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003csymbol id=\"tip-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.967-111.033 248-248 248S8 392.967 8 256 119.033 8 256 8s248 111.033 248 248zM227.314 387.314l184-184c6.248-6.248 6.248-16.379 0-22.627l-22.627-22.627c-6.248-6.249-16.379-6.249-22.628 0L216 308.118l-70.059-70.059c-6.248-6.248-16.379-6.248-22.628 0l-22.627 22.627c-6.248 6.248-6.248 16.379 0 22.627l104 104c6.249 6.249 16.379 6.249 22.628.001z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"note-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"warning-notice\" viewBox=\"0 0 576 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"info-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 110c23.196 0 42 18.804 42 42s-18.804 42-42 42-42-18.804-42-42 18.804-42 42-42zm56 254c0 6.627-5.373 12-12 12h-88c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h12v-64h-12c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h64c6.627 0 12 5.373 12 12v100h12c6.627 0 12 5.373 12 12v24z\"/\u003e\u003c/symbol\u003e\u003c/svg\u003e\u003c/div\u003e\u003cdiv class=\"notice note\" \u003e\n\u003cp class=\"first notice-title\"\u003e\u003cspan class=\"icon-notice baseline\"\u003e\u003csvg\u003e\u003cuse href=\"#note-notice\"\u003e\u003c/use\u003e\u003c/svg\u003e\u003c/span\u003eNote\u003c/p\u003e","title":"Short survey regarding the services provided by C\u0026CZ"},{"content":"To counteract email spoofing, the following changes are forthcoming, affecting the way email can be sent.\nScience SMTP authentication requirement from specific networks Currently, it is possible to send emails via SMTP without authentication when connected to the campus network. For user devices, it has always been recommended to use authenticated SMTP. Starting from January 8, 2024, C\u0026amp;CZ will no longer allow unauthenticated SMTP from user networks. The first networks for which this policy will be enforced will be Eduroam and VPN.\nSending Emails via Science SMTP no longer Allowed for @ru.nl Sender Addresses From January 8, 2024, C\u0026amp;CZ will contact employees using smtp.science.ru.nl and sending emails with a sender address ending in @ru.nl. They will be requested to modify their SMTP settings, either use their Science mail address or use the central RU mail service. The intention is to block @ru.nl sender addresses on the Science SMTP service from February 1, 2024.\n","permalink":"https://cncz.science.ru.nl/news/2023-12-12-changes-in-smtp-policy/","summary":"\u003cp\u003eTo counteract email spoofing, the following changes are forthcoming, affecting the way email can be sent.\u003c/p\u003e\n\u003ch2 id=\"science-smtp-authentication-requirement-from-specific-networks\"\u003eScience SMTP authentication requirement from specific networks\u003c/h2\u003e\n\u003cp\u003eCurrently, it is possible to send emails via SMTP \u003cem\u003ewithout\u003c/em\u003e authentication when connected to the campus network. For user devices, it has always been recommended to use \u003ca href=\"../../howto/email/#outgoing-mail\"\u003eauthenticated SMTP\u003c/a\u003e. Starting from January 8, 2024, C\u0026amp;CZ will no longer allow unauthenticated SMTP from user networks. The first networks for which this policy will be enforced will be \u003ca href=\"../../howto/netwerk-draadloos/\"\u003eEduroam\u003c/a\u003e and \u003ca href=\"../..//howto/vpn/\"\u003eVPN\u003c/a\u003e.\u003c/p\u003e","title":"Policy changes for outgoing email (SMTP)"},{"content":"On December 10, 2023 the main GitLab TLS certificate expired. A new certificate was generated, but it lacked a proper certificate chain. Browsers disregard that chain, but other GitLab components do care, which meant that the registry and the runners were unable to connect to GitLab.\nOn Monday the 11th we renewed all certificates using Let\u0026rsquo;s Encrypt. Let\u0026rsquo;s Encrypt will also auto-renew these.\n","permalink":"https://cncz.science.ru.nl/cpk/1358/","summary":"\u003cp\u003eOn December 10, 2023 the main GitLab TLS certificate expired. A new certificate was generated, but\nit lacked a proper certificate chain. Browsers disregard that chain, but other GitLab components do\ncare, which meant that the registry and the runners were unable to connect to GitLab.\u003c/p\u003e\n\u003cp\u003eOn Monday the 11th we renewed all certificates using Let\u0026rsquo;s Encrypt. Let\u0026rsquo;s Encrypt will also auto-renew these.\u003c/p\u003e","title":"GitLab TLS Issue"},{"content":"Jitsi (or actually the internal prosody service) had an old certificate, causing it to refuse startup after the normal reboot. The expired certificate was replaced and after a restart of the prosody service it works again.\n","permalink":"https://cncz.science.ru.nl/cpk/1357/","summary":"\u003cp\u003e\u003ca href=\"https://jitsivm.science.ru.nl\" target=\"_blank\"\u003eJitsi\u003c/a\u003e (or actually the internal prosody service) had an old certificate,\ncausing it to refuse startup after the normal reboot. The expired certificate\nwas replaced and after a restart of the prosody service it works again.\u003c/p\u003e","title":"jitsi videoconferencing unavailable"},{"content":"After maintenance on the central routers, our servers on the 25Gbit network couldn\u0026rsquo;t send traffic to the internet. The cause or nature of the problem appears to be in the central RU routing. By resetting the interface to our network, RU Connectivity can fix this, when it occurs again. RU Connectivity contacted their maintenance provider to investigate this problem.\nFinal solution: After a few failed attempts, it was possible to define a static route in the central routers to our networks.\n","permalink":"https://cncz.science.ru.nl/cpk/1356/","summary":"\u003cp\u003eAfter maintenance on the central routers, our servers on the 25Gbit network couldn\u0026rsquo;t send traffic to the internet. The cause or nature of the problem appears to be in the central RU routing. By resetting the interface to our network,\nRU Connectivity can fix this, when it occurs again. RU Connectivity contacted their maintenance provider to investigate this problem.\u003c/p\u003e\n\u003cp\u003eFinal solution: After a few failed attempts, it was possible to define a static route in the central routers to our networks.\u003c/p\u003e","title":"Network problems after maintenance on the RU core router"},{"content":"The license of Maple has been continued in 2024 as a 2-user license. All FNWI employees and students are allowed to use Maple. If you want to use Maple, please contact C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2023-12-01_maple-license-continued-as-2-concurrent-user-license/","summary":"\u003cp\u003eThe license of \u003ca href=\"/howto/maple/\"\u003eMaple\u003c/a\u003e has been continued in 2024 as a 2-user license.\nAll FNWI employees and students are allowed to use Maple. If you want to use Maple,\nplease contact \u003ca href=\"/howto/contact/\"\u003eC\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e","title":"Maple license continued for 2 concurrent users"},{"content":"You might have received an email that your personal or group network disk is almost full. This articles describes some tools to identify large files/directories and cleanup disk space.\nFinding large files / directories with WinDirStat (graphical, Windows) WinDirStat is a disk cleanup tool for Windows that provides a visual representation of disk space usage. It helps you to quickly identify and understand which files and folders are consuming the most space. The program offers detailed information about each file, including type, last modified date, and file path. In addition to visualization, WinDirStat includes built-in cleanup options, enabling you to directly delete or move files within the program.\nInfo\nOn C\u0026amp;CZ managed windows systems, WinDirStat is installed in S:\\windirstat tice\nFinding large files \u0026amp; directories with Ncdu (text based, Linux) Ncdu is a command-line utility for Linux that provides a simple and fast way to analyze disk usage. It presents a clear and interactive interface, allowing users to navigate through directories, view file sizes, and identify space-consuming files. Unlike graphical tools, ncdu is lightweight and operates efficiently in terminal environments, making it a practical choice for users who prefer command-line interactions.\nTo analye your home directory:\nssh lilo.science.ru.nl ~$ ncdu For a network disk, use something like:\n~$ ncdu /vol/mynetworkdisk Other useful commands, Linux Quota For quota based filesystems, use the quota command to inspect the current quota and usage. Ie:\nbram@lilo8:/home/bram$ quota -s Disk quotas for user bram (uid 8451): Filesystem space quota limit grace files quota limit grace home1.science.ru.nl:/VGsda01/bram 37244K 4750M 5000M 906 1900k 2000k Info\nFor the newer ZFS home volumes there is no (soft) quota, only a hard quota which is the size of your home directory, so if quota command gives no output, you the df command as shown below.\ndf df stands for disk free. For disk based filesystems, it reports the total size and used space. To report the statistics of the disk that holds your home directory, use:\nbram@lilo8:/home/bram$ df -h . Filesystem Size Used Avail Use% Mounted on home1.science.ru.nl:/VGsda01/bram 197G 91G 102G 48% /home/bram Info\nWhile disk space refers to the total storage capacity available on a filesystem, inodes represent the data structures that store information about files and directories. Even if there\u0026rsquo;s ample disk space, running out of inodes can occur, preventing the creation of additional files or directories. Disk reporting utilities such as df and du (discussed below) have the --inodes option to report inodes.\ndu Disk usage of files or directory trees can be determined with du. Just like df, it has a -h flag for human readable units. It converts bytes to something you can actually understand. For example, to find your the disk usage of your src directory:\n~$ du -h -s ~/src 14G\t/home/bram/src I\u0026rsquo;m also using the -s flag here to summarize the output for each argument (~/src in this case).\nFinding duplicate files: Fdupes fdupes searches the given path for duplicate files. Such files are found by comparing file sizes and MD5 signatures, followed by a byte-by-byte comparison. Fdupes has options to list or delete duplicate files. See man fdupes.\nWarning\nBe cautious with fdupes in combination with a snapshotted file system such as ZFS. Ensure that you do not include the .snapshots directory as one of the arguments.\nCache A common directory where applications store temporary files is the ~/.cache directory in you home directory. Removing files there is generally a safe action. If there are a lot of files in your cache directory, ncdu will list them.\n","permalink":"https://cncz.science.ru.nl/howto/cleanup-disk-space/","summary":"\u003cp\u003eYou might have received an email that your personal or group network disk is almost full.\nThis articles describes some tools to identify large files/directories and cleanup disk\nspace.\u003c/p\u003e\n\u003ch2 id=\"finding-large-files--directories-with-windirstat-graphical-windows\"\u003eFinding large files / directories with WinDirStat (graphical, Windows)\u003c/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" src=\"/img/2023/windirstat.png\" alt=\"windirstat screenshot\" /\u003e\n\u003c/p\u003e\n\u003cp\u003e\u003ca href=\"https://windirstat.net\" target=\"_blank\"\u003eWinDirStat\u003c/a\u003e is a disk cleanup tool for Windows that provides a\nvisual representation of disk space usage. It helps you to quickly identify and\nunderstand which files and folders are consuming the most space. The program offers\ndetailed information about each file, including type, last modified date, and file\npath. In addition to visualization, WinDirStat includes built-in cleanup options,\nenabling you to directly delete or move files within the program.\u003c/p\u003e","title":"Cleanup disk space"},{"content":"Because the old poster printer broke down, we ordered an HP Designjet Z6 44 inch postscript. The new printer is twice as fast, so the speed of service will be even better. See the poster printer page for all details.\n","permalink":"https://cncz.science.ru.nl/news/2023-11-21_new-posterprinter-twice-as-fast/","summary":"\u003cp\u003eBecause the old poster printer broke down, we ordered an HP Designjet Z6 44 inch postscript.\nThe new printer is twice as fast, so the speed of service will be even better.\nSee \u003ca href=\"https://cncz.science.ru.nl/howto/print/#posters\" target=\"_blank\"\u003ethe poster printer page\u003c/a\u003e for all details.\u003c/p\u003e","title":"New A0 poster printer, twice as fast"},{"content":"Some users were unable to login, the server had become unstable, which made a reboot necessary. Unfortunately, the jupyterhub service still needs a manual startup, which didn\u0026rsquo;t happen until 13:24 hours. The service is now working again. We are working to fix the reboot problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1355/","summary":"\u003cp\u003eSome users were unable to login, the server had become unstable, which made a reboot necessary. Unfortunately, the jupyterhub service still needs a manual startup, which didn\u0026rsquo;t happen until 13:24 hours. The service is now working again. We are working to fix the reboot problem.\u003c/p\u003e","title":"Jupyterhub restarted"},{"content":"A typo that could propagate to shutdown the DHCP server had the effect that some network devices did not get an IP address when they were switched on and that others, whose address lease expired in this period, lost their IP address and thus their access to the network..\nWe\u0026rsquo;ll improve the process to prevent a typo from bringing down the DHCP server in the future.\n","permalink":"https://cncz.science.ru.nl/cpk/1354/","summary":"\u003cp\u003eA typo that could propagate to shutdown the DHCP server had the effect that some network devices did not get an IP address\nwhen they were switched on and that others, whose address lease expired in this period, lost their IP address and thus their access to the network..\u003c/p\u003e\n\u003cp\u003eWe\u0026rsquo;ll improve the process to prevent a typo from bringing down the DHCP server in the future.\u003c/p\u003e","title":"DHCP server down due to config error"},{"content":"After a scheduled reboot of the machine running jupyterhub, jupyter failed to start properly. The service started after invoking a manual start command. The measures taken to resolve this recurring problem have not proven to be sufficient.\n","permalink":"https://cncz.science.ru.nl/cpk/1353/","summary":"\u003cp\u003eAfter a scheduled reboot of the machine running jupyterhub, jupyter failed to start properly. The service started after invoking a manual start command. The measures taken to resolve this recurring problem have not proven to be sufficient.\u003c/p\u003e","title":"Jupyterhub22 refused to start this morning"},{"content":"Project: Carbon Connects Funding Party NW Europe Link to official website: https://sites.google.com/view/c-toolbox/home\n","permalink":"https://cncz.science.ru.nl/howto/carbon-connects/","summary":"\u003ch2 id=\"project-carbon-connects\"\u003eProject: Carbon Connects\u003c/h2\u003e\n\u003ch3 id=\"funding-party-nw-europe\"\u003eFunding Party NW Europe\u003c/h3\u003e\n\u003cp\u003eLink to official website: \u003ca href=\"https://sites.google.com/view/c-toolbox/home\" target=\"_blank\"\u003ehttps://sites.google.com/view/c-toolbox/home\u003c/a\u003e\u003c/p\u003e","title":"Carbon Connects"},{"content":"The newest versions of the Intel compilers, available under the name Intel oneAPI, do no longer require a license, they are freely available. The 2023.2 version has been installed on C\u0026amp;CZ managed Ubuntu systems, clusternodes with Ubuntu 22.04 and loginservers. When these compilers are available, the module command\nmodule avail\nwill list among others “compiler/latest”. Then e.g. the Intel C (icc) and Fortran (ifort) compilers can be used after typing\nmodule add compiler/latest\n","permalink":"https://cncz.science.ru.nl/news/2023-10-27_new-intel-compilers-base-and-hpc-toolkits/","summary":"\u003cp\u003eThe newest versions of the Intel compilers, available under the name \u003ca href=\"https://www.intel.com/content/www/us/en/developer/tools/oneapi/hpc-toolkit.html\" target=\"_blank\"\u003eIntel oneAPI\u003c/a\u003e,\ndo no longer require a license, they are freely available.\nThe 2023.2 version has been installed on C\u0026amp;CZ managed Ubuntu systems, clusternodes with Ubuntu 22.04 and loginservers. When these compilers are available, the module command\u003c/p\u003e\n\u003cp\u003emodule avail\u003c/p\u003e\n\u003cp\u003ewill list among others “compiler/latest”. Then e.g. the Intel C (icc) and Fortran (ifort) compilers can be used after typing\u003c/p\u003e\n\u003cp\u003emodule add compiler/latest\u003c/p\u003e","title":"New Intel compilers (oneAPI Base and HPC Toolkits)"},{"content":"Due to a misconfiguration of the DNS in the z.science.ru.nl zone, all shares were not available during the outage.\nExtra tests are added to prevent a future occurrence.\n","permalink":"https://cncz.science.ru.nl/cpk/1352/","summary":"\u003cp\u003eDue to a misconfiguration of the DNS in the z.science.ru.nl zone, all shares were not available\nduring the outage.\u003c/p\u003e\n\u003cp\u003eExtra tests are added to prevent a future occurrence.\u003c/p\u003e","title":"DNS broken for z.science.ru.nl"},{"content":"The router for most Science services urgently needs a reboot. This has been scheduled for early morning. In the unlikely case that this reboot fails, ILS Connectivity is on campus to fix it.\n","permalink":"https://cncz.science.ru.nl/cpk/1351/","summary":"\u003cp\u003eThe router for most Science services urgently needs a reboot. This has been scheduled for early morning.\nIn the unlikely case that this reboot fails, ILS Connectivity is on campus to fix it.\u003c/p\u003e","title":"All Science services down 15 minutes Thursday Oct 19 07:00-07:15 due to router reboot"},{"content":"A new version (2023b) of OriginLabPro, software for scientific graphing and data analysis, can be found on the Install-disk. See the website of OriginLab for all info on the new version. The license server supports this new version. There is a support contract until August 2026. Departments within FNWI can request installation and license info from C\u0026amp;CZ, also for standalone use. Installation on C\u0026amp;CZ managed PCs is being planned. In case of questions contact C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2022-09-01_new-version-of-originlabpro-2023b/","summary":"\u003cp\u003eA new version (2023b) of \u003ca href=\"/howto/originlab/\"\u003eOriginLabPro\u003c/a\u003e,\nsoftware for scientific graphing and data analysis, can be found on the\n\u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e-disk. See \u003ca href=\"https://www.originlab.com/2023b\" target=\"_blank\"\u003ethe website of\nOriginLab\u003c/a\u003e for all info on the new\nversion. The license server supports this new version.\nThere is a support contract until August 2026. Departments\nwithin FNWI can request installation and license info from C\u0026amp;CZ, also\nfor standalone use. Installation on C\u0026amp;CZ managed PCs is being planned.\nIn case of questions contact \u003ca href=\"/howto/contact/\"\u003eC\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e","title":"New version of OriginLabPro (2023b)"},{"content":"In preparation of the migration to Microsoft Exchange Online Protection (MS EOP), we added another mail exchange server (mx5) to be addressed directly by MS EOP. However, having had mx4 in production for some time, we forgot to test mx5 in conjunction with our mailman server (zaaivm). This could result in a bounced mail \u0026rsquo;not accepting messages\u0026rsquo; for FNWI users (employees and students) using @ru.nl addresses.\nMeanwhile, mx5 has been made known to zaaivm thus resolving this issue.\n","permalink":"https://cncz.science.ru.nl/cpk/1350/","summary":"\u003cp\u003eIn preparation of the migration to Microsoft Exchange Online Protection (MS EOP), we added another mail exchange server (mx5) to be addressed directly by MS EOP.\nHowever, having had mx4 in production for some time, we forgot to test mx5 in conjunction with our mailman server (zaaivm).\nThis could result in a bounced mail \u0026rsquo;not accepting messages\u0026rsquo; for FNWI users (employees and students) using @ru.nl addresses.\u003c/p\u003e\n\u003cp\u003eMeanwhile, mx5 has been made known to zaaivm thus resolving this issue.\u003c/p\u003e","title":"Mailman not accepting messages"},{"content":"After a scheduled reboot of the machine running jupyterhub, jupyter failed to start properly. The service started after invoking a manual start command.\n","permalink":"https://cncz.science.ru.nl/cpk/1349/","summary":"\u003cp\u003eAfter a scheduled reboot of the machine running jupyterhub, jupyter failed to start properly. The service started after invoking a manual start command.\u003c/p\u003e","title":"Jupyterhub22 refused to start this morning"},{"content":"After an upgrade of Roundcube it was temporarily not possible to send e-mails.\nAfter a small change in the configuration file the problem was resolved.\n","permalink":"https://cncz.science.ru.nl/cpk/1348/","summary":"\u003cp\u003eAfter an upgrade of Roundcube it was temporarily not possible to send e-mails.\u003c/p\u003e\n\u003cp\u003eAfter a small change in the configuration file the problem was resolved.\u003c/p\u003e","title":"Roundcube problem"},{"content":"The latest version of Matlab, R2023b, is available. The software and license codes can be obtained through a mail to postmaster for those entitled to it. The software can also be found on the install-disc. All C\u0026amp;CZ-managed Linux machines have this version installed, the older version (/opt/matlab-R2023a/bin/matlab) will be available temporarily. The C\u0026amp;CZ-managed Windows machines will not receive a new version during the semester to prevent problems with version dependencies in current lectures.\n","permalink":"https://cncz.science.ru.nl/news/2023-09-21_matlab-r2023b-available/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/matlab/\"\u003eMatlab\u003c/a\u003e, R2023b, is available.\nThe software and license codes can\nbe obtained through a mail to postmaster for those entitled to it. The\nsoftware can also be found on the \u003ca href=\"/tags/software\"\u003einstall\u003c/a\u003e-disc. All\nC\u0026amp;CZ-managed Linux machines have this version installed, the older\nversion (/opt/matlab-R2023a/bin/matlab) will be available temporarily.\nThe C\u0026amp;CZ-managed Windows machines will not receive a new version during\nthe semester to prevent problems with version dependencies in current\nlectures.\u003c/p\u003e","title":"Matlab R2023b available"},{"content":"The poster printer kamerbreed was broken. It couldn\u0026rsquo;t be fixed, so we ordered a new HP Designjet Z6 44 inch postscript. The ordering and delivery took way too long, the new poster printer was in operation on November 13. The new printer is twice as fast, so the speed of service will be even better.\nWhen our poster printer breaks down, users that need posters can go to Radboud Post\u0026amp;Print.\n","permalink":"https://cncz.science.ru.nl/cpk/1347/","summary":"\u003cp\u003eThe poster printer kamerbreed was broken. It couldn\u0026rsquo;t be fixed, so we ordered a new HP Designjet Z6 44 inch postscript. The ordering and delivery took way too long, the new\nposter printer was in operation on November 13. The new printer is twice as fast, so the speed of service will be even better.\u003c/p\u003e\n\u003cp\u003eWhen our poster printer breaks down, users that need posters can go to \u003ca href=\"https://www.ru.nl/en/services/services-and-facilities/shops/post-print\" target=\"_blank\"\u003eRadboud Post\u0026amp;Print\u003c/a\u003e.\u003c/p\u003e","title":"Poster printer kamerbreed broken"},{"content":"For an unknown reason, the Jupiter and Chemotion servers didn\u0026rsquo;t start. We are currently looking at how we can start the machine again.\nThe virtual machines have been rebuild, based on their existing disks.\n","permalink":"https://cncz.science.ru.nl/cpk/1346/","summary":"\u003cp\u003eFor an unknown reason, the Jupiter and Chemotion servers didn\u0026rsquo;t start. We are currently looking at how we can start the machine again.\u003c/p\u003e\n\u003cp\u003eThe virtual machines have been rebuild, based on their existing disks.\u003c/p\u003e","title":"Jupyter and Chemotion offline"},{"content":"Ceph filesystem storage is experiencing reduced performance, because one of the storage nodes is currently offline. A combination of factors causes this to affect performance, fullness, uneven distribution of data over the storage nodes. We expect this to be resolved when the node is back in the cluster.\nupdate 7 Oct 2023 The cluster is mostly complete again for a while already, but there\u0026rsquo;s a lot of remaining issues to be resolved by the cluster. Performance may or may not be affected\u0026hellip;\n","permalink":"https://cncz.science.ru.nl/cpk/1345/","summary":"\u003cp\u003eCeph filesystem storage is experiencing reduced performance, because one of the\nstorage nodes is currently offline. A combination of factors causes this to\naffect performance, fullness, uneven distribution of data over the storage\nnodes. We expect this to be resolved when the node is back in the cluster.\u003c/p\u003e\n\u003ch3 id=\"update-7-oct-2023\"\u003eupdate 7 Oct 2023\u003c/h3\u003e\n\u003cp\u003eThe cluster is mostly complete again for a while already, but there\u0026rsquo;s a lot of\nremaining issues to be resolved by the cluster. Performance may or may not be\naffected\u0026hellip;\u003c/p\u003e","title":"Ceph performance degraded due to broken storage node"},{"content":"On October 2, the newest login server lilo8, that runs the same version of Ubuntu as the pcs in the computer labs, Ubuntu 22.04, will become the default lilo.science.ru.nl loginserver. Lilo7, with Ubuntu 20.04, will then get tha alias \u0026lsquo;stitch\u0026rsquo; for the alternate loginserver.\nTo prevent warning messages about changed fingerprints, read the page about servers and/or the SSH info page.\n","permalink":"https://cncz.science.ru.nl/news/2023-09-17_lilo-and-stitch-swapped-lilo8-becomes-lilo/","summary":"\u003cp\u003eOn October 2, the newest login server lilo8, that runs the same version of Ubuntu as the\npcs in the computer labs, Ubuntu 22.04, will become the default lilo.science.ru.nl loginserver.\nLilo7, with Ubuntu 20.04, will then get tha alias \u0026lsquo;stitch\u0026rsquo; for the alternate loginserver.\u003c/p\u003e\n\u003cp\u003eTo prevent warning messages about changed fingerprints, read\n\u003ca href=\"/howto/hardware-servers/\"\u003ethe page about servers\u003c/a\u003e and/or \u003ca href=\"/howto/ssh/\"\u003ethe SSH info page\u003c/a\u003e.\u003c/p\u003e","title":"Lilo and stitch will be swapped October 2. Lilo8 becomes lilo"},{"content":"The RU contract with the anti-SPAM/anti-phishing service Proofpoint expired September 21, 2023, which means that \u0026lsquo;Proofpoint End User Digest\u0026rsquo; mails are not sent anymore after that date.\nC\u0026amp;CZ is migrating Science mailboxes to the anti-SPAM/anti-phishing service of Microsoft Exchange Online Protection. There is an increased chance of receiving SPAM/phishing mails in the Science mailbox during this migration period.\nP.S. the RU central mailboxes (with addresses ending in @ru.nl) have already been migrated to Microsoft Exchange Online Protection.\nUpdate 1: Microsoft support has been asked to evaluate the FNWI filter rules, after initially discouraging results.\nUpdate 2: the FNWI filter rule set was fixed, thus decreasing the number of quarantined mails being forwarded from @ru.nl addresses.\nUpdate 3: mails for the domain @student.science.ru.nl are used to train the Exchange Online Protection AI.\nUpdate 4: Christmas usually is a phishing season, which means that we\u0026rsquo;ll have migrated all FNWI mail domains at the end of December.\nUpdate 5: Microsoft Exchange Online uses about 500.000 servers which may not end up in (our/remote) blocklists which has been fixed after servers had been blocked.\nUpdate 6: the current situation is frozen for now, where only a few domains are using Microsoft Exchange Online Protection.\n","permalink":"https://cncz.science.ru.nl/cpk/1344/","summary":"\u003cp\u003eThe RU contract with the anti-SPAM/anti-phishing service Proofpoint expired September 21, 2023, which means that \u0026lsquo;Proofpoint End User Digest\u0026rsquo; mails are not sent anymore after that date.\u003c/p\u003e\n\u003cp\u003eC\u0026amp;CZ is \u003ca href=\"https://www.ru.nl/en/about-us/news/email-inbox-phishing-filter-to-change-as-from-25-july\" target=\"_blank\"\u003emigrating\u003c/a\u003e Science mailboxes to the anti-SPAM/anti-phishing service of Microsoft Exchange Online Protection.\nThere is an increased chance of receiving SPAM/phishing mails in the Science mailbox during this migration period.\u003c/p\u003e\n\u003cp\u003eP.S. the RU central mailboxes (with addresses ending in @ru.nl) have already been migrated to Microsoft Exchange Online Protection.\u003c/p\u003e","title":"Increased chance of SPAM/phishing mails in Science mailbox"},{"content":"In accordance with new RU policy, from November 1, Science login accounts will be disabled automatically when the end date is reached. From that moment it is not possible to use that account for C\u0026amp;CZ services.\nOne month before the end date, the responsible contact person will be notified. If the end date is only two weeks ahead, the account holder will be notified. One month after the end date, the account will be removed from C\u0026amp;CZ managed services like the Science mailservice and homedirectory. It is advisable for contact persons to take a more pro-active approach to maintaining the end-dates of the accounts they are responsible for, to prevent accidental disabling of accounts. Continuation of an account can also be a security risk, so end-dates should not be extended unreasonably long.\n","permalink":"https://cncz.science.ru.nl/news/2023-09-14_science-logins-automatically-disabled-when-end-date-reached/","summary":"\u003cp\u003eIn accordance with new RU policy, from November 1, Science login accounts will be disabled automatically when the end date is reached.\nFrom that moment it is not possible to use that account for C\u0026amp;CZ services.\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne month \u003cstrong\u003ebefore\u003c/strong\u003e the end date, the responsible contact person will be notified.\u003c/li\u003e\n\u003cli\u003eIf the end date is only \u003cstrong\u003etwo weeks\u003c/strong\u003e ahead, the account holder will be notified.\u003c/li\u003e\n\u003cli\u003eOne month \u003cstrong\u003eafter\u003c/strong\u003e the end date, the account will be removed from C\u0026amp;CZ managed services like the Science mailservice and homedirectory.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eIt is advisable for contact persons to take a more pro-active approach to maintaining the end-dates of the accounts they are responsible for, to prevent accidental disabling of accounts.\nContinuation of an account can also be a security risk, so end-dates should not be extended unreasonably long.\u003c/p\u003e","title":"Science login accounts automatically disabled when end date reached"},{"content":"Your personal quota only determine the amount of disk space your own data may occupy and the number of files and folders you may have on your Windows U:\\ disk or Linux home directory. Quotas may be active on other disks as well, however not all disks have quotas. The mail servers also use quotas to limit the disk space of each user’s mailbox.\nWindows On Windows desktops where the home directory is available as U: or H: disk right click on the disk, then choose Properties to view the amounts of used and available personal disk space in kbytes.\nFor a graphical view of your disk usage you can use WinDirStat. On managed systems this utility is installed at S:\\windirstat .\nLinux On Linux systems use one the following two commands to view the personal quota and current usage:\nquota\nThe output will show lines like:\nDisk quotas for user login (uid 1000): Filesystem blocks quota limit grace files quota limit grace homeX.science.ru.nl:/disk/login 4899120* 4864000 5120000 7days 2880 1900000 2000000 blocks : The amount of disk space in kKB (kilobytes) currently in use.\nquota : The maximum amount of disk space available for you.\nOn Linux systems you may exceed your quota temporarily (up to 7 days). For Windows however this is an absolute maximum. limit : The absolute maximum amount of disk space you can occupy (see above).\ntimeleft : The time left to get below your quota.\nIf you wait too long (i.e. if timeleft shows EXPIRED), you cannot write files (new or old) until you’ve cleaned up to get under quota again. There is a risk of losing data if you try to write when the quota grace period has been exceeded. files : The number of files currently owned by you.\nquota : The maximum number of files and folders you can have.\nOn Linux systems you may exceed your file quota temporarily (upto 7 days). Again for Windows this is an absolute maximum. limit : The absolute maximum number of files and folders you can have.\ntimeleft : The time left to get below your file quota.\nIf you wait too long (i.e. if timeleft shows EXPIRED) you cannot create files anymore until you’ve cleaned up to get under quota again. df If quota gives no output, you have a homedirectory on ZFS. The ZFS filesystem doesn\u0026rsquo;t have a softquota, nor a timeleft concept. To see the size of your homedirectory use df, the output will look like:\ndf -h ~ Filesystem Size Used Avail Use% Mounted on f6ea112e23d448e498d4374805f60174.home.science.ru.nl:/export/mylogin 5.0G 3.6G 1.5G 71% /home/mylogin How to determine what your disk space is used for On a Linux login server go to your home directory\ncd\npwd\nThe pwd command will show something like /home/mylogin.\nNow type the following command:\ndu -sh * .??* | sort -h\nThis will produce a list of the files and folders in your home directory, each preceeded by its size in MB (megabytes), sorted by size.\nAnother command to sum up disk usage is\nncdu ~\nFrequent culprits for eating your quota In general it is caching, this is semi-useless, because caching is meant to be done on local storage, not your network homedirectory.\nPython PIP In general look here for pip cache commands. TLDR: use pip cache purge to clean up.\nFirefox From the commandline use this command to clean the firefox cache: rm -rf ~/.cache/mozilla/firefox/*. Then restart firefox.\nTo reduce the amount of cache size used by firefox, go the the about:config settings (via the address bar) and search for browser.cache.disk.capacity and you may want to look at other browser.cache.disk.* settings as well.\nAnaconda Mail The Roundcube webmail service offers a convenient way to view your mail quota and current use. The lower left corner shows the percentage of quota in us. Next to that, clicking Folder options, lists all folders. Clicking on a folder gives the option to Click to get the folder size.\n","permalink":"https://cncz.science.ru.nl/howto/quota/","summary":"\u003cp\u003eYour personal quota only determine the amount of disk space your own\ndata may occupy and the number of files and folders you may have on your\nWindows \u003ccode\u003eU:\\\u003c/code\u003e disk or Linux home directory. Quotas may be active on other\ndisks as well, however not all disks have quotas. The mail servers also use\nquotas to limit the disk space of each user’s mailbox.\u003c/p\u003e\n\u003ch2 id=\"windows\"\u003eWindows\u003c/h2\u003e\n\u003cp\u003eOn Windows desktops where the home directory is available as U: or H:\ndisk right click on the disk, then choose \u003ccode\u003eProperties\u003c/code\u003e to view the\namounts of used and available personal disk space in kbytes.\u003c/p\u003e","title":"Disk quota"},{"content":"The Science newsletter is sent from an @ru.nl mail-account. Recently, the @ru.nl mailservice was changed by adding Exchange Online Protection (EOP). EOP is the successor for Radboud University to the Proofpoint e-mail security filter. EOP added a mail header line to the newsletter\nList-Unsubscribe: https://c8ce19ec62454d21b73b7d5a25559d8f.svc.dynamics.com/t/lu/7...\nwhich made the mail appear to be spam to the Science spamfilter SpamAssassin.\n1.1 URI_HEX URI: URI hostname has long hexadecimal sequence\nWhen we noticed this, we fixed it by welcome listing (allowlisting/passlisting) the sender address communications-science@ru.nl on September 7, so this mail will never be falsely classified as spam. The Radboud Weekly newsletter had the same problem, so communicatie@ru.nl was also put on the welcome list on September 14.\n","permalink":"https://cncz.science.ru.nl/cpk/1343/","summary":"\u003cp\u003eThe Science newsletter is sent from an @ru.nl mail-account. Recently, the @ru.nl mailservice was\nchanged by adding \u003ca href=\"https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/eop-about?view=o365-worldwide\" target=\"_blank\"\u003eExchange Online Protection (EOP)\u003c/a\u003e.\nEOP is the successor for Radboud University to the \u003ca href=\"https://www.proofpoint.com/us\" target=\"_blank\"\u003eProofpoint e-mail security filter\u003c/a\u003e.\nEOP added a mail header line to the newsletter\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eList-Unsubscribe: https://c8ce19ec62454d21b73b7d5a25559d8f.svc.dynamics.com/t/lu/7...\u003c/code\u003e\u003c/p\u003e\n\u003cp\u003ewhich made the mail appear to be spam to the Science spamfilter SpamAssassin.\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003e1.1 URI_HEX URI: URI hostname has long hexadecimal sequence\u003c/code\u003e\u003c/p\u003e\n\u003cp\u003eWhen we noticed this, we fixed it by welcome listing (allowlisting/passlisting) the sender address \u003ca href=\"mailto:communications-science@ru.nl\"\u003ecommunications-science@ru.nl\u003c/a\u003e on September 7,\nso this mail will never be falsely classified as spam.\nThe Radboud Weekly newsletter had the same problem, so \u003ca href=\"mailto:communicatie@ru.nl\"\u003ecommunicatie@ru.nl\u003c/a\u003e was also put on the welcome list on September 14.\u003c/p\u003e","title":"Science and Radboud Newsletter in Spam"},{"content":"After the Monday morning reboot, the NFS server on home1 refused to start properly. We are investigating why a manual restart of nfs was needed.\n","permalink":"https://cncz.science.ru.nl/cpk/1342/","summary":"\u003cp\u003eAfter the Monday morning reboot, the NFS server on home1 refused to start properly. We are investigating why a manual restart of nfs was needed.\u003c/p\u003e","title":"Some home directories not available"},{"content":"On C\u0026amp;CZ managed Ubuntu hosts, the \u0026ldquo;module\u0026rdquo; command is available. This makes it easy to use specific versions of available software.\nTo view which modules are available, use:\nmodule avail and to use Matlab-R2023a:\nmodule add Matlab-R2023a` For more info, see the Environment Modules website.\n","permalink":"https://cncz.science.ru.nl/howto/module-command-for-optional-software-versions/","summary":"\u003cp\u003eOn C\u0026amp;CZ managed Ubuntu hosts, the \u0026ldquo;module\u0026rdquo; command is available. This makes it easy to use specific versions of available software.\u003c/p\u003e\n\u003cp\u003eTo view which modules are available, use:\u003c/p\u003e\n\u003cdiv class=\"highlight\"\u003e\u003cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;\"\u003e\u003ccode class=\"language-sh\" data-lang=\"sh\"\u003e\u003cspan style=\"display:flex;\"\u003e\u003cspan\u003emodule avail\n\u003c/span\u003e\u003c/span\u003e\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\u003cp\u003eand to use Matlab-R2023a:\u003c/p\u003e\n\u003cdiv class=\"highlight\"\u003e\u003cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;\"\u003e\u003ccode class=\"language-sh\" data-lang=\"sh\"\u003e\u003cspan style=\"display:flex;\"\u003e\u003cspan\u003emodule add Matlab-R2023a\u003cspan style=\"color:#e6db74\"\u003e`\u003c/span\u003e\n\u003c/span\u003e\u003c/span\u003e\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\u003cp\u003eFor more info, see \u003ca href=\"https://modules.readthedocs.io/en/v5.3.1/module.html\" target=\"_blank\"\u003ethe Environment Modules website\u003c/a\u003e.\u003c/p\u003e","title":"Module command for optional software versions"},{"content":"A new version of Mathematica (13.3.1) has been installed on all C\u0026amp;CZ managed Linux systems, older versions can still be found in /vol/mathematica.\nWhen connected wired or wireless on campus or through VPN, the software for Windows, Linux and macOS can be found on the C\u0026amp;CZ Install disc.\nDuring the installation you must specify:\nLicense server: mathematica.science.ru.nl License: L4601-6478 According to the Mathematica Quick Revision History: \u0026ldquo;Version 13.3.1 includes multiple critical bug fixes and improvements to Chat-Enabled Notebook stability and usability.\u0026rdquo;\n","permalink":"https://cncz.science.ru.nl/news/2023-08-24_new-version-of-mathematica-13-3-1/","summary":"\u003cp\u003eA new version of \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e (13.3.1) has been\ninstalled on all C\u0026amp;CZ managed Linux systems, older versions can still be\nfound in \u003ccode\u003e/vol/mathematica\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eWhen connected wired or wireless on campus or through \u003ca href=\"/howto/vpn/\"\u003eVPN\u003c/a\u003e,\nthe software for Windows, Linux and macOS can be found on the\n\u003ca href=\"https://install.science.ru.nl/science/Mathematica/\" target=\"_blank\"\u003eC\u0026amp;CZ Install disc\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eDuring the installation you must specify:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003e License server: mathematica.science.ru.nl\n License: L4601-6478\n\u003c/code\u003e\u003c/pre\u003e\n\u003cp\u003eAccording to the \u003ca href=\"https://www.wolfram.com/mathematica/quick-revision-history.html\" target=\"_blank\"\u003eMathematica Quick Revision\nHistory\u003c/a\u003e:\n\u0026ldquo;Version 13.3.1 includes multiple critical bug fixes and improvements to Chat-Enabled Notebook stability and usability.\u0026rdquo;\u003c/p\u003e","title":"New version of Mathematica (13.3.1)"},{"content":"RU mail management let us know that yesterday the forwarding to external (non-RU) mail addresses has been stopped as announced earlier. Unfortunately, mail for several dozens of Science users was/is not forwarded to the Science mailservers. These mails can still be found in MS365 (RU mail), either in the Inbox or in the Deleted Items. RU mail management promised that the forwarding will be corrected tomorrow.\n","permalink":"https://cncz.science.ru.nl/cpk/1341/","summary":"\u003cp\u003eRU mail management let us know that yesterday the forwarding to\nexternal (non-RU) mail addresses has been stopped as announced earlier.\nUnfortunately, mail for several dozens of Science users was/is not forwarded\nto the Science mailservers.\nThese mails can still be found in MS365 (RU mail), either in the Inbox\nor in the Deleted Items.\nRU mail management promised that the forwarding will be corrected\ntomorrow.\u003c/p\u003e","title":"Missed RU mail due to stopped external forwarding"},{"content":"RU mail management let us know that yesterday the forwarding to external (non-RU) mail addresses has been stopped as announced earlier. Unfortunately, mail for several dozens of Science users was/is not forwarded to the Science mailservers. These mails can still be found in MS365 (RU mail), either in the Inbox or in the Deleted Items. RU mail management promised that the forwarding will be corrected tomorrow.\nAutomatic forwarding from Science mail by employees and students to external addresses has been stopped on August 22.\nAlso see cpk/1341.\n","permalink":"https://cncz.science.ru.nl/news/2023-08-22_missed-ru-mail-due-to-stopped-external-forwarding/","summary":"\u003cp\u003eRU mail management let us know that yesterday the forwarding to external (non-RU) mail addresses has been stopped as announced earlier. Unfortunately, mail for several dozens of Science users was/is not forwarded to the Science mailservers. These mails can still be found in MS365 (RU mail), either in the Inbox or in the Deleted Items. RU mail management promised that the forwarding will be corrected tomorrow.\u003c/p\u003e\n\u003cp\u003eAutomatic forwarding from Science mail by employees and students to\nexternal addresses has been stopped on August 22.\u003c/p\u003e","title":"Missed RU mail due to stopped external forwarding"},{"content":"Announcement of maintenance, Wednesday afternoon we are going to replace the cpu of one of our main vmhost servers, meaning vms\ngitlab9 (pep) slurm22 pep3 jitsivm poliep indicoimapp2vm pep4 mariavm01 smtp2\nwill be down for up to 1 hour. several services depend on the mariavm01 (websites, slurm), so they will be affected too.\n","permalink":"https://cncz.science.ru.nl/cpk/1340/","summary":"\u003cp\u003eAnnouncement of maintenance, Wednesday afternoon we are going to replace the cpu of\none of our main vmhost servers, meaning vms\u003c/p\u003e\n\u003cp\u003egitlab9 (pep)\nslurm22\npep3\njitsivm\npoliep\nindicoimapp2vm\npep4\nmariavm01\nsmtp2\u003c/p\u003e\n\u003cp\u003ewill be down for up to 1 hour. several services depend on the mariavm01\n(websites, slurm), so they will be affected too.\u003c/p\u003e","title":"cpu replacement vmhost06"},{"content":"Apologies for the short notice, we are now going to replace the motherboard of one of our main vmhost servers, meaning vms\ngitlab9 (pep) slurm22 pep3 jitsivm poliep indicoimapp2vm pep4 mariavm01 smtp2\nwill be down for up to 1 hour. several services depend on the mariavm01 (websites, slurm), so they are affected too.\n","permalink":"https://cncz.science.ru.nl/cpk/1339/","summary":"\u003cp\u003eApologies for the short notice, we are now going to replace the motherboard of\none of our main vmhost servers, meaning vms\u003c/p\u003e\n\u003cp\u003egitlab9 (pep)\nslurm22\npep3\njitsivm\npoliep\nindicoimapp2vm\npep4\nmariavm01\nsmtp2\u003c/p\u003e\n\u003cp\u003ewill be down for up to 1 hour. several services depend on the mariavm01\n(websites, slurm), so they are affected too.\u003c/p\u003e","title":"motherboard replacement vmhost06"},{"content":"Our daily backup system relies on cephfs storage, which is currently offline, see CPK#1337.\nThis means that as of July 22nd we are unable to perform or restore daily backups. When the cephfs problems are resolved the daily backups should also be OK and restorable again.\nNB, this has no effect on the Monthly backups, which continue to work normally.\n","permalink":"https://cncz.science.ru.nl/cpk/1338/","summary":"\u003cp\u003eOur daily backup system relies on cephfs storage, which is currently offline, see \u003ca href=\"https://cncz.science.ru.nl/cpk/1337/\" target=\"_blank\"\u003eCPK#1337\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eThis means that as of July 22nd we are unable to perform or restore \u003cem\u003edaily\u003c/em\u003e backups. When the cephfs problems are resolved the daily backups should also be OK and restorable again.\u003c/p\u003e\n\u003cp\u003eNB, this has no effect on the \u003cem\u003eMonthly\u003c/em\u003e backups, which continue to work normally.\u003c/p\u003e","title":"Daily backups offline"},{"content":"After the power down of the Huygens building we are experiencing a problem with bringing Ceph file system back online.\nWe currently do not know when the Ceph cluster is operational again.\nUpdate 2023-08-01 10:30 Ceph is working again. This CPK is now closed. CPK#1338 is also closed.\nUpdate 2023-07-31 12:30 After some more support from 42on, we managed to restart the cephfs, we cannot be sure all files are there, but almost all files are. Please let us know if you are missing crucial data, in theory we can find and restore the data, though we have to process 500 million entries to find it, which will take a long time.\nThings are looking good, but the Ceph mounts will not work yet. Later today we\u0026rsquo;ll issue an all clear and close this CPK.\nUpdate 2023-07-27 14:00 We are replaying the journal. This process doesn\u0026rsquo;t report progress, so it\u0026rsquo;s hard for us to estimate how long this will actually take. After this is done, we will need to figure out the next steps.\nUpdate 2023-07-26 14:20 We are still working to resolve the problem. Also note that our Daily backups are affected by this, so as of Saturday July 22nd, we have no daily backups of systems and we cannot restore from daily backups before the 22nd.\nUpdate 2023-07-24 14:35 We have called in Ceph support (42on.com) to help us debug. We aim to have Ceph up and running in the next few days.\nUpdate 2023-07-24 8:05 The filesystem is not OK yet.\nUpdate 2023-07-23 10:45 After performing a ceph file system scrub the cluster is online.\n","permalink":"https://cncz.science.ru.nl/cpk/1337/","summary":"\u003cp\u003eAfter the \u003ca href=\"https://cncz.science.ru.nl/cpk/1333/\" target=\"_blank\"\u003epower down\u003c/a\u003e of the Huygens building\nwe are experiencing a problem with bringing Ceph file system back online.\u003c/p\u003e\n\u003cp\u003eWe currently do not know when the Ceph cluster is operational again.\u003c/p\u003e\n\u003ch2 id=\"update-2023-08-01-1030\"\u003eUpdate 2023-08-01 10:30\u003c/h2\u003e\n\u003cp\u003eCeph is working again. This CPK is now closed.\n\u003ca href=\"https://cncz.science.ru.nl/cpk/1338/\" target=\"_blank\"\u003eCPK#1338\u003c/a\u003e is also closed.\u003c/p\u003e\n\u003ch2 id=\"update-2023-07-31-1230\"\u003eUpdate 2023-07-31 12:30\u003c/h2\u003e\n\u003cp\u003eAfter some more support from 42on, we managed to restart the cephfs, we cannot\nbe sure all files are there, but almost all files are. Please let us know if\nyou are missing crucial data, in theory we can find and restore the data,\nthough we have to process 500 million entries to find it, which will take a\nlong time.\u003c/p\u003e","title":"Cephfs offline"},{"content":"The 3D printservice has been upgraded with the addition of a Prusa MK4.\n","permalink":"https://cncz.science.ru.nl/news/2023-07-11_new-3d-printer-prusa-mk4-faster-and-more-precise/","summary":"\u003cp\u003eThe \u003ca href=\"https://cncz.science.ru.nl/howto/print/#3d-printen\" target=\"_blank\"\u003e3D printservice\u003c/a\u003e has been upgraded with the addition of a \u003ca href=\"https://www.prusa3d.com/product/original-prusa-mk4-2/\" target=\"_blank\"\u003ePrusa MK4\u003c/a\u003e.\u003c/p\u003e","title":"New 3D printer Prusa MK4 - faster and more precise"},{"content":"Network shares with ZFS as file system have the ability (which C\u0026amp;CZ switches on by default) to make snapshots.\nA snapshot is a read-only copy of the share, made at a specific point in time. Such snapshots allow you to find previous versions of your files. On most shares, snapshots go back 45 days. After that period they are removed.\nTip\nIf you remove a file, you still have the ability to retrieve - up to 45 days - different versions. After that time period the file is really gone from the share.\nA snapshot is not an alternative folder to store your data.\nIn the sections below you can read how to access ZFS snapshots in Linux and Windows.\nLinux In your share (or home directory) you\u0026rsquo;ll see a .zfs with a snapshot directory. Listing those contents:\n# ls -l .zfs/snapshot/ total 22 drwxr-xr-x 2 root root 4 Apr 17 12:59 cncz_20230630_043047_000 drwxr-xr-x 2 root root 4 Apr 17 12:59 cncz_20230630_203047_000 drwxr-xr-x 2 root root 4 Apr 17 12:59 cncz_20230701_043046_000 drwxr-xr-x 2 root root 4 Apr 17 12:59 cncz_20230701_163047_000 Each directory here has a prefix \u0026lsquo;cncz_\u0026rsquo; and then the date and time of when the snapshot was made. Within each of these directories you find a copy of your share as it was at the date and time.\nWindows When right clicking on a folder and then selecting \u0026ldquo;Properties\u0026rdquo;, you\u0026rsquo;ll see the following:\nThen click on the tab \u0026ldquo;Previous Versions\u0026rdquo; and it shows an overview of the (snapshots) version of the folder:\nYou can then browse the older versions or restore them.\n","permalink":"https://cncz.science.ru.nl/howto/zfs-share-snapshot/","summary":"\u003cp\u003eNetwork shares with \u003ca href=\"https://openzfs.org/wiki/Main_Page\" target=\"_blank\"\u003eZFS\u003c/a\u003e as file system have the ability (which\nC\u0026amp;CZ switches on by default) to make \u003cem\u003esnapshots\u003c/em\u003e.\u003c/p\u003e\n\u003cp\u003eA \u003cem\u003esnapshot\u003c/em\u003e is a read-only copy of the share, made at a specific point in time. Such\nsnapshots allow you to find previous versions of your files. On most shares, snapshots go back\n45 days. After that period they are removed.\u003c/p\u003e\n\u003cdiv\u003e\u003csvg width=\"0\" height=\"0\" display=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003csymbol id=\"tip-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.967-111.033 248-248 248S8 392.967 8 256 119.033 8 256 8s248 111.033 248 248zM227.314 387.314l184-184c6.248-6.248 6.248-16.379 0-22.627l-22.627-22.627c-6.248-6.249-16.379-6.249-22.628 0L216 308.118l-70.059-70.059c-6.248-6.248-16.379-6.248-22.628 0l-22.627 22.627c-6.248 6.248-6.248 16.379 0 22.627l104 104c6.249 6.249 16.379 6.249 22.628.001z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"note-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"warning-notice\" viewBox=\"0 0 576 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"info-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 110c23.196 0 42 18.804 42 42s-18.804 42-42 42-42-18.804-42-42 18.804-42 42-42zm56 254c0 6.627-5.373 12-12 12h-88c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h12v-64h-12c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h64c6.627 0 12 5.373 12 12v100h12c6.627 0 12 5.373 12 12v24z\"/\u003e\u003c/symbol\u003e\u003c/svg\u003e\u003c/div\u003e\u003cdiv class=\"notice tip\" \u003e\n\u003cp class=\"first notice-title\"\u003e\u003cspan class=\"icon-notice baseline\"\u003e\u003csvg\u003e\u003cuse href=\"#tip-notice\"\u003e\u003c/use\u003e\u003c/svg\u003e\u003c/span\u003eTip\u003c/p\u003e","title":"Snapshots with ZFS"},{"content":"The VPNsec service will be moved to a new server. This move will cause downtime and existing VPN connections will be destroyed. Downtime is expected not to exceed several minutes.\n","permalink":"https://cncz.science.ru.nl/cpk/1336/","summary":"\u003cp\u003eThe \u003ca href=\"../../howto/vpn\"\u003eVPNsec service\u003c/a\u003e will be moved to a new server.\nThis move will cause downtime and existing VPN connections will be destroyed.\nDowntime is expected not to exceed several minutes.\u003c/p\u003e","title":"VPN service downtime"},{"content":"Last friday, a change in the mailman configuration has been rolled out which had the inadvertent effect that mails were not delivered to external addresses anymore. However, these mailman posts were sent successfully to internal Science mail addresses.\nThe change has been rolled back for the moment but is a necessity meaning that we\u0026rsquo;re looking for another solution.\n","permalink":"https://cncz.science.ru.nl/cpk/1335/","summary":"\u003cp\u003eLast friday, a change in the mailman configuration has been rolled out which had the inadvertent effect that mails were not delivered to external addresses anymore. However, these mailman posts were sent successfully to internal Science mail addresses.\u003c/p\u003e\n\u003cp\u003eThe change has been rolled back for the moment but is a necessity meaning that we\u0026rsquo;re looking for another solution.\u003c/p\u003e","title":"Mailman disruption"},{"content":"A new version of Mathematica (13.3.0) has been installed on all C\u0026amp;CZ managed Linux systems, older versions can still be found in /vol/mathematica.\nWhen connected wired or wireless on campus or through VPN, the software for Windows, Linux and macOS can be found on the C\u0026amp;CZ Install disc.\nDuring the installation you must specify:\nLicense server: mathematica.science.ru.nl License: L4601-6478 According to the Mathematica Quick Revision History: \u0026ldquo;Version 13.3 introduces new functions that utilize large language models, as well as expands functionality for machine learning, mathematical computations, foreign function interface and more.\u0026rdquo;\n","permalink":"https://cncz.science.ru.nl/news/2023-06-30_new-version-of-mathematica-13-3-0/","summary":"\u003cp\u003eA new version of \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e (13.3.0) has been\ninstalled on all C\u0026amp;CZ managed Linux systems, older versions can still be\nfound in \u003ccode\u003e/vol/mathematica\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eWhen connected wired or wireless on campus or through \u003ca href=\"/howto/vpn/\"\u003eVPN\u003c/a\u003e,\nthe software for Windows, Linux and macOS can be found on the\n\u003ca href=\"https://install.science.ru.nl/science/Mathematica/\" target=\"_blank\"\u003eC\u0026amp;CZ Install disc\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eDuring the installation you must specify:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003e License server: mathematica.science.ru.nl\n License: L4601-6478\n\u003c/code\u003e\u003c/pre\u003e\n\u003cp\u003eAccording to the \u003ca href=\"https://www.wolfram.com/mathematica/quick-revision-history.html\" target=\"_blank\"\u003eMathematica Quick Revision\nHistory\u003c/a\u003e:\n\u0026ldquo;Version 13.3 introduces new functions that utilize large language models, as well as expands functionality for machine learning, mathematical computations, foreign function interface and more.\u0026rdquo;\u003c/p\u003e","title":"New version of Mathematica (13.3.0)"},{"content":"The connecting router (dr-huyg) for all servers in the subnets 131.174.30.0/24, 131.174.31.0/24 and 131.174.16.128/26 will be replaced.\nIt is expected that this will cause an interruption of ca. 10 minutes in the connectivity, but unforeseen circumstances may increase this delay.\nThe reason to do this now is because of the planned power interruption on July 22. The old router hardware has a high probability of failing to survive this.\n","permalink":"https://cncz.science.ru.nl/cpk/1334/","summary":"\u003cp\u003eThe connecting router (dr-huyg) for all servers in the subnets\n\u003ccode\u003e131.174.30.0/24\u003c/code\u003e, \u003ccode\u003e131.174.31.0/24\u003c/code\u003e and \u003ccode\u003e131.174.16.128/26\u003c/code\u003e will be replaced.\u003c/p\u003e\n\u003cp\u003eIt is expected that this will cause an interruption of ca. 10 minutes\nin the connectivity, but unforeseen circumstances may increase this delay.\u003c/p\u003e\n\u003cp\u003eThe reason to do this now is because of the planned power interruption on July\n22. The old router hardware has a high probability of failing to\nsurvive this.\u003c/p\u003e","title":"router change for most Science services (dr-huyg)"},{"content":"Friday July 21 from 17:00, we will start shutting down compute clusternodes, in order to prepare for the power outage of the Huygens building Saturday July 22. Other servers will be shut down later. The most important servers (mail, home, file, Ceph, gitlab, loginservers) will be shutdown starting Saturday morning 7:00. We will try to keep basic services (DNS/DHCP, SMTP(mail) and license servers) up during this power outage. RU services are not serviced from the Huygens building, so will not be affected.\nFrom Wednesday 19 July 8:00 until Saturday afternoon there is no emergency power backup. If the main power fails in this period, services will go down.\n","permalink":"https://cncz.science.ru.nl/cpk/1333/","summary":"\u003cp\u003eFriday July 21 from 17:00, we will start shutting down compute clusternodes, in order to prepare for\nthe \u003ca href=\"https://www.ru.nl/en/about-us/news/saturday-22-july-closure-of-huygens-building-due-to-power-outage\" target=\"_blank\"\u003epower outage of the Huygens building Saturday July 22\u003c/a\u003e.\nOther servers will be shut down later.\nThe most important servers (mail, home, file, Ceph, gitlab, loginservers) will be shutdown starting Saturday morning 7:00.\nWe will try to keep basic services (DNS/DHCP, SMTP(mail) and license servers) up during this power outage.\nRU services are not serviced from the Huygens building, so will not be affected.\u003c/p\u003e","title":"Science IT services down July 21 and 22 - Huygens building power outage"},{"content":"Due to the expiration of an LDAP certificate, it is temporarily not possible to log in to various services. A new certificate is being installed urgently.\nAffected services include Eduroam in combination with Science logins, VPN, GitLab and Mattermost.\n","permalink":"https://cncz.science.ru.nl/cpk/1332/","summary":"\u003cp\u003eDue to the expiration of an LDAP certificate, it is temporarily not possible to log in to various services.\nA new certificate is being installed urgently.\u003c/p\u003e\n\u003cp\u003eAffected services include Eduroam in combination with Science logins, VPN, GitLab and Mattermost.\u003c/p\u003e","title":"Certificate of authentication server expired"},{"content":"Due to a failure in a power distribition unit (pdu) the servers felixdisk and bioboost went down.\nBoth servers have been connected to another pdu and are now working again.\n","permalink":"https://cncz.science.ru.nl/cpk/1331/","summary":"\u003cp\u003eDue to a failure in a power distribition unit (pdu) the servers felixdisk and bioboost went down.\u003c/p\u003e\n\u003cp\u003eBoth servers have been connected to another pdu and are now working again.\u003c/p\u003e","title":"Downtime Felixdisk and bioboost"},{"content":"The planned routing change, which should not have caused issues for more than a few seconds, didn\u0026rsquo;t work as planned and caused problems for up to 15 minutes.\nUpdate 2023-06-12 - 22:00 The situation has become worse, some problems: DNS resolving, some fileservers and jupyterhub are having problems due to the network change. We will attempt to resolve the issue asap.\nUpdate 2023-06-13 - 11:30 After correcting errors (fixed IP addresses) all services are up again. The network configuration is not redundant yet, but user problems should be over.\nUpdate 2023-06-13 - 12:00 The cause of the dhcp problems has been found and fixed, so DHCP should work again.\n","permalink":"https://cncz.science.ru.nl/cpk/1330/","summary":"\u003cp\u003eThe planned routing change, which should not have caused issues for more than a\nfew seconds, didn\u0026rsquo;t work as planned and caused problems for up to 15\nminutes.\u003c/p\u003e\n\u003ch2 id=\"update-2023-06-12---2200\"\u003eUpdate 2023-06-12 - 22:00\u003c/h2\u003e\n\u003cp\u003eThe situation has become worse, some problems: DNS resolving, some\nfileservers and jupyterhub are having problems due to the network\nchange. We will attempt to resolve the issue asap.\u003c/p\u003e\n\u003ch2 id=\"update-2023-06-13---1130\"\u003eUpdate 2023-06-13 - 11:30\u003c/h2\u003e\n\u003cp\u003eAfter correcting errors (fixed IP addresses) all services are up again.\nThe network configuration is not redundant yet, but user problems should\nbe over.\u003c/p\u003e","title":"networking problems due to routing change"},{"content":"Our smtp mailservers were under attack. In order to prevemt other problems, our configuration limits the number of connections that can be kept open at the same time. We cannot easily distinguish between connections by the attacker(s) and by regular users. When this limit is reached, no new connections can be made.\nTherefore sending e-mail using our mailservers can take a long time or will not work at all. There\u0026rsquo;s a good chance that your IP address will be blocked (max. 1 hour), e.g. if you use loginname@science.ru.nl after June 8, 16:25.\nAs a workaround, for use on campus or after starting VPN, the servers are now configured to mostly service internal clients.\nUpdate 2023-06-01 - 14:00 We are now throttling certain connections and have increased the server\u0026rsquo;s capacity. This has mitigated the issue, so you should be able to send email again. The DDOS is still ongoing.\nUpdate 2023-06-03 - 11:30 The attack is now using more ports, as we try to mitigate this, it will be harder to send e-mail, unless you are using VPN.\nUpdate 2023-06-08 - 16:25 Because the attackers use loginname@machinename.science.ru.nl and we always recommended to use only login name, we have terminated the authentication with loginname@\u0026hellip; . Some users will be inconvenienced by this, but it is easy to remedy by adjusting the settings.\nUpdate 2023-06-23 - 16:19 As the attacks continue, they still impair normal service. Using VPN or mail from the campus will get through easily, but basic authenticated SMTP will likely fail.\nUpdate 2023-06-28 - 11:40 The attack continues. We are now blocking \u0026ldquo;bad\u0026rdquo; IPs for longer, this seems to help and makes the service usable again.\n","permalink":"https://cncz.science.ru.nl/cpk/1329/","summary":"\u003cp\u003eOur smtp mailservers were under attack. In order to prevemt other\nproblems, our configuration limits the number of connections that can\nbe kept open at the same time. We cannot easily distinguish between\nconnections by the attacker(s) and by regular users. When this limit is\nreached, no new connections can be made.\u003c/p\u003e\n\u003cp\u003eTherefore sending e-mail using our mailservers can take a long time or\nwill not work at all. There\u0026rsquo;s a good chance that your IP address will\nbe blocked (max. 1 hour), e.g. if you use \u003ca href=\"mailto:loginname@science.ru.nl\"\u003eloginname@science.ru.nl\u003c/a\u003e after\nJune 8, 16:25.\u003c/p\u003e","title":"DDOS on Science mailservers"},{"content":"The datacenter cooling failed around 07:00 this morning. To prevent damage all non-essential systems are being turned off (clusternodes first).\nMost fileservers have also been turned off. Due to the urgency, some systems that have been turned off may not be in the location with the problem (Huygens HG04.070).\nAround 07:50 the cooling system came online again, about 30 minutes later the temperature dropped to under 25 degrees Celsius.\nAfter ca. 8:35, we started turning systems back on, starting with fileservers and later clusternodes as well. This is now nearly finished. Some hardware cannot easily be managed remotely so that will take a bit longer until someone can turn on the power manually.\n","permalink":"https://cncz.science.ru.nl/cpk/1328/","summary":"\u003cp\u003eThe datacenter cooling failed around 07:00 this morning. To prevent\ndamage all non-essential systems are being turned off (clusternodes first).\u003c/p\u003e\n\u003cp\u003eMost fileservers have also been turned off.\nDue to the urgency, some systems that have been turned off may not be\nin the location with the problem (Huygens HG04.070).\u003c/p\u003e\n\u003cp\u003eAround 07:50 the cooling system came online again, about 30 minutes\nlater the temperature dropped to under 25 degrees Celsius.\u003c/p\u003e\n\u003cp\u003eAfter ca. 8:35, we started turning systems back on, starting\nwith fileservers and later clusternodes as well. This is now nearly\nfinished. Some hardware cannot easily be managed remotely so that will\ntake a bit longer until someone can turn on the power manually.\u003c/p\u003e","title":"Climate control failure in Huygens Datacenter"},{"content":"During the summer break all pcs in the computer labs will be replaced, because they are between four and seven years old. The new pcs will again be dual-boot, with Windows10 22H2 and Ubuntu 22.04. Lecturers who want to test their Linux course software, can do so on the Linux loginserver lilo8, that has Ubuntu 22.04. The new pcs are Dell Optiplex 7400 All-In-One.\nFor employees with pcs with older versions of Ubuntu, this might be a good time to upgrade to Ubuntu 22.04 too. Please contact C\u0026amp;CZ to schedule the upgrade.\nThe only computer lab that will not be upgraded is TK053 (HG02.053), this room will no longer be used as a computer lab.\n","permalink":"https://cncz.science.ru.nl/news/2023-05-16_new-computer-lab-pc-s-and-ubuntu-22-04-during-summer-break/","summary":"\u003cp\u003eDuring the summer break all pcs in the \u003ca href=\"https://cncz.science.ru.nl/howto/terminalkamers/\" target=\"_blank\"\u003ecomputer labs\u003c/a\u003e will be replaced, because they are between four and seven years old.\nThe new pcs will again be dual-boot, with Windows10 22H2 and Ubuntu 22.04.\nLecturers who want to test their Linux course software, can do so on the Linux loginserver lilo8, that has Ubuntu 22.04.\nThe new pcs are \u003ca href=\"https://www.dell.com/nl-nl/shop/desktops-en-werkstations/optiplex-7400-all-in-one/spd/optiplex-7400-aio/\" target=\"_blank\"\u003eDell Optiplex 7400 All-In-One\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eFor employees with pcs with older versions of Ubuntu, this might be a good time to upgrade to Ubuntu 22.04 too. Please \u003ca href=\"/howto/contact\"\u003econtact C\u0026amp;CZ\u003c/a\u003e to schedule the upgrade.\u003c/p\u003e","title":"New computer lab pcs in summer break"},{"content":"On Saturday July 22, all power, including emergency power, in the Huygens building will be switched off for planned maintenance from 08:00 until 12:30. If all goes well, power will be available from 12:30. We expect to need at least a few hours to get all Science services up again. During this time, all but a few basic services will be unavailable. Most servers will be turned off the Friday before. We will attempt to maintain basic DNS/DHCP, SMTP(mail) and license services, but for instance the science mailboxes, home directories, websites, VPN, fileservers, Gitlab, loginservers and compute clusters will not be available during the off period.\n","permalink":"https://cncz.science.ru.nl/cpk/1327/","summary":"\u003cp\u003eOn Saturday July 22, all power, including emergency power, in the Huygens\nbuilding will be switched off for planned maintenance from 08:00 until\n12:30. If all goes well, power will be available from 12:30. We expect\nto need at least a few hours to get all Science services up again. During\nthis time, all but a few basic services will be unavailable.\nMost servers will be turned off the Friday before. We will attempt\nto maintain basic DNS/DHCP, SMTP(mail) and license services, but for\ninstance the science mailboxes, home directories, websites, VPN,\nfileservers, Gitlab, loginservers and compute clusters will not be available\nduring the off period.\u003c/p\u003e","title":"Saturday July 22 - Power interruption Huygens building"},{"content":"The login server lilo6 with Ubuntu 18.04 has been turned off. Login servers are available during the support lifetime of the Linux version we install on them when a new long term support (LTS) version is released. We always provide current OS versions on the login servers, the version installed on our terminal PC\u0026rsquo;s is also on the login server called lilo.science.ru.nl. When newer LTS versions are available we also install a new login server.\n","permalink":"https://cncz.science.ru.nl/news/2023-05-08_lilo6-eol/","summary":"\u003cp\u003eThe login server \u003ccode\u003elilo6\u003c/code\u003e with Ubuntu 18.04 has been turned off. Login servers are available during the support lifetime of the Linux version we install on them when a new long term support (LTS) version is released. We always provide current OS versions on the login servers, the version installed on our terminal PC\u0026rsquo;s is also on the login server called \u003ccode\u003elilo.science.ru.nl\u003c/code\u003e. When newer LTS versions are available we also install a new \u003ca href=\"/howto/hardware-servers/#linux-login-servers\"\u003elogin server\u003c/a\u003e.\u003c/p\u003e","title":"Lilo6 turned off"},{"content":"RU ILS Connectivity announced that Friday April 21 between 18:30 and 20:30 the RU network would be separated from the internet for a period of ca 30 minutes, in order to carry out maintenance.\n","permalink":"https://cncz.science.ru.nl/cpk/1326/","summary":"\u003cp\u003eRU ILS Connectivity announced that Friday April 21 between 18:30 and 20:30 the RU network would be separated from the internet for a period of ca 30 minutes, in order to carry out maintenance.\u003c/p\u003e","title":"Radboud internet 30 minutes down for maintenance Friday April 21 18:30-20:30"},{"content":"Friday`April 21 at 10 o’clock C\u0026amp;CZ will commence a GitLab server migration. During the migration, working with Gitlab will not be possible.\nBecause Mattermost is running on the same installation of Gitlab, it will be unavailable during the process as well.\nWe expect things to be up and running again around noon.\n","permalink":"https://cncz.science.ru.nl/cpk/1325/","summary":"\u003cp\u003eFriday`April 21 at 10 o’clock C\u0026amp;CZ will commence a GitLab server migration. During the migration, working with Gitlab will not be possible.\u003c/p\u003e\n\u003cp\u003eBecause Mattermost is running on the same installation of Gitlab, it will be unavailable during the process as well.\u003c/p\u003e\n\u003cp\u003eWe expect things to be up and running again around noon.\u003c/p\u003e","title":"Cancelled: GitLab down April 21 10:00-12:00 (maintenance)"},{"content":"In the week of April 17, C\u0026amp;CZ will to move to the new offices in wing 5 on the ground floor of the Huygens building. The C\u0026amp;CZ helpdesk will still have an entrance on the main street at HG00.051. See also our contact info.\n","permalink":"https://cncz.science.ru.nl/news/2023-04-11_c-cz-move-to-ground-floor-of-huygens/","summary":"\u003cp\u003eIn the week of April 17, C\u0026amp;CZ will to move to the new offices in wing 5\non the ground floor of the Huygens building. The C\u0026amp;CZ helpdesk will still\nhave an entrance on the main street at \u003ccode\u003eHG00.051\u003c/code\u003e. See also our \u003ca href=\"/howto/contact\"\u003econtact info\u003c/a\u003e.\u003c/p\u003e","title":"C\u0026CZ move to ground floor of Huygens"},{"content":"RU ILS Connectivity announced that network maintenance will be carried out next Wednesday evening that will cause short disturbances of network connectivity for wired and wireless systems in and around wing 8 Huygens on all floors. For wired network outlets, one can check whether they will be affected by looking at the outlet number (starting with 113- for affected systems) or visiting FNWI ethergids.\n","permalink":"https://cncz.science.ru.nl/cpk/1324/","summary":"\u003cp\u003eRU ILS Connectivity announced that network maintenance will be\ncarried out next Wednesday evening that will cause short disturbances\nof network connectivity for wired and wireless systems in and\naround wing 8 Huygens on all floors.\nFor wired network outlets, one can check\nwhether they will be affected by looking at the outlet number\n(starting with 113- for affected systems) or visiting \u003ca href=\"https://cncz.science.ru.nl/howto/netwerk-ethergids/\" target=\"_blank\"\u003eFNWI\nethergids\u003c/a\u003e.\u003c/p\u003e","title":"FNWI network maintenance Wednesday April 12 19:00-23:00 Huygens in/near wing 8"},{"content":"RU ILS Connectivity announced that network maintenance will be carried out next Monday evening that will cause short disturbances of network connectivity for wired and wireless systems in and around wing 3 Huygens on all floors except the ground floor. For wired network outlets, one can check whether they will be affected by looking at the outlet number (starting with 107- for affected systems) or visiting FNWI ethergids.\n","permalink":"https://cncz.science.ru.nl/cpk/1322/","summary":"\u003cp\u003eRU ILS Connectivity announced that network maintenance will be\ncarried out next Monday evening that will cause short disturbances\nof network connectivity for wired and wireless systems in and\naround wing 3 Huygens on all floors except the ground floor.\nFor wired network outlets, one can check\nwhether they will be affected by looking at the outlet number\n(starting with 107- for affected systems) or visiting \u003ca href=\"https://cncz.science.ru.nl/howto/netwerk-ethergids/\" target=\"_blank\"\u003eFNWI\nethergids\u003c/a\u003e.\u003c/p\u003e","title":"FNWI network maintenance Monday April 3 19:00-23:00 Huygens in/near wing 3 except ground floor"},{"content":"RU ILS Connectivity announced that network maintenance will be carried out next Wednesday evening that will cause short disturbances of network connectivity for wired and wireless systems in and around wing 7 Huygens on all floors except the ground floor. For wired network outlets, one can check whether they will be affected by looking at the outlet number (starting with 110- for affected systems) or visiting FNWI ethergids.\n","permalink":"https://cncz.science.ru.nl/cpk/1323/","summary":"\u003cp\u003eRU ILS Connectivity announced that network maintenance will be\ncarried out next Wednesday evening that will cause short disturbances\nof network connectivity for wired and wireless systems in and\naround wing 7 Huygens on all floors except the ground floor.\nFor wired network outlets, one can check\nwhether they will be affected by looking at the outlet number\n(starting with 110- for affected systems) or visiting \u003ca href=\"https://cncz.science.ru.nl/howto/netwerk-ethergids/\" target=\"_blank\"\u003eFNWI\nethergids\u003c/a\u003e.\u003c/p\u003e","title":"FNWI network maintenance Wednesday April 5 19:00-23:00 Huygens in/near wing 7"},{"content":"An awayday for the C\u0026amp;CZ department is scheduled for Tuesday March 28. C\u0026amp;CZ can be reached in case of serious disruptions of services.\n","permalink":"https://cncz.science.ru.nl/news/2023-03-26_cncz-heidag-dinsdag-28-maart/","summary":"\u003cp\u003eAn awayday for the C\u0026amp;CZ department is scheduled for Tuesday March 28.\nC\u0026amp;CZ can be reached in case of serious disruptions of services.\u003c/p\u003e","title":"C\u0026CZ awayday Tuesday March 28"},{"content":"March 20, the poster printer kamerbreed started producing bad colours. The new print heads that were received a fw days later didn\u0026rsquo;t solve the problem. Therefore we called for a repair, that will probably be scheduled in the week of April 17.\nIn the meantime, users that need posters could go to Radboud Post\u0026amp;Print.\n","permalink":"https://cncz.science.ru.nl/cpk/1321/","summary":"\u003cp\u003eMarch 20, the poster printer kamerbreed started producing bad colours. The new print heads that were received a fw days later didn\u0026rsquo;t solve the problem.\nTherefore we called for a repair, that will probably be scheduled in the week of April 17.\u003c/p\u003e\n\u003cp\u003eIn the meantime, users that need posters could go to \u003ca href=\"https://www.ru.nl/en/services/services-and-facilities/shops/post-print\" target=\"_blank\"\u003eRadboud Post\u0026amp;Print\u003c/a\u003e.\u003c/p\u003e","title":"Poster printer kamerbreed broken"},{"content":"The latest version of Matlab, R2023a, is available for departments that have licenses. The software and license codes can be obtained through a mail to postmaster for those entitled to it. The software can also be found on the install-disc. All C\u0026amp;CZ-managed Linux machines have this version installed, an older version (/opt/matlab-R2022b/bin/matlab) is still available temporarily. The C\u0026amp;CZ-managed Windows machines will not receive a new version during the semester to prevent problems with version dependencies in current lectures.\n","permalink":"https://cncz.science.ru.nl/news/2023-03-21_matlab-r2023a-available/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/matlab/\"\u003eMatlab\u003c/a\u003e, R2023a, is available\nfor departments that have licenses. The software and license codes can\nbe obtained through a mail to postmaster for those entitled to it. The\nsoftware can also be found on the \u003ca href=\"/tags/software\"\u003einstall\u003c/a\u003e-disc. All\nC\u0026amp;CZ-managed Linux machines have this version installed, an older\nversion (/opt/matlab-R2022b/bin/matlab) is still available temporarily.\nThe C\u0026amp;CZ-managed Windows machines will not receive a new version during\nthe semester to prevent problems with version dependencies in current\nlectures.\u003c/p\u003e","title":"Matlab R2023a available"},{"content":"The latest version of Maple, Maple2023, for Windows/macOS/Linux can be found on the Install network share and has been installed on C\u0026amp;CZ managed Linux computers. License codes can be requested from C\u0026amp;CZ helpdesk or postmaster.\n","permalink":"https://cncz.science.ru.nl/news/2023-03-16_maple-new-version-maple2023/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/maple/\"\u003eMaple\u003c/a\u003e, Maple2023, for\nWindows/macOS/Linux can be found on the\n\u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e network share and has been installed\non C\u0026amp;CZ managed Linux computers. License codes can be requested from\nC\u0026amp;CZ helpdesk or postmaster.\u003c/p\u003e","title":"Maple new version Maple2023"},{"content":"Starting March 2023, external GitLab users of gitlab.science.ru.nl will be migrated to Science logins that only have access to GitLab.\nUntil now, external GitLab logins were created in GitLab itself, separate from the Science login administration. By migrating the external GitLab users to Science logins with access to GitLab only, the management of these logins is improved. The requester (responsible for the Science login) can manage these logins in DIY.\nFor external user of GitLab that are still required after April 1, 2023, Science logins with GitLab access only can be requested, see Science login requests. Specify which existing GitLab account is to be migrated, then we will link it to the new Science login.\nAs soon as the new Science login has been created, a password must first be set in DIY. Only then is it possible to log in to gitlab.science.ru.nl. Completely new Science logins for GitLab are only visible to others after the first login to GitLab. For example, if you want to add these people to a project.\n","permalink":"https://cncz.science.ru.nl/news/2023-03-10_migrating-external-gitlab-accounts/","summary":"\u003cp\u003eStarting March 2023, external GitLab users of\n\u003ca href=\"https://gitlab.science.ru.nl\" target=\"_blank\"\u003egitlab.science.ru.nl\u003c/a\u003e will be migrated\nto Science logins that only have access to GitLab.\u003c/p\u003e\n\u003cp\u003eUntil now, external GitLab logins were created in GitLab itself,\nseparate from the Science login administration. By migrating the\nexternal GitLab users to Science logins with access to GitLab only,\nthe management of these logins is improved. The requester (responsible for the Science login) can\nmanage these logins in \u003ca href=\"https://dhz.science.ru.nl\" target=\"_blank\"\u003eDIY\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eFor external user of GitLab that are still required after April 1, 2023,\nScience logins with GitLab access only can be requested, see \u003ca href=\"/howto/login/#request-a-science-login\"\u003eScience\nlogin requests\u003c/a\u003e. Specify which\nexisting GitLab account is to be migrated, then we will link it to the\nnew Science login.\u003c/p\u003e","title":"Migration of external GitLab users to Science logins with access only to GitLab"},{"content":"RU ILS Connectivity announced that network maintenance will be carried out next Monday evening that will cause short disturbances of network connectivity for wired and wireless systems in and around wing 3 Huygens and in tunnels/basement of the former A1 building. For wired network outlets, one can check whether they will be affected by looking at the outlet number (starting with 109- and 73- for affected systems) or visiting FNWI ethergids.\n","permalink":"https://cncz.science.ru.nl/cpk/1319/","summary":"\u003cp\u003eRU ILS Connectivity announced that network maintenance will be\ncarried out next Monday evening that will cause short disturbances\nof network connectivity for wired and wireless systems in and\naround wing 3 Huygens and in tunnels/basement of the former A1 building.\nFor wired network outlets, one can check\nwhether they will be affected by looking at the outlet number\n(starting with 109- and 73- for affected systems) or visiting \u003ca href=\"https://cncz.science.ru.nl/howto/netwerk-ethergids/\" target=\"_blank\"\u003eFNWI\nethergids\u003c/a\u003e.\u003c/p\u003e","title":"FNWI network maintenance Monday March 6 19:00-23:00 Huygens ground floor in/near wing 3 and tunnels/basement A1"},{"content":"RU ILS Connectivity announced that network maintenance will be carried out next Wednesday evening that will cause short disturbances of network connectivity for wired and wireless systems in Goudsmit/NMR and Nanolab. For wired network outlets, one can check whether they will be affected by looking at the outlet number (starting with 72- or 116- for affected systems) or visiting FNWI ethergids.\n","permalink":"https://cncz.science.ru.nl/cpk/1320/","summary":"\u003cp\u003eRU ILS Connectivity announced that network maintenance will be carried\nout next Wednesday evening that will cause short disturbances of network\nconnectivity for wired and wireless systems in Goudsmit/NMR and Nanolab.\nFor wired network outlets, one can check whether they\nwill be affected by looking at the outlet number (starting\nwith 72- or 116- for affected systems) or visiting \u003ca href=\"https://cncz.science.ru.nl/howto/netwerk-ethergids/\" target=\"_blank\"\u003eFNWI\nethergids\u003c/a\u003e.\u003c/p\u003e","title":"FNWI network maintenance Wednesday March 8 19:00-23:00 Goudsmit/NMR and Nanolab"},{"content":"The network configuration change of Thursday evening caused wired network connections to fail getting an IP address. The wireless network didn\u0026rsquo;t have that problem.\nTechnically, the dhcp options we\u0026rsquo;re using were not yet allowed on the new distribution switch (DR-H).\nUpdate: the problem should be resolved, but in case of problems, please try rebooting the machine to resolve the issue.\n","permalink":"https://cncz.science.ru.nl/cpk/1318/","summary":"\u003cp\u003eThe network configuration change of Thursday evening caused wired\nnetwork connections to fail getting an IP address. The wireless network\ndidn\u0026rsquo;t have that problem.\u003c/p\u003e\n\u003cp\u003eTechnically, the dhcp options we\u0026rsquo;re using were not yet allowed on the new\ndistribution switch (DR-H).\u003c/p\u003e\n\u003cp\u003eUpdate: the problem should be resolved, but in case of problems, please try\nrebooting the machine to resolve the issue.\u003c/p\u003e","title":"No ip address on the wired network in Huygens"},{"content":"Because of problems and reacheability machine rebooted.\nCause of problem remains unknown.\n","permalink":"https://cncz.science.ru.nl/cpk/1317/","summary":"\u003cp\u003eBecause of problems and reacheability machine rebooted.\u003c/p\u003e\n\u003cp\u003eCause of problem remains unknown.\u003c/p\u003e","title":"Reboot cn106"},{"content":"Thursday evening between 19:00 and 21:00, all wired and wireless user networks in Huygens, Goudsmit/NMR, Nanolab and FELIX-HFML will be switched to a new router. A downtime of ca. 10 minutes is expected.\n","permalink":"https://cncz.science.ru.nl/cpk/1316/","summary":"\u003cp\u003eThursday evening between 19:00 and 21:00, all wired and wireless user\nnetworks in Huygens, Goudsmit/NMR, Nanolab and FELIX-HFML will be switched\nto a new router. A downtime of ca. 10 minutes is expected.\u003c/p\u003e","title":"FNWI network maintenance Thursday Feb 23 19:00-21:00"},{"content":"A new version of Mathematica (13.2.1) has been installed on all C\u0026amp;CZ managed Linux systems, older versions can still be found in /vol/mathematica.\nWhen connected wired or wireless on campus or through VPN, the software for Windows, Linux and macOS can be found on the C\u0026amp;CZ Install disc.\nDuring the installation you must specify:\nLicense server: mathematica.science.ru.nl License: L4601-6478 According to the Mathematica Quick Revision History: \u0026ldquo;Version 13.2.1 includes over a hundred bug fixes, feature enhancements, performance improvements and security updates.\u0026rdquo;\n","permalink":"https://cncz.science.ru.nl/news/2023-02-17_new-version-of-mathematica-13-2-1/","summary":"\u003cp\u003eA new version of \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e (13.2.1) has been\ninstalled on all C\u0026amp;CZ managed Linux systems, older versions can still be\nfound in \u003ccode\u003e/vol/mathematica\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eWhen connected wired or wireless on campus or through \u003ca href=\"/howto/vpn/\"\u003eVPN\u003c/a\u003e,\nthe software for Windows, Linux and macOS can be found on the\n\u003ca href=\"https://install.science.ru.nl/science/Mathematica/\" target=\"_blank\"\u003eC\u0026amp;CZ Install disc\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eDuring the installation you must specify:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003e License server: mathematica.science.ru.nl\n License: L4601-6478\n\u003c/code\u003e\u003c/pre\u003e\n\u003cp\u003eAccording to the \u003ca href=\"https://www.wolfram.com/mathematica/quick-revision-history.html\" target=\"_blank\"\u003eMathematica Quick Revision\nHistory\u003c/a\u003e:\n\u0026ldquo;Version 13.2.1 includes over a hundred bug fixes, feature enhancements, performance improvements and security updates.\u0026rdquo;\u003c/p\u003e","title":"New version of Mathematica (13.2.1)"},{"content":"There is a new version of LabVIEW from NI.com, version 2022Q3.\nNI.com communicated that they will move to a subscription model for LabVIEW licencing starting with version 2022Q3. C\u0026amp;CZ manages a FlexNet license server for LabVIEW 2022Q3, with a limited number of licenses and a deadline in April for extension of the license. Earlier versions of LabVIEW work standalone and unlimited in terms of time.\nThe software can be found on the C\u0026amp;CZ Install disc. The license server is:\nlabview.science.ru.nl:28000 In order to be able to check out a license, names of pc\u0026rsquo;s and/of users have to be entered by C\u0026amp;CZ in the license server. For remote pcs this DNS suffix has to be added to the IPv4 DNS configuration: science.ru.nl\n","permalink":"https://cncz.science.ru.nl/news/2023-02-14_ni-labview-2022q3-and-higher-use-a-subscription-license/","summary":"\u003cp\u003eThere is a new version of \u003ca href=\"/howto/labview/\"\u003eLabVIEW\u003c/a\u003e from\n\u003ca href=\"https://ni.com\" target=\"_blank\"\u003eNI.com\u003c/a\u003e, version 2022Q3.\u003c/p\u003e\n\u003cp\u003eNI.com communicated that they will move to a\n\u003ca href=\"https://www.ni.com/en/landing/subscription-software.html\" target=\"_blank\"\u003esubscription model for LabVIEW\nlicencing\u003c/a\u003e starting with version 2022Q3.\nC\u0026amp;CZ manages a FlexNet license server for LabVIEW 2022Q3, with a limited\nnumber of licenses and a deadline in April for extension of the license.\nEarlier versions of LabVIEW work standalone and unlimited in terms of time.\u003c/p\u003e\n\u003cp\u003eThe software can be found on the \u003ca href=\"https://install.science.ru.nl/science/NI%20LabVIEW/\" target=\"_blank\"\u003eC\u0026amp;CZ Install disc\u003c/a\u003e. The license server is:\u003c/p\u003e","title":"NI LabVIEW 2022Q3 and higher subscription license"},{"content":"The license for Mathematica has been expanded temporarily to an unlimited campus license for the whole of 2023: all employees and students may use Mathematica unlimitedly in 2023 on the RU network. For home use, one must therefore use a VPN.\nThe software can be found on the C\u0026amp;CZ Install disc. During the installation you must specify:\nLicense server: mathematica.science.ru.nl License: L4601-6478 The introductory course \u0026ldquo;Mathematica Basic Principles: An Introduction\u0026rdquo; can be taken for free at CANdiensten in Amsterdam.\nFor questions or problems, mail mathematica@science.ru.nl.\n","permalink":"https://cncz.science.ru.nl/news/2023-02-14_unlimited-mathematica-license-in-2023-for-ru-staff-and-students/","summary":"\u003cp\u003eThe license for \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e has been expanded\ntemporarily to an unlimited campus license for the whole of 2023: all\nemployees and students may use Mathematica unlimitedly in 2023 on the\nRU network. For home use, one must therefore use a \u003ca href=\"/howto/vpn/\"\u003eVPN\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eThe software can be found on the \u003ca href=\"https://install.science.ru.nl/science/Mathematica/\" target=\"_blank\"\u003eC\u0026amp;CZ Install disc\u003c/a\u003e. During the installation you must specify:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003e License server: mathematica.science.ru.nl\n License: L4601-6478\n\u003c/code\u003e\u003c/pre\u003e\n\u003cp\u003eThe introductory course \u003ca href=\"https://can.nl/events/mathematica-basic-principles/\" target=\"_blank\"\u003e\u0026ldquo;Mathematica Basic Principles: An Introduction\u0026rdquo;\u003c/a\u003e\ncan be taken for free at CANdiensten in Amsterdam.\u003c/p\u003e","title":"Unlimited Mathematica license in 2023 for RU staff and students"},{"content":"RU ILS Connectivity announced that network maintenance will be carried out next Wednesday evening that will cause short disturbances of network connectivity for wired and wireless systems in and around Wing 5 Huygens. For wired network outlets, one can check whether they will be affected by looking at the outlet number (starting with 111- for affected systems) or visiting FNWI ethergids.\n","permalink":"https://cncz.science.ru.nl/cpk/1315/","summary":"\u003cp\u003eRU ILS Connectivity announced that network maintenance will be\ncarried out next Wednesday evening that will cause short disturbances\nof network connectivity for wired and wireless systems in and\naround Wing 5 Huygens. For wired network outlets, one can check\nwhether they will be affected by looking at the outlet number\n(starting with 111- for affected systems) or visiting \u003ca href=\"https://cncz.science.ru.nl/howto/netwerk-ethergids/\" target=\"_blank\"\u003eFNWI\nethergids\u003c/a\u003e.\u003c/p\u003e","title":"Wing 5 Huygens network maintenance Wednesday Feb 15 19:00-20:30"},{"content":"After the scheduled reboot of the home2 server, the nfs service failed to start. A manual reboot solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1314/","summary":"\u003cp\u003eAfter the scheduled reboot of the \u003ccode\u003ehome2\u003c/code\u003e server, the nfs service failed to start. A manual reboot solved the problem.\u003c/p\u003e","title":"Homeserver nfs service failed to come up"},{"content":"C\u0026amp;CZ helpdesk can assist you by taking over your screen using TeamViewer. In case you are requested to download TeamViewer, use the following link:\nhttps://get.teamviewer.com/ischelpdesk\n","permalink":"https://cncz.science.ru.nl/howto/remote-assistance/","summary":"\u003cp\u003eC\u0026amp;CZ helpdesk can assist you by taking over your screen using \u003cem\u003eTeamViewer\u003c/em\u003e.\nIn case you are requested to download TeamViewer, use the following link:\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003ca href=\"https://get.teamviewer.com/ischelpdesk\" target=\"_blank\"\u003ehttps://get.teamviewer.com/ischelpdesk\u003c/a\u003e\u003c/p\u003e\n\u003c/blockquote\u003e","title":"Remote Assistance"},{"content":"RU ILS Connectivity announced that network maintenance will be carried out next Monday (Wing 1) and Wednesday (Wing 2) evening that will cause short disturbances of network connectivity for wired and wireless systems in Huygens. For wired network outlets, one can check whether they will be affected by looking at the outlet number (starting with 105- for Wing 1 affected systems and 106- for Wing 2) or visiting FNWI ethergids.\n","permalink":"https://cncz.science.ru.nl/cpk/1313/","summary":"\u003cp\u003eRU ILS Connectivity announced that network maintenance will be carried out\nnext Monday (Wing 1) and Wednesday (Wing 2) evening that will cause short\ndisturbances of network connectivity for wired and wireless systems in\nHuygens. For wired network outlets, one can check whether\nthey will be affected by looking at the outlet number (starting with\n105- for Wing 1 affected systems and 106- for Wing 2) or visiting \u003ca href=\"https://cncz.science.ru.nl/howto/netwerk-ethergids/\" target=\"_blank\"\u003eFNWI\nethergids\u003c/a\u003e.\u003c/p\u003e","title":"Wing 1 and 2 Huygens network maintenance Monday Jan 30 and Wednesday Feb 1 19:00-23:00"},{"content":"RU ILS Connectivity is replacing network access switches in FNWI. This causes short disturbances of network connectivity for wired and wireless systems on several evenings between 19:00 and 23:00 hours for affected wings/locations, i.e. connected to a specific SER (Satellite Equipment Room). For wired network outlets, one can check whether they will be affected by looking at the outlet number (starting with the SER number for affected systems) or visiting FNWI ethergids.\nGlobal schedule:\nMonday Jan 30: SER 105 (in and around wing 1 Huygens, all floors). Wednesday Feb 1: SER 106 (in and around wing 2 Huygens, all floors). Mid-February: SER 111. Late February: brief interruption in the evening for networks in Huygens, NMR, Nanolab, HFML-FELIX. March: SER 109, 73, 72, 116, 101 and 135. Early April: SER 107, 110 and 113. ","permalink":"https://cncz.science.ru.nl/news/2023-01-24_network-maintenance-huygens-nmr-nanolab-hfml-felix-january-april-2023/","summary":"\u003cp\u003eRU ILS Connectivity is replacing network access switches in FNWI. This\ncauses short disturbances of network connectivity for wired and\nwireless systems on several evenings between 19:00 and 23:00 hours\nfor affected wings/locations, i.e. connected to a specific SER\n(Satellite Equipment Room). For wired network outlets, one can\ncheck whether they will be affected by looking at the outlet number\n(starting with the SER number for affected systems) or visiting \u003ca href=\"https://cncz.science.ru.nl/howto/netwerk-ethergids/\" target=\"_blank\"\u003eFNWI\nethergids\u003c/a\u003e.\u003c/p\u003e","title":"Network maintenance Huygens, NMR, Nanolab, HFML-FELIX January-April 2023"},{"content":"ILS Connectivity announced that network maintenance will be carried out next Monday evening that will cause short disturbances of network connectivity for wired and wireless systems in and near wing 4 of the Huygens building. For wired network outlets, one can check whether they will be affected by looking at the outlet number (starting with 108- for affected systems) or visiting FNWI ethergids.\n","permalink":"https://cncz.science.ru.nl/cpk/1312/","summary":"\u003cp\u003eILS Connectivity announced that network maintenance will be carried out next Monday evening\nthat will cause short disturbances of network connectivity for wired and wireless systems in and near wing 4 of the Huygens building.\nFor wired network outlets, one can check whether they will be affected by looking at\nthe outlet number (starting with 108- for affected systems) or visiting \u003ca href=\"https://cncz.science.ru.nl/howto/netwerk-ethergids/\" target=\"_blank\"\u003eFNWI ethergids\u003c/a\u003e.\u003c/p\u003e","title":"Wing 4 Huygens network maintenance Monday January 23 19:00-23:00"},{"content":"Science Jitsi Security As of January 18th, 2023, starting a jitsi meeting room requires you to authenticate with your science login and password. Guests do not require any authentication once the session is running. Jitsi is a collection of free and open-source multiplatform voice (VoIP), video conferencing and instant messaging applications for the web platform, Windows, Linux, macOS, iOS and Android, of which Jitsi Meet videoconferencing is the most well-known.\n","permalink":"https://cncz.science.ru.nl/news/2023-01-19_jitsi-only-authenticated/","summary":"\u003ch1 id=\"science-jitsi-security\"\u003eScience Jitsi Security\u003c/h1\u003e\n\u003cp\u003eAs of January 18th, 2023, starting a \u003ca href=\"https://jitsi.science.ru.nl/\" target=\"_blank\"\u003ejitsi\u003c/a\u003e\nmeeting room requires you to authenticate with your \u003ca href=\"/howto/login\"\u003escience\nlogin\u003c/a\u003e and password. Guests do not require any\nauthentication once the session is running. \u003ca href=\"https://en.wikipedia.org/wiki/Jitsi\" target=\"_blank\"\u003eJitsi\u003c/a\u003e is a collection of\nfree and open-source multiplatform voice (VoIP), video conferencing and\ninstant messaging applications for the web platform, Windows, Linux,\nmacOS, iOS and Android, of which Jitsi Meet videoconferencing is the most well-known.\u003c/p\u003e","title":"Science Jitsi Meet video conferencing only authenticated"},{"content":"What path to mount? The storage page describes the paths for your home directory and network shares. Once you know what network share to mount, follow the steps for your operating system below.\nInfo\nA VPN connection is required when accessing these paths from outside of the RU network.\nIf you have trouble connecting to a network share after following the steps below, do not hessitate to contact us. We\u0026rsquo;ll be happy to assist you!\nWindows To assign a drive letter to a network share:\nOpen file explorer and go to This PC In the ribbon select Computer -\u0026gt; Map network drive -\u0026gt; Map network drive Choose a drive letter and fill in the network share path, which starts with \\\\ Select Reconnect at sign-in Select Connect using different credentials Click Finish Fill in your Science loginname and your password Select Remember my credentials and click Ok The network drive should now be visible in Explorer. If not? Contact us!\nmacOS To connect to a network share on a macOS system:\nOpen Finder In Finder Under the Go menu, choose Connect to Server Or use the Command + K keyboard short cut to get ther in one click Specify the share path, which starts with smb://..., and click Connect Use your Science account and your password to authenticate The network drive should now be available in Finder. If not? Contact us!\nLinux To mount a network share on a Ubuntu Linux system:\nOpen the file manager Files On the left side, click +Other Locations In the bottom bar, at Connect to Server, enter the network share path, which starts with smb://... Click the Connect button A dialog pops up that asks for authentication For Connect as, select Registered User Fill in your Science account and your password (Leave the suggested field Domain unchanged, it\u0026rsquo;s value actually does not matter) Choose weather or not your system should remember your password Hit hit the Connect button to finalize The network drive should now be available in \u0026lsquo;Files\u0026rsquo;. If not? Contact us!\nMobile devices Mobile devices have no built-in or standard way of accessing network shares. Various apps fill in that gap. These are apps that support accessing network shares:\nAndroid Description Astro File Browser + Astro SMB module File manager SolidExplorer File manager SyncMe Wireless Sync app FolderSync Lite or FolderSync Pro Sync app iOS Description FileBrowser File manager with built-in document viewer GoodReader Primarily for PDF documents ","permalink":"https://cncz.science.ru.nl/howto/mount-a-network-share/","summary":"\u003ch1 id=\"what-path-to-mount\"\u003eWhat path to mount?\u003c/h1\u003e\n\u003cp\u003eThe \u003ca href=\"../storage\"\u003estorage page\u003c/a\u003e describes the paths for your \u003ca href=\"../storage#home-directory-paths\"\u003ehome directory\u003c/a\u003e and \u003ca href=\"../storage#network-share-paths\"\u003enetwork shares\u003c/a\u003e. Once you know what network share to mount, follow the steps for your operating system below.\u003c/p\u003e\n\u003cdiv class=\"notice info\" \u003e\n\u003cp class=\"first notice-title\"\u003e\u003cspan class=\"icon-notice baseline\"\u003e\u003csvg\u003e\u003cuse href=\"#info-notice\"\u003e\u003c/use\u003e\u003c/svg\u003e\u003c/span\u003eInfo\u003c/p\u003e\u003cp\u003eA \u003ca href=\"../vpn\"\u003eVPN\u003c/a\u003e connection is required when accessing these paths from outside of the RU network.\u003c/p\u003e\u003c/div\u003e\n\n\u003cblockquote\u003e\n\u003cp\u003eIf you have trouble connecting to a network share after following the steps below, do not hessitate to \u003ca href=\"../contact\"\u003econtact us\u003c/a\u003e. We\u0026rsquo;ll be happy to assist you!\u003c/p\u003e","title":"Mounting a network share"},{"content":"ILS Connectivity announced that network maintenance will be carried out on the internet connection of Radboud University on February 10 between 18:00 and 23:00. Network connections may be disturbed several times, each lasting less than 15 minutes.\n","permalink":"https://cncz.science.ru.nl/cpk/1311/","summary":"\u003cp\u003eILS Connectivity announced that network maintenance will be carried out on the internet connection of Radboud University on February 10 between 18:00 and 23:00. Network connections may be disturbed several times, each lasting less than 15 minutes.\u003c/p\u003e","title":"Maintenance RU internet connection Friday Feb 10 18:00-23:00"},{"content":"ILS Connectivity announced that network maintenance will be carried out next Monday evening that will cause short disturbances of network connectivity for wired and wireless systems in and near wing 6 of the Huygens building. For wired network outlets, one can check whether they will be affected by looking at the outlet number (starting with 112- for affected systems) or visiting FNWI ethergids.\n","permalink":"https://cncz.science.ru.nl/cpk/1310/","summary":"\u003cp\u003eILS Connectivity announced that network maintenance will be carried out next Monday evening\nthat will cause short disturbances of network connectivity for wired and wireless systems in and near wing 6 of the Huygens building.\nFor wired network outlets, one can check whether they will be affected by looking at\nthe outlet number (starting with 112- for affected systems) or visiting \u003ca href=\"https://cncz.science.ru.nl/howto/netwerk-ethergids/\" target=\"_blank\"\u003eFNWI ethergids\u003c/a\u003e.\u003c/p\u003e","title":"Wing 6 Huygens network maintenance Monday January 16 19:00-23:00"},{"content":"Also see the working from home page provided by the central IT Service Centre.\nEmail User webmail or your local e-mail client.\nLibrary How to get access to the University Library (when you are off-campus).\nBASS BASS can only be accessed directly from the campus network or through VPN from any Internet location. Note however that from a small part of the subnets at the Faculty of Science, direct access to BASS is not possible. These subnets are the ones with servers that can be accessed from the Internet.\nFiles on network discs There are two ways to access your network files:\nEstablish a VPN connection and access network shares like you would normally do Use an SCP client to connect to an SSH login server. Chat Use your Science login to login to Mattermost. You can define your own channels and communicate with your colleagues. Check this page for the user manual.\nMeetings Video conferencing from the browser: https://jitsivm.science.ru.nl Video conferencing + notes + presentation sharing: BigBlueButton stopped due to security issues Microsoft teams Conference calls: https://conferencecall.nl Zoom either free or you can request a license from the University for larger meetings. Linux Login Server / Cluster See SSH.\nFrom there, login to the Science cluster.\nCode collaboration Use your Science login to login to GitLab.\nHelp! You can ask for help in the usual way.\nRemote Desktop (last resort!) In some cases, there is no alternative to working on your work PC. However this should be a last resort and not to be used all the time. It puts the most strain on the VPN service and it requires the PC to have a permanent IP address, which is not the common situation.\nIf you really need this, please send e-mail to postmaster@science.ru.nl with the following information:\nwho is maintaining the PC? You, C\u0026amp;CZ or ISC hostname or ip address of your PC\nSometimes additional information like room number and outlet number helps to resolve ambiguities the username you use to login to the PC (in case PC is managed by C\u0026amp;CZ) reason why you need it (we may know alternatives you didn’t think of) In order to use Remote Desktop you need to:\nSetup VPN at home Enable your Windows Computer at the faculty for Remote Desktop Connect with remote desktop to \u0026quot;yourworkpc\u0026quot;.science.ru.nl ","permalink":"https://cncz.science.ru.nl/howto/thuiswerken/","summary":"\u003cp\u003eAlso see the \u003ca href=\"https://www.ru.nl/ict-uk/staff/working-from-home/\" target=\"_blank\"\u003eworking from home\u003c/a\u003e page provided by the central IT Service Centre.\u003c/p\u003e\n\u003ch2 id=\"email\"\u003eEmail\u003c/h2\u003e\n\u003cp\u003eUser \u003ca href=\"/howto/email\"\u003ewebmail or your local e-mail client\u003c/a\u003e.\u003c/p\u003e\n\u003ch2 id=\"library\"\u003eLibrary\u003c/h2\u003e\n\u003cp\u003eHow to get \u003ca href=\"https://www.ru.nl/library/services/study/access-digital-library/\" target=\"_blank\"\u003eaccess to the University Library (when you are off-campus)\u003c/a\u003e.\u003c/p\u003e\n\u003ch2 id=\"bass\"\u003eBASS\u003c/h2\u003e\n\u003cp\u003e\u003ca href=\"/howto/bass\"\u003eBASS\u003c/a\u003e can only be accessed directly from the campus network or through \u003ca href=\"/howto/vpn\"\u003eVPN\u003c/a\u003e from any Internet location. Note however that from a small part of the subnets at the Faculty of Science, direct access to BASS is not possible. These subnets are the ones with servers that can be accessed from the Internet.\u003c/p\u003e","title":"Work from Home - FNWI"},{"content":"A new version of Mathematica (13.2.0) has been installed on all C\u0026amp;CZ managed Linux systems, older versions can still be found in /vol/mathematica. The installation files for Windows, Linux and macOS can be found on the Install-disk, also for older versions of Mathematica. Installation and license info can be requested from C\u0026amp;CZ.\nAccording to the Mathematica Quick Revision History: \u0026ldquo;Version 13.2 introduces new functionality in astronomy and compilation, as well as substantially enhancing functions for machine learning, trees, mathematical computations, video and more. This release also includes over a thousand bug fixes, documentation enhancements and significant performance improvements.\u0026rdquo;\n","permalink":"https://cncz.science.ru.nl/news/2022-12-23_new-version-of-mathematica-13-2-0/","summary":"\u003cp\u003eA new version of \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e (13.2.0) has been\ninstalled on all C\u0026amp;CZ managed Linux systems, older versions can still be\nfound in \u003ccode\u003e/vol/mathematica\u003c/code\u003e. The installation files for Windows, Linux\nand macOS can be found on the \u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e-disk,\nalso for older versions of Mathematica. Installation and license info\ncan be \u003ca href=\"/howto/contact/\"\u003erequested from C\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eAccording to the \u003ca href=\"https://www.wolfram.com/mathematica/quick-revision-history.html\" target=\"_blank\"\u003eMathematica Quick Revision History\u003c/a\u003e: \u0026ldquo;Version 13.2 introduces\nnew functionality in astronomy and compilation, as well as\nsubstantially enhancing functions for machine learning, trees,\nmathematical computations, video and more. This release also includes\nover a thousand bug fixes, documentation enhancements and significant\nperformance improvements.\u0026rdquo;\u003c/p\u003e","title":"New version of Mathematica (13.2.0)"},{"content":"SSH Secure Shell SSH is used to get a secure terminal-connection to a login server. All Linux loginservers can be reached with SSH client software.\nNB: as of December 2022, not all science logins are allowed to login on the login servers anymore. Should you have trouble logging in on our loginservers, please contact postmaster.\nRecommended SSH client software Windows: MobaXterm. From the MobaXterm website: “MobaXterm is an enhanced terminal for Windows with an X11 server, a tabbed SSH client and several other network tools for remote computing (VNC, RDP, telnet, rlogin). MobaXterm brings all the essential Unix commands to Windows desktop, in a single portable exe file which works out of the box.” The support of OpenGL could also be a reason to start using MobaXterm. If you use it professionally, you should consider subscribing to MobaXterm Professional Edition. MobaXterm is available on the S-disc. Mosh (mobile Shell) when roaming and intermittent connections. PuTTY. The OpenSSH client provided by Cygwin. Linux: Your computer should have ssh installed by default. Otherwise, install the openssh-client package. Install Mosh (mobile Shell) when roaming or having intermittent connections. OS X: the ssh client should be available on your Mac. For graphical/X11 functionality one can install XQuartz. Install Mosh (mobile Shell) when roaming or having intermittent connections. Android: JuiceSSH or ConnectBot. Install Mosh (mobile Shell) when roaming or having intermittent connections. Recommended software for filetransfer Windows: MobaXterm or WinSCP Linux: scp OS X and Windows: Cyberduck SSH keys ssh can use login and password to authenticate with the server, but you can also use ssh keys as an alternative authentication method. ssh keys are public-private key pairs that you can generate using the ssh-keygen command on linux. Read the manpage man ssh-keygen to learn more. You can set a password on the private key, to prevent it from being copied and used by someone else to impersonate you.\nSteps:\ngenerate ssh keys: eg ssh-keygen -t ed25519 (press enter a lot, or read the prompts and set a password if you want that). The keypair will end up in ~/.ssh/ on linux machines. (NB in general) copy the public key to the server (use ssh-copy-id \u0026lt;server\u0026gt;), the public key of your keypair will be added to ~/.ssh/authorized_keys (make sure the permissions are strict enough!) (for Lilo login) login to diy and upload your public key where it says \u0026ldquo;add public key\u0026rdquo;. The generic method does not work for lilo! If you set a password on the keypair, you will be prompted every time you use it, or you can configure ssh-agent to remember your key for a limited time. For automated scripts, you need unprotected keypairs, because a script cannot prompt you.\nIt\u0026rsquo;s possible to generate keys with different names, for different uses.\nSSH settings and tips To avoid warnings about possibly changed ssh keys and prevent messages with ‘unkown host’ the first time you connect to a host in the science.ru.nl domain, we have signed the public keys of all our servers. If you add the following lines to the file ‘config’ in the .ssh directory in your (local) home directory (maybe this file has to be created)\nCanonicalDomains science.ru.nl CanonicalizeFallbackLocal no CanonicalizeHostname yes and the following line to .ssh/known_hosts\n@cert-authority *.science.ru.nl ecdsa-sha2-nistp521 AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBAHpJveyOrLKFRDsbiW/29OadbCbkmUaIXnWbhVwtytbpftAc7Stj2RYa8yBmgfdm82T/UBVu1tLbeeCYQI8UlCvbAALMx+I60ux+iEGVdDBgIOjeu6LuY12pksVlXy/nKc59+m3AdMXfGHA8cI/O8eFosQLJ+dck7SBcvTT4lPhEcSQxg== then C\u0026amp;CZ-signed ssh keys of science.ru.nl hosts will be automatically accepted. The change to the ‘config’ file ensures that\nssh lilo\nwill match with lilo.science.ru.nl and the line in known_hosts ensures that only for hostnames matching with *.science.ru.nl ssh will check whether the public key of the host is signed by C\u0026amp;CZ and if that is indeed the case will accept the host key. If you do not want to change the config file then you will always have to use the fully qualified hostname lilo9.science.ru.nl.\nSsh can be used for:\nport forwarding on another host proxying for example web traffic almost complete vpn functionality Please consult this article for some excellent tips on how to use and configure your ssh client.\nPreventing ssh disconnects In case you experience connectivity issues using ssh, use the following settings for your ssh-client. This can be done by adding the following lines to the config file .ssh/config (or /etc/ssh/ssh_config):\nTCPKeepAlive no ServerAliveInterval 60 ServerAliveCountMax 10 ","permalink":"https://cncz.science.ru.nl/howto/ssh/","summary":"\u003ch2 id=\"ssh-secure-shell\"\u003eSSH Secure Shell\u003c/h2\u003e\n\u003cp\u003eSSH is used to get a secure terminal-connection to a login server. All\n\u003ca href=\"/howto/hardware-servers/\"\u003eLinux loginservers\u003c/a\u003e can be reached with SSH\nclient software.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eNB: as of December 2022, not all science logins are allowed to login on the\nlogin servers anymore\u003c/strong\u003e. Should you have trouble logging in on our\nloginservers, \u003ca href=\"/howto/contact/\"\u003eplease contact postmaster\u003c/a\u003e.\u003c/p\u003e\n\u003ch3 id=\"recommended-ssh-client-software\"\u003eRecommended SSH client software\u003c/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWindows:\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"http://mobaxterm.mobatek.net/\" target=\"_blank\"\u003eMobaXterm\u003c/a\u003e. From the MobaXterm\nwebsite: “MobaXterm is an enhanced terminal for Windows with an\nX11 server, a tabbed SSH client and several other network tools\nfor remote computing (VNC, RDP, telnet, rlogin). MobaXterm\nbrings all the essential Unix commands to Windows desktop, in a\nsingle portable exe file which works out of the box.” The\nsupport of OpenGL could also be a reason to start using\nMobaXterm. If you use it professionally, you should consider\nsubscribing to \u003ca href=\"http://mobaxterm.mobatek.net/download.html\" target=\"_blank\"\u003eMobaXterm Professional\nEdition\u003c/a\u003e. MobaXterm\nis available on the \u003ca href=\"/howto/s-schijf/\"\u003eS-disc\u003c/a\u003e.\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://mosh.org/\" target=\"_blank\"\u003eMosh\u003c/a\u003e (mobile Shell) when roaming and\nintermittent connections.\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html\" target=\"_blank\"\u003ePuTTY\u003c/a\u003e.\u003c/li\u003e\n\u003cli\u003eThe OpenSSH client provided by\n\u003ca href=\"https://www.cygwin.com/\" target=\"_blank\"\u003eCygwin\u003c/a\u003e.\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eLinux: Your computer should have ssh installed by default.\nOtherwise, install the openssh-client package. Install\n\u003ca href=\"https://mosh.org/\" target=\"_blank\"\u003eMosh\u003c/a\u003e (mobile Shell) when roaming or having\nintermittent connections.\u003c/li\u003e\n\u003cli\u003eOS X: the ssh client should be available on your Mac. For\ngraphical/X11 functionality one can install\n\u003ca href=\"http://xquartz.macosforge.org\" target=\"_blank\"\u003eXQuartz\u003c/a\u003e. Install\n\u003ca href=\"https://mosh.org/\" target=\"_blank\"\u003eMosh\u003c/a\u003e (mobile Shell) when roaming or having\nintermittent connections.\u003c/li\u003e\n\u003cli\u003eAndroid: \u003ca href=\"https://juicessh.com/\" target=\"_blank\"\u003eJuiceSSH\u003c/a\u003e or\n\u003ca href=\"https://connectbot.org/\" target=\"_blank\"\u003eConnectBot\u003c/a\u003e. Install\n\u003ca href=\"https://mosh.org/\" target=\"_blank\"\u003eMosh\u003c/a\u003e (mobile Shell) when roaming or having\nintermittent connections.\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch3 id=\"recommended-software-for-filetransfer\"\u003eRecommended software for filetransfer\u003c/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWindows: \u003ca href=\"http://mobaxterm.mobatek.net/\" target=\"_blank\"\u003eMobaXterm\u003c/a\u003e or\n\u003ca href=\"https://winscp.net\" target=\"_blank\"\u003eWinSCP\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eLinux: scp\u003c/li\u003e\n\u003cli\u003eOS X and Windows: \u003ca href=\"https://cyberduck.io/\" target=\"_blank\"\u003eCyberduck\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch3 id=\"ssh-keys\"\u003eSSH keys\u003c/h3\u003e\n\u003cp\u003e\u003ccode\u003essh\u003c/code\u003e can use login and password to authenticate with the server, but you can also use ssh keys as an alternative authentication method. ssh keys are public-private \u003cem\u003ekey pairs\u003c/em\u003e that you can generate using the \u003ccode\u003essh-keygen\u003c/code\u003e command on linux. Read the manpage \u003ccode\u003eman ssh-keygen\u003c/code\u003e to learn more. You can set a password on the private key, to prevent it from being copied and used by someone else to impersonate you.\u003c/p\u003e","title":"SSH"},{"content":"Phishing Trying to acquire useful data, ie login credentials, for abusing someone else\u0026rsquo;s ICT infrastructure.\nMethods of phishing In general, phishing works by send a clickable link surrounded by an important message about Salary, payment or a prize, a punishment or fee. This distracts your rational mind and ensures your emotional response controls your mouse-clicking finger.\nTip\nAlways check the link (URL) on which you click (or not) if it is a known address. For instance, one ending with .ru.nl.\nurl safe/unsafe https://mail.ru.nl/ safe https://mail-ru-nl.blatherbeastoftraal.in/ unsafe https://webmail.science.ru.nl/ safe https://scienceroundcube.lukewarmmail.com/ unsafe https://roundcube.pages.science.ru.nl/ ??? Better safe than sorry, the last one could be an inside attacker!\nThe page you end up on looks like something you are used to login with your credentials and when you enter them, the site records the credentials and they can later be used to login to IT systems owned by us, and abuse them.\nThe leaked credentials are formally speaking a dataleak and this must be reported immediately to the ICT department!\nConsequenses of succesful phishing Using a valid login gives the attacker access to all the rightful owner of the credentials is allowed to do on the IT systems. Considering that the attacker is usually not inside the RU, attacking the infrastructure for external use is the first thing that happens.\nConsequenses for the Radboud University IT departments must contain the damage, so blocking accounts, reducing functionality, temporarily of permanently. Red tape must be produced in large quantities for administering the data leak Damage of reputation caused by abuse of e-mail infrastructure, causing problems for all Radboud e-mail users. In case of ransomware, loss of data and work, because older backups need to be restored (time!) And worse things\u0026hellip; Consequenses for the owner of leaked credentials The account (or multiple accounts!) will be blocked new password(s) need to be set possible loss of data (because the attacker may have had access to the owners data) lots of undeliverable messages, also for others whose e-mail addresses were abused as sender, but not leaked. Special case; spearphishing Spearphishing is a more precise attack to trap a specific, named, person. Usually this is done to people who are higher up the hierarchy in an organisation, making success more valuable to the attacker.\nA frequently used scam is one where a supervisor seems to ask one of his/her phd\u0026rsquo;s or employees: \u0026ldquo;I\u0026rsquo;m in a meeting, I need a few vouchers ASAP, can you purchase and send them to me please!\u0026rdquo; (Or a variation on this theme)\nTip\nCheck the sending address very carefully, check the e-mail headers if you have to. Usually it should be quite obvious that the e-mail address is not the one used usually by the person you thought it was from.\n","permalink":"https://cncz.science.ru.nl/howto/know-about-phishing/","summary":"\u003ch1 id=\"phishing\"\u003ePhishing\u003c/h1\u003e\n\u003cp\u003eTrying to acquire useful data, ie login credentials, for abusing someone else\u0026rsquo;s ICT infrastructure.\u003c/p\u003e\n\u003ch2 id=\"methods-of-phishing\"\u003eMethods of phishing\u003c/h2\u003e\n\u003cp\u003eIn general, phishing works by send a clickable link surrounded by an important message about Salary, payment or a prize, a punishment or fee. This distracts your rational mind and ensures your emotional response controls your mouse-clicking finger.\u003c/p\u003e\n\u003cdiv\u003e\u003csvg width=\"0\" height=\"0\" display=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003csymbol id=\"tip-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.967-111.033 248-248 248S8 392.967 8 256 119.033 8 256 8s248 111.033 248 248zM227.314 387.314l184-184c6.248-6.248 6.248-16.379 0-22.627l-22.627-22.627c-6.248-6.249-16.379-6.249-22.628 0L216 308.118l-70.059-70.059c-6.248-6.248-16.379-6.248-22.628 0l-22.627 22.627c-6.248 6.248-6.248 16.379 0 22.627l104 104c6.249 6.249 16.379 6.249 22.628.001z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"note-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"warning-notice\" viewBox=\"0 0 576 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"info-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 110c23.196 0 42 18.804 42 42s-18.804 42-42 42-42-18.804-42-42 18.804-42 42-42zm56 254c0 6.627-5.373 12-12 12h-88c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h12v-64h-12c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h64c6.627 0 12 5.373 12 12v100h12c6.627 0 12 5.373 12 12v24z\"/\u003e\u003c/symbol\u003e\u003c/svg\u003e\u003c/div\u003e\u003cdiv class=\"notice tip\" \u003e\n\u003cp class=\"first notice-title\"\u003e\u003cspan class=\"icon-notice baseline\"\u003e\u003csvg\u003e\u003cuse href=\"#tip-notice\"\u003e\u003c/use\u003e\u003c/svg\u003e\u003c/span\u003eTip\u003c/p\u003e","title":"About Phishing via e-mail"},{"content":"Unfortunately, we have recently seen a strong increase in successful phishing attempts in the Science domain, a mailing about this issue was already sent last week.\nAt the same time, we worked hard in collaboration with ILS to also deploy the centrally used anti-phishing tooling from Proofpoint for FNWI. The central RU mail environment has been supplemented with this highly effective anti-phishing measure for some time now.\nAs soon as the Science mail domains are also placed \u0026lsquo;behind\u0026rsquo; this anti-phishing tool, things will change for users who have not yet had to deal with this. More information can be found on https://www.ru.nl/ict/algemeen/proofpoint/.\nAn important difference for users who do not use a device managed by ILS, is that there is no \u0026ldquo;report phishing\u0026rdquo; button in the mail client to report phishing yourself. If you receive a phishing email that is not already blocked by Proofpoint, we would like to ask you to report this to C\u0026amp;CZ.\nFurthermore, any links (URLs) present in the received mail will be rewritten and there is a user portal in which mail blocked by Proofpoint can be seen that has been placed in quarantine. Many options are available in this portal, such as releasing mail and allowing or blocking senders. The C\u0026amp;CZ helpdesk can also support you with this if you have any questions about this.\nAt the moment, there\u0026rsquo;s no way for individual users to opt-out for Proofpoint for their RU or Science mail address.\nWe assume that this measure will lead to us becoming less vulnerable to phishing Science logins and thus improving information security. If this leads to questions or problems in the handling of mail, we would of course like to hear this.\nThank you in advance for your understanding.\n","permalink":"https://cncz.science.ru.nl/news/2022-12-16_implementation-proofpoint-for-science-mail/","summary":"\u003cp\u003eUnfortunately, we have recently seen a strong increase in successful \u003ca href=\"/howto/know-about-phishing\"\u003ephishing\u003c/a\u003e attempts in the Science domain, a mailing about this issue was already sent last week.\u003c/p\u003e\n\u003cp\u003eAt the same time, we worked hard in collaboration with ILS to also deploy the centrally used anti-phishing tooling from Proofpoint for FNWI. The central RU mail environment has been supplemented with this highly effective anti-phishing measure for some time now.\u003c/p\u003e\n\u003cp\u003eAs soon as the Science mail domains are also placed \u0026lsquo;behind\u0026rsquo; this anti-phishing tool, things will change for users who have not yet had to deal with this. More information can be found on \u003ca href=\"https://www.ru.nl/ict/algemeen/proofpoint/\" target=\"_blank\"\u003ehttps://www.ru.nl/ict/algemeen/proofpoint/\u003c/a\u003e.\u003c/p\u003e","title":"Implementation Proofpoint for Science mail"},{"content":"After a disk was replaced of a vmhost, a reboot was needed to actually see the disk. Unfortunately, this did not help. A second try, with another disk worked and the machine is rebuilding the RAID.\n","permalink":"https://cncz.science.ru.nl/cpk/1309/","summary":"\u003cp\u003eAfter a disk was replaced of a vmhost, a reboot was needed to actually see the disk. Unfortunately, this did not help. A second try, with another disk worked and the machine is rebuilding the RAID.\u003c/p\u003e","title":"Unplanned reboot of vmhost"},{"content":"Last week we have seen a strong increase in phishing attempts targeting the Science domain. It is notable that these attempts use well-constructed Science environments such as Roundcube that are difficult to distinguish from the real environment. The phishing email often contains something about salary or a payment, which means that it is clicked a lot. C\u0026amp;CZ is doing everything it can to limit the nuisance as much as possible by blocking these phishing emails as much as possible.\nWe would like to ask you to be extra alert to e-mails and especially not to click on URL\u0026rsquo;s asking you to enter your credentials for a salary payment, another payment, an account reset, etc. These are e-mails that are generally never sent by our departments. In the unlikely event that you have logged in somewhere that you later have doubts about, please report this as soon as possible to C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2022-12-15_many-phishing-attempts-in-the-last-week/","summary":"\u003cp\u003eLast week we have seen a strong increase in \u003ca href=\"/howto/know-about-phishing/\"\u003ephishing\u003c/a\u003e attempts targeting the Science domain. It is notable that these attempts use well-constructed Science environments such as Roundcube that are difficult to distinguish from the real environment. The phishing email often contains something about salary or a payment, which means that it is clicked a lot. C\u0026amp;CZ is doing everything it can to limit the nuisance as much as possible by blocking these phishing emails as much as possible.\u003c/p\u003e","title":"Many phishing attempts in the last week"},{"content":"Recently, some Science accounts were hacked, after users fell for a phishing mail. These accounts were subsequently abused by internet criminals to send mails from our Linux loginservers. Therefore, we have removed the ability to login on these login servers for all Science accounts that didn\u0026rsquo;t use these servers anyway. Please contact C\u0026amp;CZ if you want to be able to login to the Linux login servers.\n","permalink":"https://cncz.science.ru.nl/cpk/1308/","summary":"\u003cp\u003eRecently, some Science accounts were hacked, after users fell for\na phishing mail. These accounts were subsequently abused by internet\ncriminals to send mails from our \u003ca href=\"/howto/ardware-servers/#linux-loginservers\"\u003eLinux loginservers\u003c/a\u003e.\nTherefore, we have removed the ability to login on these login servers for all\nScience accounts that didn\u0026rsquo;t use these servers anyway. Please\n\u003ca href=\"/howto/contact/\"\u003econtact\u003c/a\u003e C\u0026amp;CZ if you want to be able to login to the Linux login servers.\u003c/p\u003e","title":"Accounts on Linux login servers restricted to recent users"},{"content":"To deal with the ongoing abuse of science accounts for spam, we have disabled the possibility to send e-mail from the linux login servers. This means that the lilos cannot be used anymore to run mutt/alpine or as socksproxy for mail clients.\nFor users with cronjobs, note that cronjobs cannot send output via e-mail anymore. Please change your cronjobs to provide feedback in a different way or discuss an alternative solution with postmaster.\nWe expect this to be a permanent measure, at least for as long as we don\u0026rsquo;t have a multi-factor login on ssh login.\nUpdate, sending e-mail is possible again, because lilo\u0026rsquo;s are not the only way to abuse login credentials.\n","permalink":"https://cncz.science.ru.nl/cpk/1307/","summary":"\u003cp\u003eTo deal with the ongoing abuse of science accounts for spam, we have disabled the possibility to send e-mail from the \u003ca href=\"/howto/hardware-servers/#linux-loginservers\"\u003elinux login servers\u003c/a\u003e. This means that the lilos cannot be used anymore to run mutt/alpine or as socksproxy for mail clients.\u003c/p\u003e\n\u003cp\u003eFor users with cronjobs, note that cronjobs cannot send output via e-mail anymore. Please change your cronjobs to provide feedback in a different way or discuss an alternative solution with \u003ca href=\"/howto/contact\"\u003epostmaster\u003c/a\u003e.\u003c/p\u003e","title":"Sending E-mail from lilo blocked"},{"content":"After several persons fell for a phishing email, several tens of thousands of emails were sent via Science accounts. This causes our mail servers to be blocked by several mail servers on the internet. We are currently cleaning SPAM mails that are still in the outgoing queues. After that, the mail servers will be made available again. We are considering measures to prevent this form of nuisance.\n","permalink":"https://cncz.science.ru.nl/cpk/1306/","summary":"\u003cp\u003eAfter several persons fell for a phishing email, several tens of thousands of emails were sent via Science accounts. This causes our mail servers to be blocked by several mail servers on the internet.\nWe are currently cleaning SPAM mails that are still in the outgoing queues. After that, the mail servers will be made available again.\nWe are considering measures to prevent this form of nuisance.\u003c/p\u003e","title":"Outgoing mail not possible after successful phishing attack"},{"content":"The C\u0026amp;CZ administered “4 concurrent user” license for Maple has been continued until December 31, 2023. The latest version of Maple, Maple2022.2, for Windows/macOS/Linux can be found on the Install network share and has been installed on C\u0026amp;CZ managed Linux computers. License codes can be requested from C\u0026amp;CZ helpdesk or postmaster.\n","permalink":"https://cncz.science.ru.nl/news/2022-12-02_maple-new-version-maple2022-2-and-license-continued/","summary":"\u003cp\u003eThe C\u0026amp;CZ administered “4 concurrent user” license for Maple has been\ncontinued until December 31, 2023. The latest version of\n\u003ca href=\"/howto/maple/\"\u003eMaple\u003c/a\u003e, Maple2022.2, for Windows/macOS/Linux can be\nfound on the \u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e network share and has\nbeen installed on C\u0026amp;CZ managed Linux computers. License codes can be\nrequested from C\u0026amp;CZ helpdesk or postmaster.\u003c/p\u003e","title":"Maple new version: Maple2022.2 and license continued"},{"content":"Jitsi was unavailable after the reboot, because one of the web-interface configurations was still referring to an older certiticate.\n","permalink":"https://cncz.science.ru.nl/cpk/1305/","summary":"\u003cp\u003e\u003ca href=\"https://jitsivm.science.ru.nl\" target=\"_blank\"\u003eJitsi\u003c/a\u003e was unavailable after the reboot, because one of the web-interface configurations was still referring to an older certiticate.\u003c/p\u003e","title":"Jitsi certificate mismatch"},{"content":"The certificate for jitsi.science.ru.nl expired last week and was replaced, but a sub-service was still using a copy of the older certificate. Users were able to open the frontend, but not able to start a meeting. The problem was resolved by updating the copy of the sub-service.\n","permalink":"https://cncz.science.ru.nl/cpk/1304/","summary":"\u003cp\u003eThe certificate for jitsi.science.ru.nl expired last week and was replaced, but a sub-service was still using a copy of the older certificate. Users were able to open the frontend, but not able to start a meeting. The problem was resolved by updating the copy of the sub-service.\u003c/p\u003e","title":"Jitsi certificate expired"},{"content":"From now on it is possible to manage Science accounts under your control in DIY. The overview of Science accounts for which you are the contact can be found in the menu \u0026ldquo;My accounts\u0026rdquo;.\nEach of these accounts has a link to a form where you can perform one of the following actions:\nPostpone the check date. This date is used to send reminder emails. Block the account. Blocked accounts cannot be used to login into systems (like mail, login server, gitlab). Delete the account. If you delete an account, the account will be blocked immediately and will be deleted a month later. If the check date of a Science account has passed, a reminder email will be sent inviting you to indicate in DIY what to do with the account. In most cases it is therefore no longer necessary to send a reply to this e-mail.\n","permalink":"https://cncz.science.ru.nl/news/2022-11-15_manage-science-accounts-in-dhz/","summary":"\u003cp\u003eFrom now on it is possible to manage \u003ca href=\"../../howto/login\"\u003eScience accounts\u003c/a\u003e under your control in \u003ca href=\"https://diy.science.ru.nl\" target=\"_blank\"\u003eDIY\u003c/a\u003e. The overview of Science accounts for which you are the contact can be found in the menu \u0026ldquo;My accounts\u0026rdquo;.\u003c/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" src=\"/img/2022/my-accounts.png\" alt=\"my accounts screenshot\" /\u003e\n\u003c/p\u003e\n\u003cp\u003eEach of these accounts has a link to a form where you can perform one of the following actions:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003ePostpone the check date. This date is used to send reminder emails.\u003c/li\u003e\n\u003cli\u003eBlock the account. Blocked accounts cannot be used to login into systems (like mail, login server, gitlab).\u003c/li\u003e\n\u003cli\u003eDelete the account. If you delete an account, the account will be blocked immediately and will be deleted a month later.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eIf the check date of a Science account has passed, a \u003ca href=\"../../howto/emailcodes/#diy-1\"\u003ereminder email\u003c/a\u003e will be sent inviting you to indicate in DIY what to do with the account. In most cases it is therefore no longer necessary to send a reply to this e-mail.\u003c/p\u003e","title":"Manage science accounts via DIY"},{"content":"OriginLab Origin by Originlab is scientific graphing and data analysis software.\nLicense C\u0026amp;CZ acquired a network license for FNWI for the use of OriginPro. One can get the software and installation/licensing keys of OriginPro from C\u0026amp;CZ system administration.\nThe network license can only be used by computers on the Internet. For standalone use, there are home-use licenses included. The current support contract ends August 2026.\nIf you get a message that the license will expire soon and you are using a standalone version you can update the license by clicking on Activate in the Help menu.\nThe use of OriginPro is logged on the license server. OriginPro is available on the MS-Windows machines managed by C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/howto/originlab/","summary":"\u003ch3 id=\"originlab\"\u003eOriginLab\u003c/h3\u003e\n\u003cp\u003eOrigin by \u003ca href=\"http://www.originlab.com/\" target=\"_blank\"\u003eOriginlab\u003c/a\u003e is scientific graphing\nand data analysis software.\u003c/p\u003e\n\u003ch3 id=\"license\"\u003eLicense\u003c/h3\u003e\n\u003cp\u003eC\u0026amp;CZ acquired a network license for FNWI for the use of OriginPro. One\ncan get the software and installation/licensing keys of OriginPro from\n\u003ca href=\"/howto/systeemontwikkeling/\"\u003eC\u0026amp;CZ system administration\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eThe network license can only be used by computers on the Internet. For\nstandalone use, there are home-use licenses included. The current\nsupport contract ends August 2026.\u003c/p\u003e\n\u003cp\u003eIf you get a message that the license will expire soon and you are using\na standalone version you can update the license by clicking on Activate\nin the Help menu.\u003c/p\u003e","title":"OriginLab"},{"content":"System Development and Administration System development and administration is located in room HG00.545.\nWho are they? Remco Aalbers Bram Daams Miek Gieben Alexander Greefhorst Wim Janssen Eric Lieffers Simon Oosthoek Ben Polman Arnoud Thörig Erik Visser What do they do? System Administration takes care of\nManagement of the servers of the faculty and of various departments. Back-up and restore of the data on the servers. Management of workstations in the departments and in the computer labs and publicly available workstations: Managed PC’s with MS-Windows and/or Ubuntu Linux. For all other computers (hundreds of MS-Windows PCs and tens of Linux PCs and MACs, not managed by C\u0026amp;CZ) it is understood that the owner (department) takes care of the systems management. For these systems, C\u0026amp;CZ system administration can try to answer questions.\nSupport for education renewal and digital provision of information. Internet address administration (nameserver, DNS/DHCP) for the Faculty of Science. ","permalink":"https://cncz.science.ru.nl/howto/systeemontwikkeling/","summary":"\u003ch2 id=\"system-development-and-administration\"\u003eSystem Development and Administration\u003c/h2\u003e\n\u003cp\u003eSystem development and administration is located in room HG00.545.\u003c/p\u003e\n\u003ch2 id=\"who-are-they\"\u003eWho are they?\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n \u003ca href=\"https://www.ru.nl/personen/aalbers-p\"\u003eRemco Aalbers\u003c/a\u003e\n\u003cbr\u003e\n\n \u003ca href=\"https://www.ru.nl/personen/daams-b\"\u003eBram Daams\u003c/a\u003e\n\u003cbr\u003e\n\n \u003ca href=\"https://www.ru.nl/personen/gieben-r\"\u003eMiek Gieben\u003c/a\u003e\n\u003cbr\u003e\n\n \u003ca href=\"https://www.radboudnet.nl/personen/greefhorst-a\"\u003eAlexander Greefhorst\u003c/a\u003e\n\u003cbr\u003e\n\n \u003ca href=\"https://www.ru.nl/personen/janssen-w\"\u003eWim Janssen\u003c/a\u003e\n\u003cbr\u003e\n\n \u003ca href=\"https://www.ru.nl/personen/lieffers-h\"\u003eEric Lieffers\u003c/a\u003e\n\u003cbr\u003e\n\n \u003ca href=\"https://www.ru.nl/personen/oosthoek-s\"\u003eSimon Oosthoek\u003c/a\u003e\n\u003cbr\u003e\n\n \u003ca href=\"https://www.ru.nl/personen/polman-b\"\u003eBen Polman\u003c/a\u003e\n\u003cbr\u003e\n\n \u003ca href=\"https://www.radboudnet.nl/personen/thorig-a\"\u003eArnoud Thörig\u003c/a\u003e\n\u003cbr\u003e\n\n \u003ca href=\"https://www.ru.nl/personen/visser-e-j-erik\"\u003eErik Visser\u003c/a\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch2 id=\"what-do-they-do\"\u003eWhat do they do?\u003c/h2\u003e\n\u003cp\u003eSystem Administration takes care of\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eManagement of the \u003ca href=\"/howto/hardware-servers/\"\u003eservers of the faculty and of various departments\u003c/a\u003e.\u003c/li\u003e\n\u003cli\u003eBack-up and restore of the data on the servers.\u003c/li\u003e\n\u003cli\u003eManagement of workstations in the departments and in the \u003ca href=\"/howto/terminalkamers/\"\u003ecomputer labs and publicly available workstations\u003c/a\u003e:\nManaged PC’s with MS-Windows and/or Ubuntu Linux.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eFor all other computers (hundreds of MS-Windows PCs and tens of Linux\nPCs and MACs, not managed by C\u0026amp;CZ) it is understood that the owner\n(department) takes care of the systems management. For these systems,\nC\u0026amp;CZ system administration can try to answer questions.\u003c/p\u003e","title":"System Development"},{"content":"Since midnight there is a problem using Adobe Acrobat Pro DC, you are asked to activate the license. ILS is working on a solution. You can open PDFs using Adobe Reader or some other PDF reader. See: https://meldingen.ru.nl/detail.php?id=1333\u0026lang=en\u0026tg=0\u0026f=0\u0026ii for the original notice.\n","permalink":"https://cncz.science.ru.nl/cpk/1303/","summary":"\u003cp\u003eSince midnight there is a problem using Adobe Acrobat Pro DC, you are asked\nto activate the license. ILS is working on a solution.\nYou can open PDFs using Adobe Reader or some other PDF reader. See: \u003ca href=\"https://meldingen.ru.nl/detail.php?id=1333\u0026amp;lang=en\u0026amp;tg=0\u0026amp;f=0\u0026amp;ii\" target=\"_blank\"\u003ehttps://meldingen.ru.nl/detail.php?id=1333\u0026lang=en\u0026tg=0\u0026f=0\u0026ii\u003c/a\u003e for the original notice.\u003c/p\u003e","title":"Adobe Acrobat Pro DC license problem"},{"content":"Using X applications from your Windows PC MobaXterm is software which is available on the S-disc. From the MobaXterm website: “MobaXterm is an enhanced terminal for Windows with an X11 server, a tabbed SSH client and several other network tools for remote computing (VNC, RDP, telnet, rlogin). MobaXterm brings all the essential Unix commands to Windows desktop, in a single portable exe file which works out of the box.” The support of OpenGL could also be a reason to start using MobaXterm. If you use it professionally, you should consider subscribing to [MobaXterm Professional Edition.\n","permalink":"https://cncz.science.ru.nl/howto/mobaxterm/","summary":"\u003ch2 id=\"using-x-applications-from-your-windows-pc\"\u003eUsing X applications from your Windows PC\u003c/h2\u003e\n\u003cp\u003e\u003ca href=\"http://mobaxterm.mobatek.net/\" target=\"_blank\"\u003eMobaXterm\u003c/a\u003e is software which is available on the\n\u003ca href=\"/howto/s-schijf/\"\u003eS-disc\u003c/a\u003e. From the MobaXterm website: “MobaXterm is\nan enhanced terminal for Windows with an X11 server, a tabbed SSH client\nand several other network tools for remote computing (VNC, RDP, telnet,\nrlogin). MobaXterm brings all the essential Unix commands to Windows\ndesktop, in a single portable exe file which works out of the box.” The\nsupport of OpenGL could also be a reason to start using MobaXterm. If\nyou use it professionally, you should consider subscribing to\n[\u003ca href=\"http://mobaxterm.mobatek.net/download.html\" target=\"_blank\"\u003eMobaXterm Professional\nEdition\u003c/a\u003e.\u003c/p\u003e","title":"X on Windows"},{"content":"Just before 23:09 quite a lot of ceph storage nodes became unreachable. This seems to be due to one of the redundant links between two datacenter locations failing for about 4 seconds. This triggered a whole slew of ceph osd processes being killed off and not starting again. A generic configuration change made for all our servers generated an extra interface, which confused some of the osd processes (depending on interface ordering) when starting up. We are reasonably confident we can avoid this from happening in the future.\nCeph storage automatically disables writing and even reading when not enough storage units are available, the data is still safe.\nSome of our websites depend on the Ceph storage, like sites on gitlab pages and our ftp.science.ru.nl. The storage unavailability also led to a high load on the webserver, so other sites may have been affected as well.\n","permalink":"https://cncz.science.ru.nl/cpk/1302/","summary":"\u003cp\u003eJust before 23:09 quite a lot of ceph storage nodes became unreachable. This seems to be due to one of the redundant links between two datacenter locations failing for about 4 seconds. This triggered a whole slew of ceph osd processes being killed off and not starting again. A generic configuration change made for all our servers generated an extra interface, which confused some of the osd processes (depending on interface ordering) when starting up. We are reasonably confident we can avoid this from happening in the future.\u003c/p\u003e","title":"Ceph storage interruption"},{"content":"Often people want to share data, choosing the right method can be complex.\nThis page hopes to help you choose the right solution.\nOptions:\nhttps (previously ftp) e-mail surfdrive surf filesender physical transfer custom solution Microsoft Teams Situations:\none to few people one to many people share with public co-authoring moving datasets between institutions GDPR (Dutch: AVG) Whenever you are sharing documents or files, be aware that restrictions apply when sharing personal information and all involved parties must explicitly accept responsibility for keeping within the legal boundaries.\nWarning\nDo NOT use we-transfer, it is entirely unclear where the data is stored.\nOne to few people With small data (up to a few megabytes) , e-mail attachments are often the easiest, but sometimes e-mail filters will get in the way, for example zip files, executables, or even some document formats are routinely blocked to prevent spreading of malware. A good way around that is surf filesender or surfdrive or Microsoft Teams. Within the faculty, you can use shared storage to share documents within a group.\nA usb-stick in a physical envelope (with encrypted data on it) can even be used, but this is often too much work.\none to many people If you want to send a file or dataset to a lot of people, but not make it public, there\u0026rsquo;s no clear solution that stands out. The solution also depends on how private the data is within the group, if it contains data that must remain within the group, encryption is probably a requirement. Systems where the group is know (unix groups, teams, etc.) which allow storing files are usually the best place to use for sharing within the group.\nmake data publicly available For data or files that you want to share with the public, it should be downloadable using a web-link (https://....), we have several ways to make data available like this, either by making a website or adding a web sharing tool to a shared volume. For publications there the Radboud Data Repository (RDR).\nco-authoring documents Another concept of sharing is shared editing, where two or more people can edit documents at the same time or at least have edit access to the documents.\nA document on a shared filesystem can be sufficient, but this is not suitable for parallel editing, because the file sharing has no knowledge about the tool being used to edit.\nShared editing exists on many platforms, like Microsoft Teams, google docs, overleaf (for LaTeX documents), all of these tools require a login and/or a license and may or may not be acceptable within your organisation.\nmoving large datasets Sometimes, when a lot of data must be copied or moved from one physical location to another, it can take a long time to transfer over a network. It may be faster to move a physical disk, or server to the other location. If the only copy is being physically moved, this may be undesirable.\nIf time is not critical, a multi-terabyte transfer can be done over the network, but then the rsync tool is recommended, since interruptions can be efficiently dealt with.\nNote about Surf Filesender We have installed the commandline tool for surf filesender on lilo and clusternodes, all you need to do is download your configuration and set it up in your homedirectory. For this you need to login to Surf Filesender and download the configuration from there to your homedirectory/.filesender/ and then use the command filesender.py with the correct options to easily send a file or directory from the linux commandline.\nsetting up data sharing If you have questions about how to do it or if you need our help, feel free to ask.\n","permalink":"https://cncz.science.ru.nl/howto/data-sharing/","summary":"\u003cp\u003eOften people want to share data, choosing the right method can be complex.\u003c/p\u003e\n\u003cp\u003eThis page hopes to help you choose the right solution.\u003c/p\u003e\n\u003cp\u003eOptions:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003ehttps (previously ftp)\u003c/li\u003e\n\u003cli\u003ee-mail\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.surf.nl/en/services/storage-data-management/surfdrive\" target=\"_blank\"\u003esurfdrive\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://filesender.surf.nl/\" target=\"_blank\"\u003esurf filesender\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003ephysical transfer\u003c/li\u003e\n\u003cli\u003ecustom solution\u003c/li\u003e\n\u003cli\u003eMicrosoft Teams\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eSituations:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eone to few people\u003c/li\u003e\n\u003cli\u003eone to many people\u003c/li\u003e\n\u003cli\u003eshare with public\u003c/li\u003e\n\u003cli\u003eco-authoring\u003c/li\u003e\n\u003cli\u003emoving datasets between institutions\u003c/li\u003e\n\u003c/ul\u003e\n\u003chr\u003e\n\u003ch2 id=\"gdpr-dutch-avg\"\u003eGDPR (Dutch: AVG)\u003c/h2\u003e\n\u003cp\u003eWhenever you are sharing documents or files, be aware that restrictions apply when sharing personal information and all involved parties must explicitly accept responsibility for keeping within the legal boundaries.\u003c/p\u003e","title":"Data sharing"},{"content":"For the majority of the services C\u0026amp;CZ uses free software and open source software. Therefore, some time ago C\u0026amp;CZ decided that each year the employees vote which projects receive a donation from C\u0026amp;CZ. This year Project Jupyter was chosen as new recipient. Project Jupyter is a non-profit, open-source project, born out of the IPython Project in 2014 as it evolved to support interactive data science and scientific computing across all programming languages. C\u0026amp;CZ makes use of it in the JupyterHub for FNWI courses. As a second recipient Mozilla Foundation was chosen, just like in 2021. Many people will know the Mozilla Firefox webbrowser and the mailclient Mozilla Thunderbird and maybe use it hours a day. But the Mozilla Foundation does a lot more to try to ensure the internet remains a public resource that is open and accessible to us all.\n","permalink":"https://cncz.science.ru.nl/news/2022-10-21_donation-to-free-and-open-source-software-project-jupyter-and-mozilla/","summary":"\u003cp\u003eFor the majority of the services C\u0026amp;CZ uses \u003ca href=\"https://en.wikipedia.org/wiki/Free_software\" target=\"_blank\"\u003efree\nsoftware\u003c/a\u003e and \u003ca href=\"https://en.wikipedia.org/wiki/Open-source_software\" target=\"_blank\"\u003eopen source\nsoftware\u003c/a\u003e.\nTherefore, some time ago C\u0026amp;CZ decided that each year the employees\nvote which projects receive a donation from C\u0026amp;CZ. This\nyear \u003ca href=\"https://jupyter.org/about\" target=\"_blank\"\u003eProject Jupyter\u003c/a\u003e was chosen as new recipient.\nProject Jupyter is a non-profit, open-source project, born out of the IPython Project in 2014 as it\nevolved to support interactive data science and scientific computing across all programming\nlanguages. C\u0026amp;CZ makes use of it in the \u003ca href=\"https://cncz.science.ru.nl/nl/howto/jupyterhub/\" target=\"_blank\"\u003eJupyterHub\u003c/a\u003e for FNWI courses.\nAs a second recipient \u003ca href=\"https://foundation.mozilla.org/\" target=\"_blank\"\u003eMozilla Foundation\u003c/a\u003e was\nchosen, just like in 2021. Many people will know \u003ca href=\"https://en.wikipedia.org/wiki/Firefox\" target=\"_blank\"\u003ethe Mozilla\nFirefox\u003c/a\u003e webbrowser and the\nmailclient \u003ca href=\"https://en.wikipedia.org/wiki/Mozilla_Thunderbird\" target=\"_blank\"\u003eMozilla\nThunderbird\u003c/a\u003e and\nmaybe use it hours a day. But \u003ca href=\"https://foundation.mozilla.org/en/what-we-do/\" target=\"_blank\"\u003ethe Mozilla Foundation does a lot\nmore\u003c/a\u003e to try to ensure\nthe internet remains a public resource that is open and accessible to us\nall.\u003c/p\u003e","title":"Donation to free and open source software: Project Jupyter and Mozilla"},{"content":"ILS wifi management notified us that they will upgrade the software of wireless access points, because security flaws have been addressed in the latest release.\nThe maintenance ends on 2022-10-21 01:30.\nSource: meldingen.ru.nl\n","permalink":"https://cncz.science.ru.nl/cpk/1301/","summary":"\u003cp\u003eILS wifi management notified us that they will upgrade the software of wireless access points,\nbecause security flaws have been addressed in the latest release.\u003c/p\u003e\n\u003cp\u003eThe maintenance ends on 2022-10-21 01:30.\u003c/p\u003e\n\u003cp\u003eSource: \u003ca href=\"https://meldingen.ru.nl/detail.php?id=1330\u0026amp;lang=en\u0026amp;tg=0\u0026amp;f=0\u0026amp;ii\" target=\"_blank\"\u003emeldingen.ru.nl\u003c/a\u003e\u003c/p\u003e","title":"Eduroam wifi down during upgrade"},{"content":"Availability of Elab software ElabFTW ElabFTW\nChemotion TODO\n","permalink":"https://cncz.science.ru.nl/howto/electronic-lab-journals/","summary":"\u003ch1 id=\"availability-of-elab-software\"\u003eAvailability of Elab software\u003c/h1\u003e\n\u003ch2 id=\"elabftw\"\u003eElabFTW\u003c/h2\u003e\n\u003cp\u003e\u003ca href=\"https://elabftw.science.ru.nl/\" target=\"_blank\"\u003eElabFTW\u003c/a\u003e\u003c/p\u003e\n\u003ch2 id=\"chemotion\"\u003eChemotion\u003c/h2\u003e\n\u003cp\u003eTODO\u003c/p\u003e\n\u003ch2\u003e\u003c/h2\u003e","title":"Electronic Lab Journals"},{"content":"Mailing lists Mailman lists are highly configurable and moderatable mailman mailing lists, e.g. the list of FNWI-employees or the list of FNWI-students. Usually one can add oneself to or remove oneself from such a mailman mailing list. Every mailman mailing list has a moderator, who can approve or reject messages to the mailman mailing list. For mailman list admins: To filter spam one can choose in the Privacy options... under Spam filters as Spam filter regexp:\nX-Spam-Score:.*\\*\\*\\*\\*\\* and check the radio button Discard and hit Submit Your Changes on the bottom of the web page.\nMoreover it is advisable to accept only messages from members (moderated or unmoderated) and a specified list of addresses to accept and discard all other messages.This makes life for the moderator a lot easier. You can achieve this by clicking on Privacy Options ... subsequently click on Sender filters and then for Action to take for postings from non-members for which no explicit action is defined. choose Discard and a bit further down Should messages from non-members, which are automatically discarded, be forwarded to the list moderator? choose No and finally click on Submit Your Changes.\n","permalink":"https://cncz.science.ru.nl/howto/mailman-lists/","summary":"\u003ch2 id=\"mailing-lists\"\u003eMailing lists\u003c/h2\u003e\n\u003cp\u003eMailman lists are highly configurable and moderatable \u003ca href=\"http://mailman.science.ru.nl/\" target=\"_blank\"\u003emailman mailing lists\u003c/a\u003e, e.g. the list of \u003ca href=\"http://mailman.science.ru.nl/mailman/listinfo/fnwi-medewerkers\" target=\"_blank\"\u003eFNWI-employees\u003c/a\u003e or the list of \u003ca href=\"http://mailman.science.ru.nl/mailman/listinfo/fnwi-studenten\" target=\"_blank\"\u003eFNWI-students\u003c/a\u003e. Usually one can add oneself to or remove oneself from such a mailman mailing list. Every mailman mailing list has a moderator, who can approve or reject messages to the mailman mailing list. For mailman list admins: To filter spam one can choose in the \u003ccode\u003ePrivacy options...\u003c/code\u003e under \u003ccode\u003eSpam filters\u003c/code\u003e as \u003ccode\u003eSpam filter regexp:\u003c/code\u003e\u003c/p\u003e","title":"Mailman lists"},{"content":" Tip\nWebmail For quick access to your email, use our webmailer:\nhttps://roundcube.science.ru.nl/ When Roundcube asks for an OTP code, use the one from the OTP app you enrolled in DIY.\nEmail settings When setting up your e-mail programs, it is sufficient to only enter your e-mail address. This is what your Science email address looks like:\nI.Lastname@science.ru.nl\nAll technical settings are then automatically filled in for you. If that does not work, or if it is necessary to fill in the details yourself, use the settings in the table below:\nIncoming email item setting description mailprotocol IMAP With this protocol, your mail is stored on the mail server. server name post.science.ru.nl The server for reading your email. This is where your mail folders live. port 993 encryption SSL/TLS This encryption is used in the communication of your email program and the mail server. user name scienceloginname Use your Science account. Outgoing email item setting description servername smtp.science.ru.nl This server is used for sending email. port 587 encryption STARTTLS user name scienceloginnaam Use your Science account. Address book item setting addressbook server ldap.science.ru.nl port 389 basedn DN: o=addressbook Science mail features Consult the DHZ page for settings regarding your email.\nC\u0026amp;CZ uses open protocols for email. This means that you can check mail with a program of your own preference. A simple antivirus- and antispam-filter is applied to every mail message upon arrival. Mailboxes can be shared between users. Also labels for mail can be shared with other users. Using Sieve mail messages can be filtered on the server. There are two options for setting up mailing lists: address-lists and mailman. Address-lists containing external addresses are not recommended anymore, because of antispam measures taken at the external organisation. Automatically forwarding mail by employees and students to external addresses is not allowed for security reasons since August 2023. The storage space for your mail is 5 GB by default. This can be expanded on request. Tip\nThe \u0026ldquo;sent\u0026rdquo; mail folder is often overlooked when cleaning up email. Search this folder for the mails with the largest attachments.\nAddress lists Mail sent to mailing lists is sent to its members. Lists can be managed through DIY. Need a new list? Contact Postmaster. Address-lists containing external addresses are not recommended anymore, because of antispam measures taken at the external organisation.\nMailman mailing lists C\u0026amp;CZ manages a mailing listserver based on Mailman. A mailman list is advised for lists containing external addresses. See the mailman page for more info.\nSharing mailboxes This can easily be set in Roundcube webmail, at the bottom left near the gear icon, via \u0026lsquo;Folder options\u0026rsquo; and double-clicking on a folder, but also in an email program such as Kmail. Please use scienceloginnames only. The person who is allowed to use the folder often still has to subscribe to that folder. When a user reads an email, it is not automatically marked as read for all users. You can ask postmaster to alter this setting on the specific mailbox.\nAlternative mail settings Besides the IMAP protocol, the POP3 protocol is supported. If you don\u0026rsquo;t know what POP3 is, do not use it ;-). If you insist on using POP, the service listens on port 995. The recommended way of sending mail is using authenticated SMTP. However, from some networks within the Huygens building network, it is possible to deliver unauthenticated mail. In that case, mail should be delivered on port 25 after which it will be checked for virusses and/or spam. @ru.nl mail Tip\nFor almost all info on your @ru.nl mail and calendar, see the central RU website.\nEvery student and employee of the Radboud University should have a @ru.nl email address in the format:\nFirstname.Lastname@ru.nl\n","permalink":"https://cncz.science.ru.nl/howto/email/","summary":"\u003cdiv class=\"notice tip\" \u003e\n\u003cp class=\"first notice-title\"\u003e\u003cspan class=\"icon-notice baseline\"\u003e\u003csvg\u003e\u003cuse href=\"#tip-notice\"\u003e\u003c/use\u003e\u003c/svg\u003e\u003c/span\u003eTip\u003c/p\u003e\u003ch1 id=\"webmail\"\u003eWebmail\u003c/h1\u003e\n\u003cp\u003eFor quick access to your email, use our webmailer:\u003c/p\u003e\n\u003ch2\u003e\u003ca href=\"https://roundcube.science.ru.nl/\" target=\"_blank\"\u003ehttps://roundcube.science.ru.nl/\u003c/a\u003e\u003c/h2\u003e\n\u003cp\u003eWhen Roundcube asks for an OTP code, use the one from the OTP app you \u003ca href=\"../../news/2025-03-31_2fa/\"\u003eenrolled\u003c/a\u003e in \u003ca href=\"https://diy.science.ru.nl\" target=\"_blank\"\u003eDIY\u003c/a\u003e.\u003c/p\u003e\u003c/div\u003e\n\n\u003ch1 id=\"email-settings\"\u003eEmail settings\u003c/h1\u003e\n\u003cp\u003eWhen setting up your e-mail programs, it is sufficient to only enter your e-mail address. This is what your Science email address looks like:\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003ccode\u003eI.Lastname@science.ru.nl\u003c/code\u003e\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cp\u003eAll technical settings are then automatically filled in for you. If that does not work, or if it is necessary to fill in the details yourself, use the settings in the table below:\u003c/p\u003e","title":"Email"},{"content":"We have given the C\u0026amp;CZ website a completely new look. The update makes the website usable on smartphones. We will also make it possible to inform staff and students through this website even when all RU services are down. The content of the old site has been transferred. The old website is still available at https://old.cncz.science.ru.nl for the time being. For questions or comments, please contact Postmaster.\n","permalink":"https://cncz.science.ru.nl/news/2022-10-14_new-cncz-website/","summary":"\u003cp\u003eWe have given the C\u0026amp;CZ website a completely new look. The update makes the website usable on smartphones. We will also make it possible to inform staff and students through this website even when all RU services are down. The content of the old site has been transferred. The old website is still available at \u003ca href=\"https://old.cncz.science.ru.nl\" target=\"_blank\"\u003ehttps://old.cncz.science.ru.nl\u003c/a\u003e for the time being. For questions or comments, please contact \u003ca href=\"/howto/contact\"\u003ePostmaster\u003c/a\u003e.\u003c/p\u003e","title":"New C\u0026CZ website"},{"content":"Introduction to LimeSurvey Online surveys can be used for any type of data collection, not just for marketing purposes. Possible uses of surveys are sign-up forms for conferences, questionnaires for research projects, order forms, etc. For students and employees of the beta-faculty, C\u0026amp;CZ offers a survey service based on LimeSurvey.\nLimeSurvey is an open source web application. It currently offers:\nSending of invitations, reminders and tokens by email Multilingual surveys Conditions for questions depending on earlier answers (Skip Logic / Branching) Integration of pictures and movies into a survey Logging in The admin login page is located at:\nhttps://u1.survey.science.ru.nl/admin/\nIt is not necessary to request access: any Science login can login.\nUse policy Take care of the following items before activating a survey:\nSpecify a survey email address (General settings \u0026gt; Admin email). You might want to ask us for a dedicated mail alias. Set an expiry date (General settings \u0026gt; Publication \u0026amp; access control \u0026gt; Expiry date/time). This allows us to see if there are active surveys. Preparing a survey After logging in to the admin interface of LimeSurvey, you can create new surveys, edit existing surveys and view / download responses. The following hints will help you to get familiar with LimeSurveys user interface:\nNested interface The structure of a survey in LimeSurvey is nested: survey \u0026gt; question groups \u0026gt; questions. At the top right of the admin interface, you’ll find a selection list to choose a survey, question group or question.\nQuestion groups Generally, you’ll start creating a survey, add one or more question groups, followed by adding questions. For your first basic survey, you’ll probably be looking for a way to add questions to a survey. You can’t find that option on the survey level. Question groups are mandatory! So. first add a single question group, then start adding the questions to it.\nOnline documentation There’s excellent online documentation. You’ll probably want to start reading here at docs.limesurvey.org. This particular link points to the section explaining how to get your questions into a survey.\nYoutube crash course in ten minutes This is a quite clear video that shows how to get started creating a first survey.\nWatch on youtube\n","permalink":"https://cncz.science.ru.nl/howto/limesurvey/","summary":"\u003ch1 id=\"introduction-to-limesurvey\"\u003eIntroduction to LimeSurvey\u003c/h1\u003e\n\u003cp\u003eOnline surveys can be used for any type of data collection, not just for\nmarketing purposes. Possible uses of surveys are sign-up forms for\nconferences, questionnaires for research projects, order forms, etc. For\nstudents and employees of the beta-faculty, C\u0026amp;CZ offers a survey service\nbased on \u003ca href=\"https://community.limesurvey.org/\" target=\"_blank\"\u003eLimeSurvey\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eLimeSurvey is an open source web application. It currently offers:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eSending of invitations, reminders and tokens by email\u003c/li\u003e\n\u003cli\u003eMultilingual surveys\u003c/li\u003e\n\u003cli\u003eConditions for questions depending on earlier answers (Skip Logic /\nBranching)\u003c/li\u003e\n\u003cli\u003eIntegration of pictures and movies into a survey\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch2 id=\"logging-in\"\u003eLogging in\u003c/h2\u003e\n\u003cp\u003eThe admin login page is located at:\u003c/p\u003e","title":"LimeSurvey"},{"content":"The latest version of Matlab, R2022b, is available for departments that have licenses. The software and license codes can be obtained through a mail to postmaster for those entitled to it. The software can also be found on the install-disc. All C\u0026amp;CZ-managed Linux machines have this version installed, an older version (/opt/matlab-R2022a/bin/matlab) is still available temporarily. The C\u0026amp;CZ-managed Windows machines will not receive a new version during the semester to prevent problems with version dependencies in current lectures.\n","permalink":"https://cncz.science.ru.nl/news/2022-10-07_matlab-r2022b-available/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/matlab/\"\u003eMatlab\u003c/a\u003e, R2022b, is available\nfor departments that have licenses. The software and license codes can\nbe obtained through a mail to postmaster for those entitled to it. The\nsoftware can also be found on the \u003ca href=\"/tags/software\"\u003einstall\u003c/a\u003e-disc. All\nC\u0026amp;CZ-managed Linux machines have this version installed, an older\nversion (/opt/matlab-R2022a/bin/matlab) is still available temporarily.\nThe C\u0026amp;CZ-managed Windows machines will not receive a new version during\nthe semester to prevent problems with version dependencies in current\nlectures.\u003c/p\u003e","title":"Matlab R2022b available"},{"content":"Some time ago, some Science users fell for a phishing mail, therefore their account could be misused by spammers to send mail through our mailservers. Therefore our mailservers ended up in blacklists yesterday evening. Some mails could therefore not be delivered to other servers, that mail was returned to the sender. This morning we removed the IP addresses of our servers from several blacklists, we think that the problems are resolved now.\n","permalink":"https://cncz.science.ru.nl/cpk/1300/","summary":"\u003cp\u003eSome time ago, some Science users fell for a phishing mail, therefore\ntheir account could be misused by spammers to send mail through our\nmailservers. Therefore our mailservers ended up in blacklists yesterday\nevening. Some mails could therefore not be delivered to other servers,\nthat mail was returned to the sender. This morning we removed the IP\naddresses of our servers from several blacklists, we think that the\nproblems are resolved now.\u003c/p\u003e","title":"Mail problems because of spam run after phishing"},{"content":"ILS network management announced: Tuesday September 27 23:30 maintenance is carried out on the Eduroam wireless network in FNWI buildings a.o. In most cases connectivity will be interrupted for at least 30 and at most 60 minutes.\n","permalink":"https://cncz.science.ru.nl/cpk/1298/","summary":"\u003cp\u003eILS network management announced: Tuesday September 27 23:30 maintenance\nis carried out on the Eduroam wireless network in FNWI buildings a.o. In\nmost cases connectivity will be interrupted for at least 30 and at most\n60 minutes.\u003c/p\u003e","title":"Eduroam: Tuesday September 27 23:30 1 hour down for maintenance"},{"content":"ILS network management announced: Friday September 23 18.30 – 22.30 network maintenance is carried out on the DMZ and SRV firewalls. Connectivity interruptions of 20 to 40 seconds are expected. In case of problems, interruptions of 5 to 10 minutes might occur.\n","permalink":"https://cncz.science.ru.nl/cpk/1299/","summary":"\u003cp\u003eILS network management announced: Friday September 23 18.30 – 22.30\nnetwork maintenance is carried out on the DMZ and SRV firewalls.\nConnectivity interruptions of 20 to 40 seconds are expected. In case of\nproblems, interruptions of 5 to 10 minutes might occur.\u003c/p\u003e","title":"Friday September 23 18:30-22:30 RU firewall maintenance"},{"content":"From Monday, October 3, Sacha Djuric and Jelle de Koter of AVD/AVS Audiovisual Services will operate from the RU central location Thomas van Aquinostraat 1.00.22 for all faculties and service departments. The new phone number will be [+31 24 36 12680](tel:+31 24 36 12680). The most frequent picked-up items can then be picked up at the C\u0026amp;CZ helpdesk: adapter cables, beamers for study associations, cables, batteries, remote controls and a a mobile USB camera on a tripod with microphone (e.g. for hybrid education). In case of questions contact C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2022-09-23_avdavs-audiovisual-services-for-fnwi-to-central-ru-location/","summary":"\u003cp\u003eFrom Monday, October 3, Sacha Djuric and Jelle de Koter of AVD/AVS\nAudiovisual Services will operate from the RU central location Thomas\nvan Aquinostraat 1.00.22 for all faculties and service departments. The\nnew phone number will be [+31 24 36 12680](tel:+31 24 36 12680). The most frequent picked-up\nitems can then be picked up at the \u003ca href=\"/howto/contact/\"\u003eC\u0026amp;CZ helpdesk\u003c/a\u003e:\nadapter cables, beamers for study associations, cables, batteries,\nremote controls and a a mobile USB camera on a tripod with microphone\n(e.g. for hybrid education). In case of questions contact\n\u003ca href=\"/howto/contact/\"\u003eC\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e","title":"AVD/AVS Audiovisual Services for FNWI to central RU location"},{"content":"Today the new version of the C\u0026amp;CZ self service site DIY went live. This version also has a completely rewritten back-end, which allows new functionality to be added in the near future. The main new functionality that is available now, is the possibility of logging in with the Radboud ID (employee number or student number) in order to set a forgotten Science password. In case of questions contact C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2022-09-23_new-version-of-diysciencerunl/","summary":"\u003cp\u003eToday the new version of the C\u0026amp;CZ self service site\n\u003ca href=\"https://diy.science.ru.nl\" target=\"_blank\"\u003eDIY\u003c/a\u003e went live. This version also has a\ncompletely rewritten back-end, which allows new functionality to be\nadded in the near future. The main new functionality that is available\nnow, is the possibility of logging in with the Radboud ID (employee\nnumber or student number) in order to set a forgotten Science password.\nIn case of questions contact \u003ca href=\"/howto/contact/\"\u003eC\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e","title":"New version of DIY.science.ru.nl"},{"content":"Email codes overview ALICE-1 This is an email in which students are requested to participate in the digital course evaluation.\nRecipients? All students that are registered in OSIRIS for the exam of the corresponding course. When? Typically on the day of the exam (around 17:00). ALICE-2 This is an email reminder in which students are requested once again to participate in the digital course evaluation.\nRecipients? All students that are registered in OSIRIS for the exam of the corresponding course. When? Five days after the ALICE-1 email, so typically five days after the exam. ALICE-3 This is an email in which the feedback of the course are sent to the students.\nRecipients? All students that were invited to participate in the survey. When? The feedback of courses of a given quarter are sent at the end of the following quarter. ALICE-4 This is an email in which the feedback of the course is sent to the lecturer/course coordinator.\nRecipients? The lecturer/course coordinator of the course. When? The feedback of courses of a given quarter are sent at the end of the following quarter. CUDO-1 This is an email by which the course coordinator is notified that the student course evaluation is completed (and can be found in the course dossier) and that subsequently the lecturer’s course evaluation form can be submitted to the course dossier.\nRecipients? The course coordinator. When? When the student course evaluation is completed, typically two weeks after the exam. CUDO-2 This is an email by which the course coordinator is reminded that the student course evaluation is completed (and can be found in the course dossier) and that subsequently the lecturer’s course evaluation form can be submitted to the course dossier.\nRecipients? The course coordinator. When? Two weeks after the student course evaluation is completed, typically four weeks after the exam. CUDO-3 This is an email sent to the programme committee (“OLC”) members listing courses that should be ready for evaluation in the week after.\nRecipients? The secretary/chairman of a Programme Committee (“OLC”). When? Typically five weeks after the exam. PEERFEEDBACK-1 This is an email sent to all students who participate in a PeerFeedback evaluation which just opened.\nRecipients? All students who are registered in the BrightSpace group for which the evaluation has been enabled. When? Within five minutes after the opening of the evaluation. PEERFEEDBACK-2 This is a reminder to all students who have an uncompleted evaluation in PeerFeedback. For each evaluation, the instructor can choose how often a reminder is sent. We send a maximum of one email per day, so if necessary, we bundle the reminders for multiple open evaluations in one email.\nRecipients? Studens who have an uncompleted evaluation in PeerFeedback. When? Every day around 06:00. REMA-1 This is an email sent after a new incident has been reported through LimeSurvey Incident Form.\nRecipients? Employees of the Department of Occupational Health and Safety and Environmental Service (AMD) of the faculty where the incident took place. When? Immediately after a form has been submitted. ROUNDCUBE-1 Recipients? Users of the Roundcube webmail service. When? If pre-existing Sieve filters are present on the mail server when changing mail filters in Roundcube. Why? Pre-existing filters will remain active, but are not shown in Roundcube. What to do? Remove the pre-existing Sieve filters and configure everything with Roundcube. If this makes no sense to you, contact C\u0026amp;CZ!. DIY-1 This mail will be sent if the check date of a Science login has been reached.\nRecipients? IT contact persons. When? Monday 10am. Only in case the check date of a Science login has been reached. On the \u0026ldquo;Accounts\u0026rdquo; section of DIY, you can see for which Science logins you are the IT contact person.\nDIY-2 This mail will be sent if the check date of your Science login has been reached.\nRecipients? Owner of the account. When? At 10:00 on the day that the check date has been reached. LOGIN-1 This mail will be sent if a Science login has been created.\nRecipient? The person for whom a Science login has been created. When? Each day at 7pm. LOGIN-3 This mail will be sent if a Science login is about to expire.\nRecipient: The designated contact person for the [Science Login] set to expire. When? Every monday (if applicable) NEWLOGIN-1 This mail will be sent to the requester of Science logins.\nRecipients? Requesters of Science logins. When? As soon as the Science login is created. WELCOME-1 This mail will be sent to new Science logins.\nRecipients? Users of Science logins. When? One hour after the Science login is created. WELCOME-2 This mail will be sent to new Science logins that are (self) created on DIY.\nRecipients? User that created the Science login. When? As soon as the Science login is created. PASSWORDRESET-1 This mail will be sent to give you a new initial password for your Science login.\nRecipient? The person who\u0026rsquo;s DIY password was reset. When? Directly after the password has been reset by a contact person or system administrator. PASSWORDRESET-2 This email is being sent to you as the contact person following the submission of a password reset request for one of the Science logins managed by you.\nTo whom? Requester of a password reset. When? Immediately after the password has been modified by a system administrator. VOLUME-1 This email is sent to the requester of a network drive.\nTo whom? The owners and or members of the group linked to the network drive. When? As soon as the drive is created, migrated or upon request. MFA-1 This mail will be sent when a second factor (2FA) method has been added to your Science login.\nRecipient? The owner of the science login. When? Directly after the second factor was added. ","permalink":"https://cncz.science.ru.nl/howto/emailcodes/","summary":"\u003ch2 id=\"email-codes-overview\"\u003eEmail codes overview\u003c/h2\u003e\n\u003ch3 id=\"alice-1\"\u003eALICE-1\u003c/h3\u003e\n\u003cp\u003eThis is an email in which students are requested to participate in the\ndigital course evaluation.\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eRecipients? All students that are registered in OSIRIS for the exam\nof the corresponding course.\u003c/li\u003e\n\u003cli\u003eWhen? Typically on the day of the exam (around 17:00).\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch3 id=\"alice-2\"\u003eALICE-2\u003c/h3\u003e\n\u003cp\u003eThis is an email reminder in which students are requested once again to\nparticipate in the digital course evaluation.\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eRecipients? All students that are registered in OSIRIS for the exam\nof the corresponding course.\u003c/li\u003e\n\u003cli\u003eWhen? Five days after the ALICE-1 email, so typically five days\nafter the exam.\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch3 id=\"alice-3\"\u003eALICE-3\u003c/h3\u003e\n\u003cp\u003eThis is an email in which the feedback of the course are sent to the\nstudents.\u003c/p\u003e","title":"EmailCodes"},{"content":"A few campus-wide dips in the power supply made network and telephony unusable for about 15 minutes, except in server rooms where UPSs guarantee the power supply. Because 7 modules of desktop switches in Huygens/HFML/Felix had become defective, several hundred network outlets will only have worked again after the relevant switch module had been replaced.\n","permalink":"https://cncz.science.ru.nl/cpk/1297/","summary":"\u003cp\u003eA few campus-wide dips in the power supply made network and telephony\nunusable for about 15 minutes, except in server rooms where UPSs\nguarantee the power supply. Because 7 modules of desktop switches in\nHuygens/HFML/Felix had become defective, several hundred network outlets\nwill only have worked again after the relevant switch module had been\nreplaced.\u003c/p\u003e","title":"Network switches failed after a power failure on campus"},{"content":"Wireless network The wireless network that we advise to use, is eduroam. Authentication is done in one the following way:\nFirstname.Lastname@ru.nl and RU password Employees of Science-departments can request Eduroam Visitor Access accounts, that give visitors access to a separate part of the wireless network. through C\u0026amp;CZ-Operations, tel. 20000. Every employee of Radboud University can provide a guest with access for the rest of the day, by providing the guest a day code (keyword). That code can be found on the the RU portal. For more information, see the ILS website. Guests can also get access through the Library of Science.\n","permalink":"https://cncz.science.ru.nl/howto/netwerk-draadloos/","summary":"\u003ch1 id=\"wireless-network\"\u003eWireless network\u003c/h1\u003e\n\u003cp\u003eThe \u003ca href=\"https://www.ru.nl/ict-uk/general/wifi/\" target=\"_blank\"\u003ewireless network\u003c/a\u003e that we\nadvise to use, is \u003ca href=\"http://www.eduroam.org/\" target=\"_blank\"\u003eeduroam\u003c/a\u003e. Authentication is\ndone in one the following way:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eFirstname.Lastname@ru.nl and RU password\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eEmployees of Science-departments can request \u003ca href=\"https://eva.eduroam.nl/inloggen\" target=\"_blank\"\u003eEduroam Visitor Access\naccounts\u003c/a\u003e, that give visitors access to\na separate part of the wireless network. through\n\u003ca href=\"/howto/werkplekondersteuning/\"\u003eC\u0026amp;CZ-Operations\u003c/a\u003e, tel. 20000. Every\nemployee of Radboud University can provide a guest with access for the\nrest of the day, by providing the guest a day code (keyword). That code\ncan be found on the \u003ca href=\"https://portal.ru.nl\" target=\"_blank\"\u003ethe RU portal\u003c/a\u003e. For more\ninformation, see the \u003ca href=\"http://www.ru.nl/ict-uk/staff/wifi/wifi-visitors/\" target=\"_blank\"\u003eILS\nwebsite\u003c/a\u003e. Guests can\nalso get access through the Library of Science.\u003c/p\u003e","title":"Wifi Network"},{"content":"Matlab Matlab, a \u0026ldquo;matrix laboratory\u0026rdquo; for interactive scientific calculations of The Mathworks Inc. is an integrated software package, it combines numeric calculations, data visualization and a programming language.\nLicense A number of departments in the university have bought shares in the network license that C\u0026amp;CZ has arranged for the use of Matlab. When one has bought a share, one can get the software and installation/licensing keys of Matlab for either Linux, Mac or MS-Windows, also for older versions of Matlab, from C\u0026amp;CZ system administration.\nThis network license with a lot of toolboxes can only be used by computers on the Internet. For standalone use, one can try to use a free alternative like Scilab or Octave. The license purchase costs for on average 1 concurrent Matlab-user are EUR 241,- excl. VAT. The average is determined by counting the maximum number of concurrent users in each week. These maxima are then averaged over the whole year. Maintenance costs depend on the number of users, but are roughly EUR 50,- per year.\nWhen a department regularly uses Matlab without yet having bought a share in the network license, one should contact Astrid Linssen. The use of Matlab is logged on the license server. At the end of each year C\u0026amp;CZ calculates the average peak-use per week of each department, this should correspond to the number of Matlab-licenses bought. During the highest peak-use a department thus uses more licenses than bought, but this is no problem due to the shared network license: not all departments peak at the same time.\nMatlab is available on the MS-Windows and Linux machines managed by C\u0026amp;CZ.\nIntegrating Matlab in Python It is possible to use Matlab in python, see matlab-engine-for-python. On all Linux clients and servers this has been setup for Matlab R2020a and R2019b. See /opt/matlab*/Matlab-Python.Readme for details.\nOnline Matlab course If your department has a Matlab license and you want to learn Matlab interactively with the Matlab Academy (Mathworks Training Services), visit the Matlab Academy and create an account with an email address ending in: @science.ru.nl, @donders.ru.nl, @pwo.ru.nl, @let.ru.nl, @fm.ru.nl, @ai.ru.nl, @socsci.ru.nl or @ru.nl, and use the Activation Key that C\u0026amp;CZ can provide.\nKnown problems Toolkit problems after upgrading to new version A toolkit seems to be missing, the reason might be a Matlab searchpath that has not been adjusted for the new version. See Mathworks help1 and Mathworks help2.\nA fast fix, in Matlab is:\nrestoredefaultpath; matlabrc\nFirewalls When one is separated from the license server by a firewall, one needs to open 2 ports: one on which the license server is listening and 1 return portnumber. Contact C\u0026amp;CZ for details, the portnumbers might change due to an upgrade of Matlab. ","permalink":"https://cncz.science.ru.nl/howto/matlab/","summary":"\u003ch3 id=\"matlab\"\u003eMatlab\u003c/h3\u003e\n\u003cp\u003eMatlab, a \u0026ldquo;matrix laboratory\u0026rdquo; for interactive scientific calculations of \u003ca href=\"http://www.mathworks.com/\" target=\"_blank\"\u003eThe Mathworks Inc.\u003c/a\u003e\nis an integrated software package, it combines numeric calculations, data visualization and a programming language.\u003c/p\u003e\n\u003ch3 id=\"license\"\u003eLicense\u003c/h3\u003e\n\u003cp\u003eA number of departments in the university have bought shares in the\nnetwork license that C\u0026amp;CZ has arranged for the use of Matlab. When one\nhas bought a share, one can get the software and installation/licensing\nkeys of Matlab for either Linux, Mac or MS-Windows, also for older\nversions of Matlab, from \u003ca href=\"/howto/systeemontwikkeling/\"\u003eC\u0026amp;CZ system\nadministration\u003c/a\u003e.\u003c/p\u003e","title":"Matlab"},{"content":"Installing a PC When installing a new PC you have several options.\nIf the PC is not connected to the network, C\u0026amp;CZ can offer little or no help to install your PC. You can borrow DVD/CD’s with a Windows Operating system and application software like MS-Office, etc from C\u0026amp;CZ . If the PC is connected to the network via a (PXE enabled) network interface, a fully automated installation of Windows with standard applications is possible. In this case your PC becomes a beheerde werkplek PC.\nAlso it is possible to install, fully automated, Ubuntu Linux with standard applications on the PC.\nIn both cases contact C\u0026amp;CZ to register your PC. ","permalink":"https://cncz.science.ru.nl/howto/installeren-werkplek/","summary":"\u003ch2 id=\"installing-a-pc\"\u003eInstalling a PC\u003c/h2\u003e\n\u003cp\u003eWhen installing a new PC you have several options.\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eIf the PC is not connected to the network, C\u0026amp;CZ can offer little or\nno help to install your PC. You can \u003ca href=\"/tags/software\"\u003eborrow\u003c/a\u003e\nDVD/CD’s with a Windows Operating system and application software\nlike MS-Office, etc from C\u0026amp;CZ .\u003c/li\u003e\n\u003cli\u003eIf the PC is connected to the network via a (PXE enabled) network\ninterface, a fully automated installation of Windows with standard\napplications is possible. In this case your PC becomes a \u003ca href=\"/howto/windows-beheerde-werkplek/\"\u003ebeheerde\nwerkplek PC\u003c/a\u003e.\u003cbr\u003e\nAlso it is possible to install, fully automated, Ubuntu Linux with\nstandard applications on the PC.\u003cbr\u003e\nIn both cases contact C\u0026amp;CZ to register your PC.\u003c/li\u003e\n\u003c/ul\u003e","title":"Installeren werkplek"},{"content":"The system clocks on C\u0026amp;CZ managed Linux machines are being kept up to date by using the Network Time Protocol (ntp). Each machine checks at regular intervals its system clock with several designated machines on the network and adjusts their system clock when needed. Whenever the difference between the local system clock compared to the system clock of other servers gets bigger than half a second the clock will be adjusted. If the difference is smaller, the system clock will be adjusted in small steps by slowing down or accelerating a little, to avoid multiple large time adjustments. Because all systems adjust their system clock to the same ntp servers, all system clocks will eventually become synchronized. The local servers are ntp1.science.ru.nl and ntp2.science.ru.nl.\nThese two servers sychronize their system clock with external stratum 1 servers:\nntp0.nl.uu.net ntp1.nl.uu.net One of these ntp servers, the ntp1.science.ru.nl, is available for synchronizing the system clock of your machine.\nExternal information:\nwww.ntp.org www.pool.ntp.org ","permalink":"https://cncz.science.ru.nl/howto/netwerk-ntp/","summary":"\u003cp\u003eThe system clocks on C\u0026amp;CZ managed Linux machines are being kept up to\ndate by using the Network Time Protocol (ntp). Each machine checks at\nregular intervals its system clock with several designated machines on\nthe network and adjusts their system clock when needed. Whenever the\ndifference between the local system clock compared to the system clock\nof other servers gets bigger than half a second the clock will be\nadjusted. If the difference is smaller, the system clock will be\nadjusted in small steps by slowing down or accelerating a little, to\navoid multiple large time adjustments. Because all systems adjust their\nsystem clock to the same ntp servers, all system clocks will eventually\nbecome synchronized. The local servers are ntp1.science.ru.nl and\nntp2.science.ru.nl.\u003c/p\u003e","title":"Network time (ntp)"},{"content":"Disposal Safe disposal of IT equipment and data carriers\nThe FNWI Housing \u0026amp; Logistics (HL) department manages a contract with an external specialized company for the secure destruction/shredding of data carriers on location. The secure metal container that is used as a temporary cache, can be found at C\u0026amp;CZ as of September 2022. Employees and students of the Faculty of Science can put data carriers with sensitive data in the container themselves at C\u0026amp;CZ. The C\u0026amp;CZ helpdesk can help recognizing and removing data carriers from desktops, laptops etc.\nBroken monitors and other electronics can be discarded at the ‘Logistiek Centrum’ of Housing \u0026amp; Logistics:\nhttps://www.ru.nl/science/about-the-faculty/organisation/supporting-services/housing-logistics/\nYou can find the unsafe containers by taking the elevator to floor -2 of the Huygens building, then go all the way right (south), and then go all the way left (east).\n","permalink":"https://cncz.science.ru.nl/howto/afvoer/","summary":"\u003ch2 id=\"disposal\"\u003eDisposal\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSafe disposal of IT equipment and data carriers\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe FNWI Housing \u0026amp; Logistics (HL) department manages a contract\nwith an external specialized company for the secure\ndestruction/shredding of data carriers on location. The secure\nmetal container that is used as a temporary cache, can be found\nat C\u0026amp;CZ as of September 2022. Employees and students of the\nFaculty of Science can put data carriers with sensitive data\nin the container themselves at C\u0026amp;CZ. The C\u0026amp;CZ helpdesk can help\nrecognizing and removing data carriers from desktops, laptops etc.\u003c/p\u003e","title":"Disposal"},{"content":"C\u0026amp;CZ manages a large number of machines that anybody with an Science-account can use. Students can also login to the PC’s in the computer labs, the study area and the library with their S-number and RU-password, in the RU-domain on MS-Windows. All computer labs are dual boot: during startup of the PC one can choose to boot Linux (Ubuntu) or Windows.\nAvailable computer labs The Science Faculty provides the following computer labs:\nTK023, (HG00.023)\n41 Managed PC’s (AIO, Core i5-12500, 3.0GHz, 16GB, SSD, 24\u0026quot; widescreen LCD monitor, sound), dual boot with Windows and Linux (Ubuntu).\nThe teacher-PC is connected to a beamer, which makes it possible to project the computer screen on the wall. TK029, (HG00.029)\n61 Managed PC’s (AIO, Core i5-12500, 3.0GHz, 16GB, SSD, 24\u0026quot; widescreen LCD monitor, sound), dual boot with Windows and Linux (Ubuntu).\nThe teacher-PC is connected to a beamer, which makes it possible to project the computer screen on the wall. TK075, (HG00.075)\n65 Managed PC’s (AIO, Core i5-12500, 3.0GHz, 16GB, SSD, 24\u0026quot; widescreen LCD monitor, sound), dual boot with Windows and Linux (Ubuntu).\nA PC is connected to a beamer, which makes it possible to project the computer screen on the wall. TK206, (HG00.206)\n37 Managed PC’s (AIO, Core i5-12500, 3.0GHz, 16GB, SSD, 24\u0026quot; widescreen LCD monitor, sound), dual boot with Windows and Linux (Ubuntu).\nA PC is connected to a beamer, which makes it possible to project the computer screen on the wall. TK625, (HG00.625)\n43 Managed PC’s (AIO, Core i5-12500, 3.0GHz, 16GB, SSD, 24\u0026quot; widescreen LCD monitor, sound), dual boot with Windows and Linux (Ubuntu).\nA PC is connected to a beamer, which makes it possible to project the computer screen on the wall. Study Area \u0026amp; Library of Science Most of the computers at the Study Area (HG00.201) and the Library of Science (HG00.011) are Windows-only and managed by the ILS. That makes all Windows computers in all RU Study Areas and Library locations uniform. General information about the Library of Science (such as opening hours and reservation of a study place) can be found at the Library of Science website. In addition to these Windows-only computers, eight Linux-only computers, managed by C\u0026amp;CZ, are available in the front of the Study area (HG00.201).\nLaptops The faculty has a laptop pool:\nLibrary of Science, (HG00.11) 60 Managed PC’s (HP EliteBook 850 G6 - Core i7-8665U, 16GB, 512B SSD, 15.6\u0026quot; Full HD) with Windows 10. Teacher PC’s with video projector in college rooms In the following college rooms a teacher-PC is present, connected to a video projector.\nHG00.062 HG00.065 HG00.068 HG00.071 HG00.086 HG00.303 HG00.304 HG00.307 HG00.308 HG00.310 Reservation Just like college rooms or colloquium rooms, computer labs can be reserved for courses. One should consider the follwing:\nReservation of the computer lab. To make a reservation, get in contact with Zaalreservering, department HL (Housing \u0026amp; Logistics), room HG00.040, telefoon 52010. N.B.: This is only for the reservation of the computer lab.\nAdmittance to computer labs is arranged by an admittance procedure. All students in a course must have an Account. Installed software. Besides MS Windows with MS Office or Linux with Open Office, a lot of extra software is always available on the PC’s in the computer labs. See: Windows applications, Linux applications. Additional software for courses must be installed by the system management of C\u0026amp;CZ.\nIt is not possible to get Administrative- or Power User privileges for installing additional software or running problematic programs. Especially new software for the computer labs should be requested at the earliest possible moment (at least two weeks in advance).\nThis is needed because system management must figure out if the software can run using ordinary user privileges, to package the software and finally to distribute the package to the PC’s in the requested computer lab(s). It has happened that certain software could not be used because of security and maintainability reasons, an alternative software package had to be found, packaged, installed and used during the course. If a computer lab is not reserved for a course, anybody with an account can use any of the PC’s available.\nBehaviour in the labs It is not allowed to smoke, eat or drink in the computer labs, this is to protect the equipment. Do not cause annoyances to other users, like disturbing sounds, long term screen lock, …). Also there is a priority to use a PC: highest priority has the course that has reserved the computer lab, next are employees or students working on courses, essays and reports.\nAdvertising The login screens of the computer lab PCs accommodate 7 advertisements of 400x280 pixels, next to the official announcements. New advertisements can be submitted to inlogschermen@science.ru.nl. The current advertisements can be viewed here as well.\nOpening hours An opening/closing procedure is available.\n","permalink":"https://cncz.science.ru.nl/howto/terminalkamers/","summary":"\u003cp\u003eC\u0026amp;CZ manages a large number of machines that anybody with an\n\u003ca href=\"/howto/login/\"\u003eScience-account\u003c/a\u003e can use. Students can also\nlogin to the PC’s in the computer labs, the study area and the library\nwith their S-number and RU-password, in the RU-domain on MS-Windows. All\ncomputer labs are dual boot: during startup of the PC one can choose to\nboot Linux (Ubuntu) or Windows.\u003c/p\u003e\n\u003ch3 id=\"available-computer-labs\"\u003eAvailable computer labs\u003c/h3\u003e\n\u003cp\u003eThe Science Faculty provides the following computer labs:\u003c/p\u003e","title":"Terminal-rooms"},{"content":"Mozilla Thunderbird is free and open-source email client software. Below are instructions to configure Thunderbird for RU MS365 mail and for Science mail.\nConfigure Thunderbird for RU MS365 mail. The RU MS365 instructions do not mention Thunderbird, but there is a RU created set of instructions (pictures in Dutch).\nConfigure Thunderbird for Science mail. NB: For a self managed pc after installing Thunderbird you\u0026rsquo;ll have to uncheck Launch Mozilla Thunderbird now and click Finish. Last installation dialog screen Create a profile NB: If you installed or used Thunderbird previously without creating a profile, please first read Thunderbird#Thunderbird_opgestart_zonder_eerst_een_profiel_aan_te_maken.\nStart the profile manager, go to Start -\u0026gt; Profile Manager Programs -\u0026gt; Mozilla Thunderbird -\u0026gt; Profile Manager.\nClick Create Profile….\nClick Next. At Enter new profile Completing \u0026#39;Create Profile Wizard\u0026#39; name: you can fill in anything, do not leave it empty.\nClick Choose Folder… to create a directory Choose Folder - \u0026#39;Create Profile Wizard\u0026#39; that will contain settings, address book etc. If you use “Local Folders” it will also contain mail. Select the homedirectory (U: drive) in My Computer\nClick Make New Folder and give it a name, Finishing - \u0026#39;Create Profile Wizard\u0026#39; e.g. thunderbird and click OK. Check whether under Your user settings, preferences, bookmarks and mail will be stored in: you read something like H:\\thunderbird or the cosen new directory on the H: drive. Click Finish, a profile has been created.\nStart Thunderbird for the first time Start Thunderbird by clicking double on the profile name. After that, Thunderbird can also be started with the desktop icon. The first time starting Thunderbird may tape several minutes, be patient, next times it wille be faster.\nAccount Wizard Thunderbird starts with the Account Wizard.\nSelect Email account and click Next. At Your Name, fill in your name as you want others to see it in the “From:” line. At Email address fill in your email address or one of your alternate mail addresses as listed on the DIY website after: “Mail address:” or after \u0026ldquo;Also accepted addresses\u0026rdquo;.\nClick Next. At Select the type of incoming server you are using check the option IMAP. At Incoming Server fill in what DIY lists as “Imap/pop mailserver:”. At Outgoing Server fill in: smtp.science.ru.nl\nClick Next. At Incoming User Name fill in Account Wizard - User Names what DIY lists after “Username”. At Outgoing User Name fill in what DIY lists after “Username”.\nClock Next. At Account Name leave it Account Wizard - Account Name Your mail address - or fill in a descriotive name. Click Next. Check the summary of the Account Wizard - Finishing created settings.\nClock Finish. The alert window appears. This has nothing to do with “Maximum number of connections”, but with settings that are not correct, which makes a connection with the mailserver impossible. Click OK.\nPick options The main Thunderbird window appears. Hit the menu bar to go to Tools -\u0026gt; Options…. Select Composition in the top of the Options window and go to the General tab. Many people prefer forwarding in the body over forwarding as attachment.\nChange Forward messages via the drop-down from As Attachment to Inline. Go to the tab\nAddressing. It is often useful to keep the addresses of people tou send mail to, separate from the personal address book. Change at Automatically add\noutgoing email addresses to my with the drop down Personal Address Book in Collected Addresses.\nAccount settings Go with the menu bar to Tools -\u0026gt; Account Settings….\nAccount Settings Click Server Settings under the newly created account. In the Security Settings box change Use secure connection to SSL.\nAccount Settings -\u0026amp;gt; Server Settings Click Advanced…. Uncheck Show only subscribed folders. If you do not want your folders in the inbox, then fill in INBOX. (note the final dot) at IMAP server directory in.\nClick OK. Click Copies \u0026amp; Folders under the account just created.\nThe standard settings often are ok. If you have a different Sent folder and would like to keep using that, you can specify which folder at the Other choice bullet.\nAccount Settings -\u0026amp;gt; Copies \u0026amp;amp; Folders Click Composition \u0026amp; Addressing under the account just created. Probably you\u0026rsquo;ll want to have the answer in a reply above the original message. To do that, at Automatically quote the original message when replying then change in the drop-down menu start my reply below the quote in start my reply above the quote.\nAccount Settings - Composition - Addressing If you want to write emails in “plain text”, then uncheck Compose messages in HTML format.\nSelect Outgoing Server (SMTP).\nClick Edit…. Select the choice bullet at TLS, if available. Change when necessary the port number, at Port in 587, see the \u0026lt;a href=\u0026quot;email_authsmtp\u0026quot; title=\u0026quot;wikilink\u0026quot;\u0026gt;{=html}Settings for Authenticated SMTP\u0026lt;/a\u0026gt;{=html} manual for more information. You can fill in a Description. This can be handy when using several smtp servers.\nFor newer versions of Tunderbird when using port 587: Choose “connection security” “STARTTLS” and make sure that “use secure authentication” is unchecked.\nClose the Account Settings window by clicking OK. Account Settings - Outgoing Server (SMTP) - SMTP Server Accountinstellingen controleren. Selecteer onder de accountnaam Inbox, en klik op Get Eerste mail binnenhalen. Mail.\nVul waar gevraagd het wachtwoord in, en klik op OK. Overzicht met een mailtje. Bij Inbox staat nu een plusteken. Klik hierop om deze\nuit te vouwen. Er zouden nu ten minste 2 mappen, met de naam “Virus” en “Spam” moeten staan. Klik op Write, vul bij To: Uw e-mailadres in, als Subject: b.v.\ntest. Klik nu op Send. Klik weer op Get Mail. Als\nalles goed is heeft U nu het testmailtje in Uw Inbox.\nThunderbird opgestart zonder eerst een profiel aan te maken Er is nog niets gedaan in Thunderbird - alleen een keer opgestart, account wizard niet doorlopen Als er nog niets met Thunderbird gedaan is, en U hier absoluut zeker van bent kunt U het profiel veilig verwijderen. Volg dan de volgende stappen.\nGa naar de Thunderbird profile manager Profile Manager Klik op Start -\u0026gt; Programs -\u0026gt; Mozilla\nThunderbird -\u0026gt; Profile Manager.\nKlik op Delete Profile… Klik op Profile Manager Delete Files Klik op Exit.\nU kun nu zonder problemen de handleiding voor het instellen van een Email account volgen.\nEr zitten al gegevens in Thunderbird die behouden of verhuisd moeten worden Als U het profiel wilt verplaatsen naar een goede locatie, volg dan de volgende stappen.\nZoek eerst het profiel op en lees de [#3 uitleg] Verplaats de profile directory naar een\ngoede locatie. B.v. van C:\\Documents and Settings\\loginnaam\\Application Data\\Thunderbird\\Profiles\\uy1yi71r.default\nnaar H:\\thunderbird.\nGa naar de Thunderbird profile manager Klik op Profile Manager Start -\u0026gt; Programs -\u0026gt; Mozilla Thunderbird -\u0026gt;\nProfile Manager.\nKlik op Delete Profile… Als U het onderstaande venster krijgt, klik dan op Don’t Profile Manager Delete Files - en controleer of de profiel directory goed verplaatst is.\nEn klik op Create Profile….\nKlik op Next. Vul bij Enter new profile Completing \u0026#39;Create Profile Wizard\u0026#39; name: eventueel een beschrijvende naam in (zolang het invulveld maar niet leeg is).\nKlik op Choose Folder… om de map te kiezen Choose Folder - \u0026#39;Create Profile Wizard\u0026#39; waarheen het profiel verplaatst is - b.v. H:\\thunderbird. Blader naar de map toe.\nSelecteer de map, en klik vervolgends op OK. Finishing - \u0026#39;Create Profile Wizard\u0026#39; Controleer of onder Your user settings, preferences, bookmarks and mail will be stored in: de goede map geselecteerd is. Klik op Finish.\nThunderbird starten Start Thunderbird door op de profielnaam te dubbelklikken. In het vervolg kan\nthunderbird ook via het dektop icoon gestart worden.\nProfielen Er zijn 2 soorten profielen die op deze pagina genoemd worden. Dit is het Windows gebruikersprofiel en het Thunderbird profiel.\nHet Windows gebruikersprofiel Dit zijn de Windows instellingen die op een server worden gebackupt indien U een beheerde werkplek PC heeft. Het Windows gebruikersprofiel staat op de systeempartitie (meestal de C: schijf) in een subdirectory van Documents and Settings genoemd naar Uw loginnaam. Zie het onderstaande voorbeeld.\nDocuments and Settings Als er in deze pagina verder nog verwezen wordt naar “profiel” wordt, indien niet verder aangegeven het Thunderbird profiel bedoeld.\nHet Thunderbird profiel Dit is de verzameling instellingen en gegevens van Thunderbird opgeslagen in een directory. Gegevens die zoal hierin staan zijn contactpersonen, van welke server mail opgehaalt moet worden, eventueel lokaal opgeslagen emails, enz. Een profiel wordt standaard aangemaakt in Uw Windows profiel. Dit is voor thuisgebruik goed, maar Uw lokale mail en instellingen worden niet ge-backupped! In het geval van een beheerde werkplek wordt dit ook op deze lokatie ge-backupped - maar de ruimte is hier zeer beperkt. Daarom moet Uw Thunderbird profiel in principe op een netwerkschijf staan die gebackupped wordt. In dit de verdere FAQ’s wordt ervanuitgegaan dat de ge-backuppede lokatie waar U Uw Thunderbird profiel wilt -of- heeft opgeslagen Uw homedirectory is.\nOm de achter de lokatie te komen waar nu uw profiel opgeslagen is, doe het volgende:\nGa naar de Thunderbird profile manager, Start -\u0026gt; Programs Profile Manager -\u0026gt; Mozilla Thunderbird -\u0026gt; Profile Manager.\nIs deze leeg, dan heeft U nog geen Thunderbird profiel. U kunt dan zonder problemen de handleiding voor het instellen van een Email account volgen. De onderstaande punten hoeven dan niet doorlopen te worden. Is er wel een profiel naam aanwezig, zoals in de onderstaande afbeelding - sluit de profile manager door op\nExit te klikken en ga dan verder met de onderstaande stappen.\nZorg dat verborgen bestanden zichtbaar zijn. Open My Computer op het bureaublad. Ga via het menu naar Tools - Folder Options…, selecteer het View tabblad.\nSelecteer bij Hidden files and folders het keuzebolletje Show hidden files and folders. Deze optie kan waar teruggezet worden wanneer het bekijken / verhuizen / verwijderen van het profiel klaar is. Klik op OK.\nBekijk het profiles.ini bestand. Ga naar Uw “Windows gebruikersprofiel directory”, Application Data en vervolgens Thunderbird. B.v. “C:\\Documents and Settings\\loginnaam\\Application Data\\Thunderbird”. In deze directory staat een profiles.ini. Dit bestand verwijst naar de locatie waar het profiel opgeslagen is. Open het bestand door hierop te dubbelklikken. In dit bestand staan twee regels die nu relevant zijn. Achter IsRelative zal of 0 of 1 staan. Bij Path zal een relatief - bij een IsRelative waarde van 1, of absoluut\npad - bij een IsRelative waarde van 0, staan.\nIsRelative = 1 Path waarde is Profiles/\u0026lt;directory naam\u0026gt; waarbij “directorynaam” staat voor een willekeurige letters-met-cijfers combinatie met “.default” erachter. Hieronder een voorbeeld waarbij het profiel onder het Windows-profiel staat - dit is, voor niet-thuissituaties, niet goed! Het Path is hier Profiles/uy1yi71r.default. De locatie van het profiel is de directory waarin het profiles.ini bestand zich bevind met eraanvast de waarde van Path. De locatie van het profiel is bij dit voorbeeld C:\\Documents and Settings\\loginnaam\\Application Data\\Thunderbird\\Profiles\\uy1yi71r.default\nIsRelative = 0 Path waarde is het volledige pad naar de profiel directory In het volgende voorbeeld staat het profiel op de homedirectory. De Path regel heeft de waarde H:\\thunderbird. De locatie van het profiel is de waarde van Path, in dit voorbeeld H:\\thunderbird\nHoe stel ik een LDAP adresboek in? U kunt het Science LDAP adresboek toevoegen door de onderstaande stappen uit te voeren.\nActiveer en open de directory servers lijst Ga via het menu naar Tools -\u0026gt; Options…. Selecteer bovenin het\nOptions venster Composition, ga naar het tabblad Addressing. Vink Directory Server aan, en klik op Edit Directories….\nVoeg een nieuwe toe.\nKlik op Add. Vul bij het Directory Server Directory Server toevoegen Properties venster, bij het tabblad General in: Name een beschrijvende naam, b.v.: Science-Adresboek Hostname : ldap.science.ru.nl Base DN : o=addressbook Port number heeft als defaultwaarde al 389 - hoeft niet veranderd te worden. En klik alle openstaande\noptie vensters met OK dicht.\nUse the Science Address Book The LDAP address book can be used in two places.\nUse LDAP Address Book from \u0026ldquo;Address Book\u0026rdquo; In the main window, click the button Address Book\nLDAP Adresboek vanuit Address Book gebruiken On the left side you see a list of available address books. This includes the Science-Adressboek, clock this. If you enter part of a name or of a mail address in the search window, the window below fills with up to 100 matches.\nUse LDAP Address Book from a “Compose” window In the main window, click Write\nLDAP Adresboek vanuit eenCompose venster gebruiken A Compose window appears. Click Contacts and select at Address Book the Science-Adresboek. If you enter part of a name or of a mail address in the search window, the window below fills with up to 100 matches.\nRemarks Not al items in the address book have an email address. If you want to know what attributes an item has, right-click an item and select Properties.\nBecause of security, you can\u0026rsquo;t change items in the LDAP address book, but you can make a copy in a local address book by dragging an item from the “Science-Adresboek” to e.g. the “Personal Address Book”. The LDAP address book can omnly be reached from RU campus or when connected with VPN.\nTips / tricks Thunderbird tips\nAdd-ons Add-ons are small pieces of software that can add new features or tiny tweaks to your Thunderbird. See the Thunderbird Add-ons page.\nHow to change font size in From and To lines in ThunderBird\nClick on Menu bar -\u0026gt; Tools -\u0026gt; Add-ons Click on “Get Add-ons” Search for Add-on “Theme Font \u0026amp; Size Changer” Install. Add-on provides a ’Restart now\u0026quot; item. Restart Thunderbird Click on Menu bar -\u0026gt; Tools -\u0026gt; Theme Font \u0026amp; Size Changer Categorie:Thunderbird\n","permalink":"https://cncz.science.ru.nl/howto/thunderbird/","summary":"\u003cp\u003eMozilla Thunderbird is free and open-source email client software. Below are instructions to configure Thunderbird for RU MS365 mail and for Science mail.\u003c/p\u003e\n\u003ch2 id=\"configure-thunderbird-for-ru-ms365-mail\"\u003eConfigure Thunderbird for RU MS365 mail.\u003c/h2\u003e\n\u003cp\u003eThe \u003ca href=\"https://www.ru.nl/en/services/campus-facilities/work-and-study-support-services/ict/email-and-calendar\" target=\"_blank\"\u003eRU MS365 instructions\u003c/a\u003e do not mention Thunderbird,\nbut there is a \u003ca href=\"/downloads/2023/Mozilla-Thunderbird-settings-for-RU.pdf\"\u003eRU created set of instructions (pictures in Dutch)\u003c/a\u003e.\u003c/p\u003e\n\u003ch2 id=\"configure-thunderbird-for-science-mail\"\u003eConfigure Thunderbird for Science mail.\u003c/h2\u003e\n\u003cp\u003eNB: For a \u003cem\u003eself managed pc\u003c/em\u003e after installing Thunderbird you\u0026rsquo;ll have to uncheck \u003cstrong\u003eLaunch Mozilla Thunderbird now\u003c/strong\u003e\nand click \u003cstrong\u003eFinish\u003c/strong\u003e.\n\u003cfigure\u003e\n \u003cimg loading=\"lazy\" src=\"/img/old/tb-no-bw-install.jpg\"/\u003e \u003cfigcaption\u003e\n Last installation dialog screen\n \u003c/figcaption\u003e\n\u003c/figure\u003e\n\u003c/p\u003e","title":"Thunderbird"},{"content":"Thunderbird tags In Thunderbird you can tag a message with one or more tags by clicking on the message with the right mouse button and choosing Tag. There are five standard tags with descriptions Important, Work, etc. If the mail server is an imap server like post.science.ru.nl, then the tags are stored on the server, which means that every Thunderbird will show the tags.\nIt is somewhat more complicated for new tags that you can create. Thse are also stored on the imap server, but will initialy not be visible in other Thunderbird programs. One can make a new tag by clicking with the right mouse button on a message and choosing Tag -\u0026gt; New Tag… or using the menu Tools -\u0026gt; Options… -\u0026gt; Display -\u0026gt; Tags -\u0026gt; Add. The tag name will be used both as internal tag name and as visible description. If you alter the tag name later on, then the internal tag name will remain the same. The internal tag name (i.e. the initial tag name) will be used as tag on the imap server. A new tag will only be visible in another Thunderbird if a tag with the same internal tag name exists. So it is important the choose the right initial tag name. In particular one has to agree on a tag name if the mailbox is shared. After that everyone can change the colour and tag name, without consequences for the visibility of the tags.\nThe difference between the internal tag name and the visible tag name is clearly visible in the Config Editor (Tools -\u0026gt; Options… -\u0026gt; Advanced -\u0026gt; General -\u0026gt; Config Editor… and then filter on the word tag). There you can also discover that the internal tag name of the Important tag is $label1.\n","permalink":"https://cncz.science.ru.nl/howto/thunderbird-tags/","summary":"\u003ch2 id=\"thunderbird-tags\"\u003eThunderbird tags\u003c/h2\u003e\n\u003cp\u003eIn Thunderbird you can tag a message with one or more \u003cem\u003etags\u003c/em\u003e by clicking\non the message with the right mouse button and choosing \u003cstrong\u003eTag\u003c/strong\u003e. There\nare five standard tags with descriptions \u003cstrong\u003eImportant\u003c/strong\u003e, \u003cstrong\u003eWork\u003c/strong\u003e, etc.\nIf the mail server is an imap server like \u003cstrong\u003epost.science.ru.nl\u003c/strong\u003e, then\nthe tags are stored on the server, which means that every Thunderbird\nwill show the tags.\u003c/p\u003e\n\u003cp\u003eIt is somewhat more complicated for \u003cem\u003enew tags\u003c/em\u003e that you can create. Thse\nare also stored on the imap server, but will initialy not be visible in\nother Thunderbird programs. One can make a new tag by clicking with the\nright mouse button on a message and choosing \u003cstrong\u003eTag -\u0026gt; New Tag…\u003c/strong\u003e or\nusing the menu \u003cstrong\u003eTools -\u0026gt; Options… -\u0026gt; Display -\u0026gt; Tags -\u0026gt; Add\u003c/strong\u003e. The\ntag name will be used both as internal tag name and as visible\ndescription. If you alter the tag name later on, then the internal tag\nname will remain the same. The internal tag name (i.e. the \u003cem\u003einitial\u003c/em\u003e tag\nname) will be used as tag on the imap server. A new tag will only be\nvisible in another Thunderbird if a tag with the same internal tag name\nexists. So it is important the choose the right initial tag name. In\nparticular one has to agree on a tag name if the mailbox is shared.\nAfter that everyone can change the colour and tag name, without\nconsequences for the visibility of the tags.\u003c/p\u003e","title":"Thunderbird Tags"},{"content":"C\u0026amp;CZ’s Not Frequently Enough asked questions with answers! Last modified: 2018-03-21\nFor questions, contact us.\nAbout this FAQ Contributors Patrick Atoon patricka@cs.kun.nl Kees Keijzers keesk@science.ru.nl Jos Alsters josal@science.ru.nl Peter van Campen Peter.vanCampen@science.ru.nl Simon Oosthoek S.Oosthoek@science.ru.nl Linux shells What is a shell? The shell is a program that interprets the user’s commands and executes them on the Operating System. There are many kinds of shells, which have different interpreted languages in which to write commands.\nA shell can be used interactively, a human user typing commands on a terminal prompt, or in a shellscript. The shellscript is also called a batch file. A shell script that asks for human input can only be run from an interactive shell.\nExamples of shells On the linux machines you can use the shells:\n/bin/sh : the default “Bourne” compatible shell, on Ubuntu, this is /bin/dash /bin/dash: a light-weight Bourne/POSIX compatible shell. /bin/bash: the Bourne Again Shell. A full fledged linux shell and the default. /bin/zsh : the last shell you’ll ever need, very configurable /bin/tcsh: a csh compatible shell. We strongly advise not to use this for scripts! Note that there are shells for microsoft windows, e.g. cmd.exe and powershell. Recently the bash shell is becoming available on windows as well.\nWhat is a command? A command is either a built-in command of the shell, or a file with executable instructions in it.\nThe built in commands are executed by the shell, so they do not require the kernel to read another file and execute a different process. For this reason, some commands that are used often in scripts or on the commandline are not just available as an executable file, but also as internal command (e.g. echo and /bin/echo). A lot of built-in commands have to be built in, e.g. set or cd, because they act on the state of the shell itself.\nMost commands are executable files, these can be separated in two categories; scripts and binary executables. Scripts are interpreted by an interpreter, like bash, python, perl, etc. Binary executables are programs compiled to machine code and stored in a format that the kernel understands.\nHow does the shell find a command? Way to find the command Examples an absolute path-name, starting with \u0026lsquo;/\u0026rsquo; prompt\u0026gt; /usr/bin/vim or prompt\u0026gt; /usr/local/datasearch/bin/telgids a relative path-name, containing at least one \u0026lsquo;/\u0026rsquo; prompt\u0026gt; bin/testprogramma or prompt\u0026gt; ../petervc/bin/backup-photon a name without \u0026lsquo;/\u0026rsquo; built-in the shell prompt\u0026gt; echo \u0026ldquo;something\u0026rdquo; or prompt\u0026gt; read X a name without \u0026lsquo;/\u0026rsquo; found in the \u0026lsquo;$PATH\u0026rsquo; prompt\u0026gt; ls or prompt\u0026gt; firefox PATH The variable PATH is important, it decides which file is run as command if not specified with an absolute or relative path-name. If multiple files with the same name are present on the system, the order of the directories in the PATH variable determines which of the files is executed.\nprompt\u0026gt; echo $PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:~/bin:~/bin The PATH variable is a list of directories separated with a colon character. It is evaluated from left to right. Note that the current directory (‘.’) is not in the PATH and if you want to execute a file that is in your current working directory (see $PWD or the pwd command), you need to specify it using a relative or absolute path-name:\nprompt\u0026gt; ./mycommand Some people want to have commands in the current directory to be found in the PATH, which is possible, however it has risks, especially if you are working as superuser on a machine, but even as common user, you run the risk of executing a commandfile that some malicious user placed in a directory in which you are lured to cd to.\nIf you insist on doing this, please make sure you put the ‘.’ at the end of the PATH, so system commands cannot be hidden behind a command file in the current directory with the same name!\nWhat is man Most commands have a manual page, you can invoke the manual page by giving the command: man \u0026lt;command\u0026gt; in an interactive shell.\nprompt\u0026gt; man bash will give you the manual page of the bash shell. Manual pages have a few common headers which you can find in nearly all man pages. Once you get used to this, you can quickly find out how to use the command more effectively.\nprompt\u0026gt; man -k something Will search for the keyword something in the summary of each man-page on the system. This may help you find the right command to do what you want, without knowing the exact command name. This is not a fool-proof solution and often a search engine will be more effective!\nTypical Linux commandline If you work in a terminal (window) you can give commands via the shell. The shell interprets your command, most importantly it splits the line you provide into words separated by whitespace.\npromp\u0026gt; COMMAND [arg1] [arg2] ... \u0026lt;enter\u0026gt; item explanation prompt\u0026gt; printed by the shell, usually user@host $, but it can be customised! COMMAND the command you want to execute (you type it) [arg1] argument for the command [arg2] another argument for the command … further arguments for the command \u0026lt;enter\u0026gt; You press the return key, or enter, to “give” the command to the shell. After this, your line will be interpreted and executed. examples ls -l long (-l) listing of all files and directories in the current working directory\nls -a -l long (-l) listing of all files and directories in the current working directory, also show hidden entries (-a)\nls -l /tmp long (-l) listing of all files and directories in /tmp\nls -l /bin/bash long (-l) listing of the file /bin/bash\nman man show manual page of the man command\nWhat is the environment? The environment is a collection of shell variables that is passed to the commands you type. Check what is in the environment with the command:\n$ env In a Bourne shell, a variable can be set like this:\nprompt\u0026gt; MYVAR=something to show what the variable holds (Note the $ sign):\nprompt\u0026gt; echo $MYVAR To make it part of the environment:\nprompt\u0026gt; export MYVAR Variables that are usually present are\nHOME: your home directory, used when you give the command cd without arguments to get to your home directory PATH: the list of directories searched for the name of the command you give without a / in it.\u0026lt;br /\u0026gt; NB Do not put the current directory “.” at the front of the path! EDITOR: The editor command used when you invoke a command that uses an editor to let you modify files. Typical editor commands are vi, nano, joe PAGER: The pager command used when e.g. a manual page doesn’t fit on a screen. Typical pagers are less and more. And many more… What is input/output redirection Whenever you start a command, the shell opens three “files” by default. These are stdin, stdout and stderr, also known by their numbers, 0, 1 and 2.\nThe (bourne) shell has the ability to redirect the flow of these files to somewhere else.\nWithout redirection, the three files are all connected to the terminal, so stdin to the keyboard device, stdout and stderr to the terminal window.\nIf you command the shell to redirect the output to a file, you can store the output of the command to a file, instead of seeing it on the window where you typed the command.\nexamples ls \u0026gt; mylisting output redirection creates or overwrites the file mylisting with the output of the ls command\nls \u0026gt;\u0026gt; mylisting output redirection creates or appends the file mylisting with the output of the ls command\n`ls some-file 2\u0026gt;myerrors` standard error redirection creates or overwrites the file myerrors with the error message produced by the ls command\nwc -l \u0026lt;$HOME/.bash_history using input redirection count the number of lines in the file $HOME/.bash_history. Try the same command with and without the \u0026lt;. With the \u0026lt; the stdin is redirected from the file $HOME/.bash_history to the wc command. Without the \u0026lt; the filename is passed as an argument to wc so it can open the file itself.\nInstead of redirecting to a file, it is also possible to redirect the output of a command to the stdin of another command. This is called a pipeline. Another way to look at this is to see the command after the | symbol as a filter. Multiple filters can be used in sequence to massage the output of a command into a desirable format or selection.\ncat /etc/shells | wc -l How can I run multiple commands from one commandline? Normally, commands are separated by a newline \u0026lt;enter\u0026gt;, however, you can also use a ; semicolon to seperate commands:\nls; sleep 10; echo bla The above will list the directory, wait 10 seconds, then print bla\nHow can I run a command non-interactively and without having to wait for it to finish? A common problem is that you want to run a command that takes a long time to finish and can do so without needing any input.\nYou can start a command to run in the background by adding a \u0026amp;\nls -l \u0026amp; As you will see when you try this, it is still connected to the terminal. If you prepend the command nohup you can disconnect it and even logout of the machine you run the command on. The output will typically end up in a file called nohup.out.\nThe shell has some commands that allow you to change the background, foreground and stopped state of a job (i.e. a running command).\nThe key control-Z stops a foreground job and returns you to the shell prompt the command fg brings a stopped job or a background job to running in the foreground (access to the terminal) the command bg brings a stopped command to the background the command jobs lists the background and stopped jobs started from your shell the command kill can send a signal to a background jobs. E.g. kill %1 NB, the kill command is most commonly used to send signals to process id’s (PID), which do not have to be started in the current shell. Alternatively: screen If you want to run the program and be able to provide input or check on its progress now and then, you can run a virtual terminal program, like screen or tmux, these will continue running when you disconnect and log out, later you can reconnect to see how it’s going. See man screen or man tmux.\nWhat is filename expansion or wildcards? The shell has some tools to save you typing long filenames. E.g. when you don’t want to list all files in a directory:\nls -d ? list all files and directories with a name of one character\nls -d ??? list all files and directories with a name of three character\nls -d a* list all files and directories with a name starting with “a” and any number of unspecified characters after it\nls -d .* list all files and directories with a name of three character\nls -d *[0-9] list all files and directories ending with a number\nls -d *[a-z] list all files and directories ending with a lowercase letter\nls -d *[A-Z0-9] list all files and directories ending with an uppercase letter or a number\nls -d ~/a* list all files and directories in my homedirectory starting with the letter a\nls -d *\\** or list all files and directories with names containing a real ls -d *'*'* *. Use the \\’ or single quotes to escape the character following it. i.e. prevent the shell from using the * for wildcard expansion.\ncharacters to \u0026lt; \u0026gt; [ ] ( ) { } * \u0026amp; ! ~ ; “space” “quotes” and many escape more…\nThe option -d of ls makes sure to list the entry itself and not the contents of the directory by that name.\nMore information about wildcards can be found in the bash manual.\nNB A special case is when you escape the newline or \u0026lt;enter\u0026gt; character. The shell will not start interpreting the command and you can add more to your command line on the next line.\nls \\\u0026amp;lt;enter\u0026amp;gt; -ltr\u0026amp;lt;enter\u0026amp;gt; ... prompt\u0026amp;gt; Will be the same as “ls -ltr”\nHow do I customise my interactive shell session? In this section we assume you are using the Bourne Again SHell (bash). You can configure your login shell via DIY. (If you are running this on your own Linux machine, you can use the chsh command to change the login shell.)\nWhat happens when I login? When you login, bash checks a list of possible locations for configuration files (which are full of shell commands).\nBash looks for the following files\n/etc/profile ~/.bash_profile ~/.bash_login ~/.profile. When you start a new interactive shell on the same machine, bash looks for other files:\n/etc/bash.bashrc ~/.bashrc People often want to have the same settings in all shells, so a lot of times you see the following in ~/.profile:\nif [ -f ~/.bashrc ]; then source ~/.bashrc fi And all configuration can exist in ~/.bashrc\nIn either the system or personal bashrc files, variables and aliases are set to preference:\nPATH is set to find systemwide programs, you can expand this search path to include directories in your homedir PS1 is set to a useful prompt PAGER How can I change the way my prompt looks? The variable PS1 is the prompt you normally see when you can enter a command to the shell. Various ways exist to make this more useful.\nSet PS1 directly Set PROMPT_COMMAND to something that sets PS1 To make it permanent, define PS1 or PROMPT_COMMAND in your ~/.bashrc file.\nexamples PS1='\\u@\\h:\\w\\$ ' PS1='\\u@\\h:\\w [$?]\\$ ' PS1='[\\e[32m]\\u@\\h:[\\e[33m]\\w[\\e[32m]$[\\e[0m] ' Other customizations Scripting Often you want to be able to reproduce a sequence of commands or even create a small program to do a lot of work in the shell.\nFor this purpose, you can create a batch script, shell file, or shell script. We recommend you do this in the bourne shell (sh) or (bash). Using (t)csh for shell scripts is not recommended, see Csh Programming Considered Harmful.\nBasic shell script echo start of script ls -l echo end of script If you put the above 3 lines in a file myscript, you can call bash myscript and run the commands in the file.\nIn order to make the file a command, you can make the file executable by giving the command: chmod a+x myscript\nThen you can call the script using ./myscript\nChoose interpreter #! hashbang How to provide multiple lines of input: Here Documents How to use the output of command as parameters: Command substitution prompt\u0026gt; CMD-1 `CMD-2` or ~equivalent in POSIX shell prompt\u0026gt; CMD-1 $(CMD-2) Call CMD-1 with arguments created from the output of CMD-2\nexample Rename a file to have a different extension or a date in the name.\nGet the date in a particular format (see man date)\nprompt\u0026gt; date \u0026ldquo;+%Y%m%d-%H:%M\u0026rdquo; 20180327-12:41\nGet the first part of the name\nprompt\u0026gt; basename pietje.jpg .jpg pietje\nUse both commands to create a new name for move (rename)\nprompt\u0026gt; mv -v pietje.jpg $(basename pietje.jpg .jpg)-$(date \u0026ldquo;+%Y%m%d-%H:%M\u0026rdquo;).jpg \u0026lsquo;pietje.jpg\u0026rsquo; -\u0026gt; \u0026lsquo;pietje-20180327-12:45.jpg\u0026rsquo;\nThe CMD-2 will be executed before CMD-1.\nCommand substitution can be invoked using `CMD-2` or $(CMD-2)\nThe advantage of $() is that it can be nested $(CMD-2 $(CMD-3))\nUnix Permissions Linux and unix have read, write and execute/access permissions for the owner, the group and others. This concept works very well, but has some limitations.\nOne common mistake is that the permissions for “others” are often called “world”, which implies that the whole world has access to the file or directory. Others in this case means not the owner and not any member of the group.\nBasic unix permissions To find out about permissions on the filesystem, you can give the ls -l command, which shows the permissions in the first column:\nprompt\u0026gt; ls -l total 8.0K drwx------ 2 simon simon 4.0K Mar 28 13:23 a drwxrwxr-x 2 simon simon 4.0K Mar 28 13:23 b -rw-rw-r-- 1 simon cncz 0 Mar 28 13:23 c -r--r--r-- 1 simon simon 0 Mar 28 13:23 d -rwxrwxrwx 1 simon simon 0 Mar 28 13:23 e The output meaning is:\ndrwxr-xr-- 2 simon cncz 4.0K Mar 28 13:23 a |||||||||| | | | | | | |||||||||| | | | | | +- filename |||||||||| | | | | +-------- modification date/time |||||||||| | | | +----------------- filesize |||||||||| | | +----------------------- group |||||||||| | +----------------------------- owner |||||||||| +--------------------------------- number of hardlinks to file |||||||||+----------------------------------- execute bit for others ||||||||+------------------------------------ write bit for others |||||||+------------------------------------- read bit for others ||||||+-------------------------------------- execute bit for group |||||+--------------------------------------- write bit for group ||||+---------------------------------------- read bit for group |||+----------------------------------------- execute bit for owner ||+------------------------------------------ write bit for owner |+------------------------------------------- read bit for owner +-------------------------------------------- directory (d), file (-) or ... d/- directory (d) or file (-)\nr r (permission to read) or - no permission to read\nw w (permission to write) or - no permission to write\nx x (permission to access/execute) or - no permission to access a directory or execute a file\nThe order of evaluation is like this:\nis the owner my effective user id? -\u0026gt; apply the permissions for owner -\u0026gt; finished am I a member of the group listed for this file/directory? -\u0026gt; apply the permission for the group -\u0026gt; finished am I not the owner and not a member of the group? -\u0026gt; apply the permissions for other -\u0026gt; finished In case of directories, the execute bit has to apply for all the directories in the path all the way back to the root directory /.\nChanging permissions chmod You can use chmod to change the permission bits.\nThe permissions are stored efficiently in the filesystem (in the inode). The permissions can be represented by 3 bits as an octal number ( 0 1 2 3 4 5 6 7 10 11 …)\nThe chmod command can use either a symbolic representation or octal representation of the permissions:\nprompt\u0026gt; chmod u+rw,g=r,o= thefile This is using chmod to change the permissions using a symbolic representation: change user permissions to add read and write permissions (don’t change execute permisions), set group to read and other to no permissions.\nprompt\u0026gt; chmod 760 thefile This is the octal way to represent the permissions, note that this cannot leave bits unchanged! You specify the permissions in three (or four) octal numbers, representing permissions for user, group and others. When using four numbers, this can set additional permissions, see advanced permissions.\noctal binary permissions value value\n0 000/— no permissions\n1 001/–x only execute/access permission\n2 010/-w- only write permssion\n3 011/-wx write and execute permissions\n4 100/r– only read permission (common for files)\n5 101/r-x read and execute permissions (common for directory)\n6 110/rw- read and write permissions (common for non executable files)\n7 111/rwx read write and execute permissions (common for directories and executable files)\nImportant points Note that directories need execute permissions to be usable (i.e. enter it) Permissions can be changed recursively to all files/directories in the specified files/directories; chmod -R u+w somedir changing permissions can be dangerous, you can loose access to your files or expose files to others that should not have access to them. chown Change the owner of a file/directory (only usable by root)\nprompt\u0026gt; chown john somefile chown also supports the -R flag chgrp Change the group of the file/directory\nprompt\u0026gt; chgrp myothergroup somefile chgrp also supports the -R flag Advanced unix permissions sticky bit\nother types of files\numask\n3.2 Hoe kan ik mijn bestanden ontoegankelijk maken voor anderen? Daarvoor is zowel op Unix als op MSDOS met PC-NFS het \u0026lsquo;chmod\u0026rsquo; commando. (Het bekijken van de protecties gaat met \u0026rsquo;ls -lg\u0026rsquo; ook op MSDOS!) Chmod heeft een aantal varianten om de \u0026lsquo;bitjes\u0026rsquo; te zetten:\nH:\u0026gt; ls -lg bestandje -rwxr-xr-x groep eigenaar 112 bestandje\n||| -\u0026gt; eigenaar ||| -\u0026gt; groep ||| -\u0026gt; wereld H:\u0026gt;\nDus de protectie van directories en bestanden worden steeds door 3 \u0026lsquo;bitjes\u0026rsquo; gegeven: rwx met de \u0026lsquo;waardes\u0026rsquo; 4,2,1\nHet chmod commando wordt als volgt gebruikt:\nwn4\u0026gt; chmod u=rwx,g=rx,o= bestandje wn4\u0026gt; ls -lg bestandje -rwxr-x\u0026mdash; groep eigenaar 112 bestandje\nNu is het bestand alleen schrijfbaar voor de eigenaar, en lees en executeerbaar voor de eigenaar en de groep. De rest mag niets.\nAnder voorbeeld:\nH:\u0026gt; chmod g=,o= geheim H:\u0026gt; ls -lg geheim -rwx\u0026mdash;\u0026mdash; groep eigenaar 12 geheim\nNu kan alleen de eigenaar het bestand lezen, wijzigen en executeren. Alle anderen kunnen niets.\nOok kun je in chmod expliciet de bitjes opgeven, in octale notatie, zoiets als:\nwn4\u0026gt; chmod 700 bestandje wn4\u0026gt; ls -lg bestandje -rwx\u0026mdash;\u0026mdash; groep eigenaar 112 bestandje\nHiermee is het bestand alleen nog te lezen, schrijven en executeren door de eigenaar.\nwn4\u0026gt; chmod 444 bestandje wn4\u0026gt; ls -lg bestandje -r\u0026ndash;r\u0026ndash;r\u0026ndash; groep eigenaar 112 bestandje\nNu is het bestand nog alleen nog te lezen door iedereen.\nVerder zie \u0026lsquo;man chmod\u0026rsquo; en \u0026lsquo;man ls\u0026rsquo; op Unix, voor PC-NFS staat e.e.a. in de manual.\nBijbehorend is de umask variabele: deze maskeert bitjes die niet vanzelf aan moeten gaan voor nieuwe bestanden: Als de umask 022 is dan zullen de bitjes van de eigenaar niet beinvloed worden, het \u0026lsquo;2\u0026rsquo; bitje (schrijven) voor de groep en de wereld wordt afgezet voor een nieuw bestand. Ook dit is weer waar voor zowel MSDOS als Unix. Onder MSDOS met PC-NFS zet men het umask als volgt:\nC:\u0026gt; net umask 077\nDit zet alle toegang tot nieuwe bestanden voor anderen dan de eigenaar af. Onder Unix gaat het bijna identiek:\nwn4\u0026gt; umask 022\nNu zijn voor alle nieuwe bestanden de \u0026lsquo;schrijf bitjes\u0026rsquo; uit.\nTenslotte: de protectie van de directorie is ook belangrijk! Het verwijderen van een file is een directorie operatie! Dus al heb ik op de file zelf geen rechten, als ik wel mag schrijven op de directorie kan ik het bestand gewoon verwijderen!\n","permalink":"https://cncz.science.ru.nl/howto/faq-unix/","summary":"\u003ch1 id=\"cczs-not-frequently-enough-asked-questions\"\u003eC\u0026amp;CZ’s Not Frequently Enough asked questions\u003c/h1\u003e\n\u003ch2 id=\"with-answers\"\u003ewith answers!\u003c/h2\u003e\n\u003cp\u003eLast modified: 2018-03-21\u003c/p\u003e\n\u003cp\u003eFor questions, \u003ca href=\"../contact\"\u003econtact us\u003c/a\u003e.\u003c/p\u003e\n\u003chr\u003e\n\u003ch2 id=\"about-this-faq\"\u003eAbout this FAQ\u003c/h2\u003e\n\u003ch3 id=\"contributors\"\u003eContributors\u003c/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePatrick Atoon patricka@cs.kun.nl\u003c/li\u003e\n\u003cli\u003eKees Keijzers keesk@science.ru.nl\u003c/li\u003e\n\u003cli\u003eJos Alsters josal@science.ru.nl\u003c/li\u003e\n\u003cli\u003ePeter van Campen Peter.vanCampen@science.ru.nl\u003c/li\u003e\n\u003cli\u003eSimon Oosthoek S.Oosthoek@science.ru.nl\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch2 id=\"linux-shells\"\u003eLinux shells\u003c/h2\u003e\n\u003ch3 id=\"what-is-a-shell\"\u003eWhat is a shell?\u003c/h3\u003e\n\u003cp\u003eThe shell is a program that interprets the user’s commands and executes\nthem on the Operating System. There are many kinds of shells, which have\ndifferent interpreted languages in which to write commands.\u003c/p\u003e","title":"Faq unix"},{"content":"The program FoxIt PDF Reader can be used as an alternative to Adobe Reader, it is a free program to view or print PDF files.\nOne reason to sometimes not use Adobe Reader is that Adobe Reader 8 produces PostScript that HP4250/HP4350 printers can’t handle, not even after a firmware upgrade. Therefore C\u0026amp;CZ switched to using the (slower) PCL-driver for almost all HP4250/HP4350 printers.\n","permalink":"https://cncz.science.ru.nl/howto/foxit-pdf-reader/","summary":"\u003cp\u003eThe program \u003ca href=\"http://www.foxitsoftware.com/pdf/rd_intro.php\" target=\"_blank\"\u003eFoxIt PDF\nReader\u003c/a\u003e can be used as an\nalternative to Adobe Reader, it is a free program to view or print PDF\nfiles.\u003c/p\u003e\n\u003cp\u003eOne reason to sometimes not use Adobe Reader is that Adobe Reader 8\nproduces PostScript that HP4250/HP4350 printers can’t handle, not\neven after a firmware upgrade. Therefore C\u0026amp;CZ switched to using the\n(slower) PCL-driver for almost all HP4250/HP4350 printers.\u003c/p\u003e","title":"FoxIt PDF Reader"},{"content":"Still unclear what the cause is, several links are strongly degraded. Update: A defective switch has been replaced.\n","permalink":"https://cncz.science.ru.nl/cpk/1296/","summary":"\u003cp\u003eStill unclear what the cause is, several links are strongly degraded.\nUpdate: A defective switch has been replaced.\u003c/p\u003e","title":"Network failure datacenter"},{"content":"A new version (2022b SR1) of OriginLabPro, software for scientific graphing and data analysis, can be found on the Install-disk. See the website of OriginLab for all info on the new version. The license server supports this new version. Departments within FNWI can request installation and license info from C\u0026amp;CZ, also for standalone use. Installation on C\u0026amp;CZ managed PCs is being planned. In case of questions contact C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2022-09-01_new-version-of-originlabpro-2022b-sr1/","summary":"\u003cp\u003eA new version (2022b SR1) of \u003ca href=\"/howto/originlab/\"\u003eOriginLabPro\u003c/a\u003e,\nsoftware for scientific graphing and data analysis, can be found on the\n\u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e-disk. See \u003ca href=\"https://www.originlab.com/2022b\" target=\"_blank\"\u003ethe website of\nOriginLab\u003c/a\u003e for all info on the new\nversion. The license server supports this new version. Departments\nwithin FNWI can request installation and license info from C\u0026amp;CZ, also\nfor standalone use. Installation on C\u0026amp;CZ managed PCs is being planned.\nIn case of questions contact \u003ca href=\"/howto/contact/\"\u003eC\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e","title":"New version of OriginLabPro (2022b SR1)"},{"content":"The C\u0026amp;CZ yearly day out is scheduled for Thursday afternoon September 20. C\u0026amp;CZ can be reached in case of serious disruptions of services.\n","permalink":"https://cncz.science.ru.nl/news/2022-09-01_ccz-day-out-thursday-afternoon-september-22/","summary":"\u003cp\u003eThe C\u0026amp;CZ yearly day out is scheduled for Thursday afternoon September\n20. C\u0026amp;CZ can be reached in case of serious disruptions of services.\u003c/p\u003e","title":"C\u0026CZ day out: Thursday afternoon September 22"},{"content":"JupyterHub is a multi-user Hub that spawns, manages, and proxies multiple instances of the single-user Jupyter notebook server. It can offer notebook servers to a class of students, a scientific research project, or a high-performance computing group.\nPlease contact C\u0026amp;CZ if you plan to use or are interested in using the JupyterHub for your course or project.\nLogin The JupyterHub is available via https://jupyterhub22.science.ru.nl and you can login with your Science username / password combination.\nNote: If you are not on campus, you need to use VPN.\nAssignment Handling For the creating and grading of assignments within the JupyterHub you can use the NBGrader extension. It allows instructors to easily create Jupyter notebook-based assignments that include both coding exercises and written free-responses. NBGrader also provides a streamlined interface for quickly grading completed assignments via an auto-grading functionality.\nPlease contact C\u0026amp;CZ if you like to use NBGrader for one of your courses.\nFile Exchange For the distribution of files you can use the NBGitPuller extension. This allows to distribute content from a git repository to a JupyterHub user via a simple link.\nNBGitPuller Usage Creating the NBGitPuller Download Link To pull the content of a git repository to JupyterHub’s local directory we first need to create a link via https://jupyterhub.github.io/nbgitpuller/link?hub=https://jupyterhub22.science.ru.nl. [ADD SCREENSHOT]\nWe have to fill a few fields to be able to generate the link:\nJupyterHub URL: https://jupyterhub22.science.ru.nl/ Git Repository URL: URL of your publicly available git repository File to open: The first file to open; not particularly important Afterwards, you can copy the generated link and share it among the students.\nUsing the NBGitPuller Download Link For students to pull the content of the repository successfully, they have to execute the following steps in order:\nlogin to the JupyterHub spawn a new session click on the link (from above) in the same browser. Once done successfully in this order, students will be able to pull the content of the repository to their home directories.\nAvailable Programming Languages The default kernel (ipykernel) allows to use Python. Many other languages such as Julia, C++, or Fortran, in addition to Python, may be used in the notebooks as well. Here you can find a list of possible kernels / programming languages. Please contact C\u0026amp;CZ if you like to use one of them.\n","permalink":"https://cncz.science.ru.nl/howto/jupyterhub/","summary":"\u003cp\u003e\u003ca href=\"https://jupyterhub.readthedocs.io\" target=\"_blank\"\u003eJupyterHub\u003c/a\u003e is a multi-user Hub that\nspawns, manages, and proxies multiple instances of the single-user\nJupyter notebook server. It can offer notebook servers to a class of\nstudents, a scientific research project, or a high-performance computing\ngroup.\u003c/p\u003e\n\u003cp\u003ePlease \u003ca href=\"/howto/contact/\"\u003econtact C\u0026amp;CZ\u003c/a\u003e if you plan to use or are\ninterested in using the \u003cstrong\u003eJupyterHub\u003c/strong\u003e for your course or project.\u003c/p\u003e\n\u003ch2 id=\"login\"\u003eLogin\u003c/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eJupyterHub\u003c/strong\u003e is available via \u003ca href=\"https://jupyterhub22.science.ru.nl\" target=\"_blank\"\u003ehttps://jupyterhub22.science.ru.nl\u003c/a\u003e\nand you can login with your \u003cstrong\u003eScience\u003c/strong\u003e username / password combination.\u003c/p\u003e","title":"JupyterHub"},{"content":"NBGrader is a system for assigning and grading Jupyter notebooks.\nStudent Interface Using the assignment list extension within the JupyterHub, students may conveniently view, fetch, submit, and validate their assignments.\nFor details see: https://nbgrader.readthedocs.io/en/stable/user_guide/highlights.html#student-interface\nInstructor Interface The NBGrader services guide the instructor and teaching assistants through assignment and grading tasks using the familiar JupyterHub environment.\nFor details see: https://nbgrader.readthedocs.io/en/stable/user_guide/highlights.html#instructor-interface\n","permalink":"https://cncz.science.ru.nl/howto/nbgrader/","summary":"\u003cp\u003eNBGrader is a system for assigning and grading Jupyter notebooks.\u003c/p\u003e\n\u003ch2 id=\"student-interface\"\u003eStudent Interface\u003c/h2\u003e\n\u003cp\u003eUsing the assignment list extension within the JupyterHub, students may\nconveniently view, fetch, submit, and validate their assignments.\u003c/p\u003e\n\u003cp\u003eFor details see:\n\u003ca href=\"https://nbgrader.readthedocs.io/en/stable/user_guide/highlights.html#student-interface\" target=\"_blank\"\u003ehttps://nbgrader.readthedocs.io/en/stable/user_guide/highlights.html#student-interface\u003c/a\u003e\u003c/p\u003e\n\u003ch2 id=\"instructor-interface\"\u003eInstructor Interface\u003c/h2\u003e\n\u003cp\u003eThe NBGrader services guide the instructor and teaching assistants\nthrough assignment and grading tasks using the familiar JupyterHub\nenvironment.\u003c/p\u003e\n\u003cp\u003eFor details see:\n\u003ca href=\"https://nbgrader.readthedocs.io/en/stable/user_guide/highlights.html#instructor-interface\" target=\"_blank\"\u003ehttps://nbgrader.readthedocs.io/en/stable/user_guide/highlights.html#instructor-interface\u003c/a\u003e\u003c/p\u003e","title":"Nbgrader"},{"content":"The Internal Affairs department manages a contract with an external specialized company for the secure destruction/shredding of data carriers. The secure metal container that is used as a temporary cache, can be found at C\u0026amp;CZ as of the new academic year. Employees and students of the Faculty of Science can put data carriers with sensitive data in the container themselves at C\u0026amp;CZ. The C\u0026amp;CZ helpdesk can help recognizing and removing data carriers from desktops, laptops etc.\n","permalink":"https://cncz.science.ru.nl/news/2022-08-18_shreddingdestruction-of-data-carriers-hard-drives-at-ccz/","summary":"\u003cp\u003eThe Internal Affairs department manages a contract with an external\nspecialized company for the secure destruction/shredding of data\ncarriers. The secure metal container that is used as a\ntemporary cache, can be found at C\u0026amp;CZ as of the new academic year.\nEmployees and students of the Faculty of Science can put data carriers\nwith sensitive data in the container themselves at C\u0026amp;CZ. The C\u0026amp;CZ\nhelpdesk can help recognizing and removing data carriers from desktops,\nlaptops etc.\u003c/p\u003e","title":"Shredding/destruction of data carriers / hard drives at C\u0026CZ"},{"content":"Because there was too much noise in the new rooms, C\u0026amp;CZ will temporarily move back to the third floor of the Huygens building. We expect that the final move to the ground floor will be in December 2022.\n","permalink":"https://cncz.science.ru.nl/news/2022-07-15_ccz-moves-back-to-hg03055/","summary":"\u003cp\u003eBecause there was too much noise in the new rooms, C\u0026amp;CZ will temporarily\nmove back to the third floor of the Huygens building. We expect that the\nfinal move to the ground floor will be in December 2022.\u003c/p\u003e","title":"CCZ moves back to HG03.055"},{"content":"A new version of Mathematica (13.1.0) has been installed on all C\u0026amp;CZ managed Linux systems, older versions can still be found in /vol/mathematica. The installation files for Windows, Linux and macOS can be found on the Install-disk, also for older versions of Mathematica. Installation and license info can be requested from C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2022-07-12_new-version-of-mathematica-1310/","summary":"\u003cp\u003eA new version of \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e (13.1.0) has been\ninstalled on all C\u0026amp;CZ managed Linux systems, older versions can still be\nfound in \u003ccode\u003e/vol/mathematica\u003c/code\u003e. The installation files for Windows, Linux\nand macOS can be found on the \u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e-disk,\nalso for older versions of Mathematica. Installation and license info\ncan be \u003ca href=\"/howto/contact/\"\u003erequested from C\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e","title":"New version of Mathematica (13.1.0)"},{"content":"C\u0026amp;CZ Ethernet guide All network info is, mainly automatically, saved in a database. Some info can be looked up below by searching on MAC address, IP address, room number, outlet number or hostname.\nFNWI Ethergids\nDid you find an inaccuracy? Please contact us[contact us].\n","permalink":"https://cncz.science.ru.nl/howto/netwerk-ethergids/","summary":"\u003ch2 id=\"ccz-ethernet-guide\"\u003eC\u0026amp;CZ Ethernet guide\u003c/h2\u003e\n\u003cp\u003eAll network info is, mainly automatically, saved in a database. Some\ninfo can be looked up below by searching on MAC address, IP address,\nroom number, outlet number or hostname.\u003c/p\u003e\n\u003cp\u003e\u003ca href=\"https://rbsgids.science.ru.nl/cgi-scripts/ethergids.php\" target=\"_blank\"\u003eFNWI Ethergids\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eDid you find an inaccuracy? Please \u003ca href=\"../contact\"\u003econtact us\u003c/a\u003e[contact us].\u003c/p\u003e","title":"Netwerk ethergids"},{"content":"The repair procedure depends on the firm that sold the machine. Whether the repair is free of charge or not, depends on the precise terms of warranty (and whether the repair is within the period of warranty or not).\nNormally, PC’s sold by standard PC supplier Dustin have a warranty period of 3 years. But: be aware that this does not hold for all machines. Read the website of Dustin (formerly CentralPoint) carefully when ordering. For other suppliers and products, a different warranty period may be applicable. Repairs can be ordered through C\u0026amp;CZ: within as well as outside of the period of warranty. We can also advise when a defect is suspected.\nThe supplier or C\u0026amp;CZ will inform you about the day of repair. You have to make sure that the technician of the supplier has access to the apparatus on that day.\nOrdering a repair can be done through email, telephone or a visit to our office.\nN.B.1 The user accepts possible costs which result from this order. An estimate of € 0 does not imply automatically that there will be no costs. This also holds for repairs within the warranty period.\nN.B.2 In case the costs for repair exceed € 125,- an e-mail with a specified report and the repair number will be sent to the owner. The owner must, subsequently, inform the company whether the repair has to be carried out or not.\n","permalink":"https://cncz.science.ru.nl/howto/reparaties/","summary":"\u003cp\u003eThe repair procedure depends on the firm that sold the machine. Whether\nthe repair is free of charge or not, depends on the precise terms of\nwarranty (and whether the repair is within the period of warranty or\nnot).\u003c/p\u003e\n\u003col\u003e\n\u003cli\u003eNormally, PC’s sold by \u003ca href=\"/howto/huisleverancier-pcs/\"\u003estandard PC supplier Dustin\u003c/a\u003e\nhave a warranty period of 3 years. But: be aware that this does not hold for all machines. Read\nthe \u003ca href=\"http://www.dustin.nl/\" target=\"_blank\"\u003ewebsite of Dustin (formerly CentralPoint)\u003c/a\u003e carefully when ordering.\u003c/li\u003e\n\u003cli\u003eFor other suppliers and products, a different warranty period may be\napplicable.\u003c/li\u003e\n\u003c/ol\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eRepairs can be ordered through C\u0026amp;CZ: \u003cstrong\u003ewithin as well as outside of\nthe period of warranty\u003c/strong\u003e. We can also advise when a defect is\nsuspected.\u003c/p\u003e","title":"Reparaties"},{"content":"Standard supplier: Dustin (formerly CentralPoint/Scholten Awater) The standard supplier of pc’s for Radboud University is Dustin (formerly CentralPoint/Scholten Awater since March, 2006, after several European tenders.\nLimited selection The ISC picks a limited selection of tested products with often a favourable price. These can be seen via BASS at CentralPoint in “Mijn assortiment” as RU-laptop, RU-desktop etc.\nWebsite From within the purchasing system BASS you can reach the website of CentralPoint with RU pricing.\nOrdering Just like other orders, through the financial system delivered to the purchasing department. Quotes can be attached.\nBasic configuration There will always be some basic configurations for desktop, monitor and laptop. These basic pc’s have been tested: they can be installed over the network with a standard procedure. Take note: Radboud University has a site license for an UPGRADE of MS-Windows for desktops. You can buy the cheapest version of MS-Windows (home-edition, included in the basic pc). When installing over the network, the professional version will be installed. If you don’t use the network installation, you can borrow Windows CD/DVD’s from C\u0026amp;CZ.\nWarranty See Dutch version.\nPackaging See Dutch version.\nDisposal See Dutch version.\n","permalink":"https://cncz.science.ru.nl/howto/huisleverancier-pcs/","summary":"\u003ch3 id=\"standard-supplier-dustin-formerly-centralpointscholten-awater\"\u003eStandard supplier: Dustin (formerly CentralPoint/Scholten Awater)\u003c/h3\u003e\n\u003cp\u003eThe standard supplier of pc’s for Radboud University is \u003ca href=\"http://www.dustin.nl/\" target=\"_blank\"\u003eDustin\n(formerly CentralPoint/Scholten Awater\u003c/a\u003e since\nMarch, 2006, after several European tenders.\u003c/p\u003e\n\u003ch3 id=\"limited-selection\"\u003eLimited selection\u003c/h3\u003e\n\u003cp\u003eThe \u003ca href=\"http://www.ru.nl/isc\" target=\"_blank\"\u003eISC\u003c/a\u003e picks a limited selection of tested\nproducts with often a favourable price. These can be seen via BASS at\nCentralPoint in “Mijn assortiment” as RU-laptop, RU-desktop etc.\u003c/p\u003e\n\u003ch3 id=\"website\"\u003eWebsite\u003c/h3\u003e\n\u003cp\u003eFrom within \u003ca href=\"https://www.bass.ru.nl\" target=\"_blank\"\u003ethe purchasing system BASS\u003c/a\u003e you can\nreach the \u003ca href=\"http://www.centralpoint.nl/\" target=\"_blank\"\u003ewebsite of CentralPoint\u003c/a\u003e with RU\npricing.\u003c/p\u003e","title":"Huisleverancier PC's"},{"content":"There are three major types of web sites in use at the Faculty of Science:\nLAMP (Linux, Apache, MySQL, PHP/Perl/Python) and MediaWiki based general purpose web servers (possibly offering some high level content management system). These sites are hosted, managed and supported by C\u0026amp;CZ. All content management tasks are performed by the respective web site owners: institutes and scientific departments, student organisations, service departments, etc. Please contact C\u0026amp;CZ for more information about WWW_Services. Externally hosted web sites (including sites hosted by ILS) for which custom management and support agreements may be in place. Web sites based on the Radboud University’s Content Management System (CMS) (also known as IPROX, which is the name of the management software suite). ","permalink":"https://cncz.science.ru.nl/howto/website/","summary":"\u003cp\u003eThere are three major types of web sites in use at the Faculty of\nScience:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eLAMP (Linux, Apache, MySQL, PHP/Perl/Python) and MediaWiki based\ngeneral purpose web servers (possibly offering some high level\ncontent management system). These sites are hosted, managed and\nsupported by C\u0026amp;CZ. All content management tasks are performed by the\nrespective web site owners: institutes and scientific departments,\nstudent organisations, service departments, etc. Please contact C\u0026amp;CZ\nfor more information about \u003ca href=\"/howto/www-service/\"\u003eWWW_Services\u003c/a\u003e.\u003c/li\u003e\n\u003cli\u003eExternally hosted web sites (including sites hosted by ILS) for\nwhich custom management and support agreements may be in place.\u003c/li\u003e\n\u003cli\u003eWeb sites based on the Radboud University’s Content Management\nSystem (\u003ca href=\"/howto/cms/\"\u003eCMS\u003c/a\u003e) (also known as IPROX, which is the\nname of the management software suite).\u003c/li\u003e\n\u003c/ul\u003e","title":"Website"},{"content":"Telephone and email guide You can search this guide for (part of the) name, phone number, room, department etc. If you are calling from outside The Netherlands first dial +31 24 36 and then the internal phone number.\nRBS Departments within the Faculty of Science can enter or adjust their guide entries themselves via RBS. All telephone contact persons have a login to edit directory data directly in RBS.\nThe telephone contact person also receives the telephone cost specifications, can request or cancel changes and subscriptions and, if there is reason to do so, receives information from ILS about the telephony facilities within the RU (eg rate changes, malfunctions, maintenance).\nILS manages the telephone switch. They also charge subscriptions and call costs.\nFound an error in the guide? Please contact your secretariat.\nHere you can find a list of telephone contact persons. For questions, mail to postmaster. FNWI phone contact persons manage their departments phone directory entries in RBS. ","permalink":"https://cncz.science.ru.nl/howto/phone-mail-guide/","summary":"\u003ch1 id=\"telephone-and-email-guide\"\u003eTelephone and email guide\u003c/h1\u003e\n\u003ciframe src=\"https://rbsgids.science.ru.nl/cgi-scripts/telgids.php\" width='100%' height='300px'\u003e\u003c/iframe\u003e\n\n\u003cp\u003eYou can search this guide for (part of the) name, phone number, room,\ndepartment etc. If you are calling from outside The Netherlands first\ndial \u003ccode\u003e+31 24 36\u003c/code\u003e and then the internal phone number.\u003c/p\u003e\n\u003ch2 id=\"rbs\"\u003eRBS\u003c/h2\u003e\n\u003cp\u003eDepartments within the Faculty of Science can enter or adjust their guide entries themselves via \u003ca href=\"http://www.radboudnet.nl/rbs/\" target=\"_blank\"\u003eRBS\u003c/a\u003e. All \u003cem\u003etelephone contact persons\u003c/em\u003e have a login to edit directory data directly in RBS.\u003c/p\u003e\n\u003cp\u003eThe telephone contact person also receives the telephone cost specifications, can request or cancel changes and subscriptions and, if there is reason to do so, receives information from ILS about the telephony facilities within the RU (eg rate changes, malfunctions, maintenance).\u003c/p\u003e","title":"Faculty telephone and email guide"},{"content":"Science software licences negotiated by C\u0026amp;CZ All info can be found on the Science licenses pages. Questions: please contact C\u0026amp;CZ.\nMost software can be found on the install share. On a PC with MS-Windows (or a Linux “Samba client”), one can connect to the service:\n\\install.z.science.ru.nl\\install RU software licences negotiated by ILS ILS negotiated license agreements for the RU for a number of software packages. This makes that software relatively cheap (bulk license) or even free (campus license) for use by students and employees.\nA lot of license software can be bought at Surfspot by employees and students by using their RU account and the corresponding RU-password. Some of this (primarily MS-Windows) software can be borrowed from C\u0026amp;CZ.\nSecurity: F-Secure for Windows/macOS computers purchased with RU funds that are privately administered, please contact C\u0026amp;CZ. for 1 privately owned device one can get free of charge “F-Secure Safe (RU Nijmegen)” for 1 year at Surfspot, see the ILS protect your computer page. ","permalink":"https://cncz.science.ru.nl/howto/ru-software-licenties/","summary":"\u003ch2 id=\"science-software-licences-negotiated-by-ccz\"\u003eScience software licences negotiated by C\u0026amp;CZ\u003c/h2\u003e\n\u003cp\u003eAll info can be found on the\n\u003ca href=\"https://cncz.pages.science.ru.nl/licenses/\" target=\"_blank\"\u003eScience licenses pages\u003c/a\u003e.\nQuestions: please \u003ca href=\"../contact\"\u003econtact C\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eMost software can be found on the install share.\nOn a PC with MS-Windows (or a Linux “Samba client”), one can connect\nto the service:\u003c/p\u003e\n\u003cpre tabindex=\"0\"\u003e\u003ccode\u003e\\install.z.science.ru.nl\\install\n\u003c/code\u003e\u003c/pre\u003e\u003ch2 id=\"ru-software-licences-negotiated-by-ils\"\u003eRU software licences negotiated by ILS\u003c/h2\u003e\n\u003cp\u003eILS negotiated license agreements for the RU for \u003ca href=\"https://www.ru.nl/en/services/campus-facilities-buildings/ict/software\" target=\"_blank\"\u003ea number of software\npackages\u003c/a\u003e.\nThis makes that software relatively cheap (bulk license) or even\nfree (campus license)\nfor use by students and employees.\u003c/p\u003e","title":"Software licences"},{"content":"Prerequisities Same as for gaussian set-up environment (check gaussian) General topics General topics like queue handling, queues and similar are covered in the gaussian wiki entry.\nSubmitting jobs Basic syntax of crest submission script is following:\ncnorris@lilo7:~$ Crest structure.xyz\nwhere structure.xyz is the structure which you want to submit.\nMore advanced syntax looks like this:\ncnorris@lilo7:~$ Crest structure.xyz -chrg 1 -uhf 0 -quick\nHere I’ve added quick keyword which makes the screening less in-depth but it goes much quicker. I also added chrg keyword to define charge and uhf keyword to define spin state. For more detailed description and full list of keywords, please refer to crest command line arguments documentation.\nProcessing calculations Once calculation is finished, conformers list and best structure from crest structure pool is received. There is also a folder where rotamers file and other files are stored.\nAs Crest uses very cheap calculations, the energies are not fully reliable. After running crest you should go through the conformers list, pick the conformations which differ substantially (preferably ~10 structures) and run them with a more precise calculation (for example #B97/SDD opt in Gaussian). Based on the outcome of this second calculation batch you should decide which structures you want to submit for expensive calculations, frequencies jobs and similar.\nDisclaimer Crest is a metadynamics tool which is very useful for generating low-energy structure candidates. The crest-best does not have to be the best structure, but the set of structures (crest-conformers) usually has the best available conformers within. Crest is a powerful and very useful tool, but it should not be used uncritically. Keep attention to the correct definition of charge and spin. If you think there is a way to improve this guide, please contact me (Jan).\nHappy computing! ;)\n","permalink":"https://cncz.science.ru.nl/howto/crest/","summary":"\u003ch2 id=\"prerequisities\"\u003ePrerequisities\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSame as for \u003ca href=\"/howto/gaussian/\"\u003egaussian\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eset-up environment (check \u003ca href=\"/howto/gaussian/\"\u003egaussian\u003c/a\u003e)\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch2 id=\"general-topics\"\u003eGeneral topics\u003c/h2\u003e\n\u003cp\u003eGeneral topics like queue handling, queues and similar are covered in\nthe \u003ca href=\"/howto/gaussian/\"\u003egaussian\u003c/a\u003e wiki entry.\u003c/p\u003e\n\u003ch2 id=\"submitting-jobs\"\u003eSubmitting jobs\u003c/h2\u003e\n\u003cp\u003eBasic syntax of crest submission script is following:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003ecnorris@lilo7:~$ Crest structure.xyz\u003c/code\u003e\u003c/p\u003e\n\u003cp\u003ewhere \u003cem\u003estructure.xyz\u003c/em\u003e is the structure which you want to submit.\u003c/p\u003e\n\u003cp\u003eMore advanced syntax looks like this:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003ecnorris@lilo7:~$ Crest structure.xyz -chrg 1 -uhf 0 -quick\u003c/code\u003e\u003c/p\u003e\n\u003cp\u003eHere I’ve added quick keyword which makes the screening less in-depth\nbut it goes much quicker. I also added chrg keyword to define charge and\nuhf keyword to define spin state. For more detailed description and full\nlist of keywords, please refer to \u003ca href=\"https://xtb-docs.readthedocs.io/en/latest/crestcmd.html\" target=\"_blank\"\u003ecrest command line arguments\ndocumentation\u003c/a\u003e.\u003c/p\u003e","title":"Crest"},{"content":"Visiting address C\u0026amp;CZ is situated in the Huygens building, ground floor, next to the entrance of wing 5. The room number is HG00.051, the systematics behind the room numbers is explained on the website of the [housing \u0026amp; logistics department HL](http://www.ru.nl/fnwi/ihz https://www.radboudnet.nl/science/faculty-services/faculty-services-d-tot-en-met-k/housing-logistics-hl/).\nC\u0026amp;CZ, FNWI, Radboud University Nijmegen HG00.051 Heyendaalseweg 135 6525 AJ Nijmegen Postal address Radboud Universiteit Nijmegen Faculty of Science C\u0026amp;CZ Postbus 9010 6500 GL Nijmegen Further questions or information contact C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/howto/adres/","summary":"\u003ch2 id=\"visiting-address\"\u003eVisiting address\u003c/h2\u003e\n\u003cp\u003eC\u0026amp;CZ is situated in the Huygens building, ground floor, next to the\nentrance of wing 5. The room number is HG00.051, the \u003ca href=\"https://www.ru.nl/fnwi/faculteit/organisatie/ondersteunende-diensten/huisvesting-logistiek/kopie/\" target=\"_blank\"\u003esystematics behind\nthe room numbers\u003c/a\u003e\nis explained on the website of the [housing \u0026amp; logistics department HL](\u003ca href=\"http://www.ru.nl/fnwi/ihz\" target=\"_blank\"\u003ehttp://www.ru.nl/fnwi/ihz\u003c/a\u003e \u003ca href=\"https://www.radboudnet.nl/science/faculty-services/faculty-services-d-tot-en-met-k/housing-logistics-hl/%29\" target=\"_blank\"\u003ehttps://www.radboudnet.nl/science/faculty-services/faculty-services-d-tot-en-met-k/housing-logistics-hl/)\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"highlight\"\u003e\u003cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;\"\u003e\u003ccode class=\"language-txt\" data-lang=\"txt\"\u003e\u003cspan style=\"display:flex;\"\u003e\u003cspan\u003eC\u0026amp;CZ, FNWI, Radboud University Nijmegen\n\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"display:flex;\"\u003e\u003cspan\u003eHG00.051\n\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"display:flex;\"\u003e\u003cspan\u003eHeyendaalseweg 135\n\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"display:flex;\"\u003e\u003cspan\u003e6525 AJ Nijmegen\n\u003c/span\u003e\u003c/span\u003e\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\u003ch2 id=\"postal-address\"\u003ePostal address\u003c/h2\u003e\n\u003cdiv class=\"highlight\"\u003e\u003cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;\"\u003e\u003ccode class=\"language-txt\" data-lang=\"txt\"\u003e\u003cspan style=\"display:flex;\"\u003e\u003cspan\u003eRadboud Universiteit Nijmegen\n\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"display:flex;\"\u003e\u003cspan\u003eFaculty of Science\n\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"display:flex;\"\u003e\u003cspan\u003eC\u0026amp;CZ\n\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"display:flex;\"\u003e\u003cspan\u003ePostbus 9010\n\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"display:flex;\"\u003e\u003cspan\u003e6500 GL Nijmegen\n\u003c/span\u003e\u003c/span\u003e\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\u003cp\u003eFurther questions or information \u003ca href=\"/howto/contact\"\u003econtact C\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e","title":"Address"},{"content":" Info\nthis document needs to be updated\nGeneral Péage is the print/scan/copy system of Radboud University for staff and students. As of March 2019 the new server is print.hosting.ru.nl and the print queue “FollowMe”. The Library of Science has passes for guests. General information can be found on the Péage website.\nOn this page, C\u0026amp;CZ provides information specific for staff and students of FNWI.\nTerminology MFP: multifunctional printer (that can print, copy and scan) PrintNightmare problem workaround Since ca. September 22, 2021, Peage doesn’t work anymore on self managed/BYOD Windows/macOS/Linux computers. That day the ISC installed the patches for the security vulnerablility PrintNightmare on the print servers. The ISC and C\u0026amp;CZ thereafter introduced a workaround for their managed computers. A workaround for all computers is using the web upload on the Peage website. Since October 28, 2021, uploaded jobs were printed in color. Since January 1, 2024 uploaded jobs were printed in black and white (B\u0026amp;W) and double-sided.\nSelf managed Windows pcs can also use the C\u0026amp;CZ workaround. This workaround is based on an old printer installation method of the Windows 98/XP age. This is not a real solution. If Microsoft solves the ‘PrintNightmare’ problems, this printer installation should be removed. We do not guarantee that this workaround works correctly. Below you’ll find steps to introduce the workaround. The C\u0026amp;CZ helpdesk can assist, when you find this troublesome.\nIt is important that your RU credentials have been entered in the Credential Manager:\nInternet or network address: print.hosting.ru.nl\nUser name: [Givenname.Surname@ru.nl]\nPassword: [your RU password]\nIf you entered this correctly, then Windows Explorer will show a list of printers when you type \\\\print.hosting.ru.nl\\ in the address bar.\nDownload the FollowMe driver from the Konica-Minolta download centre. Choose Product Type: A3 MultiFunctional Colour and Product: C658.\nTo be compatible with the drivers installed by the ISC, choose Version 11.1.2.0 Jul 26, 2018 PCL6.\nAt the time of writing this workaround, this resulted in a long URL at dl.konicaminolta.eu. Save the driver zipfile in a known location and unzip it.\nGo from ‘Start’ -\u0026gt; ‘Settings’ -\u0026gt; ‘Devices’, to ‘Printers \u0026amp; scanners’ and start ‘Add a printer or scanner’. An option appears ‘The printer that I want isn’t listed’, select that option..\nA window appears ‘Find a printer by other options’. Select ‘Add a local printer or network printer with manual settings’. Click ‘next’. ‘Choose a printer port’ appears, leave this at ‘Use an existing port: LPT1 (Printer Port)’ for the time being. Click ‘next’.\nA window appears ‘Install the printer driver’, select ‘Have Disk…’ and browse to the unzipped driver. Select the only ‘INF’ file and click the ‘Open’ button and ‘OK’. From the different models, choose `KONIKA MINOLTA C658SeriesPCL’ and click ‘Next’.\nA window ‘Type a printer name’ appears with already filled-in ‘KONICA MINOLTA C658SeriesPCL’. Click ‘Next’. A request for the Administrator password appears. After entering that, the driver is installed.\nA window ‘Printer Sharing’ appears, pick the default ‘Do not share this printer’ and choose ‘Next’ and ‘Finish’.\nWe are going to change the installed printer. In ‘Settings’ -\u0026gt; ‘Devices’ -\u0026gt; ‘Printers \u0026amp; scanners’: select the installed printer and click ‘Manage’. After that, click ‘Printer properties’.\nA new window ‘KONICA MINOLTA C658SeriesPCL Properties’ appears. In the tab ‘Ports’ choose ‘Add Port…’, select ‘Local Port’ and after that ‘New Port…’. In the window ‘Port Name’ with the ‘Enter a port name:’ field, fill in ‘\\\\print.hosting.ru.nl\\FollowMe’. Cllik ‘OK’, ‘Close’ and ‘Close’.\nKnown problems An E-number user can’t print. RBS-management can solve that: Nummer Kamer Naam Afdeling Email\n52246 HG02.047 Ir. J.J. Zijlstra, (Jan-Jetze) Facbureau NW J.Zijlstra@science.ru.nl\nRemote Downlevel Document: When printing from Linux, the MFP shows “Remote Downlevel Document” instead of the name of the printed file. Evince print in A3 format. Remove the file ~/.config/evince/print-settings. Okular on Ubuntu 18.04 lacks Advanced Options to print eg in color - Ubuntu problem. lpq problem. Update default printer. Edit the file ~/.cups/lpoptions. In the Linux Document Viewer you need to print twice to get one output. Please remove printers that are no longer part of the print system from your computer. [cups-2.2.7 en smbclient-4.8.1 hebben een API discrepantie waardoor printen niet werkt op Linux (gezien op Arch Linux). Een oplossing is om /usr/lib/cups/backend/smb te patchen (of smbclient te updaten).][cups-2.2.7 and smbclient-4.8.1 conflict in their command-line API which breaks printing on Linux (seen on Arch Linux). A solution is to patch /usr/lib/cups/backend/smb (or to update smbclient).] Printing with Péage Login with campuscard/ru-card Before you can use your campuscard/ru-card to login onto the printer you first have to link the card to your u-account:\nKeep your to the front side of the printer at the place where the card sticker is. When the printer recognizes the card it will popup a new window with which you can login. Login (only once) with your U, E, S of F number and RU-password The next time you place your campuscard/ru-card before the printer you are immediately logged in.\nUser groups Péage has 1 printserver and 1 printqueue for FollowMe printing:\nprintserver printqueue UNC - Windows style URI - IPP style\nprint.hosting.ru.nl FollowMe \\\\print.hosting.ru.nl\\FollowMe smb://print.hosting.ru.nl/FollowMe\nFor smaller printers without display/keyboard, the direct printqueue of the printer must be used:\nprintserver printqueue UNC - Windows style URI - IPP style\nprint.hosting.ru.nl KM-xxxx \\\\print.hosting.ru.nl\\KM-xxxx smb://print.hosting.ru.nl/KM-xxxx\nPéage portal: Printing with Péage on any Internet device With the Péage portal you can print from smartphone, tablet and every Internet-device connected to the university network to Peage, through e.g. web upload. A web upload always prints double-sided.\nPrinting with Péage on a C\u0026amp;CZ managed Windows machine The printer “FollowMeScience” is listed at the server “print.science.ru.nl”. To let this work, your U- or s-number must be registered at C\u0026amp;CZ. You can check this on the Do-It-Yourself site.\nPrinting with Péage on a self managed Windows 7/8/8.1/10 machine The instructions below are valid if you logged in with your Science account or a personal account. If you logged in with RU\\U-number or RU\\s-number, go directly to step 4. N.B.: your settings are not saved then.\nTo attach the printer, you need your RU-account (u/f/e/s-number and RU-password, not the Peage PIN code).\nStep 1\nSelect Start, in the Help / Search area enter Credential Manager and launch the application found.\nStep 2\nThe Windows Vault appears. Click on Add a Windows credential next to the header Windows Credentials. Enter credential data: Internet or network address: print.hosting.ru.nl User name: ru\\ followed by your RU-account, eg. ru\\u123456 (staff) or ru\\s123456 (students) Password: your matching RU-password (not your Peage PIN code)\nFinally click OK and close the Credential Manager.\nStep 3\nPress the “windows” key and “r” at the same time. Fill out \\\\print.hosting.ru.nl in the open bar and press enter or click ok\nStep 4\nDouble-click the FollowMe printer. It will install automatically when the printer que pops up, the installation is complete.\nStep 5\nContinue with Printing a job at the MFP\nPrinting with Péage on a Mac OS X machine The ISC has made an installation tool available to add Péage printers: See Mac OS X instructions.\nManual installation You need your RU-account (u/f/e/s-number and RU-password, not your Peage PIN code) to send a print job to the printer.\nStep 1\nSelect System Preferences, select Printers \u0026amp; Scanners\nStep 2\nClick on the + (plus) sign below the list of printers. See if you have an item Advanced in the menu bar. Whenever this item is not present: Right click in this menu bar and choose Customize Toolbar…. Drag the item Advanced into the menu bar. Click on Done and, again, click on the item Advanced in the menu bar.\nStep 3\nEnter printer data: Type: Windows printer via spoolss Device: Another Device URL: smb://print.hosting.ru.nl/FollowMe Name: Free to type text field, eg. Peage (this will be the name of the printer in the printer list) Location: Free to type text field, eg. Péage Konica Minolta printers Use: Change Choose a Driver… to the printer driver, eg. Generic Postscript Printer. Remark: if you want to staple your prints, then you need for printing on MacOS to install a specific driver for your specific printer. Unfortunately Konica Minolta doesn’t provide a generic driver for all its printers for MacOS as it does for Windows. If you need stapling only in special occasions then you could ask a colleague with a Windows computer to print it for you stapled. A specific driver for your specific printer can be downloaded from the Konica Minolta website. You also have to configure the specific hardware addons to your specific printer. You can do this in the “printer\u0026amp;scanner” preferences, then select your specific printer left, and then on the right side click the “options supply” button, and go to the Options tab. In this tab set the specific “paper source unit”, “finisher” and “punch unit”. Ask a colleague with a Windows computer to look in its printer configuration to find out which specific “paper source unit”, “finisher” and “punch unit” your printer has. Finally click Add.\nA new window will appear with an option Duplex Printing Unit. Mark the checkbox as active and click OK.\nStep 4\nNow is the time to setup your printing preferences. Click Options \u0026amp; Supplies… and next Options. Our advice: select black-and-white printing and Duplex Printing Unit as your printing defaults.\nStep 5\nThe setup to use your RU-account and RU-password (not your Peage PIN code) is explained next. Find some document you wish to print and send your first print job to this new Péage printer.\nIf your printer is shown in the Dock you will notice a 1 on top of the printer icon. Click on the printer icon to view the print queue. You could also click on the printer in Printers \u0026amp; Scanners in System Preferences. The status will be that the print job has been send, but after a while the status will change to Hold for Authentication. Select the print job in the print queue and click on the button Resume. A dialog window appears requesting your Name and Password. Enter ru\\, followed by your RU-account, eg. ru\\u123456, and the matching RU-password (not your Peage PIN code).\nIf the printer icon is missing from the Dock, the dialog window requesting Name and Password will popup. Login with your RU-account (ru\\u123456) and RU-password (not your Peage PIN code). Select if desired Remember this password in my keychain, so your RU-account and RU-password will be remembered, authentication for print jobs is no more needed. Clicking OK will, after a second (depending on the size of your print job), remove the print job from the queue. The job is then received by the print server and remains in its print queue for final printing.\nStep 6\nContinue with Printing a job at the MFP\nPrinting with Péage on a C\u0026amp;CZ managed Linux machine The printer “FollowMe” is listed. Command line printing with lpr -PFollowMe is possible. To let this work, your U- or s-number must be registered at C\u0026amp;CZ. You can check this on the Do-It-Yourself site.\nPrinting with Péage on a self managed Linux machine You need your RU-account (u/f/e/s-number and RU-password, not your Peage PIN code) to send a print job to the printer.\nBelow a short description how to install the printer on Ubuntu 18.04 (Bionic Beaver). This procedure might work for other recent Linux systems using the Gnome Desktop. Make sure that the packages\nsmbclient python3-smbc dbus-x11 are installed. If not, install them using your package manager.\nStep 1\nIf you are using a C\u0026amp;CZ managed Linux computer, the printer is already installed. Go to step 6. Via Settings visit Printers. Or start the tool system-config-printer tool from the commandline with the command: system-config-printer\nStep 2\nClick below the Printer list on Additional Printer Settings… and next within the pop-up app **Printers\nlocalhost** on the Add button. There might appear a window Authenticate, provide the requested root password. Step 3\nA window New Printer emerges, select Network Printer and then Windows Printer via SAMBA. On the right side you can provide required data: SMB Printer: smb://print.hosting.ru.nl/FollowMe Authentication: Prompt user if authentication is required. If this option is not available then restart the installation with the system-config-printer tool instead which has this option!\nClick on Forward.\nStep 4\nIn the next window you have to choose a driver: Select Provide PPD file. Also select the FollowMe.ppd (Postscript Printer Description) file, which has to be downloaded first via right-clicking the link. Click on Forward. You should see a window Installable Options with settings you can change. If using the correct PPD file no adaptations are needed. Click on Forward.\nStep 5\nProvide the requested data: Printer Name: Peage (use the name of the print queue, see User group) Description: KONICA MINOLTA C759SeriesPS/P Location: Virtual printqueue / available at all Peage KM printers\nClick on Apply. There might appear a window Authenticate At Username type: first the domain prefix ru\\, directly followed by your u/s/e/f-number, e.g. ru\\u123456, and at Password your RU-password (not your Peage PIN code). Select Cancel at the question Would you like to print a test page?.\nStep 6\nFirst stop the cups server before editing the config:\nsudo /etc/init.d/cups stop\nEdit the file /etc/cups/printers.conf and change for this printer\u0026rsquo;s configuration the line\nAuthInfoRequired none\nto\nAuthInfoRequired username,password\nrestart the cups server:\nsudo /etc/init.d/cups start\nStep 7\nYour printer has been installed and is ready to use. It is adviced to first use firefox to make a test print to initialize and store your credentials safely in the gnome keyring. Use firefox because not all linux programs ask for authentication correctly, but will print alright once the credentials are stored correcty in the keyring. As soon as you use the printer, a window will pop up showing the message Authentication is required to print … and also asking for your credentials. It can happen that your print job gets paused requesting authentication. In that case open the print queue and right click on your print job. In the upcoming context menu select the authenticate option. It might be a good idea to keep the print queue applet open and to check for print jobs requesting authentication. At Username type first: the domain prefix ru\\, directly followed by your u/s/e/f-number, e.g. ru\\u123456, and at Password your RU-password (not your Peage PIN code).\nCredentials are stored in the gnome-keyring which can be viewed or modified with the tool seahorse. Before using seahorse you probably need to install it first with your package manager.\nStep 8\nContinue with Printing a job at the MFP\nFix for wrong credentials in keyring Credentials are stored in the gnome-keyring which can be viewed or modified with the tool seahorse. Before using seahorse you probably need to install it first with your package manager.\nmethod 1: Update your password in the gnome-keyring:\nstart the program: \u0026ldquo;Seahorse\u0026rdquo; also called \u0026ldquo;Passwords and Keys\u0026rdquo; at the left sidebar select \u0026ldquo;Logins\u0026rdquo; under the \u0026ldquo;Passwords\u0026rdquo; section. at the right select the entry with label \u0026ldquo;ipp://localhost:631/printers/FollowMe\u0026rdquo; double click this entry to open a popup window in the popup window edit your ru-password close the popup window by pressing the X on the window title bar before it closes the window you are asked: \u0026ldquo;Save changes for this item? answer by pressing \u0026ldquo;OK\u0026rdquo;, and the windows close close the \u0026ldquo;Seahorse/Passwords and Keys\u0026rdquo; program DONE method 2: However sometimes updating your new password in the gnome-keyring doesn’t solve the authentication problem. In that case follow the steps below:\nDelete your current keyrings folder in ~/.local/share/keyrings Logout, and immediately login again. This ensures that the keyring server is restarted, which neatly creates the keyrings/folder again. Check that a new keyrings folder has been created. Start Firefox and print a page. Now you should get an authentication dialog with a checkbox \u0026ldquo;Remember password\u0026rdquo;. Enter your ru credentials and check the checkbox to store your credentials in the gnome keyring. From now on you should be able to print without needing to enter your credentials, because they will taken from your keyring which is made accessible when you logged in with your machine\u0026rsquo;s password. Printing with Péage using smbclient (on Linux) Assuming your U-number is u123456 and you want to print the file “something.pdf”:\nStep 1\nsmbclient -U “ru\\u123456” //print.hosting.ru.nl/FollowMe -c “print something.pdf” Enter RU-password at the prompt and go to a printer to follow the usual procedure. Printing with Péage using CUPS (on Linux) If printing using the smbclient command works, a regular print queue can be set up with CUPS. Usually this requires root access.\nStep 1\nWith a browser open: https://localhost:631 and select “Adding Printers and Classes”, “Add Printer” [Username: root, Password: \u0026lt;rootpassword\u0026gt;“, Other Network Printers:”Windows Printer via SAMBA“,”Continue\u0026rdquo;.\nStep 2\nEnter connection: smb://_USER:_PASSWORD@print.hosting.ru.nl/FollowMe, “Continue” We could enter the actual _USER and _PASSWORD, but is more secure to keep the strings “_USER” and “_PASSWORD”, and set them later (see below).\nStep 3\nProvide a PPD File: [Browse], upload the ppd file FollowMe.ppd, and click “Add Printer”. After this, “lpq -P FollowMe” should show “FollowMe is ready”.\nStep 4\nCUPS will store the information from step 3 into /etc/cups/printers.conf There should be details of the printer, and also these lines: AuthInfoRequired username,password DeviceURI smb://_USER:_PASSWORD@print.hosting.ru.nl/FollowMe The actual _USER and _PASSWORD can be set, and the AuthInfoRequired can be set: AuthInfoRequired none After restarting cups (“service cups restart”) printing should work. To make this the default add “export PRINTER=FollowMe” to ~/.bashrc and print with lpr, or using, e.g., okular or evince. The default setting is to print in grayscale. If you want to print in color, change the settings. With lpr, use -o SelectColor=Color. To set this option permanently use: \u0026quot;/usr/bin/lpoptions -o SelectColor=Color\u0026quot;. This will store the setting in /etc/cups/lpoptions.\nStep 5\nAfter a reboot, AuthInfoRequired in /etc/cups/printers.conf may be reset to “username,password”. Also, you may not like a password in plain ASCII. This can be fixed by changing the backend: the “smb” in printer.conf refers to /usr/lib/cups/backend/smb, which usually is a link to /usr/bin/smbspool. Change /usr/lib/cups/backend/smb into a bash script: #!/bin/bash export AuthInfoRequired none export DEVICE_URI=“smb://_USER:_PASSWORD@print.hosting.ru.nl/FollowMe” /usr/bin/smbspool “$@” You can now use the actual RU-username and password, or create a script that has a more secure way of obtaining the password\nPrinting a job at the MFP Step 1\nLog in with your RU-account, without the ru\\ prefix, eg. u123456 and RU-password or your 6 digit Péage PIN on one of the Konica Minolta MFP’s. All MFPs have a card reader, you can also just swipe the coupled card (campus card or other). There is a manual how to couple a card. Step 2\nChoose Print, select the print job(s). Pressing Details next to the print job will show you the costs of this print job. Step 3\nPress the blue button to print your document(s). Step 4\nLog out Generate PIN for Péage Step 1\nVisit the site https://peage.ru.nl/. This site is worldwide available. Step 2\nSelect Peage Portal. Step 3\nYour are now forwarded to https://safeq.ru.nl/.\nLog in with your RU-account, without the ru\\ prefix, eg. u123456 and RU-password. Step 4\nClick the link “Generate PIN” which will generate a 6 digit pincode for you. Step 5\nLog out. Report, status and history budget Péage Step 1\nVisit the site https://peage.ru.nl/. This site is worldwide available. Step 2\nSelect Peage Portal. Step 3\nYour are now forwarded to https://safeq.ru.nl/.\nLog in with your RU-account, without the ru\\ prefix, eg. u123456 and RU-password. Step 4\nIn the top of the page click the tab “Reports” which will show you the reports page. Step 5\nLog out. ","permalink":"https://cncz.science.ru.nl/howto/printing-workarounds/","summary":"\u003cdiv\u003e\u003csvg width=\"0\" height=\"0\" display=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003csymbol id=\"tip-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.967-111.033 248-248 248S8 392.967 8 256 119.033 8 256 8s248 111.033 248 248zM227.314 387.314l184-184c6.248-6.248 6.248-16.379 0-22.627l-22.627-22.627c-6.248-6.249-16.379-6.249-22.628 0L216 308.118l-70.059-70.059c-6.248-6.248-16.379-6.248-22.628 0l-22.627 22.627c-6.248 6.248-6.248 16.379 0 22.627l104 104c6.249 6.249 16.379 6.249 22.628.001z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"note-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"warning-notice\" viewBox=\"0 0 576 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"info-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 110c23.196 0 42 18.804 42 42s-18.804 42-42 42-42-18.804-42-42 18.804-42 42-42zm56 254c0 6.627-5.373 12-12 12h-88c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h12v-64h-12c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h64c6.627 0 12 5.373 12 12v100h12c6.627 0 12 5.373 12 12v24z\"/\u003e\u003c/symbol\u003e\u003c/svg\u003e\u003c/div\u003e\u003cdiv class=\"notice info\" \u003e\n\u003cp class=\"first notice-title\"\u003e\u003cspan class=\"icon-notice baseline\"\u003e\u003csvg\u003e\u003cuse href=\"#info-notice\"\u003e\u003c/use\u003e\u003c/svg\u003e\u003c/span\u003eInfo\u003c/p\u003e","title":"Printing workarounds"},{"content":"As a test of the new version of Ubuntu, 22.04 LTS, we have installed a new login server lilo8.science.ru.nl. In a few months it will replace the four year old login server lilo6. The name lilo, that always points to the newest/fastest login server, will then be moved from the two year old lilo7 to the new lilo8. The new lilo8 is a Dell PowerEdge R6515 with 1 AMD 7502P 2.5GHz 32-core processor and 64GB RAM. Because we enabled hyper-threading, it is showing 64 processors. For users who want to check the identity of this new server before supplying their Science-password to the new server, see the section about our loginservers. Please report all problems with this new version of Ubuntu Linux.\n","permalink":"https://cncz.science.ru.nl/news/2022-05-24_test-of-ubuntu-2204-on-linux-login-server-lilo8/","summary":"\u003cp\u003eAs a test of the new version of Ubuntu, 22.04 LTS, we have installed a\nnew login server \u003ccode\u003elilo8.science.ru.nl\u003c/code\u003e. In a few months it will replace\nthe four year old login server \u003ccode\u003elilo6\u003c/code\u003e. The name \u003ccode\u003elilo\u003c/code\u003e, that always\npoints to the newest/fastest login server, will then be moved from the\ntwo year old \u003ccode\u003elilo7\u003c/code\u003e to the new \u003ccode\u003elilo8\u003c/code\u003e. The new \u003ccode\u003elilo8\u003c/code\u003e is a Dell\nPowerEdge R6515 with 1 AMD 7502P 2.5GHz 32-core processor and 64GB RAM.\nBecause we enabled hyper-threading, it is showing 64 processors. For\nusers who want to check the identity of this new server before supplying\ntheir Science-password to the new server, see \u003ca href=\"/howto/hardware-servers/\"\u003ethe section about our\nloginservers\u003c/a\u003e. Please \u003ca href=\"/howto/contact/\"\u003ereport all\nproblems\u003c/a\u003e with this new version of Ubuntu Linux.\u003c/p\u003e","title":"Test of Ubuntu 22.04 on Linux login server lilo8"},{"content":"General Account The procedure below only works for employees with an U-number. For access with an E-number account please contact labservant@science.ru.nl\nAll employees and guests who need to access to labservant can obtain an account using the following steps:\nRequest labservant access via the secretariat of your department, they can grand labservant access via RBS. After labservant access is granted in RBS, login to labservant using your RU account (https://labservant.science.ru.nl) During your first logon an account is created based on your personal data in RBS After a successful login (you should see the Labservant home screen), the lab-manager of your department can grant you the authorizations needed. When the message “Logged in but no verified check” is displayed after logon, try to login again using a capital letter in your user name (U-number). If the message persists the most probable cause is that labservant access was not granted in RBS by your department’s secretariat.\nLab-managers Each organisational unit or cluster of units has one or more labservant lab-managers who can grant labservant authorizations to department members and can manage the department’s storage locations and budget numbers. The labmanager is the first in line to contact regarding any labservant questions or issues.\nInstitute/Service Department Lab Manager(s) Donders Centre for Neuroscience DCN Section Neurobiology Debbie Tilburg-Ouwens DCN Section Neurophysics Debbie Tilburg-Ouwens High Field Magnet Laboratory \u0026 FELIX HFML/FELIX FELIX Facility Jonathan MartensBritta Redlich HFML/FELIX High Field Magnet Laboratory Hans Engelkamp Institute for Molecules and Materials IMM Analytical Chemistry \u0026 Chemometrics Joris Meurs IMM Applied Materials Science Peter Mulder IMM Biophysical Chemistry Frank NelissenAmrah Weijn IMM Biomolecular Chemistry Amrah WeijnFrank Nelissen IMM Molecular and Laser Physics Andre van Roij IMM Molecular Chemistry Cluster Samuel BosmaJan Dommerholt IMM NMR Research Centre Ruud Aspers IMM Physical Chemistry of Soft Matter Ruth Croters IMM Scanning Probe Microscopy Henning von Allwörden IMM Solid State Chemistry Erik de Ronde Paul Tinnemans IMM Spectroscopy of Cold Molecules Andre van Roij IMM Utlrafast Spectroscopy of Correlated Materials Chris Berkhout Radboud Institute for Biological and Environmental Sciences RIBES Ecology Niels WagemakerAnnemiek Tiekstra RIBES Environmental Sciences Martien GraumansKatinka van de Pas-Schoonen RIBES Experimental Garden and Genebank ... RIBES Microbiology Katinka van de Pas-SchoonenRob de Graaf RIBES Plant \u0026 Animal Biology Jan ZethofDaan van den Brink RIBES RIBES Radio Lab Jan Zethof Educational Institutes OBW Education Labs Biosciences Lydia Ketelaars Guus Middelbeek OMW Education Labs Molecular Sciences Tom Bloemberg Luuk van Summeren ONS Education Labs Physics Luuk van Summeren Radboud Institute for Molcular Life Sciences RIMLS Molecular Biology Anita Kaan RIMLS Molecular Developmental Biology Siebe van Genesen RIMLS Proteomics and Chromatin Biology Pascal Jansen Supporting Services GI General Instrumentation Sebastian Krosse Housing \u0026 Logistics Logistics Centre Ruud PatingsPatrick van de VoorenNicky Boschman TeCe Techno Centre Luuk van Summeren ","permalink":"https://cncz.science.ru.nl/howto/labservant/","summary":"\u003ch1 id=\"general\"\u003eGeneral\u003c/h1\u003e\n\u003ch1 id=\"account\"\u003eAccount\u003c/h1\u003e\n\u003cp\u003e\u003cem\u003eThe procedure below only works for employees with an U-number. For\naccess with an E-number account please contact\nlabservant@science.ru.nl\u003c/em\u003e\u003cbr\u003e\n\u003c/br\u003e\nAll employees and guests who need to access to labservant can obtain an\naccount using the following steps:\u003c/p\u003e\n\u003col\u003e\n\u003cli\u003eRequest labservant access via the secretariat of your department,\nthey can grand labservant access via RBS.\u003c/li\u003e\n\u003cli\u003eAfter labservant access is granted in RBS, login to labservant using\nyour RU account (\u003ca href=\"https://labservant.science.ru.nl\" target=\"_blank\"\u003ehttps://labservant.science.ru.nl\u003c/a\u003e)\u003c/li\u003e\n\u003cli\u003eDuring your first logon an account is created based on your personal\ndata in RBS\u003c/li\u003e\n\u003cli\u003eAfter a successful login (you should see the Labservant home\nscreen), the lab-manager of your department can grant you the\nauthorizations needed.\u003c/li\u003e\n\u003c/ol\u003e\n\u003cp\u003eWhen the message “Logged in but no verified check” is displayed after logon, try to login again using a capital letter in your user name (U-number). If the message persists the most probable cause is that labservant access was not granted in RBS by your department’s secretariat.\u003c/p\u003e","title":"Labservant"},{"content":"To make room for the expansion of IMM departments, C\u0026amp;CZ will move June 22 to the ground floor of the Huygens building. The C\u0026amp;CZ helpdesk will still be directly accessible on the main street with an entrance at HG00.051.\n","permalink":"https://cncz.science.ru.nl/news/2022-05-17_june-22-ccz-will-move-to-hg00051/","summary":"\u003cp\u003eTo make room for the expansion of IMM departments, C\u0026amp;CZ will move June\n22 to the ground floor of the Huygens building. The \u003ca href=\"/howto/contact/\"\u003eC\u0026amp;CZ\nhelpdesk\u003c/a\u003e will still be directly accessible on the\nmain street with an entrance at HG00.051.\u003c/p\u003e","title":"June 22, CCZ will move to HG00.051"},{"content":"RU/ILS network management will switch to new hardware. This will lead to a network interruption of at most 5 minutes.\n","permalink":"https://cncz.science.ru.nl/cpk/1295/","summary":"\u003cp\u003eRU/ILS network management will switch to new hardware. This will lead to\na network interruption of at most 5 minutes.\u003c/p\u003e","title":"Saturday May 14 adjacent buildings (Mercator, Proeftuin, Logistiek) 5 minutes without network"},{"content":"This afternoon three coma nodes lost their network because of an incorrect network configuration. They must have shown intermittent network problems earlier. It took us some time to find out what caused this network problem, but when found, it was easy to fix.\n","permalink":"https://cncz.science.ru.nl/cpk/1294/","summary":"\u003cp\u003eThis afternoon three coma nodes lost their network because of an\nincorrect network configuration. They must have shown intermittent\nnetwork problems earlier. It took us some time to find out what caused\nthis network problem, but when found, it was easy to fix.\u003c/p\u003e","title":"Coma, coma01 and coma46 network problem"},{"content":"During the regular change of DNSSEC keys that secure DNS traffic, an incorrect key was introduced in the external DNS of ru.nl for astro.ru.nl. This made astro.ru.nl disappear from the internet. This error was partly corrected 2022-05-02 at ca. 14:00 hours, but the automatic process used an not accepted encryption. It took ILS until 2022-05-22 to correct that by hand after we eventually noticed the error. Because the DNS answer that astro.ru.nl doesn\u0026rsquo;t exist may be cached for 24 hours, the problem was not completely over until 2022-05-13 13:00. The main problems for users were that mail from an @astro.ru.nl address bounced.\n","permalink":"https://cncz.science.ru.nl/cpk/1293/","summary":"\u003cp\u003eDuring the regular change of\n\u003ca href=\"https://en.wikipedia.org/wiki/Domain_Name_System_Security_Extensions\" target=\"_blank\"\u003eDNSSEC\u003c/a\u003e\nkeys that secure DNS traffic, an incorrect key was introduced in the\nexternal DNS of ru.nl for astro.ru.nl. This made astro.ru.nl disappear\nfrom the internet. This error was partly corrected 2022-05-02 at ca.\n14:00 hours, but the automatic process used an not accepted encryption.\nIt took ILS until 2022-05-22 to correct that by hand after we eventually\nnoticed the error. Because the DNS answer that astro.ru.nl doesn\u0026rsquo;t exist\nmay be cached for 24 hours, the problem was not completely over until\n2022-05-13 13:00. The main problems for users were that mail from an\n@astro.ru.nl address bounced.\u003c/p\u003e","title":"Astro.ru.nl DNS(SEC) service down"},{"content":"The latest version of Maple, Maple2022, for Windows/macOS/Linux can be found on the Install network share and has been installed on C\u0026amp;CZ managed Linux computers. License codes can be requested from C\u0026amp;CZ helpdesk or postmaster.\n","permalink":"https://cncz.science.ru.nl/news/2022-04-21_maple-new-version-maple2022/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/maple/\"\u003eMaple\u003c/a\u003e, Maple2022, for\nWindows/macOS/Linux can be found on the\n\u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e network share and has been installed\non C\u0026amp;CZ managed Linux computers. License codes can be requested from\nC\u0026amp;CZ helpdesk or postmaster.\u003c/p\u003e","title":"Maple new version: Maple2022"},{"content":"Starting December 2022 the ChemOffice+ license is being replaced by a ChemDraw Prime campus license.\nChemDraw Prime is a complete “entry-level” drawing program that provides all the tools you need to quickly create chemically intelligent, publication-ready chemical structures and reactions, laboratory notes and experiment write-ups. As well as a full set of chemical structure essentials such as rings, bonds, chains, atoms and functional groups, ChemDraw Prime includes chemical and lab equipment templates and handy TLC and Gel Electrophoresis Plate drawing tools.\nChemDraw Prime includes the following features:\nAnalyze and check structures Structure clean-up Expand and contract labels Create and use nicknames Tetrahedral and geometric stereochemistry, including absolute and relative Multicenter attachment points for haptic and other pi bonds Chemical polymer tools Calculate properties including pKa, LogP, LogS and tPSA and hotlink to structure Read and write all common chemical and graphics files Read JCamp and Galactic spectra files Fragmentation tools Special “copy/paste as” command for CDX, CDXML, molfile, SMILES, InChI and InChIKey (copy only) In-place OLE editing of ChemDraw objects ChemDraw is actively used in multiple chemical research groups within the Science Faculty and in the curriculum of the molecular sciences programs. Because of the user-friendliness and intuitive use of the software it is highly appropriate for student use.\nEveryone with an e-mail account ending in @science.ru.nl, @ru.nl or @student.ru.nl is eligible to download the software and install it 3 times maximum.\nThe installation files for ChemDraw Prime (Windows and Mac-OS) are available on the Revvity Signals webpage:\nNew users\nNew users first need to register at Revvity Signals via\nhttps://connect.revvitysignals.com/sitesubscription/\nSearch Radboud University Important Choose the upper Register button. Fill out your name, the address of the faculty and your Radboud email-address. And click “Submit” After submitting the data you will receive a verification email on the supplied address. In the email click “Create Account” On the “Sign Up” tab create a new account, use your Radboud email-address (the one you used to register) and a self chosen password, and click “Sign Up”. After a short while you will be re-routed to the “List Entitlements”, which shows are active licenses. Write down or copy the \u0026lsquo;Activation code\u0026rsquo;(you will need it during the install) and click the “Download Now” link in the last column of the ChemDraw Prime entry. Download the installation files for your operating system. Existing users\nExcisting Revvity Signals users can login via https://revvitysignals.flexnetoperations.com/.\nClick \u0026lsquo;List Entitlements\u0026rsquo; in the menu on the left-hand side of the page. Write down or copy the \u0026lsquo;Activation code\u0026rsquo;(you will need it during the install) and click the “Download Now” link in the last column of the ChemDraw Prime entry. Download the installation files for your operating system. After Activation ChemDraw-prime should work until April 5, 2031.\n","permalink":"https://cncz.science.ru.nl/howto/chembiooffice/","summary":"\u003cp\u003eStarting December 2022 the ChemOffice+ license is being replaced by a ChemDraw Prime campus license.\u003c/p\u003e\n\u003cp\u003eChemDraw Prime is a complete “entry-level” drawing program that provides all the tools you need to quickly create chemically intelligent, publication-ready chemical structures and reactions, laboratory notes and experiment write-ups. As well as a full set of chemical structure essentials such as rings, bonds, chains, atoms and functional groups, ChemDraw Prime includes chemical and lab equipment templates and handy TLC and Gel Electrophoresis Plate drawing tools.\u003c/p\u003e","title":"ChemDraw Prime / ChemBioOffice"},{"content":"The latest version of Matlab, R2022a, is available for departments that have licenses. The software and license codes can be obtained through a mail to postmaster for those entitled to it. The software can also be found on the install-disc. All C\u0026amp;CZ-managed Linux machines have this version installed, an older version (/opt/matlab-R2021a/bin/matlab) is still available temporarily. The C\u0026amp;CZ-managed Windows machines will not receive a new version during the semester to prevent problems with version dependencies in current lectures.\n","permalink":"https://cncz.science.ru.nl/news/2022-03-22_matlab-r2022a-available/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/matlab/\"\u003eMatlab\u003c/a\u003e, R2022a, is available\nfor departments that have licenses. The software and license codes can\nbe obtained through a mail to postmaster for those entitled to it. The\nsoftware can also be found on the \u003ca href=\"/tags/software\"\u003einstall\u003c/a\u003e-disc. All\nC\u0026amp;CZ-managed Linux machines have this version installed, an older\nversion (/opt/matlab-R2021a/bin/matlab) is still available temporarily.\nThe C\u0026amp;CZ-managed Windows machines will not receive a new version during\nthe semester to prevent problems with version dependencies in current\nlectures.\u003c/p\u003e","title":"Matlab R2022a available"},{"content":"C\u0026amp;CZ administers the licenses for the use of LabVIEW within FNWI. LabVIEW by NI is a graphical programming environment engineers use to develop automated research, validation, and production test systems.\nFrom version 2022Q3 LabVIEW no longer works standalone and unlimited in terms of time. C\u0026amp;CZ manages a LabVIEW license server with a small number of licenses that have to be renewed every year. Users of this license must be registered on the license server.\n","permalink":"https://cncz.science.ru.nl/howto/labview/","summary":"\u003cp\u003eC\u0026amp;CZ administers the licenses for the use of\n\u003ca href=\"https://en.wikipedia.org/wiki/LabVIEW\" target=\"_blank\"\u003eLabVIEW\u003c/a\u003e within FNWI. LabVIEW by\n\u003ca href=\"https://www.ni.com/\" target=\"_blank\"\u003eNI\u003c/a\u003e is a graphical programming environment\nengineers use to develop automated research, validation, and production\ntest systems.\u003c/p\u003e\n\u003cp\u003eFrom version 2022Q3 LabVIEW no longer works standalone and unlimited\nin terms of time. C\u0026amp;CZ manages a LabVIEW license server with a small number of\nlicenses that have to be renewed every year. Users of this license must\nbe registered on the license server.\u003c/p\u003e","title":"LabVIEW"},{"content":"A new version of Mathematica (13.0.1) has been installed on all C\u0026amp;CZ managed Linux systems, older versions can still be found in /vol/mathematica. The installation files for Windows, Linux and macOS can be found on the Install-disk, also for older versions of Mathematica. Installation and license info can be requested from C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2022-03-02_new-version-of-mathematica-1301/","summary":"\u003cp\u003eA new version of \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e (13.0.1) has been\ninstalled on all C\u0026amp;CZ managed Linux systems, older versions can still be\nfound in \u003ccode\u003e/vol/mathematica\u003c/code\u003e. The installation files for Windows, Linux\nand macOS can be found on the \u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e-disk,\nalso for older versions of Mathematica. Installation and license info\ncan be \u003ca href=\"/howto/contact/\"\u003erequested from C\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e","title":"New version of Mathematica (13.0.1)"},{"content":"FNWI asks lecturers and students to fill in a survey about the computer labs. The reason is that the Faculty of Science plans to remodel its teaching rooms in a multifunctional way, with computer labs that use ‘Bring Your Own Device’ (BYOD). This means that the existing computer labs (terminal rooms, TK’s) in the Huygens building will be phased out in the coming years. In order to plan the further implementation, we would like to request your input on the current use of the computer labs by means of a survey in order to determine the pace and which alternatives may be needed to replace the various current uses of the current computer labs. The project group will advise the Faculty Board based on this survey and the data from the actual use of the rooms and equipment (laptops and PC’s).\n","permalink":"https://cncz.science.ru.nl/news/2022-02-23_survey-computer-labs-and-byod/","summary":"\u003cp\u003eFNWI asks lecturers and students to fill in a \u003ca href=\"https://u1.survey.science.ru.nl/index.php/735564?lang=en\" target=\"_blank\"\u003esurvey about the computer\nlabs\u003c/a\u003e. The\nreason is that the Faculty of Science plans to remodel its teaching\nrooms in a multifunctional way, with computer labs that use \u003ca href=\"https://en.wikipedia.org/wiki/Bring_your_own_device\" target=\"_blank\"\u003e‘Bring Your\nOwn Device’\n(BYOD)\u003c/a\u003e. This means\nthat the existing computer labs (terminal rooms, TK’s) in the Huygens\nbuilding will be phased out in the coming years. In order to plan the\nfurther implementation, we would like to \u003ca href=\"https://u1.survey.science.ru.nl/index.php/735564?lang=en\" target=\"_blank\"\u003erequest your input on the\ncurrent use of the computer labs by means of a\nsurvey\u003c/a\u003e in\norder to determine the pace and which alternatives may be needed to\nreplace the various current uses of the current computer labs. The\nproject group will advise the Faculty Board based on this survey and the\ndata from the actual use of the rooms and equipment (laptops and PC’s).\u003c/p\u003e","title":"Survey computer labs and BYOD"},{"content":"The network switch of the Coma cluster seems to be broken, all attached nodes are separated from the rest of the network. We\u0026rsquo;ll replace the switch a.s.a.p. and (let) analyze the problem after that.\n","permalink":"https://cncz.science.ru.nl/cpk/1291/","summary":"\u003cp\u003eThe network switch of the Coma cluster seems to be broken, all attached\nnodes are separated from the rest of the network. We\u0026rsquo;ll replace the\nswitch a.s.a.p. and (let) analyze the problem after that.\u003c/p\u003e","title":"Network switch of Astro Coma cluster down"},{"content":"February 14, ILS switched off antique versions of TLS (1.0 and 1.1) for the Eduroam authentication on ILS LDAP servers. From then on, SUSE Linux 15.3 clients can\u0026rsquo;t authenticate with U- or s-number. They only have TLS1.2 and the ILS servers offer TLS1.3 first, after that an error occurs. By using the Science-account to authenticate, these users succeed in connecting to Eduroam.\n","permalink":"https://cncz.science.ru.nl/cpk/1292/","summary":"\u003cp\u003eFebruary 14, ILS switched off antique versions of\n\u003ca href=\"https://en.wikipedia.org/wiki/Transport_Layer_Security\" target=\"_blank\"\u003eTLS\u003c/a\u003e (1.0 and\n1.1) for the \u003ca href=\"https://www.eduroam.nl/en/\" target=\"_blank\"\u003eEduroam\u003c/a\u003e authentication on\n\u003ca href=\"https://www.ru.nl/ict-uk/\" target=\"_blank\"\u003eILS\u003c/a\u003e LDAP servers. From then on, SUSE Linux\n15.3 clients can\u0026rsquo;t authenticate with U- or s-number. They only have\nTLS1.2 and the ILS servers offer TLS1.3 first, after that an error\noccurs. By using the Science-account to authenticate, these users\nsucceed in connecting to Eduroam.\u003c/p\u003e","title":"SUSE Linux 15.3 Eduroam doesn't work with U- or s-number, but does with Science account"},{"content":"A new version of Mathematica (13.0.0) has been installed on all C\u0026amp;CZ managed Linux systems, older versions can still be found in /vol/mathematica. The installation files for Windows, Linux and macOS can be found on the Install-disk, also for older versions of Mathematica. Installation and license info can be requested from C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2021-12-21_new-version-of-mathematica-1300/","summary":"\u003cp\u003eA new version of \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e (13.0.0) has been\ninstalled on all C\u0026amp;CZ managed Linux systems, older versions can still be\nfound in \u003ccode\u003e/vol/mathematica\u003c/code\u003e. The installation files for Windows, Linux\nand macOS can be found on the \u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e-disk,\nalso for older versions of Mathematica. Installation and license info\ncan be \u003ca href=\"/howto/contact/\"\u003erequested from C\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e","title":"New version of Mathematica (13.0.0)"},{"content":"In the process of handling the Log4Shell vulnerability, it was decided to use the Intrusion Protection of the FortiNet firewall for all RU network traffic. Don’t hesitate to contatc us if you experience drawbacks.\n","permalink":"https://cncz.science.ru.nl/news/2021-12-15_malicious-network-traffic-will-be-blocked/","summary":"\u003cp\u003eIn the process of handling the\n\u003ca href=\"https://en.wikipedia.org/wiki/Log4Shell\" target=\"_blank\"\u003eLog4Shell\u003c/a\u003e vulnerability, it\nwas decided to use the \u003ca href=\"https://en.wikipedia.org/wiki/Intrusion_detection_system\" target=\"_blank\"\u003eIntrusion\nProtection\u003c/a\u003e of\nthe FortiNet firewall for all RU network traffic. Don’t hesitate to\n\u003ca href=\"/howto/contact/\"\u003econtatc\u003c/a\u003e us if you experience drawbacks.\u003c/p\u003e","title":"Malicious network traffic will be blocked"},{"content":"Due to human error, the connection between the new datacenter switches and the central router was interrupted.\n","permalink":"https://cncz.science.ru.nl/cpk/1290/","summary":"\u003cp\u003eDue to human error, the connection between the new datacenter switches\nand the central router was interrupted.\u003c/p\u003e","title":"Interrupted link to new datacenter switches"},{"content":"Just like every year during the Christmas break, in the next weeks a full backup of many servers/filesystems onto tape will be made, that is preserved a long time. This will have the effect that servers will sometimes react slower during this period.\n","permalink":"https://cncz.science.ru.nl/news/2021-12-14_yearly-backup-during-christmas-break/","summary":"\u003cp\u003eJust like every year during the Christmas break, in the next weeks a\n\u003ca href=\"/howto/backup#monthly-and-yearly-backup-to-tape\"\u003efull backup of many servers/filesystems onto\ntape\u003c/a\u003e\nwill be made, that is preserved a long time. This will have the effect\nthat servers will sometimes react slower during this period.\u003c/p\u003e","title":"Yearly backup during Christmas break"},{"content":"Prerequisities Science (CNCZ) account. Being member of the qm, qmorgchem or qmteaching and gaussian groups (ask Jan for access). Vpn (when working from home). SSH client (linux usually has OpenSSH, windows - for instance MobaXterm or Putty). X11 client (linux usually has OpenSSH, windows - for instance MobaXterm (optional) WinSCP Video guides GUIDE how to setup environment for Gaussian calculations in windows.\nSetting-up the environment (to be done once) To submit calculations easily you need to set-up the environment first.\nAutomated script You must be within university network or connected through VPN. connect through SSH to lilo.science.ru.nl (in putty that is the hostname). Your username is your science login. After logging-in, execute /vol/qmorgchem/scripts/gaussify script (cnorris is the username in this example):\ncnorris@lilo7:~$ /vol/qmorgchem/scripts/gaussify\nIf you’re more experienced user, you can setup the things on your own.\nExplanation of the automated script The bash script sets-up few things on your behalf. What it does is:\n~/.profile file editation to see your ~/.profile content, execute:\ncnorris@lilo7:~$ cat ~/.profile\nyou should see something like this:\nexport PATH=$PATH:/vol/qmorgchem/scripts\nmodule load Gaussian-16\numask 027\nThis file stores some of your server settings, the script:\nAdds (export PATH=… line) /vol/qmorgchem/scripts in your $PATH variable - by doing this you can easily execute scripts located in /vol/qmorgchem/scripts folder such as the important G16 script. Automatically loads Gaussian-16 module (module load… line) which enables you to use commands like cubegen and similar. Changes the umask to 027 - that means that files newly created from the console can be readed by people from qmorgchem, but cannot be changed by them. If you want to keep the files changeable by other people from qmorgchem, then remove this line from your ~/.profile file. Folders and shortcuts creation Script creates your folder in qmorgchem disk. If you are member of the qmorgchem group it creates your folder also on the qmorgchem-old disk. It creates shortcuts (named symlinks in linux) to those folders within your $HOME directory by ln -s commands.\nTo see those folder changes, execute:\ncnorris@lilo7:/vol$ ls -lh ~\nYou should then see something like this:\ntotal 24K drwxr-s--- 2 cnorris cnorris 4.0K Apr 1 13:37 '$RECYCLE.BIN'\n-rw-r----- 1 cnorris cnorris 402 Apr 1 13:37 desktop.ini\nlrwxrwxrwx 1 cnorris cnorris 28 Apr 1 13:37 old -\u0026gt; /vol/qmorgchem-old/cnorris/\nlrwxrwxrwx 1 cnorris cnorris 15 Apr 1 13:37 others -\u0026gt; /vol/qmorgchem/\nlrwxrwxrwx 1 cnorris cnorris 24 Apr 1 13:37 running -\u0026gt; /vol/qmorgchem/cnorris/\nls is a command which lists directory content, ~ is a shorthand for your $HOME directory (/home/cnorris in case of cnorris user), -lh are arguments: l stands for “long” and h stands for “human-readable.” You clearly see that shortcut named “old” points to your folder at qmorgchem-old disk and “running” points to your folder at qmorgchem disk. Please use qmorgchem-old for inactive projects and do not store .chk files there.\nChecking calculations, submitting jobs, checking queues Queues Each computational job must be submitted to a queue. Currently we have two queues - orgfast and orglong.\norgfast - Queue should be used for standard jobs (e.g., coptimization of geometries, harmonic frequency calculations, excited state spectra calculations). Please use max 4 cpus and maxi 12 GB of ram in this queue. orglong - Queue for more demanding jobs (typically days or weeks of computational time). This queue has a lower priority; jobs will be running only if the given number of processors is free and not requested in the orgfast queue. Please use max 12 cpus and max 32 GB of ram in this queue. Submitting jobs, checking queues There are currently two queues available on the cluster: orgfast for small and quick jobs and orglong for bigger and more-demanding jobs. We are currently using Slurm as our job queuing manager.\nTo submit a job and doing anything with the running jobs you MUST be on cnlogin22\nBasic Commands:\nG16 $job_filename $queue - for instance G16 co2capcture.gjf orgfast - submits a calculation squeue - checks queue scancel $jobid - cancels a job scontrol show jobid $jobid - show details of a job with job number $jobid (good for getting a full name) Once calculation is running a .log file will appear in the folder where is the input file.\nPutty Connect to cnlogin22.science.ru.nl - details are the same as for the abovementioned for lilo.science.ru.nl. Change directory to your active directory where computations are being made (cd running - this brings you through shortcut to your folder on the qmorgchem disk).\nTo submit a job, type:\ncnorris@cnlogin22:~$ G16 $job_filename $queue\ncommand where $job_filename is filename of your Gaussian input and $queue is either orgfast or orglong.\nWinSCP connect through SFTP to cnlogin22.science.ru.nl and then open folder running and then type:\ncnorris@cnlogin22:~$ G16 $job_filename $queue\ncommand where $job_filename is filename of your Gaussian input and $queue is either orgfast or orglong.\nFor clarity, see the pictures below:\nWinscp1.png|opening console Winscp2.png|logging in Winscp3.png|submitting\nChecking calculations once calculations are finished or you want to take a look, you can either use molden (its installed on the cluster - you can run it when you have mobaxterm on and you are connected on lilo) or you can connect to the disks and check the files from your windows molecule viewer.\nConnecting to disks - windows Open file explorer and into navigation bar type:\n\\\\qmorgchem-srv.science.ru.nl\\qmorgchem\\\nfor qmorgchem-old, the link is:\n\\\\qmorgchem-old-srv.science.ru.nl\\qmorgchem-old\\\nConnecting to disks - Linux create some file in your homedir - for example lilofs:\nmkdir ~/lilofs\ninstall sshfs if you do not have it yet and then:\nsshfs lilo.science.ru.nl:/ ~/lilofs\nthe disks are then located in ~/lilofs/vol , I will leave creating appropriate symlinks as a homework excercise - its analogous to commands mentioned above.\nStandard operation procedure, tips If the orglong queue is full and you have quick jobs, run them at orgfast Pay attention when setting-up memory allocation, use of excessive memory prevents other jobs from running. Memory is shared. Do not use memory that you do not need. Do calculations in optimization steps reading force constants (RCFC) speeds-up the initial optimization step. optimization steps This section is an example of the optimization steps. Basis sets and levels of theory are case-specific and thus may vary.\nsemiempirical (if applicable, AM1, PM6) cheap DFT (pure DFT, fe: B97D/sto-3g, M06L/midix) expensive DFT (hybrid, fe: B3Lyp) Issues Open Failing calculations after submission error note: galloc: could not allocate memory. For now there is an issue that sometimes calculation fail while submitting a job. If this happens to you, please record a job number and send it to Jan. Do not delete .error, .out and .log files of the failed job, they are important for debugging this issue.\nDisclaimer If you have any issue to report please write Jan.\nThis guide is a draft, if you have any suggestions how to improve the readability, understandability or any idea how to make it better, please do not be shy and write Jan.\n","permalink":"https://cncz.science.ru.nl/howto/gaussian/","summary":"\u003ch2 id=\"prerequisities\"\u003ePrerequisities\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eScience (CNCZ) account.\u003c/li\u003e\n\u003cli\u003eBeing member of the qm, qmorgchem or qmteaching and gaussian groups\n(ask Jan for access).\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/howto/vpn/\"\u003eVpn\u003c/a\u003e (when working from home).\u003c/li\u003e\n\u003cli\u003eSSH client (linux usually has \u003ca href=\"https://www.openssh.com/\" target=\"_blank\"\u003eOpenSSH\u003c/a\u003e,\nwindows - for instance \u003ca href=\"https://mobaxterm.mobatek.net/\" target=\"_blank\"\u003eMobaXterm\u003c/a\u003e\nor \u003ca href=\"https://www.putty.org/\" target=\"_blank\"\u003ePutty\u003c/a\u003e).\u003c/li\u003e\n\u003cli\u003eX11 client (linux usually has \u003ca href=\"https://www.openssh.com/\" target=\"_blank\"\u003eOpenSSH\u003c/a\u003e,\nwindows - for instance \u003ca href=\"https://mobaxterm.mobatek.net/\" target=\"_blank\"\u003eMobaXterm\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e(optional) \u003ca href=\"https://winscp.net/eng/download.php\" target=\"_blank\"\u003eWinSCP\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch2 id=\"video-guides\"\u003eVideo guides\u003c/h2\u003e\n\u003cp\u003e\u003ca href=\"https://youtu.be/krr8xk7LCCA\" target=\"_blank\"\u003eGUIDE\u003c/a\u003e how to setup environment for\nGaussian calculations in windows.\u003c/p\u003e\n\u003ch2 id=\"setting-up-the-environment-to-be-done-once\"\u003eSetting-up the environment (to be done once)\u003c/h2\u003e\n\u003cp\u003eTo submit calculations easily you need to set-up the environment first.\u003c/p\u003e","title":"Gaussian"},{"content":"C\u0026amp;CZ recently installed a GitLab Pages server. With GitLab Pages, you can publish static websites directly from a repository in GitLab. To publish a website with Pages, you can use any static site generator, like Hugo, Harp, Mkdocs, or Hexo. You can also publish any website written directly in plain HTML, CSS, and JavaScript. More info and documentation in the GitLab Pages documentation\n","permalink":"https://cncz.science.ru.nl/news/2021-12-07_gitlab-pages-installed/","summary":"\u003cp\u003eC\u0026amp;CZ recently installed a GitLab Pages server. With GitLab Pages, you\ncan publish static websites directly from a repository in\n\u003ca href=\"/howto/gitlab/\"\u003eGitLab\u003c/a\u003e. To publish a website with Pages, you can use\nany static site generator, like Hugo, Harp, Mkdocs, or Hexo. You can\nalso publish any website written directly in plain HTML, CSS, and\nJavaScript. More info and documentation in the \u003ca href=\"https://gitlab.science.ru.nl/help/user/project/pages/index.md\" target=\"_blank\"\u003eGitLab Pages\ndocumentation\u003c/a\u003e\u003c/p\u003e","title":"GitLab Pages installed"},{"content":"Mathematica is a mathematical software package made by Wolfram Research.\nC\u0026amp;CZ manages the network license for the concurrent use of Mathematica within Radboud University.\nThe license for a small number, ca. 20, of concurrent users of Mathematica, is paid for by C\u0026amp;CZ and may be used freely by students and staff of the Faculty of Science. Until the end of 2023, there temporarily was an unlimited license for all RU staff and students. Users/departments from other parts of the campus can use Mathematica for a yearly reimbursement of the license costs.\nOne can get the installation and license information from C\u0026amp;CZ system administration.\nThe use of Mathematica is logged by the license server.\nOn the Linux PCs that are managed by C\u0026amp;CZ, Mathematica can be found in /vol/mathematica. On MS-Windows PC’s Mathematica can be found on the S-disk (software).\n","permalink":"https://cncz.science.ru.nl/howto/mathematica/","summary":"\u003cp\u003e\u003ca href=\"http://www.wolfram.com/products/mathematica/\" target=\"_blank\"\u003eMathematica\u003c/a\u003e is a mathematical software package made\nby \u003ca href=\"http://www.wolfram.com/\" target=\"_blank\"\u003eWolfram Research\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eC\u0026amp;CZ manages the network license for the concurrent use\nof Mathematica within Radboud University.\u003c/p\u003e\n\u003cp\u003eThe license for a small number, ca. 20, of concurrent users of Mathematica, is paid for by C\u0026amp;CZ and may be used freely by students and staff\nof the Faculty of Science. Until the end of 2023, there temporarily was an unlimited license for all RU staff and students.\nUsers/departments from other parts of the campus can use Mathematica for a yearly reimbursement of the license costs.\u003c/p\u003e","title":"Mathematica"},{"content":"Maple by Waterloo Maple’s Maplesoft is an interactive computer-algebra system, for which C\u0026amp;CZ has acquired a license.\nThe license of Maple is a 4-user concurrent license in 2023 and a 2-user in 2024.\n","permalink":"https://cncz.science.ru.nl/howto/maple/","summary":"\u003cp\u003e\u003ca href=\"http://www.maplesoft.com/products/Maple/\" target=\"_blank\"\u003eMaple\u003c/a\u003e by Waterloo\nMaple’s \u003ca href=\"http://www.maplesoft.com/\" target=\"_blank\"\u003eMaplesoft\u003c/a\u003e is an interactive\ncomputer-algebra system, for which C\u0026amp;CZ has acquired a license.\u003c/p\u003e\n\u003cp\u003eThe license of Maple is a 4-user concurrent license in 2023 and a 2-user in 2024.\u003c/p\u003e","title":"Maple"},{"content":"The C\u0026amp;CZ administered “4 concurrent user” license for Maple has been continued until December 31, 2022. The latest version of Maple, Maple2021.2, for Windows/macOS/Linux can be found on the Install network share and has been installed on C\u0026amp;CZ managed Linux computers. License codes can be requested from C\u0026amp;CZ helpdesk or postmaster.\n","permalink":"https://cncz.science.ru.nl/news/2021-12-06_maple-new-version-maple20212-and-license-continued/","summary":"\u003cp\u003eThe C\u0026amp;CZ administered “4 concurrent user” license for Maple has been\ncontinued until December 31, 2022. The latest version of\n\u003ca href=\"/howto/maple/\"\u003eMaple\u003c/a\u003e, Maple2021.2, for Windows/macOS/Linux can be\nfound on the \u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e network share and has\nbeen installed on C\u0026amp;CZ managed Linux computers. License codes can be\nrequested from C\u0026amp;CZ helpdesk or postmaster.\u003c/p\u003e","title":"Maple new version: Maple2021.2 and license continued"},{"content":"About GitLab \u0026ldquo;GitLab is an incredibly powerful open source code collaboration platform, git repository manager, issue tracker and code reviewer.\u0026rdquo; Quoted from the GitLab website\nLogging in Info\nthe url for gitlab is: http://gitlab.science.ru.nl\nScience login Although anyone with a Science Login can login to GitLab, only people that have actually logged in to GitLab will be visible for other GitLab users. Keep that in mind when adding people to projects or groups.\nNB, when science accounts are removed, their projects in gitlab will also disappear, so if work needs to continue after people leave the faculty, they should transfer ownership/maintainership to someone else with a valid gitlab account.\nExternal users If you wish to add external users to your GitLab project, please request a Science login with access rights limited to GitLab.\nA GitLab-only Science login is registered as a so called external user in GitLab. As an external user, you can\u0026rsquo;t create projects, but you can be assigned to an existing project. Consult GitLabs documentation about external users for more information.\nGit and managing large files As of July 18th 2016, LFS (Large File Storage) support is enabled on the GitLab server. Git LFS allows you to manage version control on large files without storing them in the git repository. Please refer to the Git LFS project website for more information.\nDocumentation Git documentation General GitLab documentation Changes 2023-03-07 Science logins for external GitLab users. 2022-10-17 enabled the feature-flags for the Debian API. 2021-12-03 Enabled GitLab pages. 2021-10-21 enabled the Docker Container Registry service. See the gitlab documentation for more info. 2020-06-26 gitlab.pep.cs.ru.nl moved to a new Ubuntu 20.04 server. These are the ssh fingerprints for gitlab.pep.cs.ru.nl: 256 SHA256:bVYa+loFqV0Hdv3sPukp40zf1LdQd4PNBOSJa6oRnyE root@gitlab9 (ECDSA) 256 SHA256:j4pDiX2SSKGHjoZ1OQXgrKpIvLxrCnckZCtYWapHFcM root@gitlab9 (ED25519) 3072 SHA256:QIdVcGdaEhyYXcUVtc2FIa1R9F/1KUekR+7IV23c0LI root@gitlab9 (RSA) 2019-01-25 GitLab updated to version 11.7.0 and moved to a new Ubuntu 18.04 server. You might encounter an SSH prompt when pushing or pulling code. The current ssh fingerprints for gitlab.science.ru.nl are: SHA256:7G/4WD/tUE8H0k9MkBznlcx+ZWgUxnn3KazKm1XQwRk root@gitlab (ED25519) SHA256:NgZ9HciXlwG5JNPSFbem7bBbDbhqaNAO7JHag8rwi/I root@gitlab (RSA) SHA256:BSSXi19WgCSpZu5AQkUTtwm+5zAMioQJpFE3oxBrIMQ root@gitlab (ECDSA) 2016-09-13 Configured reply by email. You can now simply reply by email to GitLab mail notifications. 2016-07-18 Setup GitLab LFS (Large File Storage). Maintenance window Updates to GitLab are usually done on Friday mornings. During the upgrade, GitLab may be unavailable for a while.\n","permalink":"https://cncz.science.ru.nl/howto/gitlab/","summary":"\u003ch2 id=\"about-gitlab\"\u003eAbout GitLab\u003c/h2\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u0026ldquo;GitLab is an incredibly powerful open source code collaboration\nplatform, git repository manager, issue tracker and code reviewer.\u0026rdquo;\nQuoted from the \u003ca href=\"https://about.gitlab.com/features/\" target=\"_blank\"\u003eGitLab website\u003c/a\u003e\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003ch2 id=\"logging-in\"\u003eLogging in\u003c/h2\u003e\n\u003cdiv\u003e\u003csvg width=\"0\" height=\"0\" display=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003csymbol id=\"tip-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.967-111.033 248-248 248S8 392.967 8 256 119.033 8 256 8s248 111.033 248 248zM227.314 387.314l184-184c6.248-6.248 6.248-16.379 0-22.627l-22.627-22.627c-6.248-6.249-16.379-6.249-22.628 0L216 308.118l-70.059-70.059c-6.248-6.248-16.379-6.248-22.628 0l-22.627 22.627c-6.248 6.248-6.248 16.379 0 22.627l104 104c6.249 6.249 16.379 6.249 22.628.001z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"note-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"warning-notice\" viewBox=\"0 0 576 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"info-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 110c23.196 0 42 18.804 42 42s-18.804 42-42 42-42-18.804-42-42 18.804-42 42-42zm56 254c0 6.627-5.373 12-12 12h-88c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h12v-64h-12c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h64c6.627 0 12 5.373 12 12v100h12c6.627 0 12 5.373 12 12v24z\"/\u003e\u003c/symbol\u003e\u003c/svg\u003e\u003c/div\u003e\u003cdiv class=\"notice info\" \u003e\n\u003cp class=\"first notice-title\"\u003e\u003cspan class=\"icon-notice baseline\"\u003e\u003csvg\u003e\u003cuse href=\"#info-notice\"\u003e\u003c/use\u003e\u003c/svg\u003e\u003c/span\u003eInfo\u003c/p\u003e","title":"GitLab"},{"content":"Vmhost07 was accidentally shut down. Cause: human error.\nlabservanttest neurotech2 printvm msql01 indicoimapp ldap2 eftw jupytervm\n","permalink":"https://cncz.science.ru.nl/cpk/1289/","summary":"\u003cp\u003eVmhost07 was accidentally shut down. Cause: human error.\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003elabservanttest\u003c/code\u003e\n\u003ccode\u003eneurotech2\u003c/code\u003e\n\u003ccode\u003eprintvm\u003c/code\u003e\n\u003ccode\u003emsql01\u003c/code\u003e\n\u003ccode\u003eindicoimapp\u003c/code\u003e\n\u003ccode\u003eldap2\u003c/code\u003e\n\u003ccode\u003eeftw\u003c/code\u003e\n\u003ccode\u003ejupytervm\u003c/code\u003e\u003c/p\u003e","title":"vmhost07 poweroff"},{"content":"In the C\u0026amp;CZ operated GitLab service, GitLab Docker Container Registry service has been enabled. For more information, please have a look at the GitLab documentation.\n","permalink":"https://cncz.science.ru.nl/news/2021-11-23_gitlab-docker-container-registry-service-enabled/","summary":"\u003cp\u003eIn the C\u0026amp;CZ operated \u003ca href=\"/howto/gitlab/\"\u003eGitLab\u003c/a\u003e service, GitLab Docker\nContainer Registry service has been enabled. For more information,\nplease have a look at the \u003ca href=\"https://gitlab.science.ru.nl/help/user/packages/container_registry/index.md\" target=\"_blank\"\u003eGitLab\ndocumentation\u003c/a\u003e.\u003c/p\u003e","title":"GitLab Docker Container Registry service enabled"},{"content":"Since the end of 2019, C\u0026amp;CZ offers Ceph as a choice for data storage, next to the traditional RAID storage on individual fileservers. Because demand for Ceph storage is rising, the Ceph storage has been upgraded from 1.8 PiB to 2.8 PiB gross. With this upgrade, storage servers have been placed in a central RU datacenter, so the Ceph storage is now distributed over three datacenters. If you want to try whether Ceph suits you, please contact C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2021-11-23_ceph-data-storage-expanded/","summary":"\u003cp\u003eSince the end of 2019, C\u0026amp;CZ offers\n\u003ca href=\"https://wiki.cncz.science.ru.nl/index.php?title=Diskruimte\u0026amp;setlang=en#Ceph_Storage\" target=\"_blank\"\u003eCeph\u003c/a\u003e\nas a choice for data storage, next to the traditional RAID storage on\nindividual fileservers. Because demand for Ceph storage is rising, the\nCeph storage has been upgraded from 1.8 PiB to 2.8 PiB gross. With this\nupgrade, storage servers have been placed in a central RU datacenter, so\nthe Ceph storage is now distributed over three datacenters. If you want\nto try whether Ceph suits you, please \u003ca href=\"/howto/contact/\"\u003econtact C\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e","title":"Ceph data storage expanded"},{"content":"As a result of the expansion of the Ceph storage cluster, the cluster had performance and availability issues. The problems were resolved this morning.\n","permalink":"https://cncz.science.ru.nl/cpk/1288/","summary":"\u003cp\u003eAs a result of the expansion of the Ceph storage cluster, the cluster\nhad performance and availability issues. The problems were resolved this\nmorning.\u003c/p\u003e","title":"Ceph storage expansion caused performance issues"},{"content":"Because BitTorrent is considered to be a security risk (malware/reputation damage) and the traffic primarily consists of illegal downloads, the RU Security Operations Center (SOC) proposed to block this type of traffic from the RU network. Should this cause problems for research or education, we would like to hear from you, so we can notify the SOC and perhaps request an exception.\n","permalink":"https://cncz.science.ru.nl/news/2021-11-11_bittorrent-traffic-will-be-blocked/","summary":"\u003cp\u003eBecause \u003ca href=\"https://en.wikipedia.org/wiki/BitTorrent\" target=\"_blank\"\u003eBitTorrent\u003c/a\u003e is\nconsidered to be a security risk (malware/reputation damage) and the\ntraffic primarily consists of illegal downloads, the RU Security\nOperations Center (SOC) proposed to block this type of traffic from the\nRU network. Should this cause problems for research or education, we\nwould like to \u003ca href=\"/howto/contact\"\u003ehear from you\u003c/a\u003e, so we can notify the SOC and perhaps\nrequest an exception.\u003c/p\u003e","title":"BitTorrent traffic will be blocked"},{"content":"For the majority of the services C\u0026amp;CZ uses free software and open source software. Therefore, some time ago the idea emerged that the C\u0026amp;CZ employees would vote each year which projects would receive a donation from C\u0026amp;CZ. This year the Mozilla Foundation was chosen. Many people will know the Mozilla Firefox webbrowser and the mailclient Mozilla Thunderbird and maybe use it hours a day. But the Mozilla Foundation does a lot more to try to ensure the internet remains a public resource that is open and accessible to us all.\n","permalink":"https://cncz.science.ru.nl/news/2021-11-05_donation-to-free-and-open-source-software-mozilla/","summary":"\u003cp\u003eFor the majority of the services C\u0026amp;CZ uses \u003ca href=\"https://en.wikipedia.org/wiki/Free_software\" target=\"_blank\"\u003efree\nsoftware\u003c/a\u003e and \u003ca href=\"https://en.wikipedia.org/wiki/Open-source_software\" target=\"_blank\"\u003eopen source\nsoftware\u003c/a\u003e.\nTherefore, some time ago the idea emerged that the C\u0026amp;CZ employees would\nvote each year which projects would receive a donation from C\u0026amp;CZ. This\nyear the \u003ca href=\"https://foundation.mozilla.org/\" target=\"_blank\"\u003eMozilla Foundation\u003c/a\u003e was\nchosen. Many people will know \u003ca href=\"https://en.wikipedia.org/wiki/Firefox\" target=\"_blank\"\u003ethe Mozilla\nFirefox\u003c/a\u003e webbrowser and the\nmailclient \u003ca href=\"https://en.wikipedia.org/wiki/Mozilla_Thunderbird\" target=\"_blank\"\u003eMozilla\nThunderbird\u003c/a\u003e and\nmaybe use it hours a day. But \u003ca href=\"https://foundation.mozilla.org/en/what-we-do/\" target=\"_blank\"\u003ethe Mozilla Foundation does a lot\nmore\u003c/a\u003e to try to ensure\nthe internet remains a public resource that is open and accessible to us\nall.\u003c/p\u003e","title":"Donation to free and open source software: Mozilla"},{"content":"C\u0026amp;CZ has a workaround that one can try if on a self-managed/BYOD Windows pc one has problems printing due to the RU Peage PrintNightmare issue. This workaround can be found at the C\u0026amp;CZ Peage page.\n","permalink":"https://cncz.science.ru.nl/news/2021-10-29_peage-workaround-for-printnightmare/","summary":"\u003cp\u003eC\u0026amp;CZ has a workaround that one can try if on a self-managed/BYOD Windows\npc one has problems printing due to the \u003ca href=\"https://meldingen.ru.nl/detail.php?id=1167\u0026amp;lang=en\u0026amp;tg=0\u0026amp;f=0%e2%85%88\" target=\"_blank\"\u003eRU Peage PrintNightmare\nissue\u003c/a\u003e.\nThis workaround can be found at the \u003ca href=\"https://wiki.cncz.science.ru.nl/index.php?title=Peage\u0026amp;setlang=en#.5BPrintNightmare_probleem_workaround.5D.5BPrintNightmare_problem_workaround.5D\" target=\"_blank\"\u003eC\u0026amp;CZ Peage\npage\u003c/a\u003e.\u003c/p\u003e","title":"Peage: workaround for PrintNightmare"},{"content":"To make it easier to install NI LabVIEW for departments that participate in the license, the newly arrived “Spring 2021” version has been copied to the Install network share. Install media can also be borrowed. License codes can be obtained from C\u0026amp;CZ helpdesk or postmaster. For macOS/Linux this version is necessary, for MS Windows one can also install LabVIEW from the NI website.\n","permalink":"https://cncz.science.ru.nl/news/2021-10-15_national-instruments-labview-spring-2021-on-install-network-share/","summary":"\u003cp\u003eTo make it easier to install \u003ca href=\"https://www.ni.com/nl-nl/shop/labview.html\" target=\"_blank\"\u003eNI\nLabVIEW\u003c/a\u003e for departments\nthat participate in the license, the newly arrived “Spring 2021” version\nhas been copied to the \u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e network share.\nInstall media can also be borrowed. License codes can be obtained from\nC\u0026amp;CZ helpdesk or postmaster. For \u003ca href=\"https://www.ni.com/nl-nl/innovations/white-papers/15/install-ni-academic-software-for-mac-os-x-and-linux.html\" target=\"_blank\"\u003emacOS/Linux this version is\nnecessary\u003c/a\u003e,\nfor MS Windows one can also \u003ca href=\"https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019Ke3SAE\u0026amp;l=nl-NL\" target=\"_blank\"\u003einstall LabVIEW from the NI\nwebsite\u003c/a\u003e.\u003c/p\u003e","title":"National Instruments LabVIEW Spring 2021 on Install network share"},{"content":"Two modules of an important switch in the main C\u0026amp;CZ server room lost power during the preparation of planned maintenance. This disconnected ca. 75% of the servers in the room from the network. Moving the modules to new PDU\u0026rsquo;s kimited the downtime to ca. 15 minutes.\n","permalink":"https://cncz.science.ru.nl/cpk/1287/","summary":"\u003cp\u003eTwo modules of an important switch in the main C\u0026amp;CZ server room lost\npower during the preparation of planned maintenance. This disconnected\nca. 75% of the servers in the room from the network. Moving the modules\nto new PDU\u0026rsquo;s kimited the downtime to ca. 15 minutes.\u003c/p\u003e","title":"Server room network switch powerless"},{"content":"An error in the management software prevented all license processes from starting correctly at the reboot of the license server. After fixing this error, all licenses were available again.\n","permalink":"https://cncz.science.ru.nl/cpk/1286/","summary":"\u003cp\u003eAn error in the management software prevented all license processes from\nstarting correctly at the reboot of the license server. After fixing\nthis error, all licenses were available again.\u003c/p\u003e","title":"License server problem"},{"content":"As of October 11, 2021, C\u0026amp;CZ will transfer the management of the fixed data connection points (network outlets, switch ports) in the Faculty of Science buildings (Huygens, Mercator, HFML/FELIX, Goudsmit, Proeftuin) to ILS networks. This concerns both activating/deactivating an outlet (patching) and adjusting settings or solving malfunctions. Taking care of the IP addresses (DNS/DHCP) and the shielding/security by means of Access Control Lists will remain with C\u0026amp;CZ. All requests and malfunctions relating to data connection points can therefore be addressed to the Helpdesk of the ISC as of October 11.\n","permalink":"https://cncz.science.ru.nl/news/2021-10-07_fnwi-network-cable-administration-by-isc-networks/","summary":"\u003cp\u003eAs of October 11, 2021, C\u0026amp;CZ will transfer the management of the fixed\ndata connection points (network outlets, switch ports) in the Faculty of\nScience buildings (Huygens, Mercator, HFML/FELIX, Goudsmit, Proeftuin)\nto \u003ca href=\"/howto/contact/#ils-helpdesk\"\u003eILS networks\u003c/a\u003e. This concerns both\nactivating/deactivating an outlet (patching) and adjusting settings or\nsolving malfunctions. Taking care of the IP addresses (DNS/DHCP) and the\nshielding/security by means of Access Control Lists will remain with\n\u003ca href=\"/howto/contact/\"\u003eC\u0026amp;CZ\u003c/a\u003e. All requests and malfunctions relating to\ndata connection points can therefore be addressed to the \u003ca href=\"/howto/contact/#ils-helpdesk\"\u003eHelpdesk of the\nISC\u003c/a\u003e as of October 11.\u003c/p\u003e","title":"FNWI network cable administration by ISC networks"},{"content":"The latest version of Matlab, R2021b, is available for departments that have licenses. The software and license codes can be obtained through a mail to postmaster for those entitled to it. The software can also be found on the install-disc. All C\u0026amp;CZ-managed Linux machines will soon have this version installed, an older version (/opt/matlab-R2021a/bin/matlab) is still available temporarily. The C\u0026amp;CZ-managed Windows machines will not receive a new version during the semester to prevent problems with version dependencies in current lectures.\n","permalink":"https://cncz.science.ru.nl/news/2021-10-03_matlab-r2021b-available/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/matlab/\"\u003eMatlab\u003c/a\u003e, R2021b, is available\nfor departments that have licenses. The software and license codes can\nbe obtained through a mail to postmaster for those entitled to it. The\nsoftware can also be found on the \u003ca href=\"/tags/software\"\u003einstall\u003c/a\u003e-disc. All\nC\u0026amp;CZ-managed Linux machines will soon have this version installed, an\nolder version (/opt/matlab-R2021a/bin/matlab) is still available\ntemporarily. The C\u0026amp;CZ-managed Windows machines will not receive a new\nversion during the semester to prevent problems with version\ndependencies in current lectures.\u003c/p\u003e","title":"Matlab R2021b available"},{"content":"The experimental BigBlueButton videoconferencing website has been moved and updated. The new URL is https://bigbluebutton.science.ru.nl/ , you can create your own login, or use the one you had on https://bigbb.science.ru.nl, which is being redirected to the new site. The status remains “experimental”; without warranty.\n","permalink":"https://cncz.science.ru.nl/news/2021-10-01_bigbluebutton-videoconferencing-updated/","summary":"\u003cp\u003eThe experimental BigBlueButton videoconferencing website has been moved\nand updated. The new URL is \u003ca href=\"https://bigbluebutton.science.ru.nl/\" target=\"_blank\"\u003ehttps://bigbluebutton.science.ru.nl/\u003c/a\u003e , you\ncan create your own login, or use the one you had on\n\u003ca href=\"https://bigbb.science.ru.nl\" target=\"_blank\"\u003ehttps://bigbb.science.ru.nl\u003c/a\u003e, which is being redirected to the new\nsite. The status remains “experimental”; without warranty.\u003c/p\u003e","title":"BigBlueButton videoconferencing updated"},{"content":"As of October 1, the Science AVS will be merged with Radboud AVS. This reorganization is a result of the improvement programme of facility management and real estate, with bundling of similar services on campus. This bundling creates a campus-wide AV service that will be controlled in its entirety by Campus \u0026amp; Facilities. For FNWI users, the existing contact options (email, telephone) and availability of local support will be continued for the time being in accordance with the existing situation. There will be further communication about any changes in the future. The AVD Faculty of Science resorted under C\u0026amp;CZ since January 2018.\n","permalink":"https://cncz.science.ru.nl/news/2021-09-28_avs-science-now-part-of-avs-radboud/","summary":"\u003cp\u003eAs of October 1, the \u003ca href=\"https://www.ru.nl/science/about-the-faculty/organisation/supporting-services/audio-visual-service/\" target=\"_blank\"\u003eScience\nAVS\u003c/a\u003e\nwill be merged with \u003ca href=\"https://www.ru.nl/fb/english/services/media-technology/\" target=\"_blank\"\u003eRadboud\nAVS\u003c/a\u003e. This\nreorganization is a result of the improvement programme of facility\nmanagement and real estate, with bundling of similar services on campus.\nThis bundling creates a campus-wide AV service that will be controlled\nin its entirety by \u003ca href=\"https://www.ru.nl/fb/english/\" target=\"_blank\"\u003eCampus \u0026amp; Facilities\u003c/a\u003e.\nFor FNWI users, the existing contact options (email, telephone) and\navailability of local support will be continued for the time being in\naccordance with the existing situation. There will be further\ncommunication about any changes in the future. The AVD Faculty of\nScience resorted under C\u0026amp;CZ since January 2018.\u003c/p\u003e","title":"AVS Science now part of AVS Radboud"},{"content":"VPN A VPN makes it possible to get secure access to the internet or to the campus network from anywhere. The computer at home (or anywhere on the internet) in the latter case becomes part of the campus network. In this way you can get access to services that are normally only accessible from computers on campus. The most common of such services are connecting to disk shares or to special servers.\nEduVPN The VPN of choice for Radboud employees and students is eduVPN. The eduVPN client software is available for Windows, macOS, Android, iOS and Linux. You need a RU-account to use eduVPN.\nLibrary For the use of the University library one does not need VPN, because the library has a proxy website UB Off-Campus, that can be used from anywhere on the Internet after logging in with your RU account.\n","permalink":"https://cncz.science.ru.nl/howto/vpn/","summary":"\u003ch1 id=\"vpn\"\u003eVPN\u003c/h1\u003e\n\u003cp\u003eA VPN makes it possible to get secure access to the internet or to the campus network from anywhere.\nThe computer at home (or anywhere on the internet) in the latter case becomes part of the\ncampus network. In this way you can get access to services that are\nnormally only accessible from computers on campus. The most common of\nsuch services are \u003ca href=\"/howto/diskruimte/\"\u003econnecting to disk shares\u003c/a\u003e or\nto special servers.\u003c/p\u003e","title":"VPN"},{"content":"Course software that had been tested caused an overload of the fileserver when it was used by 100 students. The performance of the fileserver was impaired for all users of network shares of this server.\n","permalink":"https://cncz.science.ru.nl/cpk/1285/","summary":"\u003cp\u003eCourse software that had been tested caused an overload of the\nfileserver when it was used by 100 students. The performance of the\nfileserver was impaired for all users of network shares of this server.\u003c/p\u003e","title":"Fileserver 'flock' overloaded"},{"content":"ISC network announcement.\nSaturday October 9, between 08:00 and 15:00, major RU network maintenance will be carried out. During the maintenance window there will be interruptions of maximum 15 minutes. For the FNWI buildings, the maintenance will end 15:00 hours, for the other RU buildings, it might continue until 19:00 hours.\n","permalink":"https://cncz.science.ru.nl/news/2021-09-15_major-ru-network-maintenance-october-9-0830-1500/","summary":"\u003cp\u003eISC network \u003ca href=\"https://www.ru.nl/systeem-meldingen/\" target=\"_blank\"\u003eannouncement.\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003eSaturday October 9, between 08:00 and 15:00, major RU network\nmaintenance will be carried out. During the maintenance window there\nwill be interruptions of maximum 15 minutes. For the FNWI buildings, the\nmaintenance will end 15:00 hours, for the other RU buildings, it might\ncontinue until 19:00 hours.\u003c/p\u003e","title":"Major RU network maintenance October 9 08:30-15:00"},{"content":"Since the summer of 2021, the computers in the Faculty of Science Study Area (HG00.201) and the Library of Science (HG00.011) are no longer being managed by C\u0026amp;CZ, but by the ILS. makes all Windows computers in all RU Study Areas and Library locations uniform. General information about the Library of Science (such as opening hours and reservation of a study place), can be found at the Library of Science website. In addition to these Windows-only computers, eight Linux computers, that are managed by C\u0026amp;CZ, are available in the front of the Study Area (HG00.201).\n","permalink":"https://cncz.science.ru.nl/news/2021-08-17_pcs-in-study-area-and-library-of-science/","summary":"\u003cp\u003eSince the summer of 2021, the computers in the Faculty of Science Study\nArea (HG00.201) and the Library of Science (HG00.011) are no longer\nbeing managed by C\u0026amp;CZ, but by the \u003ca href=\"/howto/contact/#ils-helpdesk\"\u003eILS\u003c/a\u003e.\nmakes all Windows computers in all RU Study Areas and Library locations\nuniform. General information about the Library of Science (such as opening hours\nand reservation of a study place), can be found at \u003ca href=\"https://www.ru.nl/library/library/library-locations/library-science/\" target=\"_blank\"\u003ethe Library of Science website\u003c/a\u003e.\nIn addition to these Windows-only computers, eight Linux computers,\nthat are managed by C\u0026amp;CZ, are available in the front of the Study Area\n(HG00.201).\u003c/p\u003e","title":"PCs in Study Area and Library of Science"},{"content":"C\u0026amp;CZ is looking for a new colleague: systems developer/administrator research and education. For more info see the RU job offer page.\n","permalink":"https://cncz.science.ru.nl/news/2021-06-19_job-offer-systems-developeradministrator-research-and-education/","summary":"\u003cp\u003eC\u0026amp;CZ is looking for a new colleague: systems developer/administrator\nresearch and education. For more info see \u003ca href=\"https://www.ru.nl/werken-bij/vacature/details-vacature/?recid=1156671\u0026amp;doel=embed\u0026amp;taal=nl\" target=\"_blank\"\u003ethe RU job offer\npage\u003c/a\u003e.\u003c/p\u003e","title":"Job offer systems developer/administrator research and education"},{"content":"Because FNWI research groups are increasingly purchasing powerful computers/computing clusters with many CPUs and GPUs, C\u0026amp;CZ has expanded the data center to the existing server room of Radboud Services, in the Forum on the other side of Heijendaalseweg. As a result, there will be sufficient physical space, power and cooling for the servers purchased by departments in the coming years.\n","permalink":"https://cncz.science.ru.nl/news/2021-06-18_expansion-of-science-datacenter-to-forum-building/","summary":"\u003cp\u003eBecause FNWI research groups are increasingly purchasing powerful\ncomputers/computing clusters with many CPUs and GPUs, C\u0026amp;CZ has expanded\nthe data center to the existing server room of Radboud Services, in the\nForum on the other side of Heijendaalseweg. As a result, there will be\nsufficient physical space, power and cooling for the servers purchased\nby departments in the coming years.\u003c/p\u003e","title":"Expansion of Science datacenter to Forum building"},{"content":"A new version of Mathematica (12.3.0) has been installed on all C\u0026amp;CZ managed Linux systems, older versions can still be found in /vol/mathematica. The installation files for Windows and Linux can be found on the Install-disk, also for older versions of Mathematica. Departments that take part in the license can request installation and license info from C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2021-05-23_new-version-of-mathematica-1230/","summary":"\u003cp\u003eA new version of \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e (12.3.0) has been\ninstalled on all C\u0026amp;CZ managed Linux systems, older versions can still be\nfound in \u003ccode\u003e/vol/mathematica\u003c/code\u003e. The installation files for Windows and\nLinux can be found on the \u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e-disk, also\nfor older versions of Mathematica. Departments that take part in the\nlicense can request installation and license info from C\u0026amp;CZ.\u003c/p\u003e","title":"New version of Mathematica (12.3.0)"},{"content":"Printing Through the Radboud University printing system, students and employees are able to print, scan, and copy anywhere on campus, regardless of the location or building at which they study or work. When printing, you send your print job to a print queue instead of a specific printer. The next step is to simply retrieve your print job from any printer. Read more\u0026hellip;\nPrinting from own laptop. In case printing does not work on self managed devices, documents can be uploaded to https://peage.ru.nl. Other workarounds are described here.\nBinding, cutting, stapling and booklets In the Library of Science you can buy binders for your reports, etc. Also there is a cutting tool, a 23 hole punch and several staplers. All Konica Minolta printers can staple automatically.\nIn the printer at HG00.002 a punch unit and a saddle-unit that can fold are available. This makes it possible to produce complete booklets. One can punch 2 or 4 holes. At maximum 20 sheets can be saddle-stitched and folded, so one can produce an A4 booklet from A3 sheets or an A5 booklet from A4 sheets.\nAt the C\u0026amp;CZ office you can also find a cutting tool, a 23 hole punch and a big stapler.\nPosters If you\u0026rsquo;re looking to get posters printed, we offer a range of materials to choose from:\nMaterial Description Maximum width A0 costs Photo paper HP Everyday Pigment Ink Satin Photo 91 cm € 30.00 Canvas Canvas prints do not show cracks as easily as paper prints, can even be carefully folded and included in the hand luggage. 91 cm € 40.00 Info\nTo ensure a smooth process, please deliver your print job in PDF format via email to helpdesk@science.ru.nl. Please let us know your preferred material and budget code (budgetnumber/verbijzondering) when submitting your print job.\n3D printing C\u0026amp;CZ operates a 3D print service for staff and students of the Faculty of Science.\nThe cost for this service is €0.15 per gram.\nIf you are interested in using our 3D printing service or have any questions, please contact us.\n","permalink":"https://cncz.science.ru.nl/howto/print/","summary":"\u003ch1 id=\"printing\"\u003ePrinting\u003c/h1\u003e\n\u003cblockquote\u003e\n\u003cp\u003eThrough the Radboud University printing system, students and employees are able to print, scan, and copy anywhere on campus, regardless of the location or building at which they study or work. When printing, you send your print job to a print queue instead of a specific printer. The next step is to simply retrieve your print job from any printer. \u003ca href=\"https://www.ru.nl/en/services/services-and-facilities/ict/printing-copying-and-scanning/printing\" target=\"_blank\"\u003eRead more\u0026hellip;\u003c/a\u003e\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003ch2 id=\"printing-from-own-laptop\"\u003ePrinting from own laptop.\u003c/h2\u003e\n\u003cp\u003eIn case printing does not work on self managed devices, documents can be uploaded to \u003ca href=\"https://peage.ru.nl\" target=\"_blank\"\u003ehttps://peage.ru.nl\u003c/a\u003e. Other workarounds are described \u003ca href=\"../printing-workarounds\"\u003ehere\u003c/a\u003e.\u003c/p\u003e","title":"Printing"},{"content":"Mnova is a multivendor software suite designed for processing data from NMR, LC-MS, GC-MS, and Electronic \u0026amp; Vibrational Spectroscopic techniques (UV-VIS, FT-IR etc.).\nMnova is available for installation on Windows, Linux, and MacOS machines. Employees and students from the Faculty of Science can install mestreNova under the university site licence on their personal computer.\nCurrently the faculty holds a site license for MNova 15. Installation \u0026amp; license files can be found on the install share in \\install\\science\\MestreNova.\nAfter installing MestreNova open the application and drag the license files in the workspace. If the computer running the application is connected to the university network (Eduroam, VPN) MNova will validate the license for a three month period. When this license expires it can be renewd by connecting to the university network.\n","permalink":"https://cncz.science.ru.nl/howto/mestrenova/","summary":"\u003cp\u003eMnova is a multivendor software suite designed for processing data from\nNMR, LC-MS, GC-MS, and Electronic \u0026amp; Vibrational Spectroscopic techniques\n(UV-VIS, FT-IR etc.).\u003c/p\u003e\n\u003cp\u003eMnova is available for installation on Windows, Linux, and MacOS\nmachines. Employees and students from the Faculty of Science can install\nmestreNova under the university site licence on their personal computer.\u003c/p\u003e\n\u003cp\u003eCurrently the faculty holds a site license for MNova 15.\nInstallation \u0026amp; license files can be found on the \u003ca href=\"/howto/install-share/\"\u003einstall\nshare\u003c/a\u003e in \u003ccode\u003e\\install\\science\\MestreNova\u003c/code\u003e.\u003c/p\u003e","title":"MestreNova"},{"content":"A broken PDU has offlined a switch, which has caused the VPN server to be unreachable (and several other things, which don\u0026rsquo;t affect users).\n","permalink":"https://cncz.science.ru.nl/cpk/1284/","summary":"\u003cp\u003eA broken PDU has offlined a switch, which has caused the VPN server to\nbe unreachable (and several other things, which don\u0026rsquo;t affect users).\u003c/p\u003e","title":"VPN onbereikbaar"},{"content":"DMARC is increasingly being used as a spamfilter, checking whether the sender ought to send mail via this route. To comply with this for mail sent through Mailman, we will change the From: sender address to the list address. The current:\n\u0026gt; From: Some User \u0026lt;some.user@somewhere.domain\u0026gt; \u0026gt; Sender: \u0026quot;listname\u0026quot; \u0026lt;listname-bounces@science.ru.nl\u0026gt;\nwill be changed to:\n\u0026gt; From: Some User via listname \u0026lt;listname@science.ru.nl\u0026gt; \u0026gt; Reply-To: Some User \u0026lt;some.user@somewhere.domain\u0026gt; \u0026gt; Sender: \u0026quot;listname\u0026quot; \u0026lt;listname-bounces@science.ru.nl\u0026gt;\nIf you filter or forward mail automatically, you might need to change the filter.\n","permalink":"https://cncz.science.ru.nl/news/2021-04-20_mailman-lists-sender-address-change-from-sender-to-list-address/","summary":"\u003cp\u003e\u003ca href=\"https://en.wikipedia.org/wiki/DMARC\" target=\"_blank\"\u003eDMARC\u003c/a\u003e is increasingly being used\nas a spamfilter, checking whether the sender ought to send mail via this\nroute. To comply with this for mail sent through\n\u003ca href=\"https://wiki.cncz.science.ru.nl/index.php?title=Categorie%3AEmail\u0026amp;setlang=en#.5Bnl.5DMailing_lijsten.5B.2Fnl.5D.5Ben.5DMailing_lists.5B.2Fen.5D\" target=\"_blank\"\u003eMailman\u003c/a\u003e,\nwe will change the From: sender address to the list address. The\ncurrent:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003e\u0026gt; From: Some User \u0026lt;some.user@somewhere.domain\u0026gt;\u003c/code\u003e\n\u003ccode\u003e\u0026gt; Sender: \u0026quot;listname\u0026quot; \u0026lt;listname-bounces@science.ru.nl\u0026gt;\u003c/code\u003e\u003c/p\u003e\n\u003cp\u003ewill be changed to:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003e\u0026gt; From: Some User via listname \u0026lt;listname@science.ru.nl\u0026gt;\u003c/code\u003e\n\u003ccode\u003e\u0026gt; Reply-To: Some User \u0026lt;some.user@somewhere.domain\u0026gt;\u003c/code\u003e\n\u003ccode\u003e\u0026gt; Sender: \u0026quot;listname\u0026quot; \u0026lt;listname-bounces@science.ru.nl\u0026gt;\u003c/code\u003e\u003c/p\u003e\n\u003cp\u003eIf you filter or forward mail automatically, you might need to change\nthe filter.\u003c/p\u003e","title":"Mailman lists sender address change: from sender to list address"},{"content":"The support for Ubuntu 16.04 LTS ends on April 30th, 2021. Therefore we will turn off lilo5 with this version of Ubuntu on May 1st, 2021. The default login server (lilo.science.ru.nl) points to lilo7 with Ubuntu 20.04 LTS, but lilo6 with Ubuntu 18.04 LTS will remain available until support for this version ends in 2023. The signatures of the C\u0026amp;CZ loginservers can be checked. Please also check these tips for improving your SSH settings tips for improving your SSH settings.\n","permalink":"https://cncz.science.ru.nl/news/2021-04-20_linux-login-server-lilo5-decommissioned/","summary":"\u003cp\u003eThe support for Ubuntu 16.04 LTS ends on April 30th, 2021. Therefore we\nwill turn off lilo5 with this version of Ubuntu on May 1st, 2021. The\ndefault login server (lilo.science.ru.nl) points to lilo7 with Ubuntu\n20.04 LTS, but lilo6 with Ubuntu 18.04 LTS will remain available until\nsupport for this version ends in 2023. The \u003ca href=\"https://wiki.cncz.science.ru.nl/Hardware_servers#Linux_.5Bloginservers.5D.5Blogin_servers.5D\" target=\"_blank\"\u003esignatures of the C\u0026amp;CZ\nloginservers\u003c/a\u003e\ncan be checked. Please also check these tips for improving your SSH\nsettings \u003ca href=\"https://wiki.cncz.science.ru.nl/SSH#.5Ben.5DSSH_tips_and_settings.5B.2Fen.5D.5Bnl.5DSSH_Instellingen_en_tips.5B.2Fnl.5D\" target=\"_blank\"\u003etips for improving your SSH\nsettings\u003c/a\u003e.\u003c/p\u003e","title":"Linux login server lilo5 decommissioned"},{"content":"Due to an emergency maintenance, the central microsoft exchange server is unavailable for 4 hours. This may also affect systems that are dependent on exchange. E-mail and calendar functionality is expected to be restored when the maintenance is done around 13:30 Today.\n","permalink":"https://cncz.science.ru.nl/cpk/1283/","summary":"\u003cp\u003eDue to an emergency maintenance, the central microsoft exchange server\nis unavailable for 4 hours. This may also affect systems that are\ndependent on exchange. E-mail and calendar functionality is expected to\nbe restored when the maintenance is done around 13:30 Today.\u003c/p\u003e","title":"Central E-mail/Calendar disruption (exchange)"},{"content":"The latest version of Maple, Maple2021, can be found on the Install network share and has been installed on C\u0026amp;CZ managed Linux computers. License codes can be requested from C\u0026amp;CZ helpdesk or postmaster by departments that take part in the license.\n","permalink":"https://cncz.science.ru.nl/news/2021-03-30_maple-new-version-maple2021/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/maple/\"\u003eMaple\u003c/a\u003e, Maple2021, can be found\non the \u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e network share and has been\ninstalled on C\u0026amp;CZ managed Linux computers. License codes can be\nrequested from C\u0026amp;CZ helpdesk or postmaster by departments that take part\nin the license.\u003c/p\u003e","title":"Maple new version: Maple2021"},{"content":"During a routine upgrade of ceph, a bug in the latest version manifested itself and made the ceph manager unreachable. After aborting the upgrade and with help from the ceph-users mailinglist, everything became available again using a workaround.\n","permalink":"https://cncz.science.ru.nl/cpk/1282/","summary":"\u003cp\u003eDuring a routine upgrade of ceph, a bug in the latest version manifested\nitself and made the ceph manager unreachable. After aborting the upgrade\nand with help from the ceph-users mailinglist, everything became\navailable again using a workaround.\u003c/p\u003e","title":"Ceph problem"},{"content":"Because of security issues the last remaining Windows 7 machines wil be disabled, effective 24-03-2021, as member of the Active Directory Domain B-FAC. Please upgrade these computers to a more up-to-date OS.\n","permalink":"https://cncz.science.ru.nl/cpk/1281/","summary":"\u003cp\u003eBecause of security issues the last remaining Windows 7 machines wil be\ndisabled, effective 24-03-2021, as member of the Active Directory Domain\nB-FAC. Please upgrade these computers to a more up-to-date OS.\u003c/p\u003e","title":"Windows 7 computers disabled in B-FAC domain"},{"content":"Because of security issues the last remaining Windows 7 machines wil be disabled, effective 24-03-2021, as member of the Active Directory Domain B-FAC. Please upgrade these computers to a more up-to-date OS. See also previous announcements on Windows 10 and the end of Windows 7.\n","permalink":"https://cncz.science.ru.nl/news/2021-03-23_windows-7-computers-disabled-in-b-fac-domain/","summary":"\u003cp\u003eBecause of security issues the last remaining Windows 7 machines wil be\ndisabled, effective 24-03-2021, as member of the Active Directory Domain\nB-FAC. Please upgrade these computers to a more up-to-date OS. See also\nprevious announcements on \u003ca href=\"https://wiki.cncz.science.ru.nl/Nieuws#.5BMicrosoft_Windows_10_upgrade.5D.5BMicrosoft_Windows_10_upgrade.5D\" target=\"_blank\"\u003eWindows\n10\u003c/a\u003e\nand \u003ca href=\"https://wiki.cncz.science.ru.nl/Nieuws_archief#.5BWindows_7_stopt_januari_2020:_Upgrade_nu.21.5D.5BWindows_7_ends_January_2020:_Upgrade_now.21.5D\" target=\"_blank\"\u003ethe end of Windows\n7\u003c/a\u003e.\u003c/p\u003e","title":"Windows 7 computers disabled in B-FAC domain"},{"content":"The latest version of Matlab, R2021a, is available for departments that have licenses. The software and license codes can be obtained through a mail to postmaster for those entitled to it. The software can also be found on the install-disc. All C\u0026amp;CZ-managed Linux machines will soon have this version installed, an older version (/opt/matlab-R2020a/bin/matlab) is still available temporarily. The C\u0026amp;CZ-managed Windows machines will not receive a new version during the semester to prevent problems with version dependencies in current lectures.\n","permalink":"https://cncz.science.ru.nl/news/2021-03-19_matlab-r2021a-available/","summary":"\u003cp\u003eThe latest version of \u003ca href=\"/howto/matlab/\"\u003eMatlab\u003c/a\u003e, R2021a, is available\nfor departments that have licenses. The software and license codes can\nbe obtained through a mail to postmaster for those entitled to it. The\nsoftware can also be found on the \u003ca href=\"/tags/software\"\u003einstall\u003c/a\u003e-disc. All\nC\u0026amp;CZ-managed Linux machines will soon have this version installed, an\nolder version (/opt/matlab-R2020a/bin/matlab) is still available\ntemporarily. The C\u0026amp;CZ-managed Windows machines will not receive a new\nversion during the semester to prevent problems with version\ndependencies in current lectures.\u003c/p\u003e","title":"Matlab R2021a available"},{"content":"To change the network of lilo7, we need to reboot this loginserver. If you want a stable connection to a loginserver during this downtime, please use lilo6 or the soon to be taken down lilo5. For more info see the page on C\u0026amp;CZ loginservers.\n","permalink":"https://cncz.science.ru.nl/cpk/1280/","summary":"\u003cp\u003eTo change the network of lilo7, we need to reboot this loginserver. If\nyou want a stable connection to a loginserver during this downtime,\nplease use lilo6 or the soon to be taken down lilo5. For more info see\n\u003ca href=\"https://wiki.cncz.science.ru.nl/index.php?title=Hardware_servers\u0026amp;setlang=en#Linux_.5Bloginservers.5D.5Blogin_servers.5D\" target=\"_blank\"\u003ethe page on C\u0026amp;CZ\nloginservers\u003c/a\u003e.\u003c/p\u003e","title":"Lilo7 restart"},{"content":"From now on, C\u0026amp;CZ signs the SSH keys of e.g. loginservers and compute clusternodes. That makes it possible for users, as explained on that page, to add the public signing key in the private .ssh/known_hosts, which makes one trust all C\u0026amp;CZ signed SSH servers. Whenever C\u0026amp;CZ deploys a new ‘lilo’, the question whether this might be spoofing will not occur then.\n","permalink":"https://cncz.science.ru.nl/news/2021-03-09_signed-ssh-keys-for-loginservers-and-compute-clusternodes/","summary":"\u003cp\u003eFrom now on, C\u0026amp;CZ signs the SSH keys of e.g. \u003ca href=\"https://wiki.cncz.science.ru.nl/index.php?title=Hardware_servers\u0026amp;setlang=en#Linux_.5Bloginservers.5D.5Blogin_servers.5D\" target=\"_blank\"\u003eloginservers and compute\nclusternodes\u003c/a\u003e.\nThat makes it possible for users, as explained on that page, to add the\npublic signing key in the private .ssh/known_hosts, which makes one\ntrust all C\u0026amp;CZ signed SSH servers. Whenever C\u0026amp;CZ deploys a new ‘lilo’,\nthe question whether this might be spoofing will not occur then.\u003c/p\u003e","title":"Signed SSH keys for loginservers and compute clusternodes"},{"content":"Organic Chemistry purchased a site license for the use of Gaussian 16 and GaussView 6 with the GMMX Module on Linux. The software has been installed on the cn-cluster. Departments that want to use this, can contact Prof. Jana Roithova or Postmaster.\n","permalink":"https://cncz.science.ru.nl/news/2021-03-09_site-license-for-gaussian-16-and-gaussview-6/","summary":"\u003cp\u003eOrganic Chemistry purchased a site license for the use of \u003ca href=\"https://gaussian.com/gaussian16/\" target=\"_blank\"\u003eGaussian\n16\u003c/a\u003e and \u003ca href=\"https://gaussian.com/gaussview6/\" target=\"_blank\"\u003eGaussView\n6\u003c/a\u003e with the GMMX Module on Linux. The\nsoftware has been installed on the\n\u003ca href=\"https://wiki.cncz.science.ru.nl/index.php?title=Hardware_servers\u0026amp;setlang=en#.5BReken-.5D.5BCompute_.5Dservers.2Fclusters\" target=\"_blank\"\u003ecn-cluster\u003c/a\u003e.\nDepartments that want to use this, can contact Prof. Jana Roithova or\n\u003ca href=\"/howto/contact/\"\u003ePostmaster\u003c/a\u003e.\u003c/p\u003e","title":"Site license for Gaussian 16 and GaussView 6"},{"content":"Yesterday the SSD bootdisk of this VM host reported the first problems. This morning this had the effect of stopping all VMs running on this host. By moving the VMs to a different VM host, the problem has been solved. We will investigate how to best prevent this problem in the future or lessen its impact.\n","permalink":"https://cncz.science.ru.nl/cpk/1279/","summary":"\u003cp\u003eYesterday the SSD bootdisk of this VM host reported the first problems.\nThis morning this had the effect of stopping all VMs running on this\nhost. By moving the VMs to a different VM host, the problem has been\nsolved. We will investigate how to best prevent this problem in the\nfuture or lessen its impact.\u003c/p\u003e","title":"Host of several virtual servers broken: Roundcube, websites and others"},{"content":"The ISC announced that Saturday February 27 08:00-20:00 major RU network maintenance work will be carried out. This will mean that all RU services will be unavailable several times for at most an hour. This concerns all RU services including those of FNWI/C\u0026amp;CZ: e-mail, VPN, wifi, BASS, OSIRIS, Brightspace, Syllabus+, Corsa, etc.\n","permalink":"https://cncz.science.ru.nl/cpk/1277/","summary":"\u003cp\u003eThe ISC \u003ca href=\"https://www.ru.nl/systeem-meldingen/\" target=\"_blank\"\u003eannounced\u003c/a\u003e that Saturday\nFebruary 27 08:00-20:00 major RU network maintenance work will be\ncarried out. This will mean that all RU services will be unavailable\nseveral times for at most an hour. This concerns all RU services\nincluding those of FNWI/C\u0026amp;CZ: e-mail, VPN, wifi, BASS, OSIRIS,\nBrightspace, Syllabus+, Corsa, etc.\u003c/p\u003e","title":"Major RU network maintenance Saturday Feb. 27 08:00-20:00"},{"content":"As of Thursday afternoon, the lilo6 is down due to hardware issues. Because lilo6 was the default linux login server (lilo referred to lilo6), this affected many users of lilo. The impact is limited, because we have alternative lilo\u0026rsquo;s, namely lilo5 and lilo7. As of March 1st lilo now refers to lilo7, ssh will warn about DNS SPOOFING, which is due to the difference host keys for lilo7 ECDSA SHA256:si3g2elo5m6TShx3PjX0+vF50pZ8NK/iXz/ESB+ZeP0\n","permalink":"https://cncz.science.ru.nl/cpk/1278/","summary":"\u003cp\u003eAs of Thursday afternoon, the lilo6 is down due to hardware issues.\nBecause lilo6 was the default linux login server (lilo referred to\nlilo6), this affected many users of lilo. The impact is limited, because\nwe have alternative lilo\u0026rsquo;s, namely lilo5 and lilo7. As of March 1st lilo\nnow refers to lilo7, ssh will warn about DNS SPOOFING, which is due to\nthe difference host keys for lilo7\n\u003ccode\u003eECDSA SHA256:si3g2elo5m6TShx3PjX0+vF50pZ8NK/iXz/ESB+ZeP0\u003c/code\u003e\u003c/p\u003e","title":"Lilo6 down"},{"content":"The ISC announced that Saturday February 27 08:00-20:00 major RU network maintenance work will be carried out. This will mean that all RU services will be unavailable several times for at most an hour. This concerns all RU services including those of FNWI/C\u0026amp;CZ: e-mail, VPN, wifi, BASS, OSIRIS, Brightspace, Syllabus+, Corsa, etc.\n","permalink":"https://cncz.science.ru.nl/news/2021-02-24_major-ru-network-maintenance-saturday-feb-27-0800-2000/","summary":"\u003cp\u003eThe ISC \u003ca href=\"https://www.ru.nl/systeem-meldingen/\" target=\"_blank\"\u003eannounced\u003c/a\u003e that Saturday\nFebruary 27 08:00-20:00 major RU network maintenance work will be\ncarried out. This will mean that all RU services will be unavailable\nseveral times for at most an hour. This concerns all RU services\nincluding those of FNWI/C\u0026amp;CZ: e-mail, VPN, wifi, BASS, OSIRIS,\nBrightspace, Syllabus+, Corsa, etc.\u003c/p\u003e","title":"Major RU network maintenance Saturday Feb. 27 08:00-20:00"},{"content":"The central DNS servers for ru.nl for external requests had problems, because they received too many requests, which resulted in science.ru.nl and others not being found. DNS names within ru.nl then will not resolve to an IP address. We enlarged some TTLs (Time-To+lives) to try to lessen the problem. These small TTLs were meant to be able to move a service to a new server in case of problems, but now they just make the problem bigger. After starting VPN you won\u0026rsquo;t notice this problem, because the internal DNS servers that you use then are not affected. Changes to the RU DNS servers hopefully lessened or removed the problems as of 2021-02-23 14:30.\n","permalink":"https://cncz.science.ru.nl/cpk/1276/","summary":"\u003cp\u003eThe central DNS servers for ru.nl for external requests had problems,\nbecause they received too many requests, which resulted in science.ru.nl\nand others not being found. DNS names within ru.nl then will not resolve\nto an IP address. We enlarged some TTLs (Time-To+lives) to try to lessen\nthe problem. These small TTLs were meant to be able to move a service to\na new server in case of problems, but now they just make the problem\nbigger. After starting VPN you won\u0026rsquo;t notice this problem, because the\ninternal DNS servers that you use then are not affected. Changes to the\nRU DNS servers hopefully lessened or removed the problems as of\n2021-02-23 14:30.\u003c/p\u003e","title":"DNS problems from outside with ru.nl"},{"content":"DNS-servers for ru.nl did not serve information about subdomains such as science.ru.nl. Thus no DNS-name will resolve to an IP address at FNWI. A workaround is to use as DNS servers: 131.174.224.4 en 8.8.8.8. If you try to connect to a service for the first time after ca 11:15, you\u0026rsquo;ll get an error like: \u0026ldquo;No such domain\u0026rdquo; or \u0026ldquo;Cannot resolve\u0026rdquo;. Restarting RU DNS servers at 12:45 may have fixed the problem. Without a real explanation, the problem went away after a few hours.\n","permalink":"https://cncz.science.ru.nl/cpk/1275/","summary":"\u003cp\u003eDNS-servers for ru.nl did not serve information about subdomains such as\nscience.ru.nl. Thus no DNS-name will resolve to an IP address at FNWI. A\nworkaround is to use as DNS servers: 131.174.224.4 en 8.8.8.8. If you\ntry to connect to a service for the first time after ca 11:15, you\u0026rsquo;ll\nget an error like: \u0026ldquo;No such domain\u0026rdquo; or \u0026ldquo;Cannot resolve\u0026rdquo;. Restarting RU\nDNS servers at 12:45 may have fixed the problem. Without a real\nexplanation, the problem went away after a few hours.\u003c/p\u003e","title":"DNS broken for subdomains of ru.nl"},{"content":"Services will not be available for a while because of a GitLab and Mattermost upgrade.\n","permalink":"https://cncz.science.ru.nl/cpk/1274/","summary":"\u003cp\u003eServices will not be available for a while because of a GitLab and\nMattermost upgrade.\u003c/p\u003e","title":"Gitlab upgrade"},{"content":"The expiration date of the certificate of our VPNsec service was apparently not yet checked regularly. This made it possible for the certificate to expire. We put a new certificate into place within an hour. Of course we will check this certificate regularly from now on. For Apple/Mac we needed to construct a new mobileconfig, this took some time, because in the meantime RU had moved to a different Certificate Authority. For Apple macOS this was ready at the end of Feb. 4, with a new installation procedure. For Apple iOS (iPhone/iPad) the old profile has to be deleted and a new mobileconfig has to be installed.\n","permalink":"https://cncz.science.ru.nl/cpk/1273/","summary":"\u003cp\u003eThe expiration date of the certificate of our \u003ca href=\"/howto/vpn\"\u003eVPNsec\u003c/a\u003e\nservice was apparently not yet checked regularly. This made it possible\nfor the certificate to expire. We put a new certificate into place\nwithin an hour. Of course we will check this certificate regularly from\nnow on. For Apple/Mac we needed to construct a new mobileconfig, this\ntook some time, because in the meantime RU had moved to a different\nCertificate Authority. For Apple macOS this was ready at the end of Feb.\n4, with a new installation procedure. For Apple iOS (iPhone/iPad) the\nold profile has to be deleted and a new mobileconfig has to be\ninstalled.\u003c/p\u003e","title":"Science VPNsec disruption"},{"content":"The Science OpenID-service, that was introduced in 2007 as authentication method for the wikis managed by C\u0026amp;CZ, will be terminated March 1, 2021. All wikis will be switched over to a more modern authentication method via SAML.\n","permalink":"https://cncz.science.ru.nl/news/2021-01-26_end-of-science-openid-service/","summary":"\u003cp\u003eThe Science \u003ca href=\"https://openid.science.ru.nl/\" target=\"_blank\"\u003eOpenID-service\u003c/a\u003e, that was\nintroduced in 2007 as authentication method for the wikis managed by\nC\u0026amp;CZ, will be terminated March 1, 2021. All wikis will be switched over\nto a more modern authentication method via\n\u003ca href=\"https://en.wikipedia.org/wiki/Security_Assertion_Markup_Language\" target=\"_blank\"\u003eSAML\u003c/a\u003e.\u003c/p\u003e","title":"End of Science OpenID service"},{"content":"The old installation method, used with Matlab R2020b, highlighted several problems for some users. The solution was found in a different installation method. Some users will prefer the new method, others the old one. Each has its pros and cons. The new installation method makes Matlab easy to install, also for older versions and can be done with a small download if you only want a few toolboxes. But it requires signing in at The MathWorks and thus has a more complex workflow. The old installation method does not require registration and has an easy workflow, but it always requires a large download and non-expert macOS users will find it troublesome because the newest macOS version will quarantine the download.\n","permalink":"https://cncz.science.ru.nl/news/2021-01-26_new-improved-installation-methods-for-matlab/","summary":"\u003cp\u003eThe old installation method, used with Matlab R2020b, highlighted\nseveral problems for some users. The solution was found in a different\ninstallation method. Some users will prefer the new method, others the\nold one. Each has its pros and cons. The new installation method makes\nMatlab easy to install, also for older versions and can be done with a\nsmall download if you only want a few toolboxes. But it requires signing\nin at The MathWorks and thus has a more complex workflow. The old\ninstallation method does not require registration and has an easy\nworkflow, but it always requires a large download and non-expert macOS\nusers will find it troublesome because the newest macOS version will\nquarantine the download.\u003c/p\u003e","title":"New improved installation methods for Matlab"},{"content":"medewerkers, studenten\nDue to a management operation (planned around this time), the DIY website was unusable. Since the time was very early, it\u0026rsquo;s expected nobody was inconvenienced by this temporary unavailability.\n","permalink":"https://cncz.science.ru.nl/cpk/1272/","summary":"\u003cp\u003e\u003citemTags\u003emedewerkers, studenten\u003c/itemTags\u003e\u003c/p\u003e\n\u003cp\u003eDue to a management operation (planned around this time), the DIY\nwebsite was unusable. Since the time was very early, it\u0026rsquo;s expected\nnobody was inconvenienced by this temporary unavailability.\u003c/p\u003e","title":"DIY temporarily not usable"},{"content":"medewerkers, studenten\nA configuration change unwantedly made the smtp service unusable. When we noticed this, it was repaired immediately.\n","permalink":"https://cncz.science.ru.nl/cpk/1271/","summary":"\u003cp\u003e\u003citemTags\u003emedewerkers, studenten\u003c/itemTags\u003e\u003c/p\u003e\n\u003cp\u003eA configuration change unwantedly made the smtp service unusable. When\nwe noticed this, it was repaired immediately.\u003c/p\u003e","title":"Science smtp service temporarily not usable"},{"content":"medewerkers, studenten\nA configuration change had as unwanted effect the disappearance of all very long mail aliases. When this was reported next morning, it was repaired immediately.\n","permalink":"https://cncz.science.ru.nl/cpk/1270/","summary":"\u003cp\u003e\u003citemTags\u003emedewerkers, studenten\u003c/itemTags\u003e\u003c/p\u003e\n\u003cp\u003eA configuration change had as unwanted effect the disappearance of all\nvery long mail aliases. When this was reported next morning, it was\nrepaired immediately.\u003c/p\u003e","title":"Very long mail aliases temporarily not usable"},{"content":"medewerkers, studenten\nDue to a simple management command the switch (as-ak008-04) crasht and had to be reset manually. The switch sits between the network and servers for gitlab+mattermost, licenses and the database for DHZ(diy).\n","permalink":"https://cncz.science.ru.nl/cpk/1269/","summary":"\u003cp\u003e\u003citemTags\u003emedewerkers, studenten\u003c/itemTags\u003e\u003c/p\u003e\n\u003cp\u003eDue to a simple management command the switch (as-ak008-04) crasht and\nhad to be reset manually. The switch sits between the network and\nservers for gitlab+mattermost, licenses and the database for DHZ(diy).\u003c/p\u003e","title":"Switch crash; gitlab+mattermost, licenses and DHZ"},{"content":"A new version of Mathematica (12.2.0) has been installed on all C\u0026amp;CZ managed Linux systems, older versions can still be found in /vol/mathematica. The installation files for Windows and Linux can be found on the Install-disk, also for older versions of Mathematica. Departments that take part in the license can request installation and license info from C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/news/2021-01-05_new-version-of-mathematica-1220/","summary":"\u003cp\u003eA new version of \u003ca href=\"/howto/mathematica/\"\u003eMathematica\u003c/a\u003e (12.2.0) has been\ninstalled on all C\u0026amp;CZ managed Linux systems, older versions can still be\nfound in \u003ccode\u003e/vol/mathematica\u003c/code\u003e. The installation files for Windows and\nLinux can be found on the \u003ca href=\"/howto/install-share/\"\u003eInstall\u003c/a\u003e-disk, also\nfor older versions of Mathematica. Departments that take part in the\nlicense can request installation and license info from C\u0026amp;CZ.\u003c/p\u003e","title":"New version of Mathematica (12.2.0)"},{"content":"medewerkers, studenten\nServices will not be available for a while because of a GitLab and Mattermost upgrade.\n","permalink":"https://cncz.science.ru.nl/cpk/1268/","summary":"\u003cp\u003e\u003citemTags\u003emedewerkers, studenten\u003c/itemTags\u003e\u003c/p\u003e\n\u003cp\u003eServices will not be available for a while because of a GitLab and\nMattermost upgrade.\u003c/p\u003e","title":"Gitlab upgrade"},{"content":"Lending laptop pool General remarks The Faculty of Science has a pool of 60 RU-standard laptops that can be lent by employees and students of the Faculty. These are standard-RU laptops. They are almost identical in use to the pc’s in the computer labs. The main difference is that reservation is not through Housing \u0026amp; Logistics.\nThe reservation of the laptops is administered by the Library of Science. Use for FNWI education has precedence.\nUsage How to log in with Windows? You can log on to the laptops with:\neither with a Science loginname and the corresponding password or a RU account: RU\\s123456 and the corresponding password Any questions? For reservations, please contact the Library of Science. For technical questions, please contact C\u0026amp;CZ directly.\nLending procedure The borrower promises by signing the laptop lending agreement to agree with the lending regulations of the Faculty of Science for lending laptops to students and employees.\nTrolley In some special cases, a complete trolley with maximum 20 laptops can be lent for Faculty education. The trolley has been modified by C\u0026amp;CZ in such a way, that the laptops are connected by UTP-cable to the network, in order to have automatic updates working.\n","permalink":"https://cncz.science.ru.nl/howto/laptop-pool/","summary":"\u003ch2 id=\"lending-laptop-pool\"\u003eLending laptop pool\u003c/h2\u003e\n\u003ch3 id=\"general-remarks\"\u003eGeneral remarks\u003c/h3\u003e\n\u003cp\u003eThe Faculty of Science has a pool of 60 RU-standard laptops that can be\nlent by employees and students of the Faculty. These are \u003ca href=\"/howto/terminalkamers/\"\u003estandard-RU\nlaptops\u003c/a\u003e. They are almost identical in use to\nthe pc’s in the \u003ca href=\"/howto/terminalkamers/\"\u003ecomputer labs\u003c/a\u003e. The main\ndifference is that reservation is not through Housing \u0026amp; Logistics.\u003c/p\u003e\n\u003cp\u003eThe reservation of the laptops is administered by the \u003ca href=\"https://www.ru.nl/en/about-us/the-campus/buildings-and-spaces/huygens-building/library-of-science\" target=\"_blank\"\u003eLibrary of\nScience\u003c/a\u003e. Use for FNWI education has\nprecedence.\u003c/p\u003e","title":"Laptop pool"},{"content":"The ISC announced: For security reasons, the certificate of the wifi server will be replaced in the evening of Friday, July 10. This has consequences for connecting your mobile device to Eduroam when you’re on campus:\n• If you get the message that you have to accept the new certificate to use eduroam, choose \u0026lsquo;yes\u0026rsquo;. You can then use eduroam again;\n• If you don\u0026rsquo;t get this message and can\u0026rsquo;t connect to Eduroam, choose the wireless network \u0026rsquo;eduroam-config\u0026rsquo;. Accept the terms and conditions. Follow the instructions to reinstall Eduroam.\nMore information can also be found at www.ru.nl/ict-uk/eduroam (you will need an internet connection for this).\nIf you have any questions, please contact the ICT Helpdesk (024 - 36 22222).\n","permalink":"https://cncz.science.ru.nl/cpk/1267/","summary":"\u003cp\u003eThe ISC announced: For security reasons, the certificate of the wifi\nserver will be replaced in the evening of Friday, July 10. This has\nconsequences for connecting your mobile device to Eduroam when you’re on\ncampus:\u003c/p\u003e\n\u003cp\u003e• If you get the message that you have to accept the new certificate to\nuse eduroam, choose \u0026lsquo;yes\u0026rsquo;. You can then use eduroam again;\u003c/p\u003e\n\u003cp\u003e• If you don\u0026rsquo;t get this message and can\u0026rsquo;t connect to Eduroam, choose the\nwireless network \u0026rsquo;eduroam-config\u0026rsquo;. Accept the terms and conditions.\nFollow the instructions to reinstall Eduroam.\u003c/p\u003e","title":"Eduroam problem on campus"},{"content":"How can I access my course file?\nThe course files is an network disk that can be attached on campus. Off-campus, VPN must be used to attach this network disk. More info on how to attach a network disk and on using VPN is available. Linux users have the alternative to login with ‘ssh’ on the Science loginserver lilo, followed by a cd to /vol/cursusdossiers.\nWindows:\nAt ‘File Explorer’, choose the option ‘Map Network Drive’, and type in file://cursusdossiers-srv.science.ru.nl/cursusdossiers and pick your drive letter of choice. By doing so, you will link up the network disk to your local computer. The next options are also possible to get a more limited set of courses:\nGeneral file://cursusdossiers-srv.science.ru.nl/cdAlgemeen\nBiology file://cursusdossiers-srv.science.ru.nl/cdBiow\nComputing Science and file://cursusdossiers-srv.science.ru.nl/cdOii Information Science\nIsis file://cursusdossiers-srv.science.ru.nl/cdIsis\nMolecular Life Sciences file://cursusdossiers-srv.science.ru.nl/cdOmw\nMathematics and Physics \u0026amp; file://cursusdossiers-srv.science.ru.nl/cdWinst Astronomy\nOr\nCourses with the codes NWI-Bx file://cursusdossiers-srv.science.ru.nl/cdbiow and -TWM:\nCourses with the codes NWI-fxxx file://cursusdossiers-srv.science.ru.nl/cdisis and -GCSE:\nCourses with the code NWI-Ixxx: file://cursusdossiers-srv.science.ru.nl/cdoii\nCourses with the codes NWI-MOL file://cursusdossiers-srv.science.ru.nl/cdomw and -SM:\nCourses with the code NWI-Nx: file://cursusdossiers-srv.science.ru.nl/cdwinst\n","permalink":"https://cncz.science.ru.nl/howto/coursefiles/","summary":"\u003cp\u003eHow can I access my course file?\u003c/p\u003e\n\u003cp\u003eThe course files is an network disk that can be attached on campus.\nOff-campus, VPN must be used to attach this network disk. More info on\n\u003ca href=\"/howto/netwerkschijf/\"\u003ehow to attach a network disk\u003c/a\u003e and on \u003ca href=\"/howto/vpn/\"\u003eusing\nVPN\u003c/a\u003e is available. Linux users have the alternative to\nlogin with ‘ssh’ on the Science loginserver lilo, followed by a cd to\n/vol/cursusdossiers.\u003c/p\u003e\n\u003cp\u003eWindows:\u003c/p\u003e\n\u003cp\u003eAt ‘File Explorer’, choose the option ‘Map Network Drive’, and type in\n\u003ca href=\"file://cursusdossiers-srv.science.ru.nl/cursusdossiers\"\u003efile://cursusdossiers-srv.science.ru.nl/cursusdossiers\u003c/a\u003e and pick your\ndrive letter of choice. By doing so, you will link up the network disk\nto your local computer. The next options are also possible to get a more\nlimited set of courses:\u003c/p\u003e","title":"CourseFiles"},{"content":"Several parts have been replaced. We assume the problem, that occurred twice, is now resolved. For dual-boot pcs, the boot menu was served by an alternative method during the repair.\n","permalink":"https://cncz.science.ru.nl/cpk/1265/","summary":"\u003cp\u003eSeveral parts have been replaced. We assume the problem, that occurred\ntwice, is now resolved. For dual-boot pcs, the boot menu was served by\nan alternative method during the repair.\u003c/p\u003e","title":"Webserver 'havik' offline"},{"content":"Affected : Users of Science VPN and Eduroam based on science account\nThe certificate of the LDAP servers has been replaced this morning, this has also changed the certificate chain. The radius server uses LDAP as authentication backend and in the radius configuration the certificate chain had to be changed too. This was initially overlooked. Radius is the authentication mechanism used by all VPN servers and Eduroam\n","permalink":"https://cncz.science.ru.nl/cpk/1264/","summary":"\u003cp\u003eAffected : Users of Science VPN and Eduroam based on science account\u003c/p\u003e\n\u003cp\u003eThe certificate of the LDAP servers has been replaced this morning, this\nhas also changed the certificate chain. The radius server uses LDAP as\nauthentication backend and in the radius configuration the certificate\nchain had to be changed too. This was initially overlooked. Radius is\nthe authentication mechanism used by all VPN servers and Eduroam\u003c/p\u003e","title":"Science radius disruption"},{"content":"The server went down in the same way as the previous time (3rd of June 2020). The cause is most likely a system board problem. This part will be replaced Tomorrow by a support engineer.\n","permalink":"https://cncz.science.ru.nl/cpk/1263/","summary":"\u003cp\u003eThe server went down in the same way as the previous time (3rd of June\n2020). The cause is most likely a system board problem. This part will\nbe replaced Tomorrow by a support engineer.\u003c/p\u003e","title":"Webserver 'havik' offline"},{"content":"by a website) and various websites.\nThe server couldn\u0026rsquo;t be reached after the scheduled weekly reboot, not even on its management interface. Because also C\u0026amp;CZ employees work from home and the interruption didn\u0026rsquo;t get enough urgency fast enough, the interruption lasted too long, apologies for that. The support partner has been contacted and the server has been updated, but the origin of the problem is still unclear. We will also look at making these services more redundant or more easily movable to a different server.\n","permalink":"https://cncz.science.ru.nl/cpk/1262/","summary":"\u003cp\u003eby a website) and various websites.\u003c/p\u003e\n\u003cp\u003eThe server couldn\u0026rsquo;t be reached after the scheduled weekly reboot, not\neven on its management interface. Because also C\u0026amp;CZ employees work from\nhome and the interruption didn\u0026rsquo;t get enough urgency fast enough, the\ninterruption lasted too long, apologies for that. The support partner\nhas been contacted and the server has been updated, but the origin of\nthe problem is still unclear. We will also look at making these services\nmore redundant or more easily movable to a different server.\u003c/p\u003e","title":"Webserver 'havik' offline"},{"content":"Due to a failed BIOS upgrade, the hardware of the database server appears to be bricked. We transfered the disks to another machine (cn00) and all database services are now up again, at the cost of not having cn00 running. When the hardware is working well again, we will swap it all back and restore the original situation.\n","permalink":"https://cncz.science.ru.nl/cpk/1261/","summary":"\u003cp\u003eDue to a failed BIOS upgrade, the hardware of the database server\nappears to be bricked. We transfered the disks to another machine (cn00)\nand all database services are now up again, at the cost of not having\ncn00 running. When the hardware is working well again, we will swap it\nall back and restore the original situation.\u003c/p\u003e","title":"CN00 Slurm master ubuntu 16.04 down"},{"content":"Due to a failed BIOS upgrade, the hardware of the database server appears to be bricked. We transfered the disks to another machine (cn00) and all database services are now up again, at the cost of not having cn00 running. When the hardware is working well again, we will swap it all back and restore the original situation.\nUpdate May 19th, 12:15 : hardware fixed, situation back to the original state.\n","permalink":"https://cncz.science.ru.nl/cpk/1260/","summary":"\u003cp\u003eDue to a failed BIOS upgrade, the hardware of the database server\nappears to be bricked. We transfered the disks to another machine (cn00)\nand all database services are now up again, at the cost of not having\ncn00 running. When the hardware is working well again, we will swap it\nall back and restore the original situation.\u003c/p\u003e\n\u003cp\u003eUpdate May 19th, 12:15 : hardware fixed, situation back to the original\nstate.\u003c/p\u003e","title":"Sperwer Database server storing"},{"content":"Due to performance tuning having gone wrong the jitsi.science.ru.nl conference rooms cannot be joined by more than one person at the moment. Solved by reinstalling server.\n","permalink":"https://cncz.science.ru.nl/cpk/1259/","summary":"\u003cp\u003eDue to performance tuning having gone wrong the jitsi.science.ru.nl\nconference rooms cannot be joined by more than one person at the moment.\nSolved by reinstalling server.\u003c/p\u003e","title":"Jitsi.science.ru.nl not working properly"},{"content":"The new certificate of the Science mailserver hadn\u0026rsquo;t yet been placed in the right place. The expiration of the old certificate caused a problem for Science mail users, that was resolved by replacing the old certificate.\n","permalink":"https://cncz.science.ru.nl/cpk/1258/","summary":"\u003cp\u003eThe new certificate of the Science mailserver hadn\u0026rsquo;t yet been placed in\nthe right place. The expiration of the old certificate caused a problem\nfor Science mail users, that was resolved by replacing the old\ncertificate.\u003c/p\u003e","title":"Mailserver certificate problem"},{"content":"March 25, a rule \u0026ldquo;2020 Radboud Universiteit\u0026rdquo; was added to the Science spamfilter. Recently, this matched RU-central mailings. Therefore RU-wide mailings from e.g. the RU Board and Radboud Recharge have erroneously been delivered in the Spam folder of Science emplyees. The Science spamfilter tries to fight spam and phishing, this is partly manual work in which errors can\u0026rsquo;t be excluded. C\u0026amp;CZ apologizes for the inconvenience this has caused.\n","permalink":"https://cncz.science.ru.nl/cpk/1266/","summary":"\u003cp\u003eMarch 25, a rule \u0026ldquo;2020 Radboud Universiteit\u0026rdquo; was added to the Science\nspamfilter. Recently, this matched RU-central mailings. Therefore\nRU-wide mailings from e.g. the RU Board and Radboud Recharge have\nerroneously been delivered in the Spam folder of Science emplyees. The\nScience spamfilter tries to fight spam and phishing, this is partly\nmanual work in which errors can\u0026rsquo;t be excluded. C\u0026amp;CZ apologizes for the\ninconvenience this has caused.\u003c/p\u003e","title":"RU mail erroneously in Spam folder"},{"content":"A critical security update for GitLab has been released and is being installed this moment. During the update, GitLab is offline.\n","permalink":"https://cncz.science.ru.nl/cpk/1257/","summary":"\u003cp\u003eA critical security update for GitLab has been released and is being\ninstalled this moment. During the update, GitLab is offline.\u003c/p\u003e","title":"Unplanned GitLab security update"},{"content":"The virtual machine host ‘oscar’ stopped running at 5:30am. The listed virtual machines are not running at the moment. We are working on it. Update: Resolved. Again, a broken LVM snapshot caused the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1256/","summary":"\u003cp\u003eThe virtual machine host ‘oscar’ stopped running at 5:30am. The listed\nvirtual machines are not running at the moment. We are working on it.\nUpdate: Resolved. Again, a broken LVM snapshot caused the problem.\u003c/p\u003e","title":"Problems with a virtual host"},{"content":"A failed PDU caused the servers with a single Powersupply to die and restart after the PDU was replaced. Running jobs were not finished on these nodes.\n","permalink":"https://cncz.science.ru.nl/cpk/1255/","summary":"\u003cp\u003eA failed PDU caused the servers with a single Powersupply to die and\nrestart after the PDU was replaced. Running jobs were not finished on\nthese nodes.\u003c/p\u003e","title":"Power Distribution Unit failure"},{"content":"A loose power cable caused an interruption of one of our web servers. The machine is equipped with redundant power supplies. It’s not clear why a single loose cable caused a service interruption.\n","permalink":"https://cncz.science.ru.nl/cpk/1254/","summary":"\u003cp\u003eA loose power cable caused an interruption of one of our web servers.\nThe machine is equipped with redundant power supplies. It’s not clear\nwhy a single loose cable caused a service interruption.\u003c/p\u003e","title":"Webserver 'havik' offline"},{"content":"New Intel compilers (Intel OneAPI Base and HPC Toolkits) The newest versions of the Intel compilers, available under the name Intel OneAPI, do no longer require a license, they are freely available. The 2023.2 version has been installed on C\u0026amp;CZ managed Ubuntu systems. When they are available, the module command\nmodule avail will list among others \u0026ldquo;compiler/latest\u0026rdquo;, so e.g. the Intel C (icc) and Fortran (ifort) compilers can be used after typing\nmodule add compiler/latest Old Intel compilers (2019u5 / 2019u4 / 2019 / 2014) C\u0026amp;CZ has bought together with TCM and Theoretical Chemistry two licences for concurrent use of the Intel Parallel Studio XE for Linux. Different versions have been installed in /vol/opt/intelcompilers and is available on a.o. clusternodes en loginservers. To set the environment variables correctly, SH/BASH users must first run:\nsource /vol/opt/intelcompilers/intel-2019u5/composerxe/bin/compilervars.sh intel64 and CSH users must run:\nsetenv arch intel64 source /vol/opt/intelcompilers/intel-2019u5/composerxe/bin/compilervars.csh intel64 After that, icc -V returns the version number as output. For older versions, substitute “2019u5” with “2019u4”, “2019” or “2014”.\nA very useful resource is intel-mkl-link-line-advisor which will advise you on compiler and linker options for using the MKL.\nDocumentation for the previous version (2011) Compiling Fortran (/opt/intel/bin/ifort) Intel Fortran Composer XE 2011 Getting Started Tutorials Intel Fortran Compiler XE 12.0 User and Reference Guides Math Kernel Library (mkl, linking blas, lapack) Intel Math Kernel Library for Linux OS User’ Guide Linking with the Intel Math Kernel Library Intel Math Kernel Library Reference Manual Intel Cluster Studio 2011 Intel Cluster Studio 2011 for Linux* OS - index to all local documentation Intel® MPI Library for Linux OS Documentation Index How to create a standalone MKL version of BLAS and LAPACK shared libraries ? This is described in detail in Building Custom Shared Objects\nCreate a new directory (e.g. ~/lib) mkdir ~/lib\ncd ~/lib\nCopy these files: cp /opt/intel/composerxe/mkl/tools/builder/{makefile,blas_list,lapack_list} ~/lib\nSet the MKLROOT variable (in bash): MKLROOT=/opt/intel/mkl\nexport MKLROOT\nIn tcsh use:\nsetenv MKLROOT /opt/intel/mkl\nMake the shared libraries libblas_mkl.so and liblapack_mkl.so make libintel64 export=blas_list interface=lp64 threading=parallel name=libblas_mkl\nmake libintel64 export=lapack_list interface=lp64 threading=parallel name=liblapack_mkl\nThe options are described here\nThe newly created libblas_mkl.so and liblapack_mkl.so require\n/opt/intel/lib/intel64/libiomp5.so\nto work. On the cluster nodes this file is automatically linked when required.\nUsing the MKL BLAS and LAPACK shared libraries (with Scilab) This should work for any executable that uses a dynamically linked blas or lapack. We use Scilab as an example.\nMake sure we have an executable, not just a script that calls the executable: file scilab-bin\nThe output looks something like this:\nscilab-bin: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.15 ...\nDetermine the exact name that is used by the executable: ldd scilab-bin | grep blas\nThe output could be:\nlibblas.so.3gf =\u0026gt; ~/sciab-5.4.1/lib/thirdparty/libblas.so.3gf\nReplace the library with a link to the MKL version cd ~/sciab-5.4.1/lib/thirdparty/\nrm libblas.so.3gf\nln -s ~/lib/libblas_mkl.so libblas.so.3gf\nAlso follow this procedure for lapack.\nTo use more than one thread, i.e., for parallel computation, set: MKL_NUM_THREADS=4\nexport MKL_NUM_THREADS\nThis example will use 4 cores.\nTo check the number of cores available, use: cat /proc/cpuinfo | grep processor | wc\n","permalink":"https://cncz.science.ru.nl/howto/intel-compilers/","summary":"\u003ch3 id=\"new-intel-compilers-intel-oneapi-base-and-hpc-toolkits\"\u003eNew Intel compilers (Intel OneAPI Base and HPC Toolkits)\u003c/h3\u003e\n\u003cp\u003eThe newest versions of the Intel compilers, available under the name Intel OneAPI, do no longer require a license, they are freely available.\nThe 2023.2 version has been installed on C\u0026amp;CZ managed Ubuntu systems. When they are available, the module command\u003c/p\u003e\n\u003cdiv class=\"highlight\"\u003e\u003cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;\"\u003e\u003ccode class=\"language-sh\" data-lang=\"sh\"\u003e\u003cspan style=\"display:flex;\"\u003e\u003cspan\u003emodule avail\n\u003c/span\u003e\u003c/span\u003e\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\u003cp\u003ewill list among others \u0026ldquo;compiler/latest\u0026rdquo;, so e.g. the Intel C (icc) and Fortran (ifort) compilers can be used after typing\u003c/p\u003e","title":"Intel compilers"},{"content":"Due to a configuration error, the NFS service on file server ‘peck’ refused to start. After fixing the error, the NFS service started up correctly.\n","permalink":"https://cncz.science.ru.nl/cpk/1253/","summary":"\u003cp\u003eDue to a configuration error, the NFS service on file server ‘peck’\nrefused to start. After fixing the error, the NFS service started up\ncorrectly.\u003c/p\u003e","title":"NFS service interruption"},{"content":"students WWW by students All student associations of the Science Faculty have their own WWW service. These are\nThalia (Computer Science), 1 Desda (Mathematics), 2 Sigma (Chemistry), 3 Marie Curie (Physics), 4 BeeVee (Biology), 5 Leonardo (Sciences), 6 Students who would like to start their own www service are advised to contact their association using the association’s website or by sending a mail to one of the mail addresses.\nIf that doesn’t work out you can always visit C\u0026amp;CZ and talk to one of the system administrators to see if it is possible to start a new WWW service.\n","permalink":"https://cncz.science.ru.nl/howto/internet-studenten/","summary":"\u003ch2 id=\"students\"\u003estudents\u003c/h2\u003e\n\u003ch2 id=\"www-by-students\"\u003eWWW by students\u003c/h2\u003e\n\u003cp\u003eAll student associations of the Science Faculty have their\nown WWW service. These are\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"http://www.thalia.nu/\" target=\"_blank\"\u003eThalia\u003c/a\u003e (Computer\nScience), \u003cem\u003e\u003ca href=\"mailto:www-thalia@science.ru.nl\"\u003e1\u003c/a\u003e\u003c/em\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.desda.org/\" target=\"_blank\"\u003eDesda\u003c/a\u003e (Mathematics),\n\u003cem\u003e\u003ca href=\"mailto:www-desda@science.ru.nl\"\u003e2\u003c/a\u003e\u003c/em\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.vcmw-sigma.nl/\" target=\"_blank\"\u003eSigma\u003c/a\u003e (Chemistry),\n\u003cem\u003e\u003ca href=\"mailto:www-sigma@science.ru.nl\"\u003e3\u003c/a\u003e\u003c/em\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"http://www.marie.science.ru.nl/\" target=\"_blank\"\u003eMarie Curie\u003c/a\u003e\n(Physics), \u003cem\u003e\u003ca href=\"mailto:www-marie@science.ru.nl\"\u003e4\u003c/a\u003e\u003c/em\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"http://www.beevee.science.ru.nl/\" target=\"_blank\"\u003eBeeVee\u003c/a\u003e\n(Biology), \u003cem\u003e\u003ca href=\"mailto:www-beevee@science.ru.nl\"\u003e5\u003c/a\u003e\u003c/em\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"http://www.leonardo.science.ru.nl/\" target=\"_blank\"\u003eLeonardo\u003c/a\u003e\n(Sciences),\n\u003cem\u003e\u003ca href=\"mailto:www-leonardo@science.ru.nl\"\u003e6\u003c/a\u003e\u003c/em\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eStudents who would like to start their own www service are advised to\ncontact their association using the association’s website or by sending\na mail to one of the mail addresses.\u003c/p\u003e\n\u003cp\u003eIf that doesn’t work out you can always visit C\u0026amp;CZ and talk to one of\nthe \u003ca href=\"/howto/systeemontwikkeling/\"\u003esystem administrators\u003c/a\u003e\nto see if it is possible to start a new WWW service.\u003c/p\u003e","title":"Internet studenten"},{"content":"At the weekly reboot of vmhost ‘oscar’, it did not boot properly. The listed virtual machines are not running at the moment. We are working on it. Update: most probably, the problems where caused by full snapshots. After removal of the snapshots, the system booted properly.\n","permalink":"https://cncz.science.ru.nl/cpk/1252/","summary":"\u003cp\u003eAt the weekly reboot of vmhost ‘oscar’, it did not boot properly. The\nlisted virtual machines are not running at the moment. We are working on\nit. Update: most probably, the problems where caused by full snapshots.\nAfter removal of the snapshots, the system booted properly.\u003c/p\u003e","title":"Boot problems of virtual host"},{"content":"Due to an administrative error the mailboxen of a few hundreds of users became inaccessible. Mail couldn’t be read from or delivered to these mailboxes until this had been repaired. In this period the mailclient of 19 users tried to read the mailbox and thus possibly reported an error.\n","permalink":"https://cncz.science.ru.nl/cpk/1251/","summary":"\u003cp\u003eDue to an administrative error the mailboxen of a few hundreds of users\nbecame inaccessible. Mail couldn’t be read from or delivered to these\nmailboxes until this had been repaired. In this period the mailclient of\n19 users tried to read the mailbox and thus possibly reported an error.\u003c/p\u003e","title":"Mailbox problems for a few users"},{"content":"A new receiving mailserver was introduced July 1. This server has the most recent version of Ubuntu and other software and settings that are more conforming to the directives (in Dutch). After the introduction, problems appeared with receiving mail from Microsoft Office 365 Exchange Online (mail.protection.outlook.com). An even bigger problem was that some accepted mails were not forwarded, but bounced to the sender. Because that problem couldn’t be fixed immediately, the newly introduced server has been shut down on July 2. At the end of August, C\u0026amp;CZ will test the probable solution. If the test succeeds, the new incoming server will be put into production.\n","permalink":"https://cncz.science.ru.nl/cpk/1250/","summary":"\u003cp\u003eA new receiving mailserver was introduced July 1. This server has the\nmost recent version of Ubuntu and other software and settings that are\nmore conforming to \u003ca href=\"https://www.forumstandaardisatie.nl/open-standaarden/lijst/verplicht?f%5B0%5D=field_keywords%3A68\" target=\"_blank\"\u003ethe directives (in\nDutch)\u003c/a\u003e.\nAfter the introduction, problems appeared with receiving mail from\nMicrosoft Office 365 Exchange Online (mail.protection.outlook.com). An\neven bigger problem was that some accepted mails were not forwarded, but\nbounced to the sender. Because that problem couldn’t be fixed\nimmediately, the newly introduced server has been shut down on July 2.\nAt the end of August, C\u0026amp;CZ will test the probable solution. If the test\nsucceeds, the new incoming server will be put into production.\u003c/p\u003e","title":"Mail problems with newly introduced incoming mail server"},{"content":"Due to a faulty RU core network device, several service couldn’t be reached. This device is in a redundant setup. The ISC network department will start an investigation what exactly happened and how to prevent nuisance in the future.\n","permalink":"https://cncz.science.ru.nl/cpk/1249/","summary":"\u003cp\u003eDue to a faulty RU core network device, several service couldn’t be\nreached. This device is in a redundant setup. The\n\u003ca href=\"https://www.ru.nl/ict-uk/\" target=\"_blank\"\u003eISC\u003c/a\u003e network department will start an\ninvestigation what exactly happened and how to prevent nuisance in the\nfuture.\u003c/p\u003e","title":"Network interruption central RU network"},{"content":"Yesterday afternoon a DNS error with science.ru.nl (due to the introduction of the secure DNSSEC) made science.ru.nl disappear from the internet for many users, when viewed from outside campus. In the evening this error has been corrected. Because of the caching of DNS responses, the last problems should disappear tonight. In the meantime one can use workarounds like rebooting the home router and/or pc, using a different network (mobile provider) or using rainloop.science.ru.nl instead of roundcube.science.ru.nl for webmail access.\n","permalink":"https://cncz.science.ru.nl/cpk/1247/","summary":"\u003cp\u003eYesterday afternoon a DNS error with science.ru.nl (due to the\nintroduction of the secure DNSSEC) made science.ru.nl disappear from the\ninternet for many users, when viewed from outside campus. In the evening\nthis error has been corrected. Because of the caching of DNS responses,\nthe last problems should disappear tonight. In the meantime one can use\nworkarounds like rebooting the home router and/or pc, using a different\nnetwork (mobile provider) or using rainloop.science.ru.nl instead of\nroundcube.science.ru.nl for webmail access.\u003c/p\u003e","title":"DNS nameservice interruption for Science domains"},{"content":"Because a web application used too much memory, all websites of this webserver had problems. After restarting the webserver, all websites could be reached again. We will make sure that web applications get memory limits, which will prevent this problem in the future.\n","permalink":"https://cncz.science.ru.nl/cpk/1248/","summary":"\u003cp\u003eBecause a web application used too much memory, all websites of this\nwebserver had problems. After restarting the webserver, all websites\ncould be reached again. We will make sure that web applications get\nmemory limits, which will prevent this problem in the future.\u003c/p\u003e","title":"Dozens of Science websites down, also Roundcube"},{"content":"Due to a faulty network switch, approx 40 network connections in Huygens wing 4 were temporarily unavailable. The switch has been replaced.\n","permalink":"https://cncz.science.ru.nl/cpk/1246/","summary":"\u003cp\u003eDue to a faulty network switch, approx 40 network connections in Huygens\nwing 4 were temporarily unavailable. The switch has been replaced.\u003c/p\u003e","title":"Network interruption Huygens wing 4"},{"content":"This morning, the Matlab license server stopped, because yesterday an error had been made in the upgrade to version R2019a. After the error had been corrected, the license server was restarted, which resolved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1245/","summary":"\u003cp\u003eThis morning, the Matlab license server stopped, because yesterday an\nerror had been made in the upgrade to version R2019a. After the error\nhad been corrected, the license server was restarted, which resolved the\nproblem.\u003c/p\u003e","title":"Matlab license server down"},{"content":"The poster printer has to be repaired, but we can’t easily fix it. We hope to have the printer operational again in the near future. In the meantime you might use the RU copyshop.\n","permalink":"https://cncz.science.ru.nl/cpk/1244/","summary":"\u003cp\u003eThe \u003ca href=\"/howto/kamerbreed/\"\u003eposter printer\u003c/a\u003e has to be repaired, but we\ncan’t easily fix it. We hope to have the printer operational again in\nthe near future. In the meantime you might use the \u003ca href=\"http://www.ru.nl/facilitairbedrijf/winkels/copyshop/\" target=\"_blank\"\u003eRU\ncopyshop\u003c/a\u003e.\u003c/p\u003e","title":"Poster printer \"kamerbreed\" broken"},{"content":"Due to a configuration fault in the Science radius server, many connections to Eduroam for users with a science account failed. It took two days of joint investigation by ISC and C\u0026amp;CZ to resolve this problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1243/","summary":"\u003cp\u003eDue to a configuration fault in the Science radius server, many\nconnections to Eduroam for users with a science account failed. It took\ntwo days of joint investigation by ISC and C\u0026amp;CZ to resolve this problem.\u003c/p\u003e","title":"No connections to Eduroam with science accounts"},{"content":"Information security European directives and Dutch law prohibit the storage of personal data (persoonsgegevens) outside the European Economic Area (EEA). Most of the well known cloud services are US based: Dropbox, all Google services such as Gmail and Google+, Hotmail, iCloud. This implies that (data collections containing) personal data may not be stored on these cloud services. In addition to the law, Radboud University has issued an internal security policy that prohibits the storage of data that is classified as critical (this includes all personal data) on any (public) cloud service, even those which are EEA based. However, RU considers SURFnet’s SURFdrive, SURFfilesender and edugroepen as safe community cloud services for data exchange between RU employees, students, and external parties.\nIn addition to this, it is advised to consider whether you trust the cloud provider well enough to handle your data. Take into account the possible problems which may arise when the service is discontinued or taken over by a third party, when the service is hacked or forced by law to provide data to a (local) authority. Moreover one can never be sure about the goals a provider may have with your data.\nThe RU information security policy and data classification methodology are available online (in Dutch only).\n","permalink":"https://cncz.science.ru.nl/howto/informatiebeveiliging/","summary":"\u003ch2 id=\"information-security\"\u003eInformation security\u003c/h2\u003e\n\u003cp\u003eEuropean directives and Dutch law prohibit the storage of personal data\n(persoonsgegevens) outside the \u003ca href=\"http://en.wikipedia.org/wiki/European_Economic_Area\" target=\"_blank\"\u003eEuropean Economic\nArea\u003c/a\u003e (EEA). Most\nof the well known cloud services are US based: Dropbox, all Google\nservices such as Gmail and Google+, Hotmail, iCloud. This implies that\n(data collections containing) personal data may not be stored on these\ncloud services. In addition to the law, Radboud University has issued an\ninternal security policy that prohibits the storage of data that is\nclassified as critical (this includes all personal data) on any (public)\ncloud service, even those which are EEA based. However, RU considers\nSURFnet’s \u003ca href=\"https://www.surfdrive.nl/en\" target=\"_blank\"\u003eSURFdrive\u003c/a\u003e,\n\u003ca href=\"https://www.surffilesender.nl/en\" target=\"_blank\"\u003eSURFfilesender\u003c/a\u003e and\n\u003ca href=\"https://www.edugroepen.nl/\" target=\"_blank\"\u003eedugroepen\u003c/a\u003e as safe community cloud\nservices for data exchange between RU employees, students, and external\nparties.\u003c/p\u003e","title":"Informatiebeveiliging"},{"content":"On December 10, the support for the security protocol TLS v1 and v1.1 was discontinued within the Radboud Eduroam wireless network. From that moment on, all wireless clients such as laptops, smartphones, tablets and the like must use TLS version 1.2 or higher.\nUnfortunately, the outcome of this change was not as expected. After the change, there were more clients with connection problems than the number of clients using TLSv1. After a period of testing and research, the ISC decided around 12.00 to reverse the change.\nAlthough the underlying reasons are still valid, the termination of TLSv1 support has been suspended for the time being. In consultation with SURF it will be decided in the coming period what caused the problems of the different clients.\n","permalink":"https://cncz.science.ru.nl/cpk/1242/","summary":"\u003cp\u003eOn December 10, the support for the security protocol TLS v1 and v1.1\nwas discontinued within the Radboud Eduroam wireless network. From that\nmoment on, all wireless clients such as laptops, smartphones, tablets\nand the like must use TLS version 1.2 or higher.\u003c/p\u003e\n\u003cp\u003eUnfortunately, the outcome of this change was not as expected. After the\nchange, there were more clients with connection problems than the number\nof clients using TLSv1. After a period of testing and research, the ISC\ndecided around 12.00 to reverse the change.\u003c/p\u003e","title":"No Eduroam end for deprecated systems (Windows XP, Android 4.1, ...)"},{"content":"ProQuota, what does it do ? When you log in on a managed PC, your private settings (Profile) of Windows and the applications are copied from the network to your current PC. During the session, these copied settings on the PC are used and changed if necessary. At logout, the (altered) settings are copied back to the network. When you log in, at a later point in time, on a different managed PC, these settings are copied to the new PC and your own settings are available again. You may locate these settings under C:\\Documents and Settings\\\u0026lt;loginname\u0026gt;.\nProQuota monitors the space that your Profile takes on the disk. Bacause copying the Profile takes time during login and logout, and because the physical disk space is limited, the amount of disk space for Profile is limited.\nBe aware that backup software discriminates between Home directories (important) and other data. Store, therefore, your important data in your Home directory.\nWhat can you do in case you receive a Proquota message:\nFor Firefox and Thunderbird it would be smart to save your user profile somewhere under ‘My Documents’ (= home directory = U:\\ drive). Store your documents in your Home directory and not on your desktop. ","permalink":"https://cncz.science.ru.nl/howto/proquota/","summary":"\u003ch2 id=\"proquota-what-does-it-do-\"\u003eProQuota, what does it do ?\u003c/h2\u003e\n\u003cp\u003eWhen you log in on a managed PC, your private settings (\u003cem\u003eProfile\u003c/em\u003e) of\nWindows and the applications are copied from the network to your current\nPC. During the session, these copied settings on the PC are used and\nchanged if necessary. At logout, the (altered) settings are copied back\nto the network. When you log in, at a later point in time, on a\ndifferent managed PC, these settings are copied to the new PC and your\nown settings are available again. You may locate these settings under\n\u003ccode\u003eC:\\Documents and Settings\\\u0026lt;loginname\u0026gt;\u003c/code\u003e.\u003c/p\u003e","title":"Proquota"},{"content":"A configuration change was automatically put into production Tuesday morning which had been prepared the previous day on Ubuntu 14_04 LTS, Ubuntu 16_04 LTS and Ubuntu 18_04 LTS in order to increase the level of security of SSH connections within FNWI. The change had the side effect of crashing the SSH daemon on Ubuntu 12_04 LTS and preventing older SSH clients from connecting at all. Users are encouraged to update their SSH clients so that we can gradually increase the level of security again.\n","permalink":"https://cncz.science.ru.nl/cpk/1240/","summary":"\u003cp\u003eA configuration change was automatically put into production Tuesday\nmorning which had been prepared the previous day on Ubuntu 14_04 LTS,\nUbuntu 16_04 LTS and Ubuntu 18_04 LTS in order to increase the level\nof security of SSH connections within FNWI. The change had the side\neffect of crashing the SSH daemon on Ubuntu 12_04 LTS and preventing\nolder SSH clients from connecting at all. Users are encouraged to update\ntheir SSH clients so that we can \u003ca href=\"https://wiki.mozilla.org/Security/Guidelines/OpenSSH\" target=\"_blank\"\u003egradually increase the level of\nsecurity\u003c/a\u003e again.\u003c/p\u003e","title":"SSH connections of older clients/servers"},{"content":"One of the data-disks has a currupted file system. During the time slot menioned above, the server was unavailable. At the moment the server is running without the defective disk (milkun16). At the moment, we are trying to fix the disk.\n","permalink":"https://cncz.science.ru.nl/cpk/1241/","summary":"\u003cp\u003eOne of the data-disks has a currupted file system. During the time slot\nmenioned above, the server was unavailable. At the moment the server is\nrunning without the defective disk (milkun16). At the moment, we are\ntrying to fix the disk.\u003c/p\u003e","title":"Disk problem milton fileserver"},{"content":"Last night the host for a number of vm’s (oscar) broke down. By using a replacement server (joule) this problem has been temporarily resolved. Tomorrow the machine will be repaired ans we will determine when the machines will be switched back.\n","permalink":"https://cncz.science.ru.nl/cpk/1239/","summary":"\u003cp\u003eLast night the host for a number of vm’s (oscar) broke down. By using a\nreplacement server (joule) this problem has been temporarily resolved.\nTomorrow the machine will be repaired ans we will determine when the\nmachines will be switched back.\u003c/p\u003e","title":"Host hardware of virtual machines broken"},{"content":"While testing a possible update to the IMAP mailserver, an error made the mailserver unavailable for ca. fifteen minutes.\n","permalink":"https://cncz.science.ru.nl/cpk/1237/","summary":"\u003cp\u003eWhile testing a possible update to the IMAP mailserver, an error made\nthe mailserver unavailable for ca. fifteen minutes.\u003c/p\u003e","title":"Network problem IMAP-mailserver because of error during update"},{"content":"The new version of the IMAP mailserver software contained a bug in the handling of SSL connections, that led to connections being dropped and depending on the mailclient led to a mailserver that could hardly be used. This morning a patch for this bug has been installed.\n","permalink":"https://cncz.science.ru.nl/cpk/1238/","summary":"\u003cp\u003eThe new version of the IMAP mailserver software contained a bug in the\nhandling of SSL connections, that led to connections being dropped and\ndepending on the mailclient led to a mailserver that could hardly be\nused. This morning a patch for this bug has been installed.\u003c/p\u003e","title":"Bug in new IMAP mailserver resolved"},{"content":"The IMAP mailserver post.science.ru.nl is being replaced by a new server. Therefore connections to the IMAP mailserver post.science.ru.nl will not be possible during ca. 5 minutes.\n","permalink":"https://cncz.science.ru.nl/cpk/1236/","summary":"\u003cp\u003eThe IMAP mailserver post.science.ru.nl is being replaced by a new\nserver. Therefore connections to the IMAP mailserver post.science.ru.nl\nwill not be possible during ca. 5 minutes.\u003c/p\u003e","title":"Upgrade IMAP mailserver post.science.ru.nl: Thursday August 9 2018 13:00-13:05"},{"content":"Three of our main fileservers need firmware updates, this requires the servers to be rebooted several times. The shares will be unavailable for at most one hour.\nAffected network disks:\n45t acfiles acfiles2 acl-ru-nl$ acs4 aerochem afstudeertest afstudeerwerk akolkmandata albert amsbackup amscommon animal arb astropresentie avd bbb-priv beevee betadidactiek b-fac-backup bioalg bioexamencie bioexamencierw bioniccell bio-orgchem birds bko boltje botany-general carisma carta ccs4 ccz cczhelpdesk cczsecr cdalgemeen cdbiow cdisis cdoii cdomw cdwinst celbio1 celbio2 celbio2 celbio3 ces2017 chemprac chemstaff cncz coastoffon cudotest cursus cursusdossiers dbiwwr-ro dbiwwr-rw dcnadmin desda diafragma docent docenten ds ecogen ecologie ehef1 ehef2 ehef3 ehef4 embdata epsylon erhvedata evsf2data10 evsf2data15 evsf2data16 evsf2data17 evsf2data18 evsf2data19 evsf2data7 evsf2data8 evsf2data9 evsf2schijf1 exoarchief femtospin fsr geminstr geminstr2 gi1 gi2 gi3 giphouse gipsy gissig global global global gmi goudsmit1 goudsmit2 goudsmit3 goudsmit4 goudsmitoldusers grafting hfml-backup hfml-backup2 hfml-backup3 hfml-backup4 hfml-backup-inst hfml-data hfml-engineering hfml-secr highres honours huckgroup hybrids icis icisafstudeer icisbureau iciscop icislaquso icissec icisst ifl ifl-d1 IJSO imappdir imappsecr immbureau immstaff impuls introcie invbio iris isis isptinspec itt iwwr1 janvanhest kaartenbak kangoeroe khaj kolkteaching labservant lambiek leonardo licenses liquidhelium liquids mailmanincludes marcurkasco master mathematica mathsolcie mbaudit1 mbaudit2 mbaudit3 mbaudit4 mbaudit5 mbbioel mbbioel2 mbcortex mbonderwijs mbread mbscon mbsl mbwrite mercator mestrelab mi1 mi2 mi3 micord micro-bulk1 micro-bulk2 micro-labmembers mlf90 mlf90grp mlf90linac mlfalgemeen mlfsec molbiol molchem molchem2 molchem3 molneuro molphtec mol-secr morph mpcoldmol2 mpcoldmollab mpcoldsecr mppstaf multimedia mwstudiereis neuroinf neuroinf2 neuropi nmr500data nmrspectra olcbiocie olcbiow olccudo olcii-archief olympus onderwijskwalificatiedossiers onlyme ons orgdier orgdiermac owc owc1 parp pcb plantkunde-hgl poliepC poliepD pracnat practica project1mpp puc randomwalkmodel rotax ruversatest secrmolbiol secrthch share sigma sigmacies smol snn snn2 snn3 snn4 sofie software soheto solids sos spectra spectra-rw spibdossier spm spmdata1 spmdata3 spmdata4 spmdata5 spmdata6 spmdata7 spmmagstm spmnanolab spmstaff ssi ssiguest staff-hfml stroom studiereis2013 synorgchem tece teceleiding template-ru-nl$ template-ru-nl$ template-ru-nl$ tf2devices thalia thaliacies thchem tracegas tracegastemp tzacad ucm unl vcbio_prive vergader vsc vsc1 vsc10 vsc11 vsc12 vsc13 vsc14 vsc15 vsc16 vsc2 vsc3 vsc4 vsc5 vsc6 vsc7 vsc8 vsc9 vscadmin vscxray wallpaper wikis wiskalg wiskunde wiskundetoernooi wkru zeegras\n","permalink":"https://cncz.science.ru.nl/cpk/1235/","summary":"\u003cp\u003eThree of our main fileservers need firmware updates, this requires the\nservers to be rebooted several times. The shares will be unavailable for\nat most one hour.\u003c/p\u003e\n\u003cp\u003eAffected network disks:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003e45t acfiles acfiles2 acl-ru-nl$ acs4 aerochem afstudeertest afstudeerwerk akolkmandata albert amsbackup amscommon\u003c/code\u003e\n\u003ccode\u003eanimal arb astropresentie avd bbb-priv beevee betadidactiek b-fac-backup bioalg bioexamencie bioexamencierw bioniccell\u003c/code\u003e\n\u003ccode\u003ebio-orgchem birds bko boltje botany-general carisma carta ccs4 ccz cczhelpdesk cczsecr cdalgemeen cdbiow cdisis cdoii\u003c/code\u003e\n\u003ccode\u003ecdomw cdwinst celbio1 celbio2 celbio2 celbio3 ces2017 chemprac chemstaff cncz coastoffon cudotest cursus cursusdossiers\u003c/code\u003e\n\u003ccode\u003edbiwwr-ro dbiwwr-rw dcnadmin desda diafragma docent docenten ds ecogen ecologie ehef1 ehef2 ehef3 ehef4 embdata epsylon\u003c/code\u003e\n\u003ccode\u003eerhvedata evsf2data10 evsf2data15 evsf2data16 evsf2data17 evsf2data18 evsf2data19 evsf2data7 evsf2data8 evsf2data9\u003c/code\u003e\n\u003ccode\u003eevsf2schijf1 exoarchief femtospin fsr geminstr geminstr2 gi1 gi2 gi3 giphouse gipsy gissig global global global\u003c/code\u003e\n\u003ccode\u003egmi goudsmit1 goudsmit2 goudsmit3 goudsmit4 goudsmitoldusers grafting hfml-backup hfml-backup2 hfml-backup3 hfml-backup4\u003c/code\u003e\n\u003ccode\u003ehfml-backup-inst hfml-data hfml-engineering hfml-secr highres honours huckgroup hybrids icis icisafstudeer icisbureau\u003c/code\u003e\n\u003ccode\u003eiciscop icislaquso icissec icisst ifl ifl-d1 IJSO imappdir imappsecr immbureau immstaff impuls introcie invbio iris isis\u003c/code\u003e\n\u003ccode\u003eisptinspec itt iwwr1 janvanhest kaartenbak kangoeroe khaj kolkteaching labservant lambiek leonardo licenses liquidhelium\u003c/code\u003e\n\u003ccode\u003eliquids mailmanincludes marcurkasco master mathematica mathsolcie mbaudit1 mbaudit2 mbaudit3 mbaudit4 mbaudit5 mbbioel\u003c/code\u003e\n\u003ccode\u003embbioel2 mbcortex mbonderwijs mbread mbscon mbsl mbwrite mercator mestrelab mi1 mi2 mi3 micord micro-bulk1 micro-bulk2\u003c/code\u003e\n\u003ccode\u003emicro-labmembers mlf90 mlf90grp mlf90linac mlfalgemeen mlfsec molbiol molchem molchem2 molchem3 molneuro molphtec mol-secr\u003c/code\u003e\n\u003ccode\u003emorph mpcoldmol2 mpcoldmollab mpcoldsecr mppstaf multimedia mwstudiereis neuroinf neuroinf2 neuropi nmr500data nmrspectra\u003c/code\u003e\n\u003ccode\u003eolcbiocie olcbiow olccudo olcii-archief olympus onderwijskwalificatiedossiers onlyme ons orgdier orgdiermac owc owc1 parp\u003c/code\u003e\n\u003ccode\u003epcb plantkunde-hgl poliepC poliepD pracnat practica project1mpp puc randomwalkmodel rotax ruversatest secrmolbiol secrthch\u003c/code\u003e\n\u003ccode\u003eshare sigma sigmacies smol snn snn2 snn3 snn4 sofie software soheto solids sos spectra spectra-rw spibdossier spm spmdata1\u003c/code\u003e\n\u003ccode\u003espmdata3 spmdata4 spmdata5 spmdata6 spmdata7 spmmagstm spmnanolab spmstaff ssi ssiguest staff-hfml stroom studiereis2013\u003c/code\u003e\n\u003ccode\u003esynorgchem tece teceleiding template-ru-nl$ template-ru-nl$ template-ru-nl$ tf2devices thalia thaliacies thchem tracegas\u003c/code\u003e\n\u003ccode\u003etracegastemp tzacad ucm unl vcbio_prive vergader vsc vsc1 vsc10 vsc11 vsc12 vsc13 vsc14 vsc15 vsc16 vsc2 vsc3 vsc4 vsc5\u003c/code\u003e\n\u003ccode\u003evsc6 vsc7 vsc8 vsc9 vscadmin vscxray wallpaper wikis wiskalg wiskunde wiskundetoernooi wkru zeegras\u003c/code\u003e\u003c/p\u003e","title":"Server maintenance shares: Friday 3rd of August 2018 12:00-13:00"},{"content":"Monday evening July 2, there will be maintenance on central RU network equipment. From 22:00 hours, central RU applications and network will not be available most of the time. For telephones no disturbance is expected. For the C\u0026amp;CZ services there is a possibility of disruptions: no Internet connection for some time. Please think which processes depend on connectivity to RU central services and prepare for this possible outage if necessary. Future maintenance windows can be seen on the ISC website.\n","permalink":"https://cncz.science.ru.nl/cpk/1234/","summary":"\u003cp\u003eMonday evening July 2, there will be maintenance on central RU network\nequipment. From 22:00 hours, central RU applications and network will\nnot be available most of the time. For telephones no disturbance is\nexpected. For the C\u0026amp;CZ services there is a possibility of disruptions:\nno Internet connection for some time. Please think which processes\ndepend on connectivity to RU central services and prepare for this\npossible outage if necessary. Future maintenance windows can be seen on\nthe \u003ca href=\"http://www.ru.nl/systeem-meldingen/\" target=\"_blank\"\u003eISC website\u003c/a\u003e.\u003c/p\u003e","title":"RU network maintenance: Monday evening/night July 2 to 3 from 22:00 hours"},{"content":"Sieve If one wants incoming mail to be sorted into folders automatically or to be filtered in some special way, one can use “Sieve” if one has the IMAP-server post.science.ru.nl as incoming mailserver.\nTo put the sieve script on the mail server and activate it, use a mail program which supports sieve. The filter settings can be managed quite easily in Roundcube webmail with Settings -\u0026gt; Filters. It is also possible with e.g. KMail or Thunderbird with the sieve addon.\nOn lilo4 you get with the command sieve-connect postvak.science.ru.nl an interactive commandline where you can use the command put to upload a sieve script.\nThe Sieve language is described in RFC3028.\nUsing Sieve in KMail After adding an account via the KMail’s wizard (with settings found on :Categorie:Email), KMail must be told that the server supports Sieve. You can do this via Settings, Configure KMail, Accounts, Modify, Filtering, Server supports Sieve. After that, Sieve scripts kan be accessed via Settings, Manage Sieve Scripts.\nExamples of Sieve-scripts If some mail should be sorted automatically into an existing folder, one can use a script like: require [ \u0026quot;fileinto\u0026quot;, \u0026quot;include\u0026quot; ];\n#\n# Messages into folders.\n#\nif header :contains \u0026quot;X-VirusscanResult\u0026quot; \u0026quot;infected\u0026quot; {\nfileinto \u0026quot;INBOX.Virus\u0026quot;;\nstop;\n}\nif address :is [\u0026quot;From\u0026quot;, \u0026quot;To\u0026quot;] [\n\u0026quot;Symposium2008@science.ru.nl\u0026quot;,\n\u0026quot;New-symposium2008@science.ru.nl\u0026quot;\n]\n{\nfileinto \u0026quot;INBOX.Symposium2008\u0026quot;;\nstop;\n}\ninclude \u0026quot;spam\u0026quot;;\ninclude \u0026quot;vacation\u0026quot;;\nIf one wants to redirect all mail that remains after our spamfilter has done its job, one has to add after the include \u0026quot;spam\u0026quot;; line:\nredirect \u0026quot;field@example.edu\u0026quot;;\n","permalink":"https://cncz.science.ru.nl/howto/email-sieve/","summary":"\u003ch2 id=\"sieve\"\u003eSieve\u003c/h2\u003e\n\u003cp\u003eIf one wants incoming mail to be sorted into folders automatically or to\nbe filtered in some special way, one can use “Sieve” if one has the\nIMAP-server \u003ccode\u003epost.science.ru.nl\u003c/code\u003e as incoming mailserver.\u003cbr\u003e\nTo put the sieve script on the mail server and activate it, use a mail\nprogram which supports sieve. The filter settings can be managed quite\neasily in \u003ca href=\"http://roundcube.science.ru.nl\" target=\"_blank\"\u003eRoundcube webmail\u003c/a\u003e with\nSettings -\u0026gt; Filters. It is also possible with e.g. KMail or Thunderbird\nwith the \u003ca href=\"http://sieve.mozdev.org/\" target=\"_blank\"\u003esieve addon\u003c/a\u003e.\u003cbr\u003e\nOn lilo4 you get with the command \u003ccode\u003esieve-connect postvak.science.ru.nl\u003c/code\u003e\nan interactive commandline where you can use the command \u003cem\u003eput\u003c/em\u003e to upload\na sieve script.\u003cbr\u003e\nThe Sieve language is described in\n\u003ca href=\"http://www.ietf.org/rfc/rfc3028.txt?number=3028\" target=\"_blank\"\u003eRFC3028\u003c/a\u003e.\u003c/p\u003e","title":"Email sieve"},{"content":"Saturday june 9th from 8:00h until approximately 12:00h analog telephone communications via AudioCodes will not be possible. At this time the existing equipment used in the Huygens- and surrounding buildings will be moved and reconnected. Only traditional analog equipment such as DECT phones and such are connected to the AudioCodes. The green (emergency) phones are not connected to these AudioCodes but to the emergency telephone exchange.\nThe emergency telephone exchange wil go down for ten minutes during the afternoon due to an intteruption of the power supply. The bulk (if not all) of the emergency phones and elevators are connected to this emergency telephone exchange and will therefore not be operational at that time.\n","permalink":"https://cncz.science.ru.nl/cpk/1233/","summary":"\u003cp\u003eSaturday june 9th from 8:00h until approximately 12:00h analog telephone\ncommunications via AudioCodes will not be possible. At this time the\nexisting equipment used in the Huygens- and surrounding buildings will\nbe moved and reconnected. Only traditional analog equipment such as DECT\nphones and such are connected to the AudioCodes. The green (emergency)\nphones are not connected to these AudioCodes but to the emergency\ntelephone exchange.\u003c/p\u003e\n\u003cp\u003eThe emergency telephone exchange wil go down for ten minutes during the\nafternoon due to an intteruption of the power supply. The bulk (if not\nall) of the emergency phones and elevators are connected to this\nemergency telephone exchange and will therefore not be operational at\nthat time.\u003c/p\u003e","title":"Interruption of parts of the telephone service"},{"content":"Saturday June 9th from 8:00h until approximately 12:00h analog telephone communications via AudioCodes will not be possible at FNWI. At that time the existing equipment used in the Huygens and surrounding buildings will be moved and reconnected. Only traditional analog equipment such as DECT phones are connected to the AudioCodes. The green emergency phones are not connected to these AudioCodes but to the emergency telephone exchange.\nThe emergency telephone exchange wil go down for ten minutes during the afternoon of that day due to an interruption of the power supply. The bulk (if not all) of the emergency phones and elevators are connected to this emergency telephone exchange and will therefore not be operational during those ten minutes.\n","permalink":"https://cncz.science.ru.nl/cpk/1231/","summary":"\u003cp\u003eSaturday June 9th from 8:00h until approximately 12:00h analog telephone\ncommunications via AudioCodes will not be possible at FNWI. At that time\nthe existing equipment used in the Huygens and surrounding buildings\nwill be moved and reconnected. Only traditional analog equipment such as\nDECT phones are connected to the AudioCodes. The green emergency phones\nare not connected to these AudioCodes but to the emergency telephone\nexchange.\u003c/p\u003e\n\u003cp\u003eThe emergency telephone exchange wil go down for ten minutes during the\nafternoon of that day due to an interruption of the power supply. The\nbulk (if not all) of the emergency phones and elevators are connected to\nthis emergency telephone exchange and will therefore not be operational\nduring those ten minutes.\u003c/p\u003e","title":"No analog telephone communications on Saturday June 9"},{"content":"Last week, the DHCP infrastructure at FNWI was changed, in order to move from old to new servers. An error was made when we had to move back because DHCP did not run well on a virtual interface. When the first complaints came in this morning, we quickly found and repaired the error. We try to avoid further service disruptions while improving the DHCP service.\n","permalink":"https://cncz.science.ru.nl/cpk/1232/","summary":"\u003cp\u003eLast week, the DHCP infrastructure at FNWI was changed, in order to move\nfrom old to new servers. An error was made when we had to move back\nbecause DHCP did not run well on a virtual interface. When the first\ncomplaints came in this morning, we quickly found and repaired the\nerror. We try to avoid further service disruptions while improving the\nDHCP service.\u003c/p\u003e","title":"No Internet (DHCP problem for leased addresses)"},{"content":"Last week, the DNS infrastructure at FNWI was changed, in order to move from old to new servers and to prepare for the use of DNSSEC. A workaround for the internal/external view of ru.nl had an unwanted side effect. This made the FNWI DNS servers lose the info about ru.nl. We had to resort to a different workaround to fix this. We try to avoid further service disruptions while improving the DNS services.\n","permalink":"https://cncz.science.ru.nl/cpk/1230/","summary":"\u003cp\u003eLast week, the DNS infrastructure at FNWI was changed, in order to move\nfrom old to new servers and to prepare for the use of DNSSEC. A\nworkaround for the internal/external view of ru.nl had an unwanted side\neffect. This made the FNWI DNS servers lose the info about ru.nl. We had\nto resort to a different workaround to fix this. We try to avoid further\nservice disruptions while improving the DNS services.\u003c/p\u003e","title":"FNWI DNS nameserver problem with ru.nl"},{"content":"Backups were incomplete since March 17th. The tape robot couldn’t be used because a tapedrive failed, probably due to dry weather conditions. Therefore holding disks filled up. Only the backup of Tuesday upon Wednesday is possibly complete, but we lack backups of March 21st and 22nd, which is caused by a filesystem inconsistency of the holding disks, repairs already take two days. We’re trying hard to make backups this weekend, but please be cautious with your files, since restores of recently changed files might fail.\n","permalink":"https://cncz.science.ru.nl/cpk/1229/","summary":"\u003cp\u003eBackups were incomplete since March 17th. The tape robot couldn’t be\nused because a tapedrive failed, probably due to dry weather conditions.\nTherefore holding disks filled up. Only the backup of Tuesday upon\nWednesday is possibly complete, but we lack backups of March 21st and\n22nd, which is caused by a filesystem inconsistency of the holding\ndisks, repairs already take two days. We’re trying hard to make backups\nthis weekend, but please be cautious with your files, since restores of\nrecently changed files might fail.\u003c/p\u003e","title":"Multiple backup server issues"},{"content":"During the process of restoring the homedirectory of the affected user of the ransomware, the samba server was restarted, however it stopped, but not start. This was noticed only 45 minutes later. We have ajusted our monitoring to help us notice this more quickly.\n","permalink":"https://cncz.science.ru.nl/cpk/1228/","summary":"\u003cp\u003eDuring the process of restoring the homedirectory of the affected user\nof the ransomware, the samba server was restarted, however it stopped,\nbut not start. This was noticed only 45 minutes later. We have ajusted\nour monitoring to help us notice this more quickly.\u003c/p\u003e","title":"Homedirectories onbereikbaar op windows"},{"content":"Due to an accidental opening of an e-mail attachment (called Resume.doc), which contained a macro-based ransomware, all the files and directories on the mentioned shares were either removed or encrypted and a message was left on the infected computer to contact a certain URL to get the files back. The files were restored from backup and the PC wiped clean and re-installed. NB. The f-secure software did not recognise this malware yet at the time.\n","permalink":"https://cncz.science.ru.nl/cpk/1227/","summary":"\u003cp\u003eDue to an accidental opening of an e-mail attachment (called\nResume.doc), which contained a macro-based ransomware, all the files and\ndirectories on the mentioned shares were either removed or encrypted and\na message was left on the infected computer to contact a certain URL to\nget the files back. The files were restored from backup and the PC wiped\nclean and re-installed. NB. The f-secure software did not recognise this\nmalware yet at the time.\u003c/p\u003e","title":"Gijzelsoftwware op IMAPP mappen"},{"content":"Yesterday morning, we got an alarm because the smtp service did not work properly. The cause was found to be that from various PCs from, among other countries, China, connections were built up with one of the smtp servers, without actually sending an e-mail, as a result of which all these connections were left hanging. If the number of standing connections became too high, the server became unusable for others. This service has to be be accessible from the Internet, because of authenticated SMTP. After a few PCs had been blocked, at 15:39 Fail2ban was turned on, that is also used to protect other services accessible from the Internet, such as mailservers, Linux loginservers, WWW-servers and GitLab servers.\n","permalink":"https://cncz.science.ru.nl/cpk/1226/","summary":"\u003cp\u003eYesterday morning, we got an alarm because the smtp service did not work\nproperly. The cause was found to be that from various PCs from, among\nother countries, China, connections were built up with one of the smtp\nservers, without actually sending an e-mail, as a result of which all\nthese connections were left hanging. If the number of standing\nconnections became too high, the server became unusable for others. This\nservice has to be be accessible from the Internet, because of\n\u003ca href=\"/howto/email#outgoing-email\"\u003eauthenticated SMTP\u003c/a\u003e. After a few PCs had been\nblocked, at 15:39 \u003ca href=\"https://www.fail2ban.org\" target=\"_blank\"\u003eFail2ban\u003c/a\u003e was turned on,\nthat is also used to protect other services accessible from the\nInternet, such as \u003ca href=\"/howto/hardware-servers/\"\u003emailservers\u003c/a\u003e, \u003ca href=\"/howto/hardware-servers/\"\u003eLinux\nloginservers\u003c/a\u003e,\n\u003ca href=\"/howto/hardware-servers/\"\u003eWWW-servers\u003c/a\u003e and \u003ca href=\"/howto/hardware-servers/\"\u003eGitLab\nservers\u003c/a\u003e.\u003c/p\u003e","title":"Problem with outgoing mailserver (smtp)"},{"content":"This morning the fileserver reported a disc problem. To diagnose this, we have to upgrade the firmware, which makes downtime necessary. We planned this for next Monday morning because of the Next Business Day support contract. Sorry for any inconvenience.\nAffected disks:\nacfiles aerochem amsbackup amscommon animal astropresentie avance500 avance600 beevee b-fac-backup bioniccell bio-orgchem boltje carisma celbio1 celbio2 chemprac cncz coastoffon csgi-archief desda ds ehef1 ehef2 ehef3 ehef4 femtospin geminstr2 giphouse gissig global gmi goudsmit1 hfml-backup hfml-backup2 hfml-backup3 hfml-backup-inst highres imappdir imappsecr impuls introcie isis janvanhest kaartenbak kangoeroe khaj linova500 linova800 marcurkasco mathsolcie mbaudit1 mbscon mbsl molbiol mwstudiereis neuroinf neuroinf2 nfstest olympus puc randomwalkmodel ruversatest secres2 secrmolbiol sigma sigmacies spectra spectra-rw spm spmdata3 spmdata4 spmdata5 spmdata6 spmdata7 spmmagstm spmnanolab spmstaff ssi ssiguest staff-hfml stroom thalia thaliacies ucm vsc vsc1 vsc10 vsc11 vsc12 vsc13 vsc14 vsc15 vsc2 vsc3 vsc4 vsc5 vsc6 vsc7 vsc8 vsc9 vscadmin wiskalg wiskunde wkru\n","permalink":"https://cncz.science.ru.nl/cpk/1225/","summary":"\u003cp\u003eThis morning the fileserver reported a disc problem. To diagnose this,\nwe have to upgrade the firmware, which makes downtime necessary. We\nplanned this for next Monday morning because of the Next Business Day\nsupport contract. Sorry for any inconvenience.\u003c/p\u003e\n\u003cp\u003eAffected disks:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eacfiles aerochem amsbackup amscommon animal astropresentie avance500\u003c/code\u003e\n\u003ccode\u003eavance600 beevee b-fac-backup bioniccell bio-orgchem boltje carisma\u003c/code\u003e\n\u003ccode\u003ecelbio1 celbio2 chemprac cncz coastoffon csgi-archief desda ds ehef1\u003c/code\u003e\n\u003ccode\u003eehef2 ehef3 ehef4 femtospin geminstr2 giphouse gissig global gmi goudsmit1\u003c/code\u003e\n\u003ccode\u003ehfml-backup hfml-backup2 hfml-backup3 hfml-backup-inst highres imappdir\u003c/code\u003e\n\u003ccode\u003eimappsecr impuls introcie isis janvanhest kaartenbak kangoeroe khaj\u003c/code\u003e\n\u003ccode\u003elinova500 linova800 marcurkasco mathsolcie mbaudit1 mbscon mbsl molbiol\u003c/code\u003e\n\u003ccode\u003emwstudiereis neuroinf neuroinf2 nfstest olympus puc randomwalkmodel\u003c/code\u003e\n\u003ccode\u003eruversatest secres2 secrmolbiol sigma sigmacies spectra spectra-rw\u003c/code\u003e\n\u003ccode\u003espm spmdata3 spmdata4 spmdata5 spmdata6 spmdata7 spmmagstm spmnanolab\u003c/code\u003e\n\u003ccode\u003espmstaff ssi ssiguest staff-hfml stroom thalia thaliacies ucm vsc vsc1\u003c/code\u003e\n\u003ccode\u003evsc10 vsc11 vsc12 vsc13 vsc14 vsc15 vsc2 vsc3 vsc4 vsc5 vsc6 vsc7 vsc8\u003c/code\u003e\n\u003ccode\u003evsc9 vscadmin wiskalg wiskunde wkru\u003c/code\u003e\u003c/p\u003e","title":"Fileserver maintenance because of reported disc problem"},{"content":"Because of a planned upgrade, gitlab.science.ru.nl and gitlab.pep.cs.ru.nl will not be available. See also: 1\n","permalink":"https://cncz.science.ru.nl/cpk/1224/","summary":"\u003cp\u003eBecause of a planned upgrade, gitlab.science.ru.nl and\ngitlab.pep.cs.ru.nl will not be available. See also:\n\u003ca href=\"https://about.gitlab.com/2018/01/12/gitlab-critical-release-preannouncement/\" target=\"_blank\"\u003e1\u003c/a\u003e\u003c/p\u003e","title":"GitLab temporarily unavailable during upgrade"},{"content":"Most licensed software that can be freely used by students and staff of the Science faculty can be found in the install network share.\nYou can connect the install share in MS Windows using the path:\n\\\\install-srv.science.ru.nl\\install Info\nConsult this page on how to connect to a network share.\nIt is often possible to install this software directly from the install share. Usually a license key is needed. Install info and licenses can be found on the Science licenses pages. If you need more info, please contact postmaster.\nEvery software package has its own license requirements. Sometimes it can only be used on university owned computers, sometimes it can even be used by students at home.\n","permalink":"https://cncz.science.ru.nl/howto/install-share/","summary":"\u003cp\u003eMost licensed software that can be freely used by students and staff of the Science faculty can be found in the \u003ccode\u003einstall\u003c/code\u003e network share.\u003c/p\u003e\n\u003cp\u003eYou can connect the install share in MS Windows using the path:\u003c/p\u003e\n\u003cpre tabindex=\"0\"\u003e\u003ccode\u003e\\\\install-srv.science.ru.nl\\install\n\u003c/code\u003e\u003c/pre\u003e\u003cdiv class=\"notice info\" \u003e\n\u003cp class=\"first notice-title\"\u003e\u003cspan class=\"icon-notice baseline\"\u003e\u003csvg\u003e\u003cuse href=\"#info-notice\"\u003e\u003c/use\u003e\u003c/svg\u003e\u003c/span\u003eInfo\u003c/p\u003e\u003cp\u003eConsult \u003ca href=\"../storage/#network-share-paths\"\u003ethis page\u003c/a\u003e on how to connect to a network share.\u003c/p\u003e\u003c/div\u003e\n\n\u003cp\u003eIt is often possible to install this software directly from the install\nshare. Usually a license key is needed. Install info and licenses\ncan be found on the \u003ca href=\"https://cncz.pages.science.ru.nl/licenses/\" target=\"_blank\"\u003eScience licenses pages\u003c/a\u003e. If you need more info, please contact\n\u003ca href=\"../contact\"\u003epostmaster\u003c/a\u003e.\u003c/p\u003e","title":"Install share"},{"content":"The new certificate for the IMAP mailserver hadn’t been put into place correctly. Sorry for any inconvenience.\n","permalink":"https://cncz.science.ru.nl/cpk/1223/","summary":"\u003cp\u003eThe new certificate for the IMAP mailserver hadn’t been put into place\ncorrectly. Sorry for any inconvenience.\u003c/p\u003e","title":"Expired certificate for IMAP mailserver"},{"content":"We placed an incorrectly packaged version on the install drive. After users reported this, the ISC has created a new package and we have replaced it.\n","permalink":"https://cncz.science.ru.nl/cpk/1222/","summary":"\u003cp\u003eWe placed an incorrectly packaged version on the install drive. After\nusers reported this, the ISC has created a new package and we have\nreplaced it.\u003c/p\u003e","title":"Incorrect Adobe Acrobat Pro DC package on install disc"},{"content":"New firmware will be loaded into the Heyendaal-East distribution router. During this period the wired and wireless network will be unavailable for approx. 30 minutes.\n","permalink":"https://cncz.science.ru.nl/cpk/1220/","summary":"\u003cp\u003eNew firmware will be loaded into the Heyendaal-East distribution router.\nDuring this period the wired and wireless network will be unavailable\nfor approx. 30 minutes.\u003c/p\u003e","title":"Network maintenance at Science Faculty: upgrade router"},{"content":"After an update of the samba software, it appears that the smbd service didn’t start up again. The problem was resolved by either rebooting (home1) or manually starting smbd (home2).\n","permalink":"https://cncz.science.ru.nl/cpk/1221/","summary":"\u003cp\u003eAfter an update of the samba software, it appears that the smbd service\ndidn’t start up again. The problem was resolved by either rebooting\n(home1) or manually starting smbd (home2).\u003c/p\u003e","title":"Homedirectory unavailable"},{"content":"Currently the hardware has problems, causing the machine to randomly turn off and on. We are in the process of resolving this with our supplier.\nThe problem doesn’t appear to be hardware related, but a problem with the configuration of the OS, which we changed and it seems to be stable now.\n","permalink":"https://cncz.science.ru.nl/cpk/1219/","summary":"\u003cp\u003eCurrently the hardware has problems, causing the machine to randomly\nturn off and on. We are in the process of resolving this with our\nsupplier.\u003c/p\u003e\n\u003cp\u003eThe problem doesn’t appear to be hardware related, but a problem with\nthe configuration of the OS, which we changed and it seems to be stable\nnow.\u003c/p\u003e","title":"SPIB, reviewapp, thesis submission, timetrex intermittent failures"},{"content":"Due to a misinterpretation of the correct crontab syntax, the homeservers were rebooted daily since the beginning of this month, instead of, as we intended, once a Month on the first Monday.\n","permalink":"https://cncz.science.ru.nl/cpk/1218/","summary":"\u003cp\u003eDue to a misinterpretation of the correct crontab syntax, the\nhomeservers were rebooted daily since the beginning of this month,\ninstead of, as we intended, once a Month on the first Monday.\u003c/p\u003e","title":"Homeservers rebooted daily"},{"content":"Multiple Ubuntu 16.04 users are unable to access their homedirectories on machines that have been rebooted on monday morning. Keeping system clocks more in sync seems to have helped somewhat, but no definite solution has been found yet. Therefore we decided to reboot the homeservers only the *first* Monday of each month. In the meantime we still hope for a real solution.\n","permalink":"https://cncz.science.ru.nl/cpk/1215/","summary":"\u003cp\u003eMultiple Ubuntu 16.04 users are unable to access their homedirectories\non machines that have been rebooted on monday morning. Keeping system\nclocks more in sync seems to have helped somewhat, but no definite\nsolution has been found yet. Therefore we decided to reboot the\nhomeservers only the *first* Monday of each month. In the meantime we\nstill hope for a real solution.\u003c/p\u003e","title":"Homedirectories unavailable on monday mornings"},{"content":"The server of DHZ had a problem with the hardware, the hardware was fixed on 2017-09-29, the website DHZ could be restored more quickly on a different server, limiting the outage to a few hours.\n","permalink":"https://cncz.science.ru.nl/cpk/1217/","summary":"\u003cp\u003eThe server of DHZ had a problem with the hardware, the hardware was\nfixed on 2017-09-29, the website DHZ could be restored more quickly on a\ndifferent server, limiting the outage to a few hours.\u003c/p\u003e","title":"DIY down due to hardware problem"},{"content":"This morning, the homeservers were automatically upgraded with normal updates, after which the windows file servicewas not restarted. The problem was resolved by restarting the machines.\n","permalink":"https://cncz.science.ru.nl/cpk/1216/","summary":"\u003cp\u003eThis morning, the homeservers were automatically upgraded with normal\nupdates, after which the windows file servicewas not restarted. The\nproblem was resolved by restarting the machines.\u003c/p\u003e","title":"Homedirectories unavailable"},{"content":"For yet unknown reasons the OpenVPN service did not start at the Monday morning reboot. We started the service manually.\n","permalink":"https://cncz.science.ru.nl/cpk/1214/","summary":"\u003cp\u003eFor yet unknown reasons the OpenVPN service did not start at the Monday\nmorning reboot. We started the service manually.\u003c/p\u003e","title":"OpenVPN not started at reboot"},{"content":"The server of DHZ is having problems, while we are solving this with Dell support, all changes can be handled via us (tel: 53535) or postmaster@science.ru.nl\n","permalink":"https://cncz.science.ru.nl/cpk/1213/","summary":"\u003cp\u003eThe server of DHZ is having problems, while we are solving this with\nDell support, all changes can be handled via us (tel: 53535) or\npostmaster@science.ru.nl\u003c/p\u003e","title":"DIY down due to hardware problem"},{"content":"Saturday July 22 at 11:37, there was a power outage in the Huygens building, also for all equipment connected to emergency power. The power outage lasted long enough to leave even devices and rooms with a UPS battery backup without power. This included all network equipment (routers, switches, wireless access points) and all servers in the C\u0026amp;CZ large server room.\nWhen power returned from 14:08, several devices were defective:\n- Half of the fully redundant FNWI router was defective. External companies in the UBC are not doubly connected to their provider, so they had no connectivity until Monday, when their connectivity was switched. Since Monday afternoon, the FNWI router has been repaired, so is redundant again.\n- Eight power distribution units (PDUs), that each supply power to ca. eight servers in the C\u0026amp;CZ server room were defective. Power connections of the most important servers were switched to different outlets on Saturday afternoon or these servers were restarted after replacement of their power distributors. On Monday the rest of the computer cluster nodes have been restarted.\nAs of August 1, the emergency power in the Huygens building is guaranteed again. The UVB investigated and solved all problems.\n","permalink":"https://cncz.science.ru.nl/cpk/1212/","summary":"\u003cp\u003eSaturday July 22 at 11:37, there was a power outage in the Huygens\nbuilding, also for all equipment connected to emergency power. The power\noutage lasted long enough to leave even devices and rooms with a UPS\nbattery backup without power. This included all network equipment\n(routers, switches, wireless access points) and all servers in the C\u0026amp;CZ\nlarge server room.\u003c/p\u003e\n\u003cp\u003eWhen power returned from 14:08, several devices were defective:\u003c/p\u003e\n\u003cp\u003e- Half of the fully redundant FNWI router was defective. External\ncompanies in the UBC are not doubly connected to their provider, so they\nhad no connectivity until Monday, when their connectivity was switched.\nSince Monday afternoon, the FNWI router has been repaired, so is\nredundant again.\u003c/p\u003e","title":"Emergency power failure Huygens building lasted hours"},{"content":"Because of a planned upgrade, gitlab.science.ru.nl and gitlab.pep.cs.ru.nl will not be available.\n","permalink":"https://cncz.science.ru.nl/cpk/1211/","summary":"\u003cp\u003eBecause of a planned upgrade, gitlab.science.ru.nl and\ngitlab.pep.cs.ru.nl will not be available.\u003c/p\u003e","title":"GitLab temporarily unavailable during upgrade"},{"content":"LibreOffice and other software suites using Java (jvm) internally are affected by the Ubuntu 14.04 kernel update patching the Stack Clash. It seems that Linux kernel developers, Ubuntu developers and JVM developers are working hard world-wide in finding a proper solution. Work-around ‘JAVA_TOOL_OPTIONS=-Xss1280k libreoffice’. Ubunti released a fix.\n","permalink":"https://cncz.science.ru.nl/cpk/1210/","summary":"\u003cp\u003eLibreOffice and other software suites using Java (jvm) internally are\naffected by the Ubuntu 14.04 kernel update patching the Stack Clash. It\nseems that Linux kernel developers, Ubuntu developers and JVM developers\nare working hard world-wide in finding a proper solution. Work-around\n‘JAVA_TOOL_OPTIONS=-Xss1280k libreoffice’. Ubunti released a fix.\u003c/p\u003e","title":"LibreOffice problem using Ubuntu 14.04"},{"content":"Apologies.\nAffected disks:\nacfiles beevee bioniccell bio-orgchem celbio1 celbio2 chemprac csgi-archief csg-projecten csg-staf desda ds ehef1 ehef2 ehef3 femtospin geminstr2 giphouse gissig gmi hfml-backup hfml-backup2 hfml-backup-inst highres impuls introcie isis janvanhest kaartenbak kangoeroe mathsolcie microbiology microbiology2 milkun2 milkun2RenD milkun3 milkun5 milkun6 milkun7 milkun7rw mwstudiereis neuroinf neuroinf2 olympus puc randomwalkmodel secres2 sigma sigmacies spectra spectra-rw spm spmdata3 spmdata4 spmdata5 spmdata6 spmdata7 spmstaff ssi staff-hfml stroom thalia ucm vsc vsc1 vsc10 vsc11 vsc12 vsc13 vsc14 vsc15 vsc2 vsc3 vsc4 vsc5 vsc6 vsc7 vsc8 vsc9 vscadmin wiskalg wiskunde wkru\n","permalink":"https://cncz.science.ru.nl/cpk/1209/","summary":"\u003cp\u003eApologies.\u003c/p\u003e\n\u003cp\u003eAffected disks:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eacfiles beevee bioniccell bio-orgchem celbio1 celbio2\u003c/code\u003e\n\u003ccode\u003echemprac csgi-archief csg-projecten csg-staf desda ds ehef1\u003c/code\u003e\n\u003ccode\u003eehef2 ehef3 femtospin geminstr2 giphouse gissig gmi hfml-backup hfml-backup2 hfml-backup-inst highres impuls\u003c/code\u003e\n\u003ccode\u003eintrocie isis janvanhest kaartenbak kangoeroe mathsolcie microbiology microbiology2\u003c/code\u003e\n\u003ccode\u003emilkun2 milkun2RenD milkun3 milkun5 milkun6 milkun7 milkun7rw\u003c/code\u003e\n\u003ccode\u003emwstudiereis neuroinf neuroinf2 olympus puc randomwalkmodel secres2 sigma sigmacies spectra spectra-rw\u003c/code\u003e\n\u003ccode\u003espm spmdata3 spmdata4 spmdata5 spmdata6 spmdata7 spmstaff ssi staff-hfml stroom thalia ucm vsc\u003c/code\u003e\n\u003ccode\u003evsc1 vsc10 vsc11 vsc12 vsc13 vsc14 vsc15 vsc2 vsc3 vsc4 vsc5 vsc6 vsc7 vsc8 vsc9 vscadmin wiskalg wiskunde wkru\u003c/code\u003e\u003c/p\u003e","title":"Fileserver needed reboot after fatal typo"},{"content":"Sunday evening, one of the archive disks failed. The data on it was lost, as it wasn’t in a redundant setup. After the weekly reboot, the server hung on this disk being broken. It took us a while to get the server up again.\n","permalink":"https://cncz.science.ru.nl/cpk/1208/","summary":"\u003cp\u003eSunday evening, one of the archive disks failed. The data on it was\nlost, as it wasn’t in a redundant setup. After the weekly reboot, the\nserver hung on this disk being broken. It took us a while to get the\nserver up again.\u003c/p\u003e","title":"Server TCMR storing na disk-falen"},{"content":"Due to maintenance the wifi network on campus (Eduroam) will not be available for twenty minutes on Monday night between 10 pm and 8 pm. During those twenty minutes your mobile device appears to be connected with the wifi network but you will notice there is no internet connection. After this interruption the connection will be established automatically. During the maintenance period additional short interruptions may occur.\nMonday evening the wifinetwork will be placed behind the new firewalls of the Radboud University. When this is done, users of Eduroam on our campus are no longer directly reachable from the Internet. We are doing this to protect wifi users against viruses like the Wannacry virus that was used for the worldwide ransomware attack last week.\n","permalink":"https://cncz.science.ru.nl/cpk/1207/","summary":"\u003cp\u003eDue to maintenance the wifi network on campus (Eduroam) will not be\navailable for twenty minutes on Monday night between 10 pm and 8 pm.\nDuring those twenty minutes your mobile device appears to be connected\nwith the wifi network but you will notice there is no internet\nconnection. After this interruption the connection will be established\nautomatically. During the maintenance period additional short\ninterruptions may occur.\u003c/p\u003e\n\u003cp\u003eMonday evening the wifinetwork will be placed behind the new firewalls\nof the Radboud University. When this is done, users of Eduroam on our\ncampus are no longer directly reachable from the Internet. We are doing\nthis to protect wifi users against viruses like the Wannacry virus that\nwas used for the worldwide ransomware attack last week.\u003c/p\u003e","title":"Eduroam wifi behind firewall"},{"content":"Switch es7-huyg-04-070 of a server rack became powerless after maintenance in the computer room of C\u0026amp;CZ. Restoring power and powering up the switch resolved all problems.\n","permalink":"https://cncz.science.ru.nl/cpk/1206/","summary":"\u003cp\u003eSwitch es7-huyg-04-070 of a server rack became powerless after\nmaintenance in the computer room of C\u0026amp;CZ. Restoring power and powering\nup the switch resolved all problems.\u003c/p\u003e","title":"Network failure server rack"},{"content":"Between 23:30 and 00:30 the fixed phones will be out of service for about half an hour. Between 00.30 and 02.00 hours, a few minutes of internet interruption will take place. At those moments, RU services can not be accessed from outside the campus.\n","permalink":"https://cncz.science.ru.nl/cpk/1204/","summary":"\u003cp\u003eBetween 23:30 and 00:30 the fixed phones will be out of service for\nabout half an hour. Between 00.30 and 02.00 hours, a few minutes of\ninternet interruption will take place. At those moments, RU services can\nnot be accessed from outside the campus.\u003c/p\u003e","title":"RU network maintenance (mainly fixed phones)"},{"content":"The central network switch in the serverroom at the Faculty of Science will be restarted in connection with some software maintenance. Many servers and services are not available for approx 20 minutes.\n","permalink":"https://cncz.science.ru.nl/cpk/1205/","summary":"\u003cp\u003eThe central network switch in the serverroom at the Faculty of Science\nwill be restarted in connection with some software maintenance. Many\nservers and services are not available for approx 20 minutes.\u003c/p\u003e","title":"Maintenance network Serverroom FNWI in Huygens building"},{"content":"The RU wifi network (eduroam) will be unavailable on Monday evening April 24 between 23:00 and midnight for half an hour due to maintenance work.\n","permalink":"https://cncz.science.ru.nl/cpk/1203/","summary":"\u003cp\u003eThe RU wifi network (eduroam) will be unavailable on Monday evening\nApril 24 between 23:00 and midnight for half an hour due to maintenance\nwork.\u003c/p\u003e","title":"Eduroam wifi maintenance"},{"content":"An unattended update of the virtual hosting software (libvirt) triggered a netwerk stack restart. This made the virtual machines unavailable on the network. After a reboot of the virtual hosts (vos and wolf), the virtual machines were available again. Action was not taken immediately, because the alarm mails didn’t reach us, because the mailservers could not be reached. To improve this situation, steps are taken to route the alarms also via alternative channels (sms, whatsapp, signal, etc). Also the network configuration of the virtual machines has been changed, this will hopefully make it less vulnerable to these updates.\nAffected services:\nEmail: smtp1, smtp2, mx1 (mail servers) Web services: est2, redmine2 (webserver, redmine server of blackholecam.org) Windows users: ms3 (windows login server), bfacdc03, bfacdc04 (windows domain controllers) GitLab users: gitlab.science.ru.nl, gitlab.pep.cs.ru.nl (GitLab servers) ","permalink":"https://cncz.science.ru.nl/cpk/1201/","summary":"\u003cp\u003eAn unattended update of the virtual hosting software (libvirt) triggered\na netwerk stack restart. This made the virtual machines unavailable on\nthe network. After a reboot of the virtual hosts (vos and wolf), the\nvirtual machines were available again. Action was not taken immediately,\nbecause the alarm mails didn’t reach us, because the mailservers could\nnot be reached. To improve this situation, steps are taken to route the\nalarms also via alternative channels (sms, whatsapp, signal, etc). Also\nthe network configuration of the virtual machines has been changed, this\nwill hopefully make it less vulnerable to these updates.\u003c/p\u003e","title":"Some virtual servers temporarily not available"},{"content":"The printer has to be repaired, but the engineer can’t easily fix it. We hope to have the printer operational again in the near future. A new one with service contract has been ordered, in order to make the poster service more reliable. In the meantime you might use the RU copyshop.\n","permalink":"https://cncz.science.ru.nl/cpk/1202/","summary":"\u003cp\u003eThe printer has to be repaired, but the engineer can’t easily fix it. We\nhope to have the printer operational again in the near future. A new one\nwith service contract has been ordered, in order to make the poster\nservice more reliable. In the meantime you might use the \u003ca href=\"http://www.ru.nl/facilitairbedrijf/winkels/copyshop/\" target=\"_blank\"\u003eRU\ncopyshop\u003c/a\u003e.\u003c/p\u003e","title":"Poster printer \"kamerbreed\" broken"},{"content":"Coma00 serves astro0, astro1, astro3 and astro4 volumes, the server crashed on a kernel-BUG, Monday morning the server was restarted and service resumed normally.\n","permalink":"https://cncz.science.ru.nl/cpk/1200/","summary":"\u003cp\u003eComa00 serves astro0, astro1, astro3 and astro4 volumes, the server\ncrashed on a kernel-BUG, Monday morning the server was restarted and\nservice resumed normally.\u003c/p\u003e","title":"Crash coma00 server"},{"content":"Monday evening March 6, there will be maintenance on RU network equipment. On March 7 between ca. 01:00-01:30 no network traffic will be possible at the Faculty of Science on the wired and wireless networks. From 23:00 until March 7 02:00 there will be a period where no traffic between RU and Internet is possible. Please think which processes depend on network connectivity and prepare for this outage if necessary.\n","permalink":"https://cncz.science.ru.nl/cpk/1199/","summary":"\u003cp\u003eMonday evening March 6, there will be maintenance on RU network\nequipment. On March 7 between ca. 01:00-01:30 no network traffic will be\npossible at the Faculty of Science on the wired and wireless networks.\nFrom 23:00 until March 7 02:00 there will be a period where no traffic\nbetween RU and Internet is possible. Please think which processes depend\non network connectivity and prepare for this outage if necessary.\u003c/p\u003e","title":"Science and RU Internet network maintenance"},{"content":"NOT_YET_TRANSLATED\n","permalink":"https://cncz.science.ru.nl/howto/netwerk-mutaties/","summary":"\u003cp\u003e\u003ccode\u003eNOT_YET_TRANSLATED\u003c/code\u003e\u003c/p\u003e","title":"Netwerk mutaties"},{"content":"The Radius service didn’t start after the regular reboot, restarting the Radius service solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1198/","summary":"\u003cp\u003eThe Radius service didn’t start after the regular reboot, restarting the\nRadius service solved the problem.\u003c/p\u003e","title":"Science Radius down"},{"content":"Update of Strongswan server software with extra capabilities\n","permalink":"https://cncz.science.ru.nl/cpk/1197/","summary":"\u003cp\u003eUpdate of Strongswan server software with extra capabilities\u003c/p\u003e","title":"VPNsec upgrade"},{"content":"Monday morning several employees of FNWI were affected by a fault within the RU Exchange design whereby they could not send their mail to recipients outside of the RU Exchange (i.e. @science.ru.nl, @cs.ru.nl or elsewhere). ISC had added two additional servers to the RU Exchange service the week before, which were not yet allowed to drop their outgoing mail on designated servers for that purpose. Not all FNWI employees using RU Exchange were affected, however, since four out of six servers were still functioning properly and employees using e.g. Thunderbird use servers outside of the RU Exchange for sending their mails.\n","permalink":"https://cncz.science.ru.nl/cpk/1196/","summary":"\u003cp\u003eMonday morning several employees of FNWI were affected by a fault within\nthe RU Exchange design whereby they could not send their mail to\nrecipients outside of the RU Exchange (i.e. @science.ru.nl, @cs.ru.nl or\nelsewhere). ISC had added two additional servers to the RU Exchange\nservice the week before, which were not yet allowed to drop their\noutgoing mail on designated servers for that purpose. Not all FNWI\nemployees using RU Exchange were affected, however, since four out of\nsix servers were still functioning properly and employees using e.g.\nThunderbird use servers outside of the RU Exchange for sending their\nmails.\u003c/p\u003e","title":"Problem with mail delivery from RU Exchange"},{"content":"The central network switch in the serverroom at the Faculty of Science will be restarted in connection with an software upgrade. Many servers and services are not available for approx 20 minutes.\n","permalink":"https://cncz.science.ru.nl/cpk/1195/","summary":"\u003cp\u003eThe central network switch in the serverroom at the Faculty of Science\nwill be restarted in connection with an software upgrade. Many servers\nand services are not available for approx 20 minutes.\u003c/p\u003e","title":"Maintenance network Serverroom FNWI in Huygens building"},{"content":"In Huygens wing 8 a network switchmodule crashed. Several users lost their connection to the data and telephone network for some time. The switchmodule has been replaced.\n","permalink":"https://cncz.science.ru.nl/cpk/1193/","summary":"\u003cp\u003eIn Huygens wing 8 a network switchmodule crashed. Several users lost\ntheir connection to the data and telephone network for some time. The\nswitchmodule has been replaced.\u003c/p\u003e","title":"Network failure in Huygens wing 8"},{"content":"The new RU Fortigate firewall, that is in place since December 13, manages fragmented IP packets inconsistently. Depending on the VPN client and its settings, this can cause problems for VPN users. The ISC found a solution for the cenral RU VPN in changing the configuration of the RU VPN as of 2016-12-19 15:50 hours. While waiting for the final solution, a temporary workaround has been used in the Fortigate firewall on April 19, which makes the problem disappear.\n","permalink":"https://cncz.science.ru.nl/cpk/1194/","summary":"\u003cp\u003eThe new RU Fortigate firewall, that is in place since December 13,\nmanages fragmented IP packets inconsistently. Depending on the VPN\nclient and its settings, this can cause problems for VPN users. The\n\u003ca href=\"http://www.ru.nl/isc\" target=\"_blank\"\u003eISC\u003c/a\u003e found a solution for the cenral RU VPN in\nchanging the configuration of the RU VPN as of 2016-12-19 15:50 hours.\nWhile waiting for the final solution, a temporary workaround has been\nused in the Fortigate firewall on April 19, which makes the problem\ndisappear.\u003c/p\u003e","title":"VPNsec (and RU VPN) problem with new RU firewall"},{"content":"In Huygens wing 5 a network switchmodule crashed. Several users lost their connection to the data and telephone network for some time. The switchmodule has been replaced.\n","permalink":"https://cncz.science.ru.nl/cpk/1192/","summary":"\u003cp\u003eIn Huygens wing 5 a network switchmodule crashed. Several users lost\ntheir connection to the data and telephone network for some time. The\nswitchmodule has been replaced.\u003c/p\u003e","title":"Network failure in Huygens wing 5"},{"content":"Due to maintenance of the indoor cellphone equipment, this equipment will be out of service for one hour max on Monday December 5th.\n","permalink":"https://cncz.science.ru.nl/cpk/1190/","summary":"\u003cp\u003eDue to maintenance of the indoor cellphone equipment, this equipment\nwill be out of service for one hour max on Monday December 5th.\u003c/p\u003e","title":"Maintenance indoor Vodafone cellphone network Huygens"},{"content":"The printer has to be repaired. Spare parts have been ordered. We hope to have the printer operational again this month.\n","permalink":"https://cncz.science.ru.nl/cpk/1191/","summary":"\u003cp\u003eThe printer has to be repaired. Spare parts have been ordered. We hope\nto have the printer operational again this month.\u003c/p\u003e","title":"Poster printer \"kamerbreed\" broken"},{"content":"Due to a failed power distribution unit (PDU) a network switch powered down. As a result of that the mentioned machines lost their network connectivity. After reconnecting the switch to a different PDU, the machines were reachable again.\n","permalink":"https://cncz.science.ru.nl/cpk/1189/","summary":"\u003cp\u003eDue to a failed power distribution unit (PDU) a network switch powered\ndown. As a result of that the mentioned machines lost their network\nconnectivity. After reconnecting the switch to a different PDU, the\nmachines were reachable again.\u003c/p\u003e","title":"Some machines down due to failed power distribution unit"},{"content":"RU Corporate Identity Information Starting September 1, 2004, a new corporate identity has been introduced in which the name and logo of the university changed, but also the layout of all printed material. For MS-Word, templates and manuals have been centrally developed. Information can be found elsewhere. For LaTeX C\u0026amp;CZ developed a new letter layout.\nRU letter layout for LaTeX The new version supports an English and a colored version of the logo.\nOn the C\u0026amp;CZ Unix systems one can find in /usr/local/share/texmf/tex/latex/rubrief/ on linux machines the following files:\nRUlogo.eps postscript version of the logo\nRUlogo.jpg jpg version of the logo for pdflatex\nfnwi.tex example file for address information\nrubrief.cls the documentclass file for the rubrief letter layout\nRU_voorbeeld.tex an example letter for the new corporate identity\nOn Windows PC’s it is also possible to use the newest version of LaTeX including the rubrief style, by attaching the S-disk.\nThen you’ll find the above mentioned files in the folder: S:\\texlive\\texmf-local\\tex\\latex\\rubrief.\nCopy RU_voorbeeld.tex and fnwi.tex to a place wher you can write them. The rubrief style is an adapted version of the letter class and can be used like that. Look at the example to see which macro’s exist to supply address and sender information. The logo can be printed in Dutch as well as in English and one can choose a color version of the logo (option color). Please note that you’ll have to use dvips yourself before sending the dvi-file to a Postscript printer. Finally, it is also possible to make a pdf version of a letter with the command pdflatex, this will then immediately contain the logo.\n","permalink":"https://cncz.science.ru.nl/howto/medewerkers-latexbrief/","summary":"\u003ch2 id=\"ru-corporate-identity-information\"\u003eRU Corporate Identity Information\u003c/h2\u003e\n\u003cp\u003eStarting September 1, 2004, a new corporate identity has been introduced\nin which the name and logo of the university changed, but also the\nlayout of all printed material. For MS-Word, templates and manuals have\nbeen centrally developed. Information can be found\n\u003ca href=\"https://www.ru.nl/en/services/campus-facilities-buildings/communication-and-promotion/design/corporate-identity\" target=\"_blank\"\u003eelsewhere\u003c/a\u003e. For LaTeX C\u0026amp;CZ developed a\nnew letter layout.\u003c/p\u003e\n\u003ch3 id=\"ru-letter-layout-for-latex\"\u003eRU letter layout for LaTeX\u003c/h3\u003e\n\u003cp\u003eThe new version supports an English and a colored version of the logo.\u003c/p\u003e","title":"Medewerkers latexbrief"},{"content":"A few servers powered down due to a failed power distribution unit (PDU), because they were not redundantly connected. After switching to a different PDU, the servers were running again. The redundant connections of important servers will be checked.\n","permalink":"https://cncz.science.ru.nl/cpk/1188/","summary":"\u003cp\u003eA few servers powered down due to a failed power distribution unit\n(PDU), because they were not redundantly connected. After switching to a\ndifferent PDU, the servers were running again. The redundant connections\nof important servers will be checked.\u003c/p\u003e","title":"Servers down due to failed power distribution unit"},{"content":"After the maintenance activities as mentioned below, a large number of workplaces of Molecular Biology at RIMLS did not receive an ip-address. After a reset by ISC of a table in the central RU-firewall, the problem was solved.\n","permalink":"https://cncz.science.ru.nl/cpk/1187/","summary":"\u003cp\u003eAfter the maintenance activities as mentioned below, a large number of\nworkplaces of Molecular Biology at RIMLS did not receive an ip-address.\nAfter a reset by ISC of a table in the central RU-firewall, the problem\nwas solved.\u003c/p\u003e","title":"RU network maintenance problem"},{"content":"In the night of 12 to 13 September, maintenance on the Radboud University network will be performed from 11pm to 03am. Several service interruptions may occur, like internet access via SURFnet, mail via Exchange, Bass, Osiris and Blackboard. We advise to check which systems might be affected by this and if possible shift network activity to a different time slot. You also might think about systems with alerts via Internet.\n","permalink":"https://cncz.science.ru.nl/cpk/1186/","summary":"\u003cp\u003eIn the night of 12 to 13 September, maintenance on the Radboud\nUniversity network will be performed from 11pm to 03am. Several service\ninterruptions may occur, like internet access via SURFnet, mail via\nExchange, Bass, Osiris and Blackboard. We advise to check which systems\nmight be affected by this and if possible shift network activity to a\ndifferent time slot. You also might think about systems with alerts via\nInternet.\u003c/p\u003e","title":"RU network maintenance"},{"content":"After the Monday morning reboot, the Samba network drive service was not running on all Ubuntu 12.04 servers. Reinitializing all Samba configuration files solved the problem. Problems fixed at 08:30 for home servers, 10:25 departmental printers, 12:45 departmental server.\n","permalink":"https://cncz.science.ru.nl/cpk/1184/","summary":"\u003cp\u003eAfter the Monday morning reboot, the Samba network drive service was not\nrunning on all Ubuntu 12.04 servers. Reinitializing all Samba\nconfiguration files solved the problem. Problems fixed at 08:30 for home\nservers, 10:25 departmental printers, 12:45 departmental server.\u003c/p\u003e","title":"Network drives not available after reboot"},{"content":"Due to maintenance, the digital exam environment will not be available for several hours.\n","permalink":"https://cncz.science.ru.nl/cpk/1185/","summary":"\u003cp\u003eDue to maintenance, the digital exam environment will not be available\nfor several hours.\u003c/p\u003e","title":"Digital exam environment not available due to maintenance"},{"content":"Three cluster nodes powered down due to a failed PDU. After replacing the PDU, the nodes came up normally.\n","permalink":"https://cncz.science.ru.nl/cpk/1183/","summary":"\u003cp\u003eThree cluster nodes powered down due to a failed PDU. After replacing\nthe PDU, the nodes came up normally.\u003c/p\u003e","title":"Power distribution unit failed"},{"content":"When starting Atlas.ti, you get the message that the license expires in a few days or already has expired. There is, however, a three-weeks grace period during which the users will see a warning message but can still use the program normally. The vendor has promised to send the license June 24, and to send it earlier next years. The new license key can be requested from C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/cpk/1182/","summary":"\u003cp\u003eWhen starting Atlas.ti, you get the message that the license expires in\na few days or already has expired. There is, however, a three-weeks\ngrace period during which the users will see a warning message but can\nstill use the program normally. The vendor has promised to send the\nlicense June 24, and to send it earlier next years. The new license key\ncan be \u003ca href=\"/howto/contact/\"\u003erequested from C\u0026amp;CZ\u003c/a\u003e.\u003c/p\u003e","title":"Atlas.ti reports: license (almost) expired"},{"content":" Info\nsvn.science.ru.nl has been turned off!\nGitLab is the successor of our Subversion service!\nMigrating from Subversion to Gitlab We have automated the migration from Subversion to GitLab. Contact postmaster@science.ru.nl if you wish to have clone access to your migrated repository.\nManual migration from Subversion to Gitlab Inspired by this short manual, an SVN to git conversion could boil down to something like:\ncd /tmp/ git svn clone --no-metadata -A users.txt https://svn.science.ru.nl/repos/myproject cd myproject git remote add gitlab git@gitlab.science.ru.nl:yourscienceloginname/myproject.git git push --set-upstream gitlab master Git URLs (https and ssh) are shown on the top of the project page in gitlab. The generic repository URL for the science SVN server is:\nhttps://svn.science.ru.nl/repos/{repository}\nAnd for CS:\nhttps://svn.cs.ru.nl/repos/{repository}\nYou can also see this for public svn repositories on https://svn.science.ru.nl (viewing private repositories requires authentication).\nMigrating to a private SVN repository It is possible to continue to use subversion for your personal repository. In that case, you C\u0026amp;CZ can help you move your repository off the svn server to your home directory. From that point, you can access the repository via one of the login servers.\nOld Subversion wiki page The old subversion wiki page is archived here\n","permalink":"https://cncz.science.ru.nl/howto/archive/subversion/","summary":"\u003cdiv\u003e\u003csvg width=\"0\" height=\"0\" display=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003csymbol id=\"tip-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.967-111.033 248-248 248S8 392.967 8 256 119.033 8 256 8s248 111.033 248 248zM227.314 387.314l184-184c6.248-6.248 6.248-16.379 0-22.627l-22.627-22.627c-6.248-6.249-16.379-6.249-22.628 0L216 308.118l-70.059-70.059c-6.248-6.248-16.379-6.248-22.628 0l-22.627 22.627c-6.248 6.248-6.248 16.379 0 22.627l104 104c6.249 6.249 16.379 6.249 22.628.001z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"note-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"warning-notice\" viewBox=\"0 0 576 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"info-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 110c23.196 0 42 18.804 42 42s-18.804 42-42 42-42-18.804-42-42 18.804-42 42-42zm56 254c0 6.627-5.373 12-12 12h-88c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h12v-64h-12c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h64c6.627 0 12 5.373 12 12v100h12c6.627 0 12 5.373 12 12v24z\"/\u003e\u003c/symbol\u003e\u003c/svg\u003e\u003c/div\u003e\u003cdiv class=\"notice info\" \u003e\n\u003cp class=\"first notice-title\"\u003e\u003cspan class=\"icon-notice baseline\"\u003e\u003csvg\u003e\u003cuse href=\"#info-notice\"\u003e\u003c/use\u003e\u003c/svg\u003e\u003c/span\u003eInfo\u003c/p\u003e","title":"Subversion"},{"content":"Due to a problem with a new license the license server didn’t go down for the weekly reboot. When this came to attention, the server was rebooted and the problem was solved.\nAltera Ansys Accelrys Genesys Hdlworks Idapro Xilinx IntelCompiler Ingr Maple Mathematica Matlab MentorGraphics Mestrelab Topspin Orcad Originlab StateaseRlm\n","permalink":"https://cncz.science.ru.nl/cpk/1181/","summary":"\u003cp\u003eDue to a problem with a new license the license server didn’t go down\nfor the weekly reboot. When this came to attention, the server was\nrebooted and the problem was solved.\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eAltera Ansys Accelrys Genesys Hdlworks Idapro\u003c/code\u003e\n\u003ccode\u003eXilinx IntelCompiler Ingr Maple Mathematica Matlab MentorGraphics Mestrelab\u003c/code\u003e\n\u003ccode\u003eTopspin Orcad Originlab StateaseRlm\u003c/code\u003e\u003c/p\u003e","title":"License server reboot problem"},{"content":"Matlab (until 08:45), Origin (09:00), Mestrenova (9:20), Mathematica (9:30) and Orcad (11:20) service not started. Cause yet unknown.\n","permalink":"https://cncz.science.ru.nl/cpk/1176/","summary":"\u003cp\u003eMatlab (until 08:45), Origin (09:00), Mestrenova (9:20), Mathematica\n(9:30) and Orcad (11:20) service not started. Cause yet unknown.\u003c/p\u003e","title":"License server (lepelaar) reboot problem"},{"content":"The Science VPNs will be down for short maintenance, in order to switch the IP ranges. After this maintenance, there will be enough IP numbers available for the growing use of the new VPN. The old VPN has not been switched off yet, because Ubuntu 16.04 still has problems with the new VPN.\n","permalink":"https://cncz.science.ru.nl/cpk/1180/","summary":"\u003cp\u003eThe Science \u003ca href=\"/howto/vpn/\"\u003eVPNs\u003c/a\u003e will be down for short maintenance, in\norder to switch the IP ranges. After this maintenance, there will be\nenough IP numbers available for the growing use of the new VPN. The old\nVPN has not been switched off yet, because \u003ca href=\"https://bugs.launchpad.net/bugs/1570352\" target=\"_blank\"\u003eUbuntu 16.04 still has\nproblems with the new VPN\u003c/a\u003e.\u003c/p\u003e","title":"Both Science VPNs down for short maintenance"},{"content":"Because of a major security update that will be released tonight, GitLab will not be available. We will update GitLab on Tuesday morning. After that, gitlab.science.ru.nl will be available again.\n","permalink":"https://cncz.science.ru.nl/cpk/1179/","summary":"\u003cp\u003eBecause of a \u003ca href=\"https://about.gitlab.com/2016/04/28/gitlab-major-security-update-for-cve-2016-4340/\" target=\"_blank\"\u003emajor security\nupdate\u003c/a\u003e\nthat will be released tonight, \u003ca href=\"/howto/gitlab/\"\u003eGitLab\u003c/a\u003e will not be\navailable. We will update GitLab on Tuesday morning. After that,\ngitlab.science.ru.nl will be available again.\u003c/p\u003e","title":"Gitlab temporarily unavailable"},{"content":"A backup file, dated “Fri Apr 29 05:07:04 CEST 2016” has accidentially been restored on our production GitLab server, where it should have happened on a test server. This caused all repositories, wiki’s, issues etc. to be reset to the state of today 5.07 AM. Commits pushed between 5 am and 2:30 PM should be pushed again. Sorry for the inconvenience.\n","permalink":"https://cncz.science.ru.nl/cpk/1178/","summary":"\u003cp\u003eA backup file, dated “Fri Apr 29 05:07:04 CEST 2016” has accidentially\nbeen restored on our production \u003ca href=\"/howto/gitlab/\"\u003eGitLab server\u003c/a\u003e, where\nit should have happened on a test server. This caused all repositories,\nwiki’s, issues etc. to be reset to the state of today 5.07 AM. Commits\npushed between 5 am and 2:30 PM should be pushed again. Sorry for the\ninconvenience.\u003c/p\u003e","title":"Gitlab backup accidentially restored on production server"},{"content":"The server comas1 did not start, probably due to some timing problems between the RAID array and OS. Solution: reboot - hardware reset.\n","permalink":"https://cncz.science.ru.nl/cpk/1177/","summary":"\u003cp\u003eThe server comas1 did not start, probably due to some timing problems\nbetween the RAID array and OS. Solution: reboot - hardware reset.\u003c/p\u003e","title":"Server coma00 Monday morning reboot failed"},{"content":"Yesterday the RU outgoing mailserver smtpout3.ru.nl got listed on the SORBS blacklist of confirmed senders of spam and phishing mails. The reason probably is that recently many students fell for phishing mails, which made their username and password known to Internet criminals. These criminals use that to send spam and phishing mails. Because also the Science mailservers use that blacklist, we did not accept mail from the RU mailserver anymore. The senders received an error message: “Your message wasn’t delivered due to a permission or security issue.” We solved this for our Science users by putting the RU mailserver on our own whitelist.\n","permalink":"https://cncz.science.ru.nl/cpk/1175/","summary":"\u003cp\u003eYesterday the RU outgoing mailserver smtpout3.ru.nl got listed on the\n\u003ca href=\"http://dnsbl.sorbs.net/\" target=\"_blank\"\u003eSORBS blacklist\u003c/a\u003e of confirmed senders of spam\nand phishing mails. The reason probably is that recently many students\nfell for phishing mails, which made their username and password known to\nInternet criminals. These criminals use that to send spam and phishing\nmails. Because also the Science mailservers use that blacklist, we did\nnot accept mail from the RU mailserver anymore. The senders received an\nerror message: “Your message wasn’t delivered due to a permission or\nsecurity issue.” We solved this for our Science users by putting the RU\nmailserver on our own whitelist.\u003c/p\u003e","title":"RU mailserver blacklisted, for Science too"},{"content":"Several services were inaccessible due to power loss of a rack switch caused by a failing PDU (power distribution unit). The PDU has been temporarily replaced.\nSevices include:\nhome directories, printing, authentication services, licenses, vpn, websites, databases, mailman and dns resolvers.\n","permalink":"https://cncz.science.ru.nl/cpk/1174/","summary":"\u003cp\u003eSeveral services were inaccessible due to power loss of a rack switch\ncaused by a failing PDU (power distribution unit). The PDU has been\ntemporarily replaced.\u003c/p\u003e\n\u003cp\u003eSevices include:\u003c/p\u003e\n\u003cp\u003ehome directories, printing, authentication services, licenses, vpn,\nwebsites, databases, mailman and dns resolvers.\u003c/p\u003e","title":"Power failure"},{"content":"Memory modules and or the motherboard of webserver ‘oehoe’ will be replaced. The mentioned web sites will not be available for a while.\nAffected web services:\naerochem,akn,aqua,bgard,boekingen,bomen,cac,cafe,celbi,docenten,exo,filosofie,hfml iconic,ifl,irmacrash,itp2011,iwwr-boookings,kanboard,kndv,labservant,math,mbfys,mbp,mealab, nieuwescheikunde,nlt,pilab,printeger,probiomed,puff,pz,qpl,quantumcs,ra,refbase,rrl, scheikundeolympiade,siam,sigma-lustrum,smartech4health,sws,theorphys,tk,toernooi,tredd, trooster,vsc,w4kangoeroe,wortel,zwaartekrachtsgolven\n","permalink":"https://cncz.science.ru.nl/cpk/1173/","summary":"\u003cp\u003eMemory modules and or the motherboard of webserver ‘oehoe’ will be\nreplaced. The mentioned web sites will not be available for a while.\u003c/p\u003e\n\u003cp\u003eAffected web services:\u003c/p\u003e\n\u003cp\u003eaerochem,akn,aqua,bgard,boekingen,bomen,cac,cafe,celbi,docenten,exo,filosofie,hfml\niconic,ifl,irmacrash,itp2011,iwwr-boookings,kanboard,kndv,labservant,math,mbfys,mbp,mealab,\nnieuwescheikunde,nlt,pilab,printeger,probiomed,puff,pz,qpl,quantumcs,ra,refbase,rrl,\nscheikundeolympiade,siam,sigma-lustrum,smartech4health,sws,theorphys,tk,toernooi,tredd,\ntrooster,vsc,w4kangoeroe,wortel,zwaartekrachtsgolven\u003c/p\u003e","title":"Hardware replacement webserver"},{"content":"A defective memory module caused spontaneous reboots. Since two modules where taken out, these reboots have not occurred anymore. Additional down time will be needed to resolve the problem.\nAffected services:\naerochem,akn,aqua,bgard,boekingen,bomen,cac,cafe,celbi,docenten,exo,filosofie,hfml iconic,ifl,irmacrash,itp2011,iwwr-boookings,kanboard,kndv,labservant,math,mbfys,mbp,mealab, nieuwescheikunde,nlt,pilab,printeger,probiomed,puff,pz,qpl,quantumcs,ra,refbase,rrl, scheikundeolympiade,siam,sigma-lustrum,smartech4health,sws,theorphys,tk,toernooi,tredd, trooster,vsc,w4kangoeroe,wortel,zwaartekrachtsgolven\n","permalink":"https://cncz.science.ru.nl/cpk/1172/","summary":"\u003cp\u003eA defective memory module caused spontaneous reboots. Since two modules\nwhere taken out, these reboots have not occurred anymore. Additional\ndown time will be needed to resolve the problem.\u003c/p\u003e\n\u003cp\u003eAffected services:\u003c/p\u003e\n\u003cp\u003eaerochem,akn,aqua,bgard,boekingen,bomen,cac,cafe,celbi,docenten,exo,filosofie,hfml\niconic,ifl,irmacrash,itp2011,iwwr-boookings,kanboard,kndv,labservant,math,mbfys,mbp,mealab,\nnieuwescheikunde,nlt,pilab,printeger,probiomed,puff,pz,qpl,quantumcs,ra,refbase,rrl,\nscheikundeolympiade,siam,sigma-lustrum,smartech4health,sws,theorphys,tk,toernooi,tredd,\ntrooster,vsc,w4kangoeroe,wortel,zwaartekrachtsgolven\u003c/p\u003e","title":"Hardware failure webserver"},{"content":"Because of an upgrade of gitlab to version 8.5.7, the GitLab service was offline for a while.\n","permalink":"https://cncz.science.ru.nl/cpk/1171/","summary":"\u003cp\u003eBecause of an upgrade of gitlab to version 8.5.7, the\n\u003ca href=\"/howto/gitlab/\"\u003eGitLab\u003c/a\u003e service was offline for a while.\u003c/p\u003e","title":"Gitlab upgrade"},{"content":"At reboot time some file system (/opt) was not recognized, resulting in a kernel panic. Solutio: Reboot\n","permalink":"https://cncz.science.ru.nl/cpk/1169/","summary":"\u003cp\u003eAt reboot time some file system (/opt) was not recognized, resulting in\na kernel panic. Solutio: Reboot\u003c/p\u003e","title":"emoe stuck at reboot"},{"content":"For yet unknown reasons the private class network interfaces where incorrectly numbered and activated Solution: Reboot\n","permalink":"https://cncz.science.ru.nl/cpk/1170/","summary":"\u003cp\u003eFor yet unknown reasons the private class network interfaces where\nincorrectly numbered and activated Solution: Reboot\u003c/p\u003e","title":"Server isolator lacking private class networks"},{"content":"Because of an upgrade of gitlab to version 8.5.1, the GitLab service will be offline for a while.\n","permalink":"https://cncz.science.ru.nl/cpk/1168/","summary":"\u003cp\u003eBecause of an upgrade of gitlab to version 8.5.1, the\n\u003ca href=\"/howto/gitlab/\"\u003eGitLab\u003c/a\u003e service will be offline for a while.\u003c/p\u003e","title":"Gitlab upgrade"},{"content":"Because of automated updates, Several virtual host had become unreachable. Server vos: gitlab3, bfacdc04, smtp2, redmine2 Server wolf: smtp1, bfacdc03, est2\nRebooted vos and wolf.\n","permalink":"https://cncz.science.ru.nl/cpk/1167/","summary":"\u003cp\u003eBecause of automated updates, Several virtual host had become\nunreachable. Server vos: gitlab3, bfacdc04, smtp2, redmine2 Server wolf:\nsmtp1, bfacdc03, est2\u003c/p\u003e\n\u003cp\u003eRebooted vos and wolf.\u003c/p\u003e","title":"Virtual servers problem"},{"content":"For unknown reasons, the miii mail server was unavailable. Rebooted.\n","permalink":"https://cncz.science.ru.nl/cpk/1166/","summary":"\u003cp\u003eFor unknown reasons, the miii mail server was unavailable. Rebooted.\u003c/p\u003e","title":"miii server problem"},{"content":"For unknown reasons, the IMAP mail server was unavailable. The service cyrus-imapd was not correctly started. Starting this service service cyrus-imapd start solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1165/","summary":"\u003cp\u003eFor unknown reasons, the IMAP mail server was unavailable. The service\ncyrus-imapd was not correctly started. Starting this service\n\u003cstrong\u003eservice cyrus-imapd start\u003c/strong\u003e solved the problem.\u003c/p\u003e","title":"IMAP mail server problem"},{"content":"For unknown reasons, the IMAP mail server was unavailable. Mail services were halted after some time because of logging activity. As a temporary workaround logging is now performed using UDP instead of TCP.\n","permalink":"https://cncz.science.ru.nl/cpk/1164/","summary":"\u003cp\u003eFor unknown reasons, the IMAP mail server was unavailable. Mail services\nwere halted after some time because of logging activity. As a temporary\nworkaround logging is now performed using UDP instead of TCP.\u003c/p\u003e","title":"IMAP mail server problem"},{"content":"The Ubuntu 14.04 fileservers “flock” and “muckle” had problems a few times. After we reverted to the previous kernel version, the service seems to be stable again.\n","permalink":"https://cncz.science.ru.nl/cpk/1163/","summary":"\u003cp\u003eThe Ubuntu 14.04 fileservers “flock” and “muckle” had problems a few\ntimes. After we reverted to the previous kernel version, the service\nseems to be stable again.\u003c/p\u003e","title":"Fileserver problems"},{"content":"Last night the Matlab license server crashed, because the number of open file handles reached the maximum configured, because a user started a lot of Matlab processes. Because we do not yet monitor this properly and it was not reported to us, we could only repair it this morning. We increased the number of file handles by a factor of four. We assume that this will be sufficient to wait till the reboot of next Monday, when it will again be enlarged, this time by a factor of sixteen. We will also on short notice start to monitor the Matlab license server properly.\n","permalink":"https://cncz.science.ru.nl/cpk/1162/","summary":"\u003cp\u003eLast night the Matlab license server crashed, because the number of open\nfile handles reached the maximum configured, because a user started a\nlot of Matlab processes. Because we do not yet monitor this properly and\nit was not reported to us, we could only repair it this morning. We\nincreased the number of file handles by a factor of four. We assume that\nthis will be sufficient to wait till the reboot of next Monday, when it\nwill again be enlarged, this time by a factor of sixteen. We will also\non short notice start to monitor the Matlab license server properly.\u003c/p\u003e","title":"Matlab license server crashed"},{"content":"The server lilo4 stalled at shutdown during the monday morning reboot. Solution: it continued its reboot after server wielewaal became available.\n","permalink":"https://cncz.science.ru.nl/cpk/1161/","summary":"\u003cp\u003eThe server lilo4 stalled at shutdown during the monday morning reboot.\nSolution: it continued its reboot after server wielewaal became\navailable.\u003c/p\u003e","title":"Server lilo4 Monday morning reboot slowed"},{"content":"Quite a number of websites of ICIS were not available amongst which was eGroupWare. Furthermore, the boot process of workstations was impaired (because of the missing tftp). A reboot of the server seems to be sufficient to solve the issue.\nAffected websites:\nblackgem brainhealth croatia14 croatia15 cs eduspec eduspecorg egw ethergids fbkr kickstart mhealth oni snn\n","permalink":"https://cncz.science.ru.nl/cpk/1160/","summary":"\u003cp\u003eQuite a number of websites of ICIS were not available amongst which was\neGroupWare. Furthermore, the boot process of workstations was impaired\n(because of the missing tftp). A reboot of the server seems to be\nsufficient to solve the issue.\u003c/p\u003e\n\u003cp\u003eAffected websites:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eblackgem brainhealth croatia14 croatia15 cs eduspec eduspecorg egw\u003c/code\u003e\n\u003ccode\u003eethergids fbkr kickstart mhealth oni snn\u003c/code\u003e\u003c/p\u003e","title":"Webserver down: tftp \u0026 egw"},{"content":"The DHCP server didn’t have free leases on Vlan136, so new devices on Vlan136 didn’t get an IP address, so didn’t have a working network connection. After we freed some unused numbers for PCs with a fixed address, we were able to drastically enlarge the number of leases on Vlan136.\n","permalink":"https://cncz.science.ru.nl/cpk/1159/","summary":"\u003cp\u003eThe DHCP server didn’t have free leases on Vlan136, so new devices on\nVlan136 didn’t get an IP address, so didn’t have a working network\nconnection. After we freed some unused numbers for PCs with a fixed\naddress, we were able to drastically enlarge the number of leases on\nVlan136.\u003c/p\u003e","title":"No free IP numbers in Vlan136"},{"content":"In Huygens wing 2 a network switchmodule crashed twice. About 30 pc’s in the Study Area lost their connection to the network for some time. The switchmodule will be replaced on 2016-01-21 at 07:30 am.\n","permalink":"https://cncz.science.ru.nl/cpk/1158/","summary":"\u003cp\u003eIn Huygens wing 2 a network switchmodule crashed twice. About 30 pc’s in\nthe Study Area lost their connection to the network for some time. The\nswitchmodule will be replaced on 2016-01-21 at 07:30 am.\u003c/p\u003e","title":"Network failure in part of study area Huygens"},{"content":"","permalink":"https://cncz.science.ru.nl/cpk/1157/","summary":"","title":"Login servers down to activate safer kernel"},{"content":"Affected sites:\naerochem akn aqua bb2syllabus bgard boekingen boekwur bomengids cac cafe celbi dossiers est2b exo filosofie fnwi hfml iconic ifl irmacrash itp2011 iwwrbook kanboard kndv labservant leonardo math mbfys mbp nieuwescheikunde nlt notebooks olympus pilab piwik printeger projecten puff pz qpl quantumcs refbase resourceanalysis rrl scheiolymp setup siam sigma-lustrum sito smartech4health studiereis sws tango taskboard tk toernooi tredd trooster ubuntumirror vsc w4kangoeroe wortel\n","permalink":"https://cncz.science.ru.nl/cpk/1156/","summary":"\u003cp\u003eAffected sites:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eaerochem akn aqua bb2syllabus bgard boekingen boekwur bomengids cac\u003c/code\u003e\n\u003ccode\u003ecafe celbi dossiers est2b exo filosofie fnwi hfml iconic ifl irmacrash\u003c/code\u003e\n\u003ccode\u003eitp2011 iwwrbook kanboard kndv labservant leonardo math mbfys mbp\u003c/code\u003e\n\u003ccode\u003enieuwescheikunde nlt notebooks olympus pilab piwik printeger projecten\u003c/code\u003e\n\u003ccode\u003epuff pz qpl quantumcs refbase resourceanalysis rrl scheiolymp setup\u003c/code\u003e\n\u003ccode\u003esiam sigma-lustrum sito smartech4health studiereis sws tango taskboard\u003c/code\u003e\n\u003ccode\u003etk toernooi tredd trooster ubuntumirror vsc w4kangoeroe wortel\u003c/code\u003e\u003c/p\u003e","title":"Webserver down to add hard disks"},{"content":"The virtual hosts fret, wolf and vos received updates to libvirt packages, causing the network interfaces of the virtual machines running on them to fail. Solved after reboot (fret) or restart of the libvirt daemons and the virtual machines.\nAffected virtual machines:\nbfacdc03 bfacdc04 drukker est2 gitlab3 ms2 nwidc01 redmine2 smtp1 smtp2 ts2\n","permalink":"https://cncz.science.ru.nl/cpk/1155/","summary":"\u003cp\u003eThe virtual hosts fret, wolf and vos received updates to libvirt\npackages, causing the network interfaces of the virtual machines running\non them to fail. Solved after reboot (fret) or restart of the libvirt\ndaemons and the virtual machines.\u003c/p\u003e\n\u003cp\u003eAffected virtual machines:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003ebfacdc03 bfacdc04 drukker est2 gitlab3 ms2\u003c/code\u003e\n\u003ccode\u003enwidc01 redmine2 smtp1 smtp2 ts2\u003c/code\u003e\u003c/p\u003e","title":"Virtual servers network interfaces broken after updates"},{"content":"The server lilo3/4 stalled at shutdown during the monday morning reboot. Solution: power cycle. Cause currently unknown.\n","permalink":"https://cncz.science.ru.nl/cpk/1154/","summary":"\u003cp\u003eThe server lilo3/4 stalled at shutdown during the monday morning reboot.\nSolution: power cycle. Cause currently unknown.\u003c/p\u003e","title":"Server lilo3 and lilo4 Monday morning reboot failed"},{"content":"The server comas1 did not start due to some possible timing problems between the raid array and OS. Solution: skipping the mount of /vd0 and /vd1 during boot (key S), mounts fixed manually later on followed by exportfs -uaf; exportfs -raf.\nMachine failed for unknown reason at boot. Solved by rebooting.\n","permalink":"https://cncz.science.ru.nl/cpk/1153/","summary":"\u003cp\u003eThe server comas1 did not start due to some possible timing problems\nbetween the raid array and OS. Solution: skipping the mount of /vd0 and\n/vd1 during boot (key S), mounts fixed manually later on followed by\nexportfs -uaf; exportfs -raf.\u003c/p\u003e\n\u003cp\u003eMachine failed for unknown reason at boot. Solved by rebooting.\u003c/p\u003e","title":"Server comas1 Monday morning reboot failed"},{"content":"Manual for the BW-PC for students How to log in faster and not lose data. Introduction Regularly students complain about the time it takes to log into and out from PC’s in the computer labs. This manual explains the reason behind it and what you can do about it yourself.\nWorking with the C\u0026amp;CZ Profile and Home-disk (H:\\) In order to have your own settings (your “profile”), C\u0026amp;CZ uses three central computers, the so-called “Domain Controllers”. Your profile consists of all kind of user-specific stuff like desktop background, shortcuts on your desktop and all kinds of user-specific settings of programs (e.g.: recently opened documents in Word, recently typed commands in Matlab etc.). You can find these settings in \u0026ldquo;C:’‘/Documents and Settings/\u0026lt;inlognaam\u0026gt;/\u0026rdquo;. All of this profile is copied when you login, from the Domain Controller to your local computer because Windows needs these settings often and fast to run your prograns fast. When you logout, all changes are copied back to the Domain Controller, in order to have an up-to-date copy that is needed when you login to a different PC. Next to your profile disk space (30 MB) every user also has a Home-disk (home-directory, H:\\, ’My Documenst’) for large documents, reports, pictures etc. This drive is usually at least 200 MB large. This home-directory is *not* being copied when you log in or out, it is part of a central C\u0026amp;CZ server that is reachable through the network as (H:\\ , ‘\\\\manus\\\u0026lt;inlognaam\u0026gt;’ of ‘\\\\pluri\\\u0026lt;inlognaam\u0026gt;’).\nWhy is logging in and out so slow? If your profile is larger, more data has to be copied, so it takes longer. Your desktop is part of your profile, so if you keep lots of data on your desktop you will log in and out slowly. Because a lot of users have far too much things on their desktop (often MSN-setup, reports etc.), the Domain Controllers have to copy too much and can’t handle the load easily. This explains why ProQuota gives a warning if you have too much things on your desktop: ProQuota is meant to keep everybody happy by keeping profiles small and logging in fast.\nHow do I make it faster? The Domain Controllers are originally meant to copy just a few hundred kilobyte with shortcuts and other settings, not tens of megabytes of files. So only keep shortcuts on your desktop and clean your profile on a regular basis.\nSteps to shrink your profile:\nMove all files, directories, etc. from your desktop to your H:\\ disk (My Documents is fine too, that is the same disk)\nClean up your profile. Some directories are excluded (you do not have to clean them):\n:* C:\\Documents and Settings\\\u0026lt;loginnaam\u0026gt;\\Local Settings\n:* C:\\Documents and Settings\\\u0026lt;loginnaam\u0026gt;\\Application Data\\Sun\n:* C:\\Documents and Settings\\\u0026lt;loginnaam\u0026gt;\\Application Data\\Macromedia\n:* C:\\Documents and Settings\\\u0026lt;loginnaam\u0026gt;\\Application Data\\Allen Institute\n:* C:\\Documents and Settings\\\u0026lt;loginnaam\u0026gt;\\Application Data\\OriginLab\\Origin75E/User Files/OCTemp\nThese do not count for ProQuota too.\nBrowser Cache: Internet Explorer: Extra -\u0026gt; Internet Options -\u0026gt; Tab: General -\u0026gt; “Remove files”\nClick “Settings”(next to ‘remove files’) and drag the slider to 3 MB Firefox: Menu Extra -\u0026gt; Options -\u0026gt; Tab: Advanced -\u0026gt; Tab: Network -\u0026gt; “Clean Now”\nBuffer size 3 MB :* Clean the temporary files of Acrobat Reader, remove\nC:\\Documents and Settings\\\u0026lt;loginnaam\u0026gt;\\Application Data\\Adobe\nThis should really make a difference. It is not advised to remove random files, not all programs handle the removal of temporary files well.\n(Please leave C:\\Documents and Settings\\\u0026lt;loginnaam\u0026gt;\\Application Data\\Microsoft alone!)\nLog out NICELY. Logging out can take a long time, if your profile has changed a lot. Please let this happen, because at this moment the profile on the Domain Controllers is cleaned, which makes logging in the next time faster.\n","permalink":"https://cncz.science.ru.nl/howto/network-profile/","summary":"\u003ch1 id=\"manual-for-the-bw-pc-for-students\"\u003eManual for the BW-PC for students\u003c/h1\u003e\n\u003ch2 id=\"how-to-log-in-faster-and-not-lose-data\"\u003eHow to log in faster and not lose data.\u003c/h2\u003e\n\u003ch3 id=\"introduction\"\u003eIntroduction\u003c/h3\u003e\n\u003cp\u003eRegularly students complain about the time it takes to log into and out\nfrom PC’s in the computer labs. This manual explains the reason behind\nit and what you can do about it yourself.\u003c/p\u003e\n\u003ch3 id=\"working-with-the-ccz-profile-and-home-disk-h\"\u003eWorking with the C\u0026amp;CZ Profile and Home-disk (H:\\)\u003c/h3\u003e\n\u003cp\u003eIn order to have your own settings (your “profile”), C\u0026amp;CZ uses three\ncentral computers, the so-called “Domain Controllers”. Your profile\nconsists of all kind of user-specific stuff like desktop background,\nshortcuts on your desktop and all kinds of user-specific settings of\nprograms (e.g.: recently opened documents in Word, recently typed\ncommands in Matlab etc.). You can find these settings in \u0026ldquo;C:’‘/Documents\nand Settings/\u003ccode\u003e\u0026lt;inlognaam\u0026gt;\u003c/code\u003e/\u0026rdquo;. All of this profile is copied when\nyou login, from the Domain Controller to your local computer because\nWindows needs these settings often and fast to run your prograns fast.\nWhen you logout, all changes are copied back to the Domain Controller,\nin order to have an up-to-date copy that is needed when you login to a\ndifferent PC. Next to your profile disk space (30 MB) every user also\nhas a Home-disk (home-directory, H:\\, ’My Documenst’) for large\ndocuments, reports, pictures etc. This drive is usually at least 200 MB\nlarge. This home-directory is *not* being copied when you log in or\nout, it is part of a central C\u0026amp;CZ server that is reachable through the\nnetwork as (H:\\ , ‘\\\\manus\\\u0026lt;inlognaam\u0026gt;’ of\n‘\\\\pluri\\\u0026lt;inlognaam\u0026gt;’).\u003c/p\u003e","title":"Network profile"},{"content":"Yesterday at ca. 15:52 a SURFnet core router crashed, taking down the RU Internet connection. At 16:09 the connection was restored. This was reported yesterday on a temporary SURFnet service interruptions page and on the ISC/CIM service interruptions page. Details can be found on the SURFnet Network Tickets mailing list.\n","permalink":"https://cncz.science.ru.nl/cpk/1152/","summary":"\u003cp\u003eYesterday at ca. 15:52 a \u003ca href=\"http://www.surf.nl\" target=\"_blank\"\u003eSURFnet\u003c/a\u003e core router\ncrashed, taking down the RU Internet connection. At 16:09 the connection\nwas restored. This was reported yesterday on \u003ca href=\"http://grotestoring.surfnet.nl/\" target=\"_blank\"\u003ea temporary SURFnet\nservice interruptions page\u003c/a\u003e and on the\n\u003ca href=\"http://www.ru.nl/systeem-meldingen/\" target=\"_blank\"\u003eISC/CIM service interruptions\npage\u003c/a\u003e. Details can be found on the\n\u003ca href=\"https://list.surfnet.nl/pipermail/nettic/\" target=\"_blank\"\u003eSURFnet Network Tickets mailing\nlist\u003c/a\u003e.\u003c/p\u003e","title":"RU Internet connection down"},{"content":"After a reboot of the print server (and waiting ca. 10 minutes) printers could be attached again.\n","permalink":"https://cncz.science.ru.nl/cpk/1151/","summary":"\u003cp\u003eAfter a reboot of the print server (and waiting ca. 10 minutes) printers\ncould be attached again.\u003c/p\u003e","title":"Print server printto problems"},{"content":"As a result of a short network service interruption last night, there were some problems with obtaining ip addresses on the wireless network eduroam.\n","permalink":"https://cncz.science.ru.nl/cpk/1150/","summary":"\u003cp\u003eAs a result of a short network service interruption last night, there\nwere some problems with obtaining ip addresses on the wireless network\neduroam.\u003c/p\u003e","title":"Problems availability wireless network eduroam"},{"content":"System crashed possibly caused by an erroneous harddisk causing all CPUs to lockup.\n","permalink":"https://cncz.science.ru.nl/cpk/1149/","summary":"\u003cp\u003eSystem crashed possibly caused by an erroneous harddisk causing all CPUs\nto lockup.\u003c/p\u003e","title":"Fileserver goudsmit problems"},{"content":"The ISC has announced that on Tuesday morning, October 20, 2015 between 00:00 and 03:00 SURFnet and the ISC will perform maintenance on the connection of the RU with SURFnet/Internet. From 00:00 to 01:30 there is no connection. Between 01:30 and 03:00 short interruptions may occur. We advise to check which systems can be affected by this and if possible shift network activity to a different time slot. You also might think about systems with alerts via Internet.\n","permalink":"https://cncz.science.ru.nl/cpk/1148/","summary":"\u003cp\u003eThe \u003ca href=\"http://www.ru.nl/isc\" target=\"_blank\"\u003eISC\u003c/a\u003e has\n\u003ca href=\"http://www.ru.nl/systeem-meldingen/\" target=\"_blank\"\u003eannounced\u003c/a\u003e that on Tuesday\nmorning, October 20, 2015 between 00:00 and 03:00 SURFnet and the ISC\nwill perform maintenance on the connection of the RU with\nSURFnet/Internet. From 00:00 to 01:30 there is no connection. Between\n01:30 and 03:00 short interruptions may occur. We advise to check which\nsystems can be affected by this and if possible shift network activity\nto a different time slot. You also might think about systems with alerts\nvia Internet.\u003c/p\u003e","title":"RU Internet connection down for maintenance"},{"content":"In the morning of October 8, some KM MFPs will be switched, in order to have the faster/bigger machines at the locations where the print volume is te largest. The replacement of each machine will not take much time.\nAffected printers:\npr-hg-00-011 pr-hg-00-089 pr-hg-00-627 pr-hg-00-825 pr-hg-02-038 pr-hg-02-556 pr-hg-02-832\n","permalink":"https://cncz.science.ru.nl/cpk/1147/","summary":"\u003cp\u003eIn the morning of October 8, some KM MFPs will be switched, in order to\nhave the faster/bigger machines at the locations where the print volume\nis te largest. The replacement of each machine will not take much time.\u003c/p\u003e\n\u003cp\u003eAffected printers:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003epr-hg-00-011 pr-hg-00-089 pr-hg-00-627 pr-hg-00-825\u003c/code\u003e\n\u003ccode\u003epr-hg-02-038 pr-hg-02-556 pr-hg-02-832\u003c/code\u003e\u003c/p\u003e","title":"Konica Minolta MFPs switched"},{"content":"The server lilo4 stalled at shutdown during the monday morning reboot. Solution: power cycle. Cause currently unknown.\n","permalink":"https://cncz.science.ru.nl/cpk/1146/","summary":"\u003cp\u003eThe server lilo4 stalled at shutdown during the monday morning reboot.\nSolution: power cycle. Cause currently unknown.\u003c/p\u003e","title":"Server lilo4 Monday morning reboot failed"},{"content":"Wednesday September 30, around 4:00 p.m., Radboudumc will carry out a test by switching off the power to almost all their buildings. For the RU buildings this test has no direct effect. Liander states that switching off and on again will have no noticeable effect on the rest of the power net in Nijmegen including Radboud University. However, switching high power always has the possibility of introducing a power problem elsewhere. If research, education or any activity will be seriously hindered by a power problem, you might consider ending this activity in time or taking measures to guarantee continuity with emergency power and UPS.\n","permalink":"https://cncz.science.ru.nl/cpk/1145/","summary":"\u003cp\u003eWednesday September 30, around 4:00 p.m., Radboudumc will carry out a\n\u003ca href=\"http://www.radboudnet.nl/actueel/nieuws/@1012772/noodstroomtest/\" target=\"_blank\"\u003etest by switching off the power to almost all their\nbuildings\u003c/a\u003e.\nFor the RU buildings this test has no direct effect.\n\u003ca href=\"http://www.liander.nl/\" target=\"_blank\"\u003eLiander\u003c/a\u003e states that switching off and on again\nwill have no noticeable effect on the rest of the power net in Nijmegen\nincluding Radboud University. However, switching high power always has\nthe possibility of introducing a power problem elsewhere. If research,\neducation or any activity will be seriously hindered by a power problem,\nyou might consider ending this activity in time or taking measures to\nguarantee continuity with emergency power and UPS.\u003c/p\u003e","title":"Radboudumc buildings power switched off for test"},{"content":"Saturday September 12, between 9:00 a.m. and 1:00 p.m., maintenance work will be conducted on the network router at the Faculty of Science and a number of server switches in C\u0026amp;CZ data centers. This means that between these points in time, a few brief network interruptions with a duration of approximately 1 minute will occur. Many FNWI servers will be unreachable at those moments. The Mitel IP phones will also go out of service momentarily several times. All other phones, however, will continue to operate normally. The maintenance work is necessary to enable resumption of the IP telephony rollout at the Faculty of Science. For further information, please contact netmaster@science.ru.nl.\n","permalink":"https://cncz.science.ru.nl/cpk/1144/","summary":"\u003cp\u003eSaturday September 12, between 9:00 a.m. and 1:00 p.m., maintenance work\nwill be conducted on the network router at the Faculty of Science and a\nnumber of server switches in C\u0026amp;CZ data centers. This means that between\nthese points in time, a few brief network interruptions with a duration\nof approximately 1 minute will occur. Many FNWI servers will be\nunreachable at those moments. The Mitel IP phones will also go out of\nservice momentarily several times. All other phones, however, will\ncontinue to operate normally. The maintenance work is necessary to\nenable resumption of the IP telephony rollout at the Faculty of Science.\nFor further information, please contact\n\u003ca href=\"/howto/contact/\"\u003enetmaster@science.ru.nl\u003c/a\u003e.\u003c/p\u003e","title":"Brief network interruptions at FNWI"},{"content":"This morning we came to know that mails to mailing lists were not accepted by the mailing list server. The reason was a change that was made last Friday because of the new smtp server mid July. After correcting the change, mails were accepted again.\n","permalink":"https://cncz.science.ru.nl/cpk/1143/","summary":"\u003cp\u003eThis morning we came to know that mails to mailing lists were not\naccepted by the mailing list server. The reason was a change that was\nmade last Friday because of the new smtp server mid July. After\ncorrecting the change, mails were accepted again.\u003c/p\u003e","title":"Mailman mailing list problem"},{"content":"During the move this weekend of network shares to a new server, an administrative error was made, that prevented the server from rebooting ok. After correcting this, the server booted ok.\nAffected network disks:\nacs4 afric afstud afstudeerwerk afstudTest albert bin bioalg bioexamencie bko BKO-TEMPLATE ccz cczhelpdesk cczsecr celbio2 celbio3 CuDoTest CURSUS cursusdossiers diafragma ecogen ecologie embdata evsf2data10 evsf2data15 evsf2data16 evsf2data17 evsf2data18 evsf2data19 evsf2data7 evsf2data8 evsf2data9 fsr geminstr grafting honours huckgroup hybrids ifl-d1 imappdir imappsecr immbureau iobw kolkteaching localdist logs mbaudit3 mbbioel2 mbonderwijs mbsynid micro-bulk1 micro-bulk2 micro-labmembers milkun8 milkun9 mlf90 mlfalgemeen mlfsec molchem3 morph mpcoldmollab mppstaf nmr500data nmrspectra olcbiocie olcbiowetenschappen orgdier owc1 parp petseq project1mpp seq snn3 snn4 soheto studiereis2013 sucudo-transfer tf2devices tracegas unl vcbio_prive vergader vsc16\n","permalink":"https://cncz.science.ru.nl/cpk/1142/","summary":"\u003cp\u003eDuring the move this weekend of network shares to a new server, an\nadministrative error was made, that prevented the server from rebooting\nok. After correcting this, the server booted ok.\u003c/p\u003e\n\u003cp\u003eAffected network disks:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eacs4 afric afstud afstudeerwerk afstudTest albert\u003c/code\u003e\n\u003ccode\u003ebin bioalg bioexamencie bko BKO-TEMPLATE ccz cczhelpdesk cczsecr celbio2 celbio3 CuDoTest CURSUS\u003c/code\u003e\n\u003ccode\u003ecursusdossiers diafragma ecogen ecologie embdata evsf2data10 evsf2data15 evsf2data16 evsf2data17\u003c/code\u003e\n\u003ccode\u003eevsf2data18 evsf2data19 evsf2data7 evsf2data8 evsf2data9 fsr geminstr grafting honours huckgroup\u003c/code\u003e\n\u003ccode\u003ehybrids ifl-d1 imappdir imappsecr immbureau iobw kolkteaching localdist logs mbaudit3 mbbioel2\u003c/code\u003e\n\u003ccode\u003embonderwijs mbsynid micro-bulk1 micro-bulk2 micro-labmembers milkun8 milkun9 mlf90 mlfalgemeen\u003c/code\u003e\n\u003ccode\u003emlfsec molchem3 morph mpcoldmollab mppstaf nmr500data nmrspectra olcbiocie olcbiowetenschappen\u003c/code\u003e\n\u003ccode\u003eorgdier owc1 parp petseq project1mpp seq snn3 snn4 soheto studiereis2013 sucudo-transfer tf2devices\u003c/code\u003e\n\u003ccode\u003etracegas unl vcbio_prive vergader vsc16\u003c/code\u003e\u003c/p\u003e","title":"Network shares unavailable after reboot"},{"content":"Since 14:00 this afternoon it’s not possible to reach phones outside the campus. Also, only external phones on the KPN network and cell phones from all providers can reach the campus.\nFor central RU service interruptions and planned maintenance, see the combined ISC/CIM interruptions page.\n","permalink":"https://cncz.science.ru.nl/cpk/1140/","summary":"\u003cp\u003eSince 14:00 this afternoon it’s not possible to reach phones outside the\ncampus. Also, only external phones on the KPN network and cell phones\nfrom all providers can reach the campus.\u003c/p\u003e\n\u003cp\u003eFor central RU service interruptions and planned maintenance, see the\n\u003ca href=\"http://www.ru.nl/systeem-meldingen/?id=172\u0026amp;lang=nl\u0026amp;tg=0\u0026amp;f=0\" target=\"_blank\"\u003ecombined ISC/CIM interruptions\npage\u003c/a\u003e.\u003c/p\u003e","title":"Interruption public telephone network"},{"content":"A leak above the KM MFP hg PR-03-825 made this fail beyond repair. We hope to resolve this by replacing it by a little-used KM MFP of the same type.\n","permalink":"https://cncz.science.ru.nl/cpk/1141/","summary":"\u003cp\u003eA leak above the KM MFP hg PR-03-825 made this fail beyond repair. We\nhope to resolve this by replacing it by a little-used KM MFP of the same\ntype.\u003c/p\u003e","title":"Water damage for pr-hg-03-825"},{"content":"Starting from 8:45h, the network disks will not be available during a migration to a new server.\nAffected disks:\n45t, acfiles2, acs4, afric, afstud, afstudeerwerk, afstudTest, albert, arb, bbb-priv, bin, bioalg, bioexamencie, birds, bko, botany-general, bsweet, carta, ccs4, ccz, cczhelpdesk, cczsecr, celbio2, celbio3, CuDoTest, cursus, cursusdossiers, dcnadmin, diafragma, ecogen, ecologie, embdata, evsf2data10, evsf2data15, evsf2data16, evsf2data17, evsf2data18, evsf2data19, evsf2data7, evsf2data8, evsf2data9, exoarchief, flaredisc, fsr, geminstr, gi1, gi3, gipsy, grafting, hfml-data, hfml-engineering, hfml-secr, honours, huckgroup, hybrids, icissec, ifl, ifl-d1, imappdir, imappdir, imappsecr, immbureau, iobw, iris, itt, iwwr1, kolkteaching, lambiek, localdist, logs, mailmanincludes, mbaudit3, mbbioel, mbbioel2, mbcns, mbcortex, mbonderwijs, mb-read-write, mbsynid, mercator, mestrelab, mi1, mi3, micro-bulk1, micro-bulk2, micro-labmembers, milkun4, milkun4rw, milkun8, milkun9, mlf90, mlfalgemeen, mlfsec, molchem, molchem2, molchem3, molphtec, mol-secr, morph, mpcoldmollab, mppstaf, multimedia, neuropi, nmr500data, nmrspectra, nskpromo, olcbiocie, olcbiowetenschappen, ons, orgdier, owc, owc1, parp, pcb, petseq, plantkunde-hgl, practica, project1mpp, rotax, seq, smol, snn, snn2, snn3, snn4, soheto, sos, spmdata1, SSNMR1, studiereis2013, sucudo-transfer, tcbackup, tcscratch, tece, teceleiding, tf2devices, thchem, tracegas, tracegastemp, tracelab, tracelabdb, unl, vcbio_prive, vergader, vsc16, vscxray, wikis, wiskundetoernooi en zeegras\n","permalink":"https://cncz.science.ru.nl/cpk/1139/","summary":"\u003cp\u003eStarting from 8:45h, the network disks will not be available during a\nmigration to a new server.\u003c/p\u003e\n\u003cp\u003eAffected disks:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003e45t, acfiles2, acs4, afric, afstud, afstudeerwerk,\u003c/code\u003e\n\u003ccode\u003eafstudTest, albert, arb, bbb-priv, bin, bioalg, bioexamencie, birds, bko, botany-general,\u003c/code\u003e\n\u003ccode\u003ebsweet, carta, ccs4, ccz, cczhelpdesk, cczsecr, celbio2, celbio3, CuDoTest, cursus,\u003c/code\u003e\n\u003ccode\u003ecursusdossiers, dcnadmin, diafragma, ecogen, ecologie, embdata, evsf2data10, evsf2data15,\u003c/code\u003e\n\u003ccode\u003eevsf2data16, evsf2data17, evsf2data18, evsf2data19, evsf2data7, evsf2data8, evsf2data9,\u003c/code\u003e\n\u003ccode\u003eexoarchief, flaredisc, fsr, geminstr, gi1, gi3, gipsy, grafting, hfml-data, hfml-engineering,\u003c/code\u003e\n\u003ccode\u003ehfml-secr, honours, huckgroup, hybrids, icissec, ifl, ifl-d1, imappdir, imappdir, imappsecr,\u003c/code\u003e\n\u003ccode\u003eimmbureau, iobw, iris, itt, iwwr1, kolkteaching, lambiek, localdist, logs, mailmanincludes,\u003c/code\u003e\n\u003ccode\u003embaudit3, mbbioel, mbbioel2, mbcns, mbcortex, mbonderwijs, mb-read-write, mbsynid, mercator,\u003c/code\u003e\n\u003ccode\u003emestrelab, mi1, mi3, micro-bulk1, micro-bulk2, micro-labmembers, milkun4, milkun4rw, milkun8,\u003c/code\u003e\n\u003ccode\u003emilkun9, mlf90, mlfalgemeen, mlfsec, molchem, molchem2, molchem3, molphtec, mol-secr, morph,\u003c/code\u003e\n\u003ccode\u003empcoldmollab, mppstaf, multimedia, neuropi, nmr500data, nmrspectra, nskpromo, olcbiocie,\u003c/code\u003e\n\u003ccode\u003eolcbiowetenschappen, ons, orgdier, owc, owc1, parp, pcb, petseq, plantkunde-hgl, practica,\u003c/code\u003e\n\u003ccode\u003eproject1mpp, rotax, seq, smol, snn, snn2, snn3, snn4, soheto, sos, spmdata1, SSNMR1,\u003c/code\u003e\n\u003ccode\u003estudiereis2013, sucudo-transfer, tcbackup, tcscratch, tece, teceleiding, tf2devices, thchem,\u003c/code\u003e\n\u003ccode\u003etracegas, tracegastemp, tracelab, tracelabdb, unl, vcbio_prive, vergader, vsc16, vscxray,\u003c/code\u003e\n\u003ccode\u003ewikis, wiskundetoernooi en zeegras\u003c/code\u003e\u003c/p\u003e","title":"Network shares unavailable during migration"},{"content":"The server vos will receive extra disks and need to be reconfigured. Virtual clients gitlab3, redmine2 and smtp2 will be offline during maintenance.\n","permalink":"https://cncz.science.ru.nl/cpk/1138/","summary":"\u003cp\u003eThe server vos will receive extra disks and need to be reconfigured.\nVirtual clients gitlab3, redmine2 and smtp2 will be offline during\nmaintenance.\u003c/p\u003e","title":"Server vos (gitlab3/redmine2/smtp2) preventive maintenance"},{"content":"Starting from 8:45h, the network disks will not be available during a migration to a new server.\nAffected disks:\nacfiles, aerochem, amsbackup, amscommon, beevee, bfac-backup, bio-orgchem, bioniccell, carisma, chemprac, csg-staf, csgi-archief, desda, ds, ehef1, ehef2, ehef3, geminstr2, giphouse, gissig, gmi, hfml-backup2, highres, impuls, introcie, isis, janvanhest, kaartenbak, kangoeroe, mbaudit1, microbiology, microbiology2, milkun2, milkun3, milkun5, milkun6, milkun7, milkun7rw, molbiol, mwstudiereis, neuroinf, neuroinf2, nfstest, nwibackup, olympus, puc, ruversatest, secres2, secrmolbiol, sigma, sigmacies, spectra, spm, spmdata3, spmdata4, spmdata5, spmdata6, spmdata7, spmmagstm, spmnanolab, spmstaff, ssi, staff-hfml, stroom, thalia, ucm, vsc, vsc1, vsc10, vsc11, vsc12, vsc13, vsc14, vsc15, vsc2, vsc3, vsc4, vsc5, vsc6, vsc7, vsc8, vsc9, vscadmin, wiskalg, wiskunde en wkru.\n","permalink":"https://cncz.science.ru.nl/cpk/1136/","summary":"\u003cp\u003eStarting from 8:45h, the network disks will not be available during a\nmigration to a new server.\u003c/p\u003e\n\u003cp\u003eAffected disks:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eacfiles, aerochem, amsbackup, amscommon,\u003c/code\u003e\n\u003ccode\u003ebeevee, bfac-backup, bio-orgchem, bioniccell, carisma, chemprac, csg-staf,\u003c/code\u003e\n\u003ccode\u003ecsgi-archief, desda, ds, ehef1, ehef2, ehef3, geminstr2, giphouse, gissig,\u003c/code\u003e\n\u003ccode\u003egmi, hfml-backup2, highres, impuls, introcie, isis, janvanhest, kaartenbak,\u003c/code\u003e\n\u003ccode\u003ekangoeroe, mbaudit1, microbiology, microbiology2, milkun2, milkun3, milkun5,\u003c/code\u003e\n\u003ccode\u003emilkun6, milkun7, milkun7rw, molbiol, mwstudiereis, neuroinf, neuroinf2, nfstest,\u003c/code\u003e\n\u003ccode\u003enwibackup, olympus, puc, ruversatest, secres2, secrmolbiol, sigma, sigmacies,\u003c/code\u003e\n\u003ccode\u003espectra, spm, spmdata3, spmdata4, spmdata5, spmdata6, spmdata7, spmmagstm,\u003c/code\u003e\n\u003ccode\u003espmnanolab, spmstaff, ssi, staff-hfml, stroom, thalia, ucm, vsc, vsc1, vsc10,\u003c/code\u003e\n\u003ccode\u003evsc11, vsc12, vsc13, vsc14, vsc15, vsc2, vsc3, vsc4, vsc5, vsc6, vsc7, vsc8,\u003c/code\u003e\n\u003ccode\u003evsc9, vscadmin, wiskalg, wiskunde en wkru.\u003c/code\u003e\u003c/p\u003e","title":"Network shares temporary not available during migration"},{"content":"After the server reboot on Monday morning, the changes to the home directories of the last two weeks had disappeared. It is still not clear how this could have happened. The backups of Saturday June 13 22:55 have been restored.\n","permalink":"https://cncz.science.ru.nl/cpk/1135/","summary":"\u003cp\u003eAfter the server reboot on Monday morning, the changes to the home\ndirectories of the last two weeks had disappeared. It is still not clear\nhow this could have happened. The backups of Saturday June 13 22:55 have\nbeen restored.\u003c/p\u003e","title":"Server homedcc had old homes after reboot"},{"content":"Starting a month ago, mail programs could get an update due to the vulnerability for a LogJam attack. After this update these programs refused connections with a server with a too short key. The old C\u0026amp;CZ authenticated SMTP server had such a short key. Users who reported this problem (with the latest versions of Pine, Thunderbird and recently also Apple Mail), were advised to temporarily use an alternative server. As of today using this alternative server is no longer necessary, because the server smtp.science.ru.nl has been replaced by a new server.\n","permalink":"https://cncz.science.ru.nl/cpk/1137/","summary":"\u003cp\u003eStarting a month ago, mail programs could get an update due to the\nvulnerability for a \u003ca href=\"https://weakdh.org/\" target=\"_blank\"\u003eLogJam\u003c/a\u003e attack. After this\nupdate these programs refused connections with a server with a too short\nkey. The old C\u0026amp;CZ \u003ca href=\"/howto/email#outgoing-email\"\u003eauthenticated SMTP server\u003c/a\u003e\nhad such a short key. Users who reported this problem (with the latest\nversions of Pine, Thunderbird and recently also Apple Mail), were\nadvised to temporarily use an alternative server. As of today using this\nalternative server is no longer necessary, because the server\nsmtp.science.ru.nl has been replaced by a new server.\u003c/p\u003e","title":"SMTP server problem because of too short keys"},{"content":"A short power dip interrupted desktop computers and some network switches without UPS backup power on the RU campus. It took approx. 20 minutes before the affected switches became fully operational again. A network switch at the Transitorium reported a failed module until it was reset around 8:30 am on Friday morning. For ca. 46 outlets/users the network didn’t function until 8:40. The UVB reported as cause a cable cut at the Kapittelweg. Liander reports a power disturbance an hour later at that location.\n","permalink":"https://cncz.science.ru.nl/cpk/1134/","summary":"\u003cp\u003eA short power dip interrupted desktop computers and some network\nswitches without UPS backup power on the RU campus. It took approx. 20\nminutes before the affected switches became fully operational again. A\nnetwork switch at the Transitorium reported a failed module until it was\nreset around 8:30 am on Friday morning. For ca. 46 outlets/users the\nnetwork didn’t function until 8:40. The \u003ca href=\"http://www.ru.nl/uvb\" target=\"_blank\"\u003eUVB\u003c/a\u003e\nreported as cause a cable cut at the Kapittelweg. Liander reports a\n\u003ca href=\"https://www.liander.nl/storingen/overzicht/storing?storingsnummer=3963192\" target=\"_blank\"\u003epower disturbance an hour\nlater\u003c/a\u003e\nat that location.\u003c/p\u003e","title":"Services unavailable due to power outage"},{"content":"Resolved by a server reboot.\n","permalink":"https://cncz.science.ru.nl/cpk/1133/","summary":"\u003cp\u003eResolved by a server reboot.\u003c/p\u003e","title":"Fileserver tcmr problems"},{"content":"The server (cn99) which serviced SUN Grid Engine on Ubuntu 10.04 is no more. It could not find its disks while booting. This will not be solved because the machine is already more than five years old. Clusternodes cn67, cn74, cn75 and cn81 are influenced. They can still be used by logging into them directly.\n","permalink":"https://cncz.science.ru.nl/cpk/1132/","summary":"\u003cp\u003eThe server (cn99) which serviced SUN Grid Engine on Ubuntu 10.04 is no\nmore. It could not find its disks while booting. This will not be solved\nbecause the machine is already more than five years old. Clusternodes\ncn67, cn74, cn75 and cn81 are influenced. They can still be used by\nlogging into them directly.\u003c/p\u003e","title":"Ubuntu 10.04 cluster / cn99 server problem"},{"content":"A configuration error caused the automatic installation of an older version of GitLab (7.7.1) over the the most recent version (7.11.4). Because the GitLab version did not correspond to the state of the underlying database, what caused multiple problems. Among which the gitlab shell for ssh access and inaccessibility of some parts of the web interface. The problems were solved after upgrading to version 7.11.4.\n","permalink":"https://cncz.science.ru.nl/cpk/1131/","summary":"\u003cp\u003eA configuration error caused the automatic installation of an older\nversion of GitLab (7.7.1) over the the most recent version (7.11.4).\nBecause the GitLab version did not correspond to the state of the\nunderlying database, what caused multiple problems. Among which the\ngitlab shell for ssh access and inaccessibility of some parts of the web\ninterface. The problems were solved after upgrading to version 7.11.4.\u003c/p\u003e","title":"GitLab server problems"},{"content":"Today the license server booted without configuring the network. The cause of the problem was an error in a configuration file. This has been corrected.\nAffected licenses:\nAltera Ansys Accelrys Genesys Hdlworks Idapro Xilinx IntelCompiler Ingr Maple Mathematica Matlab MentorGraphics Mestrelab Topspin Orcad Originlab\n","permalink":"https://cncz.science.ru.nl/cpk/1130/","summary":"\u003cp\u003eToday the license server booted without configuring the network. The\ncause of the problem was an error in a configuration file. This has been\ncorrected.\u003c/p\u003e\n\u003cp\u003eAffected licenses:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eAltera Ansys Accelrys Genesys Hdlworks Idapro\u003c/code\u003e\n\u003ccode\u003eXilinx IntelCompiler Ingr Maple Mathematica Matlab MentorGraphics Mestrelab\u003c/code\u003e\n\u003ccode\u003eTopspin Orcad Originlab\u003c/code\u003e\u003c/p\u003e","title":"License server reboot problem"},{"content":"The IMAP server will be replaced by a new server next Monday night. During the night, no Science mail can be read from the server, because then the most recent mails will be synchronized to the new server. Mail can be sent in this period, but new mail will start being delivered on the new server from 07:30. A word of warning, one could login on the old server with the first 8 characters of the password, the new server only accepts the full password.\n","permalink":"https://cncz.science.ru.nl/cpk/1129/","summary":"\u003cp\u003eThe IMAP server will be replaced by a new server next Monday night.\nDuring the night, no Science mail can be read from the server, because\nthen the most recent mails will be synchronized to the new server. Mail\ncan be sent in this period, but new mail will start being delivered on\nthe new server from 07:30. A word of warning, one could login on the old\nserver with the first 8 characters of the password, the new server only\naccepts the full password.\u003c/p\u003e","title":"IMAP mail server upgrade next monday night"},{"content":"The configurations in the network switches in the buildings/floors/locations mentioned above, will be replaced. This means that both wired en wireless networks at these locations will be interrupted and network traffic will not be possible.\n","permalink":"https://cncz.science.ru.nl/cpk/1128/","summary":"\u003cp\u003eThe configurations in the network switches in the\nbuildings/floors/locations mentioned above, will be replaced. This means\nthat both wired en wireless networks at these locations will be\ninterrupted and network traffic will not be possible.\u003c/p\u003e","title":"Network maintenance in Huygens wing 8"},{"content":"Due to a configuration fault in a C\u0026amp;CZ server switch it became unreachable. Therefore some servers and services were unreachable as well (nameserver, mail etc). After a quick fix the systems were up and running again.\n","permalink":"https://cncz.science.ru.nl/cpk/1127/","summary":"\u003cp\u003eDue to a configuration fault in a C\u0026amp;CZ server switch it became\nunreachable. Therefore some servers and services were unreachable as\nwell (nameserver, mail etc). After a quick fix the systems were up and\nrunning again.\u003c/p\u003e","title":"Network switch problem"},{"content":"Saturday morning, during maintenance by UVB and Liander, there were a few short unintended power dips in the Huygens building. A large part of the network switches does not have a UPS and thus restarted. After 09:11 all switches were operational again.\nBackground: January 10 and 17, maintenance has been carried out on the power transformers in the Huygens building. This work should be carried out once every 5 years. Because a power failure of 6-8 hours (duration of maintenance) is unacceptable for the Faculty of Science, last year bypasses have been constructed, to make the transformers able to replace each other. Beforehand, the chance that a power failure should occur, was thought to be particularly small. The next time such a service is planned, in 2020, everyone will be informed in advance.\n","permalink":"https://cncz.science.ru.nl/cpk/1126/","summary":"\u003cp\u003eSaturday morning, during maintenance by \u003ca href=\"http://www.ru.nl/uvb\" target=\"_blank\"\u003eUVB\u003c/a\u003e and\n\u003ca href=\"https://www.liander.nl/\" target=\"_blank\"\u003eLiander\u003c/a\u003e, there were a few short unintended\npower dips in the Huygens building. A large part of the network switches\ndoes not have a\n\u003ca href=\"http://en.wikipedia.org/wiki/Uninterruptible_power_supply\" target=\"_blank\"\u003eUPS\u003c/a\u003e and\nthus restarted. After 09:11 all switches were operational again.\u003c/p\u003e\n\u003cp\u003eBackground: January 10 and 17, maintenance has been carried out on the\npower transformers in the Huygens building. This work should be carried\nout once every 5 years. Because a power failure of 6-8 hours (duration\nof maintenance) is unacceptable for the Faculty of Science, last year\nbypasses have been constructed, to make the transformers able to replace\neach other. Beforehand, the chance that a power failure should occur,\nwas thought to be particularly small. The next time such a service is\nplanned, in 2020, everyone will be informed in advance.\u003c/p\u003e","title":"Power dip Huygens building Saturday, January 17"},{"content":"The license server still runs Ubuntu 10.04. This means that in a few months it would not receive security updates. Furthermore we want to use this server for DNS/DNSSEC/DHCP-service, which makes Ubuntu 14.04 necessary. Because this is a license server, we cannot switch to a new server, but we will place disks with the new OS in the existing server. Because this only means a small amount of downtime, users will hardly notice.\n","permalink":"https://cncz.science.ru.nl/cpk/1125/","summary":"\u003cp\u003eThe license server still runs Ubuntu 10.04. This means that in a few\nmonths it would not receive security updates. Furthermore we want to use\nthis server for DNS/DNSSEC/DHCP-service, which makes Ubuntu 14.04\nnecessary. Because this is a license server, we cannot switch to a new\nserver, but we will place disks with the new OS in the existing server.\nBecause this only means a small amount of downtime, users will hardly\nnotice.\u003c/p\u003e","title":"Upgrade of license server"},{"content":"Resolved by a server reboot.\nAffected disks:\nacfiles beevee bioniccell bio-orgchem celbio1 celbio2 chemprac csgi-archief csg-projecten csg-staf desda ds ehef1 ehef2 ehef3 femtospin geminstr2 giphouse gissig gmi hfml-backup hfml-backup2 hfml-backup-inst highres impuls introcie isis janvanhest kaartenbak kangoeroe mathsolcie microbiology microbiology2 milkun2 milkun2RenD milkun3 milkun5 milkun6 milkun7 milkun7rw molbiol mwstudiereis neuroinf neuroinf2 olympus puc randomwalkmodel secres2 sigma sigmacies spectra spectra-rw spm spmdata3 spmdata4 spmdata5 spmdata6 spmdata7 spmstaff ssi staff-hfml stroom thalia ucm vsc vsc1 vsc10 vsc11 vsc12 vsc13 vsc14 vsc15 vsc2 vsc3 vsc4 vsc5 vsc6 vsc7 vsc8 vsc9 vscadmin wiskalg wiskunde wkru\n","permalink":"https://cncz.science.ru.nl/cpk/1124/","summary":"\u003cp\u003eResolved by a server reboot.\u003c/p\u003e\n\u003cp\u003eAffected disks:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eacfiles beevee bioniccell bio-orgchem celbio1 celbio2\u003c/code\u003e\n\u003ccode\u003echemprac csgi-archief csg-projecten csg-staf desda ds ehef1\u003c/code\u003e\n\u003ccode\u003eehef2 ehef3 femtospin geminstr2 giphouse gissig gmi hfml-backup hfml-backup2 hfml-backup-inst highres impuls\u003c/code\u003e\n\u003ccode\u003eintrocie isis janvanhest kaartenbak kangoeroe mathsolcie microbiology microbiology2\u003c/code\u003e\n\u003ccode\u003emilkun2 milkun2RenD milkun3 milkun5 milkun6 milkun7 milkun7rw\u003c/code\u003e\n\u003ccode\u003emolbiol mwstudiereis neuroinf neuroinf2 olympus puc randomwalkmodel secres2 sigma sigmacies spectra spectra-rw\u003c/code\u003e\n\u003ccode\u003espm spmdata3 spmdata4 spmdata5 spmdata6 spmdata7 spmstaff ssi staff-hfml stroom thalia ucm vsc\u003c/code\u003e\n\u003ccode\u003evsc1 vsc10 vsc11 vsc12 vsc13 vsc14 vsc15 vsc2 vsc3 vsc4 vsc5 vsc6 vsc7 vsc8 vsc9 vscadmin wiskalg wiskunde wkru\u003c/code\u003e\u003c/p\u003e","title":"Fileserver bulk problems"},{"content":"There was again a problem with another harddisk of the IMAP server. This made the server unusable. A reboot solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1123/","summary":"\u003cp\u003eThere was again a problem with another harddisk of the IMAP server. This\nmade the server unusable. A reboot solved the problem.\u003c/p\u003e","title":"Again IMAP mail server problem"},{"content":"The IMAP server got overloaded again which could not be due to user usage. The server was rebooted since all I/O processing was stopped and we could not kill any processes. Snapshots have now been completely disabled. It took quite some time before the server had all disks and filesystems in working order.\n","permalink":"https://cncz.science.ru.nl/cpk/1122/","summary":"\u003cp\u003eThe IMAP server got overloaded again which could not be due to user\nusage. The server was rebooted since all I/O processing was stopped and\nwe could not kill any processes. Snapshots have now been completely\ndisabled. It took quite some time before the server had all disks and\nfilesystems in working order.\u003c/p\u003e","title":"IMAP mail server problem"},{"content":"There was a problem with a failed harddisk of the IMAP server. This slowed the machine down so that it was practically unusable. The problem was solved by replacing the disk.\n","permalink":"https://cncz.science.ru.nl/cpk/1121/","summary":"\u003cp\u003eThere was a problem with a failed harddisk of the IMAP server. This\nslowed the machine down so that it was practically unusable. The problem\nwas solved by replacing the disk.\u003c/p\u003e","title":"IMAP mail server problem"},{"content":"As reported by the ISC, the RU was victim of a DDOS attack. As a consequence of this is the connection to the Internet was interrupted. Measures have been taken to prevent a similar attack having this result in the future.\n","permalink":"https://cncz.science.ru.nl/cpk/1120/","summary":"\u003cp\u003eAs \u003ca href=\"http://www.ru.nl/systeem-meldingen/\" target=\"_blank\"\u003ereported by the ISC\u003c/a\u003e, the RU\nwas victim of a DDOS attack. As a consequence of this is the connection\nto the Internet was interrupted. Measures have been taken to prevent a\nsimilar attack having this result in the future.\u003c/p\u003e","title":"Network problem RU"},{"content":"The network switches in the buildings/floors/locations mentioned above will be replaced. This means that both wired en wireless networks at these locations will be interrupted and network traffic will not be possible. This includes the network for access control, climate control etc.\n","permalink":"https://cncz.science.ru.nl/cpk/1118/","summary":"\u003cp\u003eThe network switches in the buildings/floors/locations mentioned above\nwill be replaced. This means that both wired en wireless networks at\nthese locations will be interrupted and network traffic will not be\npossible. This includes the network for access control, climate control\netc.\u003c/p\u003e","title":"Network maintenance in Mercator III south and low-rise buildings"},{"content":"The server nachtwacht reports having a hard drive that will soon fail. We will replace the disk as soon as possible.\n","permalink":"https://cncz.science.ru.nl/cpk/1117/","summary":"\u003cp\u003eThe server nachtwacht reports having a hard drive that will soon fail.\nWe will replace the disk as soon as possible.\u003c/p\u003e","title":"Server nachtwacht preventive maintenance"},{"content":"The server that acts within FNWI as first DNS resolver crashed, probably because of a disk becoming defective. This made the network slow or even virtually unusable for a lot of computers in FNWI. Only after a reboot of the server, the problem1 was solved. Monday morning, at the weekly reboot of this server, it would only boot after manually acknowledging the defective disk (problem2), When other servers rebooted at 06:30, a lot of them had problems due to the missing DNS resolver. Further measures to reduce the inconvenience of such a crash have been taken. The move to new DNS servers is in preparation.\n","permalink":"https://cncz.science.ru.nl/cpk/1116/","summary":"\u003cp\u003eThe server that acts within FNWI as first \u003ca href=\"http://en.wikipedia.org/wiki/Domain_Name_System#DNS_resolvers\" target=\"_blank\"\u003eDNS\nresolver\u003c/a\u003e\ncrashed, probably because of a disk becoming defective. This made the\nnetwork slow or even virtually unusable for a lot of computers in FNWI.\nOnly after a reboot of the server, the problem1 was solved. Monday\nmorning, at the weekly reboot of this server, it would only boot after\nmanually acknowledging the defective disk (problem2), When other servers\nrebooted at 06:30, a lot of them had problems due to the missing DNS\nresolver. Further measures to reduce the inconvenience of such a crash\nhave been taken. The move to new DNS servers is in preparation.\u003c/p\u003e","title":"DNS resolver problem"},{"content":"T-disk On pc’s in computer labs which are managed by C\u0026amp;CZ, not only the S-disk is available but also the T-disk (a network share). On this network share, a large number of programs for a large number of courses is available that can be run directly from this share (no local installation on the pc necessary). Lecturers can manage the course software themselves. These programs may also be used on pc’s that are not managed by C\u0026amp;CZ.\n[[netwerkschijf|Attach the network share] as \\\\cursus-srv.science.ru.nl\\cursus using Drive letter T because some software depends on this letter to be T.\nCheck “Reconnect at logon” for your convenience.\n","permalink":"https://cncz.science.ru.nl/howto/t-schijf/","summary":"\u003ch2 id=\"t-disk\"\u003eT-disk\u003c/h2\u003e\n\u003cp\u003eOn \u003ca href=\"/howto/windows-beheerde-werkplek/\"\u003epc’s in computer labs\u003c/a\u003e which are managed by\nC\u0026amp;CZ, not only the \u003ca href=\"/howto/s-schijf/\"\u003eS-disk\u003c/a\u003e is available but also\nthe T-disk (a \u003ca href=\"/howto/netwerkschijf/\"\u003enetwork share\u003c/a\u003e). On this network\nshare, a large number of programs for a large number of courses is\navailable that can be run directly from this share (no local\ninstallation on the pc necessary). Lecturers can manage the course\nsoftware themselves. These programs may also be used on pc’s that are\nnot managed by C\u0026amp;CZ.\u003c/p\u003e","title":"T-schijf"},{"content":"S-disk On pc’s managed by C\u0026amp;CZ the S-disk (a network share) is available by default. On this share a large number of programs is available that can be run directly form this share (no local installation needed). These programs can also be used on pc’s not managed by C\u0026amp;CZ.\nAttach the network share as \\\\software-srv.science.ru.nl\\software using Drive letter S because some software might depend on the driveletter S.\n","permalink":"https://cncz.science.ru.nl/howto/s-schijf/","summary":"\u003ch2 id=\"s-disk\"\u003eS-disk\u003c/h2\u003e\n\u003cp\u003eOn \u003ca href=\"/howto/windows-beheerde-werkplek/\"\u003epc’s managed by C\u0026amp;CZ\u003c/a\u003e the S-disk (a\n\u003ca href=\"/howto/netwerkschijf/\"\u003enetwork share\u003c/a\u003e) is available by default. On\nthis share a large number of programs is available that can be run\ndirectly form this share (no local installation needed). These programs\ncan also be used on pc’s not managed by C\u0026amp;CZ.\u003c/p\u003e\n\u003cp\u003eAttach the \u003ca href=\"/howto/netwerkschijf/\"\u003enetwork share\u003c/a\u003e as\n\u003cstrong\u003e\\\\software-srv.science.ru.nl\\software\u003c/strong\u003e using Drive letter S\nbecause some software might depend on the driveletter S.\u003c/p\u003e","title":"S-schijf"},{"content":"Pine Use ‘S’ for SETUP and then’C\u0026quot; for Config and fill in:\nsmtp-server = smtp.science.ru.nl/user=... inbox-path = {post.science.ru.nl/ssl/user=...}INBOX where … should be replaced by your login name\nTo see the other IMAP folders, use ‘S\u0026quot; for SETUP and then ’C’ for Config and change:\n[ Folder Preferences ] [X] combined-folder-display [X] expanded-view-of-folders [X] quell-empty-directories Ook nog binnen SETUP: kies ‘L’ voor collectionLists en maak met ‘A’ twee nieuwe collection lists:\nNickname : Personal folders Server : post.science.ru.nl/ssl/user=... Path : INBOX. View : (close with control-X)\n[and]\nNickname : Shared folders Server : post.science.ru.nl/ssl/user=... Path : user. View : (close with control-X)\nIf you remove the default Mail/ collection list, then all sent mail will be\nautomatically stored in a folder on post.science.ru.nl.\n","permalink":"https://cncz.science.ru.nl/howto/pine/","summary":"\u003ch3 id=\"pine\"\u003ePine\u003c/h3\u003e\n\u003cp\u003eUse ‘S’\nfor SETUP and then’C\u0026quot; for Config and fill in:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003e smtp-server = smtp.science.ru.nl/user=...\n inbox-path = {post.science.ru.nl/ssl/user=...}INBOX\n\u003c/code\u003e\u003c/pre\u003e\n\u003cp\u003ewhere … should be replaced by your login\nname\u003c/p\u003e\n\u003cp\u003eTo see the other IMAP folders, use ‘S\u0026quot; for SETUP and then ’C’ for Config\nand change:\u003c/p\u003e\n\u003cpre\u003e\u003ccode\u003e [ Folder Preferences ]\n [X] combined-folder-display\n [X] expanded-view-of-folders\n [X] quell-empty-directories\n\u003c/code\u003e\u003c/pre\u003e\n\u003cp\u003eOok nog binnen SETUP: kies ‘L’ voor collectionLists en maak met ‘A’ twee\nnieuwe collection lists:\u003c/p\u003e","title":"Pine"},{"content":"Resolved by a server reboot.\nAffected network shares:\nacfiles ARK-Backup Bargerveen Bargerveen-Gebruikers beevee bioniccell bio-orgchem B-Ware-Arnica B-Ware-Dotter B-Ware-Erica B-Ware-Knolrus B-Ware-Lobelia B-Ware-Stratiotes celbio1 celbio2 csgi-archief csg-staf cvi desda ds ehef1 evsf2dataoud evsf2schijf1 femtospin Floron geminstr2 giphouse gissig gmi hfml-backup hfml-backup2 highres impuls introcie isis janvanhest kaartenbak kangoeroe microbiology microbiology2 milkun2 milkun3 milkun5 milkun6 milkun7 milkun7rw molbiol mwstudiereis neuroinf neuroinf2 nfstest nwibackup olympus puc RandomWalkModel Ravon-Algemeen Ravon-Foto Ravon-Projecten secres2 sigma sigmaalmanak sigmacies sigmaexchange sigmasymposium splex spmdata3 spmdata4 spmdata5 spmdata6 spmdata7 stroom thalia ucm vsc vsc1 vsc10 vsc11 vsc12 vsc13 vsc14 vsc15 vsc2 vsc3 vsc4 vsc5 vsc6 vsc7 vsc8 vsc9 vscadmin wiskalg wiskunde\n","permalink":"https://cncz.science.ru.nl/cpk/1115/","summary":"\u003cp\u003eResolved by a server reboot.\u003c/p\u003e\n\u003cp\u003eAffected network shares:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eacfiles ARK-Backup Bargerveen Bargerveen-Gebruikers beevee bioniccell\u003c/code\u003e\n\u003ccode\u003ebio-orgchem B-Ware-Arnica B-Ware-Dotter B-Ware-Erica B-Ware-Knolrus\u003c/code\u003e\n\u003ccode\u003eB-Ware-Lobelia B-Ware-Stratiotes celbio1 celbio2 csgi-archief csg-staf\u003c/code\u003e\n\u003ccode\u003ecvi desda ds ehef1 evsf2dataoud evsf2schijf1 femtospin Floron geminstr2\u003c/code\u003e\n\u003ccode\u003egiphouse gissig gmi hfml-backup hfml-backup2 highres impuls introcie\u003c/code\u003e\n\u003ccode\u003eisis janvanhest kaartenbak kangoeroe microbiology microbiology2 milkun2\u003c/code\u003e\n\u003ccode\u003emilkun3 milkun5 milkun6 milkun7 milkun7rw molbiol mwstudiereis neuroinf\u003c/code\u003e\n\u003ccode\u003eneuroinf2 nfstest nwibackup olympus puc RandomWalkModel Ravon-Algemeen\u003c/code\u003e\n\u003ccode\u003eRavon-Foto Ravon-Projecten secres2 sigma sigmaalmanak sigmacies sigmaexchange\u003c/code\u003e\n\u003ccode\u003esigmasymposium splex spmdata3 spmdata4 spmdata5 spmdata6 spmdata7 stroom\u003c/code\u003e\n\u003ccode\u003ethalia ucm vsc vsc1 vsc10 vsc11 vsc12 vsc13 vsc14 vsc15 vsc2 vsc3 vsc4\u003c/code\u003e\n\u003ccode\u003evsc5 vsc6 vsc7 vsc8 vsc9 vscadmin wiskalg wiskunde\u003c/code\u003e\u003c/p\u003e","title":"Fileserver bulk problems"},{"content":"The network switches in the buildings/floors/locations mentioned above will be replaced. This means that both wired en wireless networks at these locations will be interrupted and network traffic will not be possible. This includes the network for access control, climate control etc.\n","permalink":"https://cncz.science.ru.nl/cpk/1114/","summary":"\u003cp\u003eThe network switches in the buildings/floors/locations mentioned above\nwill be replaced. This means that both wired en wireless networks at\nthese locations will be interrupted and network traffic will not be\npossible. This includes the network for access control, climate control\netc.\u003c/p\u003e","title":"Network maintenance in Mercator III north"},{"content":"Because of a software upgrade of the network switches in the buildings/floors/locations mentioned above, these network switches will be rebooted at 06:00h (AM) exactly. This means that both wired en wireless networks at these locations will be interrupted for 10 to 15 minutes and network traffic will not be possible. This includes the network for access control, climate control etc.\n","permalink":"https://cncz.science.ru.nl/cpk/1113/","summary":"\u003cp\u003eBecause of a software upgrade of the network switches in the\nbuildings/floors/locations mentioned above, these network switches will\nbe rebooted at 06:00h (AM) exactly. This means that both wired en\nwireless networks at these locations will be interrupted for 10 to 15\nminutes and network traffic will not be possible. This includes the\nnetwork for access control, climate control etc.\u003c/p\u003e","title":"Network maintenance in server room Huygens"},{"content":"After the network maintenance of 20141111 a single user reported later a problem with the wired network. These problems intensified and grew faculty wide on 20141119 at 13:34 hours. The network switches in the Faculty of Science received so many topology changes of the Spanning Tree Protocol (STP) that network traffic often stuttered. By curbing the STP traffic on 20141120 at 15:32 the stuttering disappeared. We still search for the exact cause, probably it is a housing move.\n","permalink":"https://cncz.science.ru.nl/cpk/1119/","summary":"\u003cp\u003eAfter the network maintenance of 20141111 a single user reported later a\nproblem with the wired network. These problems intensified and grew\nfaculty wide on 20141119 at 13:34 hours. The network switches in the\nFaculty of Science received so many \u003ca href=\"http://www.dummies.com/how-to/content/how-spanning-tree-protocol-stp-manages-network-cha.html\" target=\"_blank\"\u003etopology\nchanges\u003c/a\u003e\nof the \u003ca href=\"http://en.wikipedia.org/wiki/Spanning_Tree_Protocol\" target=\"_blank\"\u003eSpanning Tree Protocol\n(STP)\u003c/a\u003e that network\ntraffic often stuttered. By curbing the STP traffic on 20141120 at 15:32\nthe stuttering disappeared. We still search for the exact cause,\nprobably it is a housing move.\u003c/p\u003e","title":"Network problems FNWI"},{"content":"Because of a software upgrade of the network switches in the buildings/floors/locations mentioned above, these network switches will be rebooted at 06:00h (AM) exactly. This means that both wired en wireless networks at these locations will be interrupted for 10 to 15 minutes and network traffic will not be possible. This includes the network for access control, climate control etc.\nLocations:\nHuygens wing 3 all floors Huygens wing 4 all floors Huygens wing 8 all floors Huygens central street between wing 6 and 8 all floors ","permalink":"https://cncz.science.ru.nl/cpk/1112/","summary":"\u003cp\u003eBecause of a software upgrade of the network switches in the\nbuildings/floors/locations mentioned above, these network switches will\nbe rebooted at 06:00h (AM) exactly. This means that both wired en\nwireless networks at these locations will be interrupted for 10 to 15\nminutes and network traffic will not be possible. This includes the\nnetwork for access control, climate control etc.\u003c/p\u003e\n\u003cp\u003eLocations:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eHuygens wing 3 all floors\u003c/li\u003e\n\u003cli\u003eHuygens wing 4 all floors\u003c/li\u003e\n\u003cli\u003eHuygens wing 8 all floors\u003c/li\u003e\n\u003cli\u003eHuygens central street between wing 6 and 8 all floors\u003c/li\u003e\n\u003c/ul\u003e","title":"Network maintenance in part of Huygens"},{"content":"Because of a software upgrade of the network switches in the buildings/floors/locations mentioned above, these network switches will be rebooted on Tuesday morning at 06:00h (AM) exactly. This means that both wired en wireless networks at these locations will be interrupted for 10 to 15 minutes and network traffic will not be possible. This includes the network for access control, climate control etc.\nLocations: FELIX, HFML, Nanolab, Goudsmit pavillion (NMR), Lab DCN in A-2.002, Kinderopvang Heyendael (both buildings), Logistiek Centrum FNWI, Linnaeus building, Mercator 1, 6th floor\n","permalink":"https://cncz.science.ru.nl/cpk/1111/","summary":"\u003cp\u003eBecause of a software upgrade of the network switches in the\nbuildings/floors/locations mentioned above, these network switches will\nbe rebooted on Tuesday morning at 06:00h (AM) exactly. This means that\nboth wired en wireless networks at these locations will be interrupted\nfor 10 to 15 minutes and network traffic will not be possible. This\nincludes the network for access control, climate control etc.\u003c/p\u003e\n\u003cp\u003eLocations: FELIX, HFML, Nanolab, Goudsmit pavillion (NMR), Lab DCN in\nA-2.002, Kinderopvang Heyendael (both buildings), Logistiek Centrum\nFNWI, Linnaeus building, Mercator 1, 6th floor\u003c/p\u003e","title":"Network maintenance in peripheral buildings"},{"content":"Because of an upgrade of the network switches in the buildings/floors/locations mentioned above, these network switches will be replaced. This means that both wired en wireless networks at these locations will be interrupted and network traffic will not be possible. This includes the network for access control, climate control etc.\n","permalink":"https://cncz.science.ru.nl/cpk/1110/","summary":"\u003cp\u003eBecause of an upgrade of the network switches in the\nbuildings/floors/locations mentioned above, these network switches will\nbe replaced. This means that both wired en wireless networks at these\nlocations will be interrupted and network traffic will not be possible.\nThis includes the network for access control, climate control etc.\u003c/p\u003e","title":"Network maintenance in Huygens wing 7"},{"content":"Due to a short DDOS-attack the RU was virtually disconnected from the Internet during ca 7 minutes. All network connected systems may have had problems during that time. Until 15:30 some Eduroam users still had problems acquiring an IP address.\n","permalink":"https://cncz.science.ru.nl/cpk/1109/","summary":"\u003cp\u003eDue to a short\n\u003ca href=\"http://nl.wikipedia.org/wiki/Distributed_denial-of-service\" target=\"_blank\"\u003eDDOS-attack\u003c/a\u003e\nthe RU was virtually disconnected from the Internet during ca 7 minutes.\nAll network connected systems may have had problems during that time.\nUntil 15:30 some Eduroam users still had problems acquiring an IP\naddress.\u003c/p\u003e","title":"RU network problem"},{"content":"The router that regulates all IP traffic between subnets in the Huygens building and surrounding buildings, became too busy. All network traffic, especially UDP had problems. ISC network admins reduced the load by simplifying the ACLs and reducing logging. At about 12:00 the problem was temporarily solved. C\u0026amp;CZ will do a further inspection of all ACLs, with the aim to reduce the load on the router without reducing security for connected systems.\n","permalink":"https://cncz.science.ru.nl/cpk/1108/","summary":"\u003cp\u003eThe router that regulates all IP traffic between subnets in the Huygens\nbuilding and surrounding buildings, became \u003ca href=\"http://cricket.science.ru.nl/grapher.cgi?target=%2Fswitches%2Fdr-huyg.heyendaal.net%2Fperformance;view=cpu\" target=\"_blank\"\u003etoo\nbusy\u003c/a\u003e.\nAll network traffic, especially\n\u003ca href=\"http://en.wikipedia.org/wiki/User_Datagram_Protocol\" target=\"_blank\"\u003eUDP\u003c/a\u003e had problems.\nISC network admins reduced the load by simplifying the\n\u003ca href=\"http://en.wikipedia.org/wiki/Access_control_list#Networking_ACLs\" target=\"_blank\"\u003eACLs\u003c/a\u003e\nand reducing logging. At about 12:00 the problem was temporarily solved.\nC\u0026amp;CZ will do a further inspection of all ACLs, with the aim to reduce\nthe load on the router without reducing security for connected systems.\u003c/p\u003e","title":"FNWI network problem"},{"content":"On the ISC website we read:\nRadboud University agreed on a new mobile telephone contract with - again - provider Vodafone. For this purpose, on Wednesday, September 24th during daytime the Radboud subscriptions will be adjusted. Employees with a Vodafone mobile wille have no disturbance in calling or being called that day. But the Vodafone data network might be temporarily unavailable. To restore the data connection it is necessary to turn the mobile phone off and then on again. Of course employees on campus can always use the eduroam Wi-Fi network.\n","permalink":"https://cncz.science.ru.nl/cpk/1106/","summary":"\u003cp\u003eOn the \u003ca href=\"http://www.ru.nl/ictservicecentrum/\" target=\"_blank\"\u003eISC website\u003c/a\u003e we read:\u003c/p\u003e\n\u003cp\u003eRadboud University agreed on a new mobile telephone contract with -\nagain - provider Vodafone. For this purpose, on Wednesday, September\n24th during daytime the Radboud subscriptions will be adjusted.\nEmployees with a Vodafone mobile wille have no disturbance in calling or\nbeing called that day. But the Vodafone data network might be\ntemporarily unavailable. To restore the data connection it is necessary\nto turn the mobile phone off and then on again. Of course employees on\ncampus can always use the eduroam Wi-Fi network.\u003c/p\u003e","title":"Disturbance of Vodafone VWO data traffic"},{"content":"The server that acts within FNWI as first DNS resolver crashed. This made the network virtually unusable for a lot of computers in FNWI. Only after a reboot of the server, the problem was solved. Measures to reduce the inconvenience of such a crash and to make such a crash less likely, have been partly taken and are partly in preparation.\n","permalink":"https://cncz.science.ru.nl/cpk/1107/","summary":"\u003cp\u003eThe server that acts within FNWI as first \u003ca href=\"http://en.wikipedia.org/wiki/Domain_Name_System#DNS_resolvers\" target=\"_blank\"\u003eDNS\nresolver\u003c/a\u003e\ncrashed. This made the network virtually unusable for a lot of computers\nin FNWI. Only after a reboot of the server, the problem was solved.\nMeasures to reduce the inconvenience of such a crash and to make such a\ncrash less likely, have been partly taken and are partly in preparation.\u003c/p\u003e","title":"DNS resolver problem"},{"content":"A defective disk made the server stop serving web requests. A reboot fixed the problem. The defective disk will be replaced soon.\n","permalink":"https://cncz.science.ru.nl/cpk/1105/","summary":"\u003cp\u003eA defective disk made the server stop serving web requests. A reboot\nfixed the problem. The defective disk will be replaced soon.\u003c/p\u003e","title":"Webserver (klopjacht) disk problem"},{"content":"Due to an error during the planned maintenance by Surfnet of the RU network interface, the uplink of Radboud University to Surfnet was down.\n","permalink":"https://cncz.science.ru.nl/cpk/1104/","summary":"\u003cp\u003eDue to an \u003ca href=\"http://www.ru.nl/ictservicecentrum/actueel/storingsberichten/storing/\" target=\"_blank\"\u003eerror during the planned maintenance by\nSurfnet\u003c/a\u003e\nof the RU network interface, the uplink of Radboud University to Surfnet\nwas down.\u003c/p\u003e","title":"Surfnet uplink offline"},{"content":"One of the filesystems contained errors and prevented the system from starting up.\n","permalink":"https://cncz.science.ru.nl/cpk/1103/","summary":"\u003cp\u003eOne of the filesystems contained errors and prevented the system from\nstarting up.\u003c/p\u003e","title":"Fileserver goudsmit problems"},{"content":"Both processor fans have failed and need to be replaced.\n","permalink":"https://cncz.science.ru.nl/cpk/1102/","summary":"\u003cp\u003eBoth processor fans have failed and need to be replaced.\u003c/p\u003e","title":"SMTP server offline for half an hour"},{"content":"The fileserver had problems, which were resolved after a server reboot.\nAffected network shares:\nacfiles ARK-Backup Bargerveen Bargerveen-Gebruikers beevee bioniccell bio-orgchem B-Ware-Arnica B-Ware-Dotter B-Ware-Erica B-Ware-Knolrus B-Ware-Lobelia B-Ware-Stratiotes celbio1 celbio2 csgi-archief csg-staf cvi desda ds ehef1 evsf2dataoud evsf2schijf1 femtospin Floron geminstr2 giphouse gissig gmi hfml-backup hfml-backup2 highres impuls introcie isis janvanhest kaartenbak kangoeroe microbiology microbiology2 milkun2 milkun3 milkun5 milkun6 milkun7 milkun7rw molbiol mwstudiereis neuroinf neuroinf2 nfstest nwibackup olympus puc RandomWalkModel Ravon-Algemeen Ravon-Foto Ravon-Projecten secres2 sigma sigmaalmanak sigmacies sigmaexchange sigmasymposium splex spmdata3 spmdata4 spmdata5 spmdata6 spmdata7 stroom thalia ucm vsc vsc1 vsc10 vsc11 vsc12 vsc13 vsc14 vsc15 vsc2 vsc3 vsc4 vsc5 vsc6 vsc7 vsc8 vsc9 vscadmin wiskalg wiskunde\n","permalink":"https://cncz.science.ru.nl/cpk/1101/","summary":"\u003cp\u003eThe fileserver had problems, which were resolved after a server reboot.\u003c/p\u003e\n\u003cp\u003eAffected network shares:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eacfiles ARK-Backup Bargerveen Bargerveen-Gebruikers beevee bioniccell bio-orgchem\u003c/code\u003e\n\u003ccode\u003eB-Ware-Arnica B-Ware-Dotter B-Ware-Erica B-Ware-Knolrus B-Ware-Lobelia B-Ware-Stratiotes\u003c/code\u003e\n\u003ccode\u003ecelbio1 celbio2 csgi-archief csg-staf cvi desda ds ehef1 evsf2dataoud evsf2schijf1\u003c/code\u003e\n\u003ccode\u003efemtospin Floron geminstr2 giphouse gissig gmi hfml-backup hfml-backup2 highres\u003c/code\u003e\n\u003ccode\u003eimpuls introcie isis janvanhest kaartenbak kangoeroe microbiology microbiology2\u003c/code\u003e\n\u003ccode\u003emilkun2 milkun3 milkun5 milkun6 milkun7 milkun7rw molbiol mwstudiereis neuroinf\u003c/code\u003e\n\u003ccode\u003eneuroinf2 nfstest nwibackup olympus puc RandomWalkModel Ravon-Algemeen Ravon-Foto\u003c/code\u003e\n\u003ccode\u003eRavon-Projecten secres2 sigma sigmaalmanak sigmacies sigmaexchange sigmasymposium\u003c/code\u003e\n\u003ccode\u003esplex spmdata3 spmdata4 spmdata5 spmdata6 spmdata7 stroom thalia ucm vsc vsc1\u003c/code\u003e\n\u003ccode\u003evsc10 vsc11 vsc12 vsc13 vsc14 vsc15 vsc2 vsc3 vsc4 vsc5 vsc6 vsc7 vsc8 vsc9\u003c/code\u003e\n\u003ccode\u003evscadmin wiskalg wiskunde\u003c/code\u003e\u003c/p\u003e","title":"Fileserver bulk problems"},{"content":"While administering the network switchports for the move of ISIS to Mercator1 floor 0 to 3, ISC network management erroneously also changed the configuration of the network switchports of floor 4. When this was reported this morning, it could be readily remedied.\n","permalink":"https://cncz.science.ru.nl/cpk/1100/","summary":"\u003cp\u003eWhile administering the network switchports for the move of ISIS to\nMercator1 floor 0 to 3, ISC network management erroneously also changed\nthe configuration of the network switchports of floor 4. When this was\nreported this morning, it could be readily remedied.\u003c/p\u003e","title":"M1.04 no network"},{"content":"One of the mirrored disks failed. We didn’t manage to rebuild the raid set with a new disk. The system is reinstalled with two new disks. After that, data from /scratch could be recovered from one of the old disks.\n","permalink":"https://cncz.science.ru.nl/cpk/1099/","summary":"\u003cp\u003eOne of the mirrored disks failed. We didn’t manage to rebuild the raid\nset with a new disk. The system is reinstalled with two new disks. After\nthat, data from /scratch could be recovered from one of the old disks.\u003c/p\u003e","title":"Failure cn56 disk"},{"content":"The network drives will be migrated to a new server. During the migration, the network drives will be unavailable.\nAffected shares:\nacfiles, bioniccell, bio-orgchem, celbio1, CSGI-Archief, Csg-Staf, ds, evsf2schijf1, giphouse, gissig, gmi, hfml-backup, hfml-backup2, highres, impuls, introcie, isis, kaartenbak, microbiology, microbiology2, microbiologyftp, milkun2, milkun3, milkun5, milkun6, milkun7, milkun7rw, mwstudiereis, neuroinf, olympus, permissies, puc, secres2, sigma, sigmaalmanak, sigmacies, sigmaexchange, sigmasymposium, Soheto, splex, spmdata3, spmdata4, spmdata5, spmdata6, spmdata7, stroom, thalia, ucm, vsc, vsc1, vsc2, vsc3, vsc4, vsc5, vsc6, vsc7, vsc8, vsc9, vsc10, vsc11, vsc12, vsc13, vsc14, vsc15,wiskalg, wiskunde\n","permalink":"https://cncz.science.ru.nl/cpk/1097/","summary":"\u003cp\u003eThe network drives will be migrated to a new server. During the\nmigration, the \u003ca href=\"/howto/diskruimte#.5bnetwerk-schijven.5d.5bnetwork-shares.5d/\"\u003enetwork\ndrives\u003c/a\u003e\nwill be unavailable.\u003c/p\u003e\n\u003cp\u003eAffected shares:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eacfiles, bioniccell, bio-orgchem, celbio1, CSGI-Archief,\u003c/code\u003e\n\u003ccode\u003eCsg-Staf, ds, evsf2schijf1, giphouse, gissig, gmi, hfml-backup,\u003c/code\u003e\n\u003ccode\u003ehfml-backup2, highres, impuls, introcie, isis, kaartenbak,\u003c/code\u003e\n\u003ccode\u003emicrobiology, microbiology2, microbiologyftp, milkun2, milkun3,\u003c/code\u003e\n\u003ccode\u003emilkun5, milkun6, milkun7, milkun7rw, mwstudiereis, neuroinf,\u003c/code\u003e\n\u003ccode\u003eolympus, permissies, puc, secres2, sigma, sigmaalmanak, sigmacies,\u003c/code\u003e\n\u003ccode\u003esigmaexchange, sigmasymposium, Soheto, splex, spmdata3, spmdata4,\u003c/code\u003e\n\u003ccode\u003espmdata5, spmdata6, spmdata7, stroom, thalia, ucm, vsc, vsc1, vsc2,\u003c/code\u003e\n\u003ccode\u003evsc3, vsc4, vsc5, vsc6, vsc7, vsc8, vsc9, vsc10, vsc11, vsc12,\u003c/code\u003e\n\u003ccode\u003evsc13, vsc14, vsc15,wiskalg, wiskunde\u003c/code\u003e\u003c/p\u003e","title":"Network drive migration"},{"content":"The planned move of network drives from an old to a new server caused a lot of “stale NFS file handles”, which made it necessary to reboot some login servers.\n","permalink":"https://cncz.science.ru.nl/cpk/1098/","summary":"\u003cp\u003eThe planned move of network drives from an old to a new server caused a\nlot of “stale NFS file handles”, which made it necessary to reboot some\nlogin servers.\u003c/p\u003e","title":"Reboot of login servers after network drive migration"},{"content":"The IMAP server got overloaded again. Restarting the IMAP service was required to bring it back in operation. We think it is related to snapshots and therefore regularly remove invalid snapshots from now on.\n","permalink":"https://cncz.science.ru.nl/cpk/1096/","summary":"\u003cp\u003eThe IMAP server got overloaded again. Restarting the IMAP service was\nrequired to bring it back in operation. We think it is related to\nsnapshots and therefore regularly remove invalid snapshots from now on.\u003c/p\u003e","title":"IMAP mail server problem"},{"content":"The IMAP server got overloaded. Restarting the IMAP service was required to bring it back in operation.\n","permalink":"https://cncz.science.ru.nl/cpk/1095/","summary":"\u003cp\u003eThe IMAP server got overloaded. Restarting the IMAP service was required\nto bring it back in operation.\u003c/p\u003e","title":"IMAP mail server problem"},{"content":"The server had a problem, which had started at the Monday morning reboot. A reboot of the machine solved the problem. Soon all data will be moved to a new server. This will not cause much problems for users, because everybody uses the aliases something-srv.science.ru.nl.\n","permalink":"https://cncz.science.ru.nl/cpk/1094/","summary":"\u003cp\u003eThe server had a problem, which had started at the Monday morning\nreboot. A reboot of the machine solved the problem. Soon all data will\nbe moved to a new server. This will not cause much problems for users,\nbecause everybody uses the aliases something-srv.science.ru.nl.\u003c/p\u003e","title":"Data/file/vol server (heap) problem"},{"content":"At Monday May 19, a major upgrade of the wireless infrastructure and its maintenance tool (called Prime) will take place by the ISC. Therefore the wireless service (i.e. Eduroam) will be interrupted several times from 8:00 pm. Existing wireless connections will be lost and new connections will not be possible for some time. Due to the complexity of this operation this maintenance will possibly be continued at Monday, May 26, again with interruptions from 8:00 pm.\n","permalink":"https://cncz.science.ru.nl/cpk/1092/","summary":"\u003cp\u003eAt Monday May 19, a major upgrade of the wireless infrastructure and its\nmaintenance tool (called Prime) will take place by the ISC. Therefore\nthe wireless service (i.e. Eduroam) will be interrupted several times\nfrom 8:00 pm. Existing wireless connections will be lost and new\nconnections will not be possible for some time. Due to the complexity of\nthis operation this maintenance will possibly be continued at Monday,\nMay 26, again with interruptions from 8:00 pm.\u003c/p\u003e","title":"Maintenance wireless infrastructure May 19"},{"content":"One of the systemdisks reported SMART-errors and will be replaced.\n","permalink":"https://cncz.science.ru.nl/cpk/1091/","summary":"\u003cp\u003eOne of the systemdisks reported SMART-errors and will be replaced.\u003c/p\u003e","title":"Maintenance Goudsmit"},{"content":"Lilo did not shut down correctly during the planned weekly reboot. After a hardware reset, the machine booted just fine\n","permalink":"https://cncz.science.ru.nl/cpk/1090/","summary":"\u003cp\u003eLilo did not shut down correctly during the planned weekly reboot. After\na hardware reset, the machine booted just fine\u003c/p\u003e","title":"lilo.science.ru.nl offline"},{"content":"Just like yesterday, a reboot of the machine was necessary to restore the functionality. Tomorrow morning, the server will restart with a new kernel. It this doesn’t solve the problem, we will look into a new version of Samba.\n","permalink":"https://cncz.science.ru.nl/cpk/1089/","summary":"\u003cp\u003eJust like yesterday, a reboot of the machine was necessary to restore\nthe functionality. Tomorrow morning, the server will restart with a new\nkernel. It this doesn’t solve the problem, we will look into a new\nversion of Samba.\u003c/p\u003e","title":"And yet again Print/phpMyAdmin server problem"},{"content":"Just like yesterday, a reboot of the machine was necessary to restore the functionality. We will investigate if we can remediate this problem with newer software versions (Samba, Ubuntu, …)\n","permalink":"https://cncz.science.ru.nl/cpk/1088/","summary":"\u003cp\u003eJust like yesterday, a reboot of the machine was necessary to restore\nthe functionality. We will investigate if we can remediate this problem\nwith newer software versions (Samba, Ubuntu, …)\u003c/p\u003e","title":"Yet again Print/phpMyAdmin server problem"},{"content":"Some Eduroam users didn’t get an IP number, because one of the IP ranges had no free leases. This ranges contained all @science.ru.nl users. The ISC networking department first decreased the lease time. Now they also make this range free for use by @science.ru.nl users. This will prevent the problem from occuring again soon.\n","permalink":"https://cncz.science.ru.nl/cpk/1087/","summary":"\u003cp\u003eSome Eduroam users didn’t get an IP number, because one of the IP ranges\nhad no free leases. This ranges contained all @science.ru.nl users. The\n\u003ca href=\"http://www.ru.nl/isc\" target=\"_blank\"\u003eISC\u003c/a\u003e networking department first decreased the\nlease time. Now they also make this range free for use by @science.ru.nl\nusers. This will prevent the problem from occuring again soon.\u003c/p\u003e","title":"Eduroam problem"},{"content":"Again a reboot of the machine was necessary to restore the functionality. As a patch we will reboot this server each night.\n","permalink":"https://cncz.science.ru.nl/cpk/1085/","summary":"\u003cp\u003eAgain a reboot of the machine was necessary to restore the\nfunctionality. As a patch we will reboot this server each night.\u003c/p\u003e","title":"And again Print/phpMyAdmin server problem"},{"content":"The new RU IdM system erroneously rewrote the RU password hash when data about a person changed. This primariliy affected employees of FNWI, because for this group the Science email address had been incorporated in IdM. This will make it possible to use the Science address as an external mail address when resetting RU passwords. When the problem was recognized, it was fixed swiftly by restoring the RU password hashes from backup.\n","permalink":"https://cncz.science.ru.nl/cpk/1086/","summary":"\u003cp\u003eThe new \u003ca href=\"http://www.ru.nl/idm/\" target=\"_blank\"\u003eRU IdM system\u003c/a\u003e erroneously rewrote the\n\u003ca href=\"http://en.wikipedia.org/wiki/Cryptographic_hash_function#Password_verification\" target=\"_blank\"\u003eRU password\nhash\u003c/a\u003e\nwhen data about a person changed. This primariliy affected employees of\nFNWI, because for this group the Science email address had been\nincorporated in IdM. This will make it possible to use the Science\naddress as an external mail address when resetting RU passwords. When\nthe problem was recognized, it was fixed swiftly by restoring the RU\npassword hashes from backup.\u003c/p\u003e","title":"U-number authentication problem Eduroam"},{"content":"April 28/29/30, the Peage MFP and the Peage POS near the restaurant in the Huygens building cannot be used. The ISC will then investigate whether Peage can also be made available for employees instead of only for students. April 28, the MFP will be moved to the test location, April 30 it will be moved back.\n","permalink":"https://cncz.science.ru.nl/cpk/1084/","summary":"\u003cp\u003eApril 28/29/30, the \u003ca href=\"/howto/peage/\"\u003ePeage\u003c/a\u003e MFP and the Peage POS near\nthe restaurant in the Huygens building cannot be used. The\n\u003ca href=\"http://www.ru.nl/isc\" target=\"_blank\"\u003eISC\u003c/a\u003e will then investigate whether Peage can also\nbe made available for employees instead of only for students. April 28,\nthe MFP will be moved to the test location, April 30 it will be moved\nback.\u003c/p\u003e","title":"Peage MFP Huygens building in maintenance April 28/29/30"},{"content":"The printer has to be repaired. Spare parts have been ordered. We hope to have the printer operational again mid-May.\n","permalink":"https://cncz.science.ru.nl/cpk/1093/","summary":"\u003cp\u003eThe printer has to be repaired. Spare parts have been ordered. We hope\nto have the printer operational again mid-May.\u003c/p\u003e","title":"Poster printer \"kamerbreed\" broken"},{"content":"Although the hardware of the server was replaced, the server didn’t react for unknown reasons. A reboot of the machine solved the problem. We will think about ways to tackle this problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1083/","summary":"\u003cp\u003eAlthough the hardware of the server was replaced, the server didn’t\nreact for unknown reasons. A reboot of the machine solved the problem.\nWe will think about ways to tackle this problem.\u003c/p\u003e","title":"After replacement still Print/phpMyAdmin server problem"},{"content":"Because of the recent problems with this server, we are going to replace the server, in order to prevent further service interruptions.\n","permalink":"https://cncz.science.ru.nl/cpk/1082/","summary":"\u003cp\u003eBecause of the recent problems with this server, we are going to replace\nthe server, in order to prevent further service interruptions.\u003c/p\u003e","title":"Print/phpMyAdmin server replacement Thursday April 17 08:30-09:20"},{"content":"The server had a problem with one partition, which had started during the creation of new snapshots. We waited with the reboot untill after working hours. A reboot of the machine solved the problem. To prevent these problems in the future, we will no longer make local snapshots of homeservers, but of course the daily backups of the homeservers by the backup server will be continued.\n","permalink":"https://cncz.science.ru.nl/cpk/1081/","summary":"\u003cp\u003eThe server had a problem with one partition, which had started during\nthe creation of new snapshots. We waited with the reboot untill after\nworking hours. A reboot of the machine solved the problem. To prevent\nthese problems in the future, we will no longer make local snapshots of\nhomeservers, but of course the daily backups of the homeservers by the\nbackup server will be continued.\u003c/p\u003e","title":"U:/ home server pile problem"},{"content":"Just like four days ago, the server didn’t react for unknown reasons. A reboot of the machine solved the problem. We plan to replace the server next Thursday 08:30-09:00 hours, in order to prevent further service interruptions.\n","permalink":"https://cncz.science.ru.nl/cpk/1080/","summary":"\u003cp\u003eJust like four days ago, the server didn’t react for unknown reasons. A\nreboot of the machine solved the problem. We plan to replace the server\nnext Thursday 08:30-09:00 hours, in order to prevent further service\ninterruptions.\u003c/p\u003e","title":"And yet again Print/phpMyAdmin server problem"},{"content":"Just like two weeks ago, the server didn’t react for unknown reasons. A reboot of the machine solved the problem. Together with the supplier we will try to find out what to replace to prevent this in the future.\n","permalink":"https://cncz.science.ru.nl/cpk/1079/","summary":"\u003cp\u003eJust like two weeks ago, the server didn’t react for unknown reasons. A\nreboot of the machine solved the problem. Together with the supplier we\nwill try to find out what to replace to prevent this in the future.\u003c/p\u003e","title":"Again Print/phpMyAdmin server problem"},{"content":"From the moment of yesterday’s snapshots (13:00 hours), more and more processes were hung at the server. The first complaints arrived at C\u0026amp;CZ ca. 11:15 hours this morning. Therefore we decided ca. 11:35 to restart the server. The reboot resolved the problem. The number of snapshots will be reduced in order to try to prevent problems due to snapshots in the future.\n","permalink":"https://cncz.science.ru.nl/cpk/1078/","summary":"\u003cp\u003eFrom the moment of yesterday’s snapshots (13:00 hours), more and more\nprocesses were hung at the server. The first complaints arrived at C\u0026amp;CZ\nca. 11:15 hours this morning. Therefore we decided ca. 11:35 to restart\nthe server. The reboot resolved the problem. The number of snapshots\nwill be reduced in order to try to prevent problems due to snapshots in\nthe future.\u003c/p\u003e","title":"U: / home server bundle problems"},{"content":"Probably due to a too large printjob, the printer queue on the server (printto/printsmb/ooievaar) for the pr-hg-00-002 printer got stuck onWednesday morning. C\u0026amp;CZ was only informed of this problem at the end of Thursday. Friday morning this has been fixed by emptying the printqueue with old jobs.\n","permalink":"https://cncz.science.ru.nl/cpk/1077/","summary":"\u003cp\u003eProbably due to a too large printjob, the printer queue on the server\n(printto/printsmb/ooievaar) for the pr-hg-00-002 printer got stuck\nonWednesday morning. C\u0026amp;CZ was only informed of this problem at the end\nof Thursday. Friday morning this has been fixed by emptying the\nprintqueue with old jobs.\u003c/p\u003e","title":"Printer pr-hg-00-002 did not print from Windows/Mac"},{"content":"The server didn’t react for unknown reasons. A reboot of the machine solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1076/","summary":"\u003cp\u003eThe server didn’t react for unknown reasons. A reboot of the machine\nsolved the problem.\u003c/p\u003e","title":"Print/phpMyAdmin server problem"},{"content":"The server had a problem with one partition. A reboot of the machine solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1074/","summary":"\u003cp\u003eThe server had a problem with one partition. A reboot of the machine\nsolved the problem.\u003c/p\u003e","title":"U:/ home server pile problem"},{"content":"The Linux login server lilo3 didn’t have the homedirectories of some users. It took a reboot to fix this.\n","permalink":"https://cncz.science.ru.nl/cpk/1075/","summary":"\u003cp\u003eThe Linux login server lilo3 didn’t have the homedirectories of some\nusers. It took a reboot to fix this.\u003c/p\u003e","title":"Linux login server lilo3 reboot due to NFS-problems"},{"content":"The fileserver failed to start after the Monday morning reboot, because of filesystem errors (LVmd2-7). Manually fixing the errors solved the problem and the machine started successfully.\n","permalink":"https://cncz.science.ru.nl/cpk/1073/","summary":"\u003cp\u003eThe fileserver failed to start after the Monday morning reboot, because\nof filesystem errors (LVmd2-7). Manually fixing the errors solved the\nproblem and the machine started successfully.\u003c/p\u003e","title":"File server heap problems"},{"content":"The server had a high load and stopped servicing users, probably because of problems with the creation of new snapshots at 13:00 hours. A reboot solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1072/","summary":"\u003cp\u003eThe server had a high load and stopped servicing users, probably because\nof problems with the creation of new snapshots at 13:00 hours. A reboot\nsolved the problem.\u003c/p\u003e","title":"U: / home server pile and Linux login server lilo/stitch problems"},{"content":"On Monday evening, February 3rd between 19:00 - 24:00 (7:00 - 12:00 pm) maintanance will be carried out on the network devices in Huygens Wing 5. Therefore the wired and wireless networks will not be available at some moments at all locations in this Wing, on all floors.\n","permalink":"https://cncz.science.ru.nl/cpk/1069/","summary":"\u003cp\u003eOn Monday evening, February 3rd between 19:00 - 24:00 (7:00 - 12:00 pm)\nmaintanance will be carried out on the network devices in Huygens Wing\n5. Therefore the wired and wireless networks will not be available at\nsome moments at all locations in this Wing, on all floors.\u003c/p\u003e","title":"Network interruptions in Huygens wing 5"},{"content":"The announced proceedings on Tuesday, January 21st on the network equipment unfortunately did not take place due to a sudden instability of the network in Wing 1 the same day. In order to prevent further instability issues in Wing 2, it was necessary to solve the problems in Wing 1 first. These problems have been identified and corrected. The network maintenance in Wing 2 will now take place Tuesday, January 28th between 19:00 and 24:00 ( 7:00 pm to 12:00 ) during which the wireless and cabled networks will be off line for some time. This will affect all floors in Wing 2 and rooms along the corridors between wings 2 and 4 (all floors).\n","permalink":"https://cncz.science.ru.nl/cpk/1068/","summary":"\u003cp\u003eThe announced proceedings on Tuesday, January 21st on the network\nequipment unfortunately did not take place due to a sudden instability\nof the network in Wing 1 the same day. In order to prevent further\ninstability issues in Wing 2, it was necessary to solve the problems in\nWing 1 first. These problems have been identified and corrected. The\nnetwork maintenance in Wing 2 will now take place Tuesday, January 28th\nbetween 19:00 and 24:00 ( 7:00 pm to 12:00 ) during which the wireless\nand cabled networks will be off line for some time. This will affect all\nfloors in Wing 2 and rooms along the corridors between wings 2 and 4\n(all floors).\u003c/p\u003e","title":"Again network interruptions in Huygens wing 2"},{"content":"On Tuesday evening January 21 between 7:00 pm and 12:00 pm maintanance will be carried out on the network devices in Huygens wing 2. Therefore the wired and wireless networks will not be available at some moments at all locations in wing 2 and corridors between wings 2 and 4, on all floors.\n","permalink":"https://cncz.science.ru.nl/cpk/1067/","summary":"\u003cp\u003eOn Tuesday evening January 21 between 7:00 pm and 12:00 pm maintanance\nwill be carried out on the network devices in Huygens wing 2. Therefore\nthe wired and wireless networks will not be available at some moments at\nall locations in wing 2 and corridors between wings 2 and 4, on all\nfloors.\u003c/p\u003e","title":"Network interruptions in Huygens wing 2"},{"content":"On Monday evening January 13 between 7:00 pm and 12:00 pm maintanance will be carried out on the network devices in Huygens wing 1. Therefore the wired and wireless networks will not be available at some moments in many locations in wing 1 and corridors between wings 1 and 3, on all floors.\n","permalink":"https://cncz.science.ru.nl/cpk/1066/","summary":"\u003cp\u003eOn Monday evening January 13 between 7:00 pm and 12:00 pm maintanance\nwill be carried out on the network devices in Huygens wing 1. Therefore\nthe wired and wireless networks will not be available at some moments in\nmany locations in wing 1 and corridors between wings 1 and 3, on all\nfloors.\u003c/p\u003e","title":"Network interruptions in Huygens wing 1"},{"content":"Due to an error by an ISC network administrator, all internal and external RU network traffic was blocked for a short period.\n","permalink":"https://cncz.science.ru.nl/cpk/1065/","summary":"\u003cp\u003eDue to an error by an ISC network administrator, all internal and\nexternal RU network traffic was blocked for a short period.\u003c/p\u003e","title":"Network problems"},{"content":"The replacement of the old home server “bundle” has been postponed and will now guaranteed take place on Monday morning December 23. Because the data have been synchronized with the new server, there will not be much downtime. The new server should be very dependable: hardware RAID-6, double processors and power supplies and a 5-year support contract from the supplier. The performance has improved, e.g. by using hardware RAID with a 1 GB write cache with battery backup.\n","permalink":"https://cncz.science.ru.nl/cpk/1063/","summary":"\u003cp\u003eThe replacement of the old home server “bundle” has been postponed and\nwill now guaranteed take place on Monday morning December 23. Because\nthe data have been synchronized with the new server, there will not be\nmuch downtime. The new server should be very dependable: hardware\n\u003ca href=\"http://en.wikipedia.org/wiki/RAID#RAID_6_replacing_RAID_5_in_enterprise_environments\" target=\"_blank\"\u003eRAID-6\u003c/a\u003e,\ndouble processors and power supplies and a 5-year support contract from\nthe supplier. The performance has improved, e.g. by using hardware RAID\nwith a 1 GB \u003ca href=\"http://serverfault.com/questions/65096/battery-backed-write-cache\" target=\"_blank\"\u003ewrite cache with battery\nbackup\u003c/a\u003e.\u003c/p\u003e","title":"Postponed replacement of home-server \"bundle\""},{"content":"In the course of these two days, above network shares will be moved to new servers. During the move action, a share will not be available. If you encounter any problems connecting to a network share using Windows, always connect using the “share-name minus srv” naming scheme: \\\\sharenaam-srv.science.ru.nl\\sharenaam. See also Diskruimte#Naming.\nAffected network shares:\nacfiles2 botany botany-general carta comsol digicd encapson encapson2 exoarchief felix gi2 gi3 hfml-45t hfml-data hfml-engineering ifl iris mailmanincludes mbaudit1 mbaudit2 mbbioel mbcns mbcortex mbdata mbread mbwrite mestrelab mi2 mi3 milkun4 milkun4rw molchem molchem2 molphtec mol-secr multimedia neuropi ns3 nwi-backup onlyme owc pcb planthgl plantkunde-hgl sdisk/software share snn sofie spmdata1 tdisk/cursus tece teceleiding temp tracegastemp wallpaper xpcursus xpsoftware\n","permalink":"https://cncz.science.ru.nl/cpk/1064/","summary":"\u003cp\u003eIn the course of these two days, above network shares will be moved to\nnew servers. During the move action, a share will not be available. If\nyou encounter any problems connecting to a network share using Windows,\nalways connect using the “share-name minus srv” naming scheme:\n\\\\sharenaam-srv.science.ru.nl\\sharenaam. See also\n\u003ca href=\"/howto/diskruimte#naming/\"\u003eDiskruimte#Naming\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eAffected network shares:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eacfiles2 botany botany-general carta comsol digicd encapson encapson2\u003c/code\u003e\n\u003ccode\u003eexoarchief felix gi2 gi3 hfml-45t hfml-data hfml-engineering ifl iris\u003c/code\u003e\n\u003ccode\u003emailmanincludes mbaudit1 mbaudit2 mbbioel mbcns mbcortex mbdata mbread\u003c/code\u003e\n\u003ccode\u003embwrite mestrelab mi2 mi3 milkun4 milkun4rw molchem molchem2 molphtec\u003c/code\u003e\n\u003ccode\u003emol-secr multimedia neuropi ns3 nwi-backup onlyme owc pcb planthgl\u003c/code\u003e\n\u003ccode\u003eplantkunde-hgl sdisk/software share snn sofie spmdata1 tdisk/cursus tece teceleiding\u003c/code\u003e\n\u003ccode\u003etemp tracegastemp wallpaper xpcursus xpsoftware\u003c/code\u003e\u003c/p\u003e","title":"Moving network shares to new servers"},{"content":"Tuesday night December 17 19:00-24:00 hours, maintenance work will be done affecting the data network in Huygens wing 1. The wired and wireless network will suffer service interruptions a few times during that period. The main inconvenience will be on the ground floor.\n","permalink":"https://cncz.science.ru.nl/cpk/1062/","summary":"\u003cp\u003eTuesday night December 17 19:00-24:00 hours, maintenance work will be\ndone affecting the data network in Huygens wing 1. The wired and\nwireless network will suffer service interruptions a few times during\nthat period. The main inconvenience will be on the ground floor.\u003c/p\u003e","title":"Interruption of network in Huygens wing 1"},{"content":"C\u0026amp;CZ changed the DHCP-configuration of the KM MFP’s, because KM had told us all KM’s had an identical configuration after the upgrade of the night of December 4. Soon thereafter the KM’s outside of the Huygens building showed problems. After changing the DHCP-configuration back to the previous version and restarting the MFP’s, the problem was resolved. The firmware upgrade of these machines still has to take place.\n","permalink":"https://cncz.science.ru.nl/cpk/1061/","summary":"\u003cp\u003eC\u0026amp;CZ changed the DHCP-configuration of the KM MFP’s, because KM had told\nus all KM’s had an identical configuration after the upgrade of the\nnight of December 4. Soon thereafter the KM’s outside of the Huygens\nbuilding showed problems. After changing the DHCP-configuration back to\nthe previous version and restarting the MFP’s, the problem was resolved.\nThe firmware upgrade of these machines still has to take place.\u003c/p\u003e","title":"Service interruption Konica Minolta MFP's outside of Huygens building"},{"content":"Wednesday night, the firmware of the Konica Minolta multifunctionals will be upgraded. This should resolve existing problems, like the not waking up from sleep mode. Please report all remaining problems, for MFP-hardware and paper to KM via phone: 55955 option 4.\n","permalink":"https://cncz.science.ru.nl/cpk/1060/","summary":"\u003cp\u003eWednesday night, the firmware of the Konica Minolta multifunctionals\nwill be upgraded. This should resolve existing problems, like the not\nwaking up from sleep mode. Please report all remaining problems, for\nMFP-hardware and paper to KM via phone: 55955 option 4.\u003c/p\u003e","title":"Konica Minolta MFP's firmware upgrade"},{"content":"Tuesday morning around half past nine, there was a short power dip for RU/UMCN, probably due to a switch error at Liander. This power dip, that is not listed on the power interruption website, made all systems restart that were not on UPS power. Because only the network switches in Huygens wing 1 and 7 are on UPS power, a lot of users lost their connection to the network, including wireless and IP-telephony, for about 20 minutes. Apparatus that restarted faster than the network, might have needed an extra restart to restore the connection to the network.\n","permalink":"https://cncz.science.ru.nl/cpk/1059/","summary":"\u003cp\u003eTuesday morning around half past nine, there was a short power dip for\nRU/UMCN, probably due to a switch error at Liander. This power dip, that\nis not listed on the \u003ca href=\"http://www.liander.nl/liander/storingen_onderbrekingen/actueel_storingsoverzicht.htm;jsessionid=8BVgSdwF4SnwgtF62Qhcvp9PZPDSPyVQLfrRsbVGph0MW28zy2Z6!1492477250!2138117550?postcode=6525ED\u0026amp;page=1\u0026amp;ordering=SortDatumVan\u0026amp;skipFlip=\u0026amp;sortPlaats=inactive\u0026amp;sortDatumVan=down\u0026amp;sortDatumTot=inactive\u0026amp;sortTypeOnderbreking=inactive\u0026amp;sortUitgevallenComponenten=inactive\u0026amp;sortOorzaak=inactive\u0026amp;sortEnergiesoort=inactive\u0026amp;sortGetroffenAfnemers=inactive\u0026amp;toonAlles=false\u0026amp;invoerDatumStart=02-12-2013\u0026amp;invoerDatumEind=03-01-2014\u0026amp;energiesoort=E\u0026amp;energietype=option3\" target=\"_blank\"\u003epower interruption\nwebsite\u003c/a\u003e,\nmade all systems restart that were not on UPS power. Because only the\nnetwork switches in Huygens wing 1 and 7 are on UPS power, a lot of\nusers lost their connection to the network, including wireless and\nIP-telephony, for about 20 minutes. Apparatus that restarted faster than\nthe network, might have needed an extra restart to restore the\nconnection to the network.\u003c/p\u003e","title":"Power dip December 3"},{"content":"The ISC let us know that after the installation of patches installed in BASS during the weekend of December 1, the possibility to use a recent version of Java (version 7) had erroneously disappeared. As of February 11, 2014 this issue has been resolved. The function in BASS to work with all versions of Java SE (JRE) on the client (PC) has been reactivated. Furthermore all JAR-files in BASS have received a security certificate (they have been signed), with which it possible for BASS to work with the latest Java SE versions (Java SE 7.51 en hoger). BASS users who work with Forms, will see pop-up windows asking “Do you want to run this application?”. Of this a description has been made on the RU Intranet.\n","permalink":"https://cncz.science.ru.nl/cpk/1070/","summary":"\u003cp\u003eThe \u003ca href=\"http://www.ru.nl/isc\" target=\"_blank\"\u003eISC\u003c/a\u003e let us know that after the installation\nof patches installed in \u003ca href=\"/howto/bass/\"\u003eBASS\u003c/a\u003e during the weekend of\nDecember 1, the possibility to use a recent version of Java (version 7)\nhad erroneously disappeared. As of February 11, 2014 this issue has been\nresolved. The function in BASS to work with all versions of Java SE\n(JRE) on the client (PC) has been reactivated. Furthermore all JAR-files\nin BASS have received a security certificate (they have been signed),\nwith which it possible for BASS to work with the latest Java SE versions\n(Java SE 7.51 en hoger). BASS users who work with Forms, will see pop-up\nwindows asking “Do you want to run this application?”. Of this a\n\u003ca href=\"http://www.radboudnet.nl/publish/pages/685146/meldingen_java_nieuwe_versie_4.pdf\" target=\"_blank\"\u003edescription has been made on the RU\nIntranet\u003c/a\u003e.\u003c/p\u003e","title":"BASS Java 7 problem"},{"content":"For unknown reasons, the network interface of the server was not online. Running ifdown / ifup eth2 resolved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1057/","summary":"\u003cp\u003eFor unknown reasons, the network interface of the server was not online.\nRunning ifdown / ifup eth2 resolved the problem.\u003c/p\u003e","title":"Gipphoenix network problem"},{"content":"For unknown reasons one of the servers had a high load and stopped servicing users. A reboot solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1056/","summary":"\u003cp\u003eFor unknown reasons one of the servers had a high load and stopped\nservicing users. A reboot solved the problem.\u003c/p\u003e","title":"Web lectures unavailable for 20 minutes"},{"content":"For unknown reasons the server had a high load and stopped servicing users. A reboot solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1055/","summary":"\u003cp\u003eFor unknown reasons the server had a high load and stopped servicing\nusers. A reboot solved the problem.\u003c/p\u003e","title":"U: / home server bundle problems"},{"content":"Just like 3 days ago, the IMAP server got overloaded after noon. It took a reboot to bring the service back in operation. We suspect that our making of a backup-snapshot triggers this and now have disabled the snapshot during working hours.\n","permalink":"https://cncz.science.ru.nl/cpk/1054/","summary":"\u003cp\u003eJust like 3 days ago, the IMAP server got overloaded after noon. It took\na reboot to bring the service back in operation. We suspect that our\nmaking of a backup-snapshot triggers this and now have disabled the\nsnapshot during working hours.\u003c/p\u003e","title":"Again IMAP mail server problem"},{"content":"During an extra backup the IMAP server got overloaded. It took a reboot to bring the service back in operation.\n","permalink":"https://cncz.science.ru.nl/cpk/1053/","summary":"\u003cp\u003eDuring an extra backup the IMAP server got overloaded. It took a reboot\nto bring the service back in operation.\u003c/p\u003e","title":"IMAP mail server problem"},{"content":"Yesterday afternoon around 14:30 the ISC conducted a seemingly innocent maintenance on the LDAP-server, but immediately after that auth-requests from Radius were no longer serviced. This made it impossible for wireless users to authenticate with their u/s/e number. Users in the realm @science.ru.nl were not affected by this.\n","permalink":"https://cncz.science.ru.nl/cpk/1052/","summary":"\u003cp\u003eYesterday afternoon around 14:30 the \u003ca href=\"http://www.ru.nl/isc\" target=\"_blank\"\u003eISC\u003c/a\u003e\nconducted a seemingly innocent maintenance on the LDAP-server, but\nimmediately after that auth-requests from Radius were no longer\nserviced. This made it impossible for wireless users to authenticate\nwith their u/s/e number. Users in the realm @science.ru.nl were not\naffected by this.\u003c/p\u003e","title":"Wireless @ru.nl authentication problem"},{"content":"Tuesday morning around 11 o’clock, there was a short power dip for RU/UMCN. This power dip, that is not listed on the power interruption website, made all systems restart that were not on emergency power. Because only the network switches in Huygens wing 1 and 7 are on emergency power, a lot of users lost their connection to the network, including wireless and IP-telephony, for about 5 minutes. Apparatus that restarted faster than the network, might have needed an extra restart to restore the connection to the network. A department reported that a departmental printer did not survive the power dip.\n","permalink":"https://cncz.science.ru.nl/cpk/1051/","summary":"\u003cp\u003eTuesday morning around 11 o’clock, there was a \u003ca href=\"http://www.gelderlander.nl/regio/rijk-van-nijmegen/stroomstoringen-in-malden-en-nijmegen-1.4062999\" target=\"_blank\"\u003eshort power dip for\nRU/UMCN\u003c/a\u003e.\nThis power dip, that is not listed on the \u003ca href=\"http://www.liander.nl/liander/storingen_onderbrekingen/actueel_storingsoverzicht.htm?postcode=6525ED\u0026amp;page=1\u0026amp;ordering=SortDatumVan\u0026amp;skipFlip=\u0026amp;sortPlaats=inactive\u0026amp;sortDatumVan=down\u0026amp;sortDatumTot=inactive\u0026amp;sortTypeOnderbreking=inactive\u0026amp;sortUitgevallenComponenten=inactive\u0026amp;sortOorzaak=inactive\u0026amp;sortEnergiesoort=inactive\u0026amp;sortGetroffenAfnemers=inactive\u0026amp;toonAlles=false\u0026amp;invoerDatumStart=22-10-2013\u0026amp;invoerDatumEind=22-10-2013\u0026amp;energiesoort=E\u0026amp;energietype=option3\" target=\"_blank\"\u003epower interruption\nwebsite\u003c/a\u003e,\nmade all systems restart that were not on emergency power. Because only\nthe network switches in Huygens wing 1 and 7 are on emergency power, a\nlot of users lost their connection to the network, including wireless\nand IP-telephony, for about 5 minutes. Apparatus that restarted faster\nthan the network, might have needed an extra restart to restore the\nconnection to the network. A department reported that a departmental\nprinter did not survive the power dip.\u003c/p\u003e","title":"Power dip October 22, ca. 11:00"},{"content":"Update: we changed the configuration of the network switchports of the KM’s, which resolves the problem. This was necessary, because the KM’s do not try hard enough to make a connection with the SMTP-server.\nUpdate: an alternative is scanning to a USB stick. Log in at the MFP with the scan-pin, put a document in the feeder or on the document glass, select Scan and then plug the USB stick into the USB port on the right side of the MFP , on the top side. After a few seconds the MFP recognizes the USB stick and presents the choice “Save a document to external memory”. Choose OK and press Start. See also [RU http://www.ru.nl/publish/pages/687597/uitrol-mf-scan.pdf manual] on the RU-page about the MFP’s.\nUsers report to us that the scanning to e-mail sometimes doesn’t work, with an error like “Server not found. Scan deleted”. The problem has been reported to KM. As far as we know, the problem occurs only seldom. It can temporarily be resolved by switching the machine off and on again.\n","permalink":"https://cncz.science.ru.nl/cpk/1071/","summary":"\u003cp\u003eUpdate: we changed the configuration of the network switchports of the\nKM’s, which resolves the problem. This was necessary, because the KM’s\ndo not try hard enough to make a connection with the SMTP-server.\u003c/p\u003e\n\u003cp\u003eUpdate: an alternative is scanning to a USB stick. Log in at the MFP\nwith the scan-pin, put a document in the feeder or on the document\nglass, select \u003ccode\u003eScan\u003c/code\u003e and then plug the USB stick into the USB port on\nthe right side of the MFP , on the top side. After a few seconds the MFP\nrecognizes the USB stick and presents the choice “Save a document to\nexternal memory”. Choose \u003ccode\u003eOK\u003c/code\u003e and press \u003ccode\u003eStart\u003c/code\u003e. See also [RU\n\u003ca href=\"http://www.ru.nl/publish/pages/687597/uitrol-mf-scan.pdf\" target=\"_blank\"\u003ehttp://www.ru.nl/publish/pages/687597/uitrol-mf-scan.pdf\u003c/a\u003e manual] on\nthe \u003ca href=\"http://www.ru.nl/ictservicecentrum/medewerkers/werkplek-campus/uitrol/\" target=\"_blank\"\u003eRU-page about the\nMFP’s\u003c/a\u003e.\u003c/p\u003e","title":"Scan to email sometimes doesn't work for Konica Minolta MFPs"},{"content":"Again a Science user supplied his Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam.\nPLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1050/","summary":"\u003cp\u003eAgain a Science user supplied his Science password to phishers. We\nnotice that because Internet criminals use these passwords to get into\nthe Science mail servers (horde webmail, smtp) in order to send spam.\u003c/p\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"Again mail problems after supplying password to phishers"},{"content":"The printserver crashed again, for yet unknown reasons. A reboot of the machine solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1049/","summary":"\u003cp\u003eThe printserver crashed again, for yet unknown reasons. A reboot of the\nmachine solved the problem.\u003c/p\u003e","title":"Printto/printsmb/phpmyadmin server problems again"},{"content":"The server crashed. A reboot of the machine solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1048/","summary":"\u003cp\u003eThe server crashed. A reboot of the machine solved the problem.\u003c/p\u003e","title":"U: / home server bundle problems"},{"content":"The printserver crashed. A reboot of the machine solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1047/","summary":"\u003cp\u003eThe printserver crashed. A reboot of the machine solved the problem.\u003c/p\u003e","title":"Printto/printsmb/phpmyadmin server problems"},{"content":"The motherboard of the printer had to be replaced. Because there is no maintenance contract for this old printer and spare parts were hard to get, repair has taken a long time.\n","permalink":"https://cncz.science.ru.nl/cpk/1058/","summary":"\u003cp\u003eThe motherboard of the printer had to be replaced. Because there is no\nmaintenance contract for this old printer and spare parts were hard to\nget, repair has taken a long time.\u003c/p\u003e","title":"Poster printer \"kamerbreed\" broken"},{"content":"The printserver crashed. A reboot of the machine solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1044/","summary":"\u003cp\u003eThe printserver crashed. A reboot of the machine solved the problem.\u003c/p\u003e","title":"Printto/printsmb server problems"},{"content":"The availability of sound in Windows appeared to be depending on the state in which Linux had left it. Therefore the sound in Linux on dual boot PC’s has been disabled, in order to have it available on Windows. Sound under Linux will be available again once the HP Compaq Elite 8300 AiO harware has been phased out.\n","permalink":"https://cncz.science.ru.nl/cpk/1046/","summary":"\u003cp\u003eThe availability of sound in Windows appeared to be depending on the\nstate in which Linux had left it. Therefore the sound in Linux on dual\nboot PC’s has been disabled, in order to have it available on Windows.\nSound under Linux will be available again once the HP Compaq Elite 8300\nAiO harware has been phased out.\u003c/p\u003e","title":"Sound on Linux dual-boot PC's disabled"},{"content":"The fileserver failed to see its disks. A reboot of the machine solved the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1043/","summary":"\u003cp\u003eThe fileserver failed to see its disks. A reboot of the machine solved\nthe problem.\u003c/p\u003e","title":"File server heap problems"},{"content":"The fileserver failed the regular Monday morning reboot. Only after a rescue boot and a removal of all snapshots rebooting the machine worked.\nAffected disks:\narb botgarden ccs4 excienwi exoarchief FIT gi1 gipsy isis-dhz itt iwwr1 leonardo mercator micord molspec olcwis ons pvs ratio tzacad vb vscxray WiskundeToernooi zeegras\n","permalink":"https://cncz.science.ru.nl/cpk/1042/","summary":"\u003cp\u003eThe fileserver failed the regular Monday morning reboot. Only after a\nrescue boot and a removal of all snapshots rebooting the machine worked.\u003c/p\u003e\n\u003cp\u003eAffected disks:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003earb botgarden ccs4 excienwi exoarchief FIT gi1 gipsy isis-dhz\u003c/code\u003e\n\u003ccode\u003eitt iwwr1 leonardo mercator micord molspec olcwis ons pvs\u003c/code\u003e\n\u003ccode\u003eratio tzacad vb vscxray WiskundeToernooi zeegras\u003c/code\u003e\u003c/p\u003e","title":"File server chunk failed reboot"},{"content":"Again a Science user supplied his Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam.\nPLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1041/","summary":"\u003cp\u003eAgain a Science user supplied his Science password to phishers. We\nnotice that because Internet criminals use these passwords to get into\nthe Science mail servers (horde webmail, smtp) in order to send spam.\u003c/p\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"Mail problems after supplying password to phishers"},{"content":"Again a Science user supplied his Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam.\nPLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1039/","summary":"\u003cp\u003eAgain a Science user supplied his Science password to phishers. We\nnotice that because Internet criminals use these passwords to get into\nthe Science mail servers (horde webmail, smtp) in order to send spam.\u003c/p\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"And again mail problems after supplying password to phishers"},{"content":"Again a Science user supplied his Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam.\nPLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1038/","summary":"\u003cp\u003eAgain a Science user supplied his Science password to phishers. We\nnotice that because Internet criminals use these passwords to get into\nthe Science mail servers (horde webmail, smtp) in order to send spam.\u003c/p\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"And yet again mail problems after supplying password to phishers"},{"content":"The b/w tuned Konica Minolta printer/MFP pr-hg-00-002 suddenly printed in color. C\u0026amp;CZ refunded the student’s budget and stopped the printer until KM had corrected the settings.\n","permalink":"https://cncz.science.ru.nl/cpk/1040/","summary":"\u003cp\u003eThe b/w tuned Konica Minolta printer/MFP pr-hg-00-002 suddenly printed\nin color. C\u0026amp;CZ refunded the student’s budget and stopped the printer\nuntil KM had corrected the settings.\u003c/p\u003e","title":"B/W KM printer pr-hg-00-002 printed in color"},{"content":"The DNS server on ns1.science.ru.nl didn’t start after the reboot, due to a syntax error in one of the zone files. When this had been corrected, it started without problems.\n","permalink":"https://cncz.science.ru.nl/cpk/1037/","summary":"\u003cp\u003eThe DNS server on ns1.science.ru.nl didn’t start after the reboot, due\nto a syntax error in one of the zone files. When this had been\ncorrected, it started without problems.\u003c/p\u003e","title":"DNS nameserver problem"},{"content":"Affected shares:\narb botgarden ccs4 excienwi exoarchief FIT gi1 gipsy isis-dhz itt iwwr1 leonardo mercator micord molspec olcwis ons pvs ratio tzacad vb vscxray WiskundeToernooi zeegras\n","permalink":"https://cncz.science.ru.nl/cpk/1034/","summary":"\u003cp\u003eAffected shares:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003earb botgarden ccs4 excienwi exoarchief FIT gi1 gipsy isis-dhz\u003c/code\u003e\n\u003ccode\u003eitt iwwr1 leonardo mercator micord molspec olcwis ons pvs\u003c/code\u003e\n\u003ccode\u003eratio tzacad vb vscxray WiskundeToernooi zeegras\u003c/code\u003e\u003c/p\u003e","title":"Fileserver chunk needs reboot"},{"content":"Again a Science user supplied his Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam.\nPLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1035/","summary":"\u003cp\u003eAgain a Science user supplied his Science password to phishers. We\nnotice that because Internet criminals use these passwords to get into\nthe Science mail servers (horde webmail, smtp) in order to send spam.\u003c/p\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"Yet again mail problems after supplying password to phishers"},{"content":"Again a Science user supplied his Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam.\nPLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1033/","summary":"\u003cp\u003eAgain a Science user supplied his Science password to phishers. We\nnotice that because Internet criminals use these passwords to get into\nthe Science mail servers (horde webmail, smtp) in order to send spam.\u003c/p\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"Again mail problems after supplying password to phishers"},{"content":"Again a Science user supplied his Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam.\nPLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1032/","summary":"\u003cp\u003eAgain a Science user supplied his Science password to phishers. We\nnotice that because Internet criminals use these passwords to get into\nthe Science mail servers (horde webmail, smtp) in order to send spam.\u003c/p\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"Mail problems after supplying password to phishers"},{"content":"From August 12 the wireless network in the Science buildings is being replaced. The new IP numbers appear to not be able to connect directly to BASS. We expect that this will be changed soon.\n","permalink":"https://cncz.science.ru.nl/cpk/1036/","summary":"\u003cp\u003eFrom August 12 the wireless network in the Science buildings is being\nreplaced. The new IP numbers appear to not be able to connect directly\nto BASS. We expect that this will be changed soon.\u003c/p\u003e","title":"Wireless access to BASS problem"},{"content":"An error in distributing a Group Policy Object (GPO) caused roaming profiles to fail for the last week. The start date/time of the problem is unknown, This is an estimate.\n","permalink":"https://cncz.science.ru.nl/cpk/1031/","summary":"\u003cp\u003eAn error in distributing a Group Policy Object (GPO) caused roaming\nprofiles to fail for the last week. The start date/time of the problem\nis unknown, This is an estimate.\u003c/p\u003e","title":"Windows Roaming Profile problem"},{"content":"Today lilo3 appeared to have an incorrectly chosen IP number. A reboot fixed this.\n","permalink":"https://cncz.science.ru.nl/cpk/1030/","summary":"\u003cp\u003eToday lilo3 appeared to have an incorrectly chosen IP number. A reboot\nfixed this.\u003c/p\u003e","title":"Lilo3 reboot for different IP number"},{"content":"Again a Science user supplied his Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam.\nPLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1029/","summary":"\u003cp\u003eAgain a Science user supplied his Science password to phishers. We\nnotice that because Internet criminals use these passwords to get into\nthe Science mail servers (horde webmail, smtp) in order to send spam.\u003c/p\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"Mail problems after supplying password to phishers"},{"content":"Again a Science user supplied his Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam.\nPLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1027/","summary":"\u003cp\u003eAgain a Science user supplied his Science password to phishers. We\nnotice that because Internet criminals use these passwords to get into\nthe Science mail servers (horde webmail, smtp) in order to send spam.\u003c/p\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"Mail problems after supplying password to phishers"},{"content":"Again a Science user supplied his Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam.\nPLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1028/","summary":"\u003cp\u003eAgain a Science user supplied his Science password to phishers. We\nnotice that because Internet criminals use these passwords to get into\nthe Science mail servers (horde webmail, smtp) in order to send spam.\u003c/p\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"Mail problems after supplying password to phishers"},{"content":"Again a Science user supplied his Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam.\nPLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1026/","summary":"\u003cp\u003eAgain a Science user supplied his Science password to phishers. We\nnotice that because Internet criminals use these passwords to get into\nthe Science mail servers (horde webmail, smtp) in order to send spam.\u003c/p\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"Mail problems after supplying password to phishers"},{"content":"Again a Science user supplied his Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam.\nPLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1025/","summary":"\u003cp\u003eAgain a Science user supplied his Science password to phishers. We\nnotice that because Internet criminals use these passwords to get into\nthe Science mail servers (horde webmail, smtp) in order to send spam.\u003c/p\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"Mail problems after supplying password to phishers"},{"content":"The DNS server on ns1.science.ru.nl didn’t start after the reboot, due to a syntax error in one of the zone files. When this had been coreected, it started without problems.\n","permalink":"https://cncz.science.ru.nl/cpk/1024/","summary":"\u003cp\u003eThe DNS server on ns1.science.ru.nl didn’t start after the reboot, due\nto a syntax error in one of the zone files. When this had been\ncoreected, it started without problems.\u003c/p\u003e","title":"DNS nameserver problem"},{"content":"The IMAP server had a problem, which made a reboot necessary.\n","permalink":"https://cncz.science.ru.nl/cpk/1023/","summary":"\u003cp\u003eThe IMAP server had a problem, which made a reboot necessary.\u003c/p\u003e","title":"Mail problem (IMAP server)"},{"content":"On Thursday June 6th from 10:00 pm the wireless networks ru-wlan and eduroam will be unavailable for at least 2 hours. All existing connections will be cut off. The wireless network Science however will not be effected and will be kept available.\n","permalink":"https://cncz.science.ru.nl/cpk/1022/","summary":"\u003cp\u003eOn Thursday June 6th from 10:00 pm the wireless networks ru-wlan and\neduroam will be unavailable for at least 2 hours. All existing\nconnections will be cut off. The wireless network Science however will\nnot be effected and will be kept available.\u003c/p\u003e","title":"Maintenance Wireless@RU"},{"content":"The central BASS RU environment has been updated last weekend. Part of this upgrade was a change of the web address of the second logon screen, as announced on our BASS page. This morning it became clear that access to the second logon screen via the Port Forwarder didn’t work anymore. Therefore the UCI rolled back the change of the second logon screen. This means that AFTER LOGGING ON TO THE PROXY at https://admin.ru.nl/ BASS is available again via https://bassruap01.uci.ru.nl:8010/OA_HTML/AppsLocalLogin.jsp\nThis problem will be finally resolved when the Port Forwarder will be stopped on October 1, 2013.\n","permalink":"https://cncz.science.ru.nl/cpk/1045/","summary":"\u003cp\u003eThe central BASS RU environment has been updated last weekend. Part of\nthis upgrade was a change of the web address of the second logon screen,\nas announced on our \u003ca href=\"/howto/bass/\"\u003eBASS\u003c/a\u003e page. This morning it became\nclear that access to the second logon screen via the Port Forwarder\ndidn’t work anymore. Therefore the UCI rolled back the change of the\nsecond logon screen. This means that AFTER LOGGING ON TO THE PROXY at\n\u003ca href=\"https://admin.ru.nl/\" target=\"_blank\"\u003ehttps://admin.ru.nl/\u003c/a\u003e BASS is available again via\n\u003ca href=\"https://bassruap01.uci.ru.nl:8010/OA_HTML/AppsLocalLogin.jsp\" target=\"_blank\"\u003ehttps://bassruap01.uci.ru.nl:8010/OA_HTML/AppsLocalLogin.jsp\u003c/a\u003e\u003c/p\u003e","title":"BASS RU problem"},{"content":"During the renewal of the OpenID server a configuration error was made. When users reported problems logging in, we started searching for the origin of problem. When it was found, it could easily be corrected and the server could be restarted with the correct configuration.\n","permalink":"https://cncz.science.ru.nl/cpk/1021/","summary":"\u003cp\u003eDuring the renewal of the \u003ca href=\"https://openid.science.ru.nl/\" target=\"_blank\"\u003eOpenID\u003c/a\u003e server\na configuration error was made. When users reported problems logging in,\nwe started searching for the origin of problem. When it was found, it\ncould easily be corrected and the server could be restarted with the\ncorrect configuration.\u003c/p\u003e","title":"OpenID server problem"},{"content":"The fileserver crashed. After a reboot everything was back to normal.\n","permalink":"https://cncz.science.ru.nl/cpk/1020/","summary":"\u003cp\u003eThe fileserver crashed. After a reboot everything was back to normal.\u003c/p\u003e","title":"Homeserver bundle crashed"},{"content":"The fileserver failed to reboot during the regular Monday morning shutdown schedule. It was possible to gain access to the system console only after having removed all power from the chassis. Snapshots were removed using the rescue reboot but rebooting the machine resulted in a faulty filesystem. We were able to boot the system after all filesystems had been checked offline. These actions resulted in a unusual long downtime.\n","permalink":"https://cncz.science.ru.nl/cpk/1018/","summary":"\u003cp\u003eThe fileserver failed to reboot during the regular Monday morning\nshutdown schedule. It was possible to gain access to the system console\nonly after having removed all power from the chassis. Snapshots were\nremoved using the rescue reboot but rebooting the machine resulted in a\nfaulty filesystem. We were able to boot the system after all filesystems\nhad been checked offline. These actions resulted in a unusual long\ndowntime.\u003c/p\u003e","title":"Homeserver bundle failed reboot"},{"content":"Problem: Crash due to defective disk Solution: Deactivated disk using hot spare and reboot\n","permalink":"https://cncz.science.ru.nl/cpk/1019/","summary":"\u003cp\u003eProblem: Crash due to defective disk Solution: Deactivated disk using\nhot spare and reboot\u003c/p\u003e","title":"Fileserver stack crashed due to failed hard disk"},{"content":"The fileserver failed the regular Monday morning reboot. Only after a rescue boot and a manual removal of all snapshots rebooting the machine worked.\n","permalink":"https://cncz.science.ru.nl/cpk/1017/","summary":"\u003cp\u003eThe fileserver failed the regular Monday morning reboot. Only after a\nrescue boot and a manual removal of all snapshots rebooting the machine\nworked.\u003c/p\u003e","title":"Homeserver bundle failed reboot"},{"content":"Problem: Stack: Crash due to failing disk. Solution: Deactivated disk using hot spare\n","permalink":"https://cncz.science.ru.nl/cpk/1016/","summary":"\u003cp\u003eProblem: Stack: Crash due to failing disk. Solution: Deactivated disk\nusing hot spare\u003c/p\u003e","title":"Disk server stack offline"},{"content":"Pile did not shutdown properly during weekly reboot due to a kernel panic. Solution: Executed power-cycle of the system\n","permalink":"https://cncz.science.ru.nl/cpk/1015/","summary":"\u003cp\u003ePile did not shutdown properly during weekly reboot due to a kernel\npanic. Solution: Executed power-cycle of the system\u003c/p\u003e","title":"Disk server pile offline"},{"content":"Again a Science user supplied his Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam.\nPLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1014/","summary":"\u003cp\u003eAgain a Science user supplied his Science password to phishers. We\nnotice that because Internet criminals use these passwords to get into\nthe Science mail servers (horde webmail, smtp) in order to send spam.\u003c/p\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"Mail problems after supplying password to phishers"},{"content":"Was waiting for interactive input after reporting a warning (^d)\n","permalink":"https://cncz.science.ru.nl/cpk/1012/","summary":"\u003cp\u003eWas waiting for interactive input after reporting a warning (^d)\u003c/p\u003e","title":"Disk server pile offline"},{"content":"While performing maintenance (removing a network card) a network cable was not inserted correctly.\n","permalink":"https://cncz.science.ru.nl/cpk/1013/","summary":"\u003cp\u003eWhile performing maintenance (removing a network card) a network cable\nwas not inserted correctly.\u003c/p\u003e","title":"File server miii no private network"},{"content":"Yesterday Matlab R2013a has been installed. Today at 13:00 hours many servers started to automatically copy this 5.4 GB to their local disc. Some parts of the network were overloaded by all these copying, which made accessing the network slow for many users. The distribution of this software will now be scheduled to happen over a longer period, primarily outside of working hours.\n","permalink":"https://cncz.science.ru.nl/cpk/1011/","summary":"\u003cp\u003eYesterday Matlab R2013a has been installed. Today at 13:00 hours many\nservers started to automatically copy this 5.4 GB to their local disc.\nSome parts of the network were overloaded by all these copying, which\nmade accessing the network slow for many users. The distribution of this\nsoftware will now be scheduled to happen over a longer period, primarily\noutside of working hours.\u003c/p\u003e","title":"Network problems due to installation of Matlab R2013a"},{"content":"Monday, March 4th 2013 at 18:00 hours, the number of IP numbers that is available in the FNWI buildings for ru-wlan and Science will be doubled. Because ru-wlan moves to a new range, users of ru-wlan will lose connectivity for at most 15 minutes. There was already a plan to replace ru-wlan and Science within the FNWI buildings by the RU-wide Eduroam and ru-wlan, but the wireless network usage has grown so fast that we can not wait for this plan to be realized. Last week some wireless users at times could not even get an IP address, although the lease time had been brought down to 30 minutes. Therefore this temporary measure became necessary on such short notice.\n","permalink":"https://cncz.science.ru.nl/cpk/1010/","summary":"\u003cp\u003eMonday, March 4th 2013 at 18:00 hours, the number of IP numbers that is\navailable in the FNWI buildings for ru-wlan and Science will be doubled.\nBecause ru-wlan moves to a new range, users of ru-wlan will lose\nconnectivity for at most 15 minutes. There was already a plan to replace\nru-wlan and Science within the FNWI buildings by the RU-wide Eduroam and\nru-wlan, but the wireless network usage has grown so fast that we can\nnot wait for this plan to be realized. Last week some wireless users at\ntimes could not even get an IP address, although the lease time had been\nbrought down to 30 minutes. Therefore this temporary measure became\nnecessary on such short notice.\u003c/p\u003e","title":"More IP addresses for ru-wlan and Science (wireless)"},{"content":"On Monday feb 18 at 6:00 pm there will be some maintenance at the wireless network which will effect the following locations at Toernooiveld:\nFNWI cellar A1 FEL Huygens: Library of Science, terrace behind Huygens, cantine, room HG-1.132 KDV1 en KDV2 Linnaeus building Logistic Centre Mercator I Mercator II, ground floor and 7nd floor Mercator III, 2nd floor Transitorium FNWI (ACSW and FELIX) UBC\nWe expect the service will be completely available again within 30 minutes.\n","permalink":"https://cncz.science.ru.nl/cpk/1009/","summary":"\u003cp\u003eOn Monday feb 18 at 6:00 pm there will be some maintenance at the\nwireless network which will effect the following locations at\nToernooiveld:\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eFNWI cellar A1\u003c/code\u003e \u003ccode\u003eFEL\u003c/code\u003e\n\u003ccode\u003eHuygens: Library of Science, terrace behind Huygens, cantine, room HG-1.132\u003c/code\u003e\n\u003ccode\u003eKDV1 en KDV2\u003c/code\u003e \u003ccode\u003eLinnaeus building\u003c/code\u003e \u003ccode\u003eLogistic Centre\u003c/code\u003e \u003ccode\u003eMercator I\u003c/code\u003e\n\u003ccode\u003eMercator II, ground floor and 7nd floor\u003c/code\u003e \u003ccode\u003eMercator III, 2nd floor\u003c/code\u003e\n\u003ccode\u003eTransitorium FNWI (ACSW and FELIX)\u003c/code\u003e \u003ccode\u003eUBC\u003c/code\u003e\u003c/p\u003e\n\u003cp\u003eWe expect the service will be completely available again within 30\nminutes.\u003c/p\u003e","title":"Short interval in wireless network service"},{"content":"The last few days three Science users have supplied their Science password to phishers. We notice that because Internet criminals use these passwords to get into the Science mail servers (horde webmail, smtp) in order to send spam. This time they even used a fake copy of the horde Science webmail website. The big differences with the real horde Science webmail website are:\nthe URL is not within science.ru.nl the connection is not a secure https connection, there is no lock the username and password do not arrive at C\u0026amp;CZ servers, but in the hands of Internet criminals. PLEASE: do not naively click on a link in an e-mail!\n","permalink":"https://cncz.science.ru.nl/cpk/1008/","summary":"\u003cp\u003eThe last few days three Science users have supplied their Science\npassword to phishers. We notice that because Internet criminals use\nthese passwords to get into the Science mail servers (horde webmail,\nsmtp) in order to send spam. This time they even used a fake copy of the\nhorde Science webmail website. The big differences with the real horde\nScience webmail website are:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe URL is not within science.ru.nl\u003c/li\u003e\n\u003cli\u003ethe connection is not a secure https connection, there is no lock\u003c/li\u003e\n\u003cli\u003ethe username and password do not arrive at C\u0026amp;CZ servers, but in the\nhands of Internet criminals.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003ePLEASE: do not naively click on a link in an e-mail!\u003c/p\u003e","title":"Mail problems after supplying password to phishers"},{"content":"On Monday, January 28th 2013 at 8:00 am, one of the servers that is being used by the wireless network of the RU, will be replaced. This replacement will affect you as a user of the wireless networks ru-wlan and eduroam: There will appear a new certificate when connecting. You can just accept this, after which the connection should work. If this appears not to be the case, then it’s best that you remove your old Eduroam- respectively your old RU-WLAN settings first to activate the new connection .\nSpecifically for iPhone / iPad users: We recommend that you first remove your old Eduroam- respectively your old RU-WLAN profile before activating the new connection without a profile. If that unexpectedly fails, please review the information on www.ru.nl/wireless for iPhone/iPads. If necessary, you can also download a new profile from that site.\n","permalink":"https://cncz.science.ru.nl/cpk/1007/","summary":"\u003cp\u003eOn Monday, January 28th 2013 at 8:00 am, one of the servers that is\nbeing used by the wireless network of the RU, will be replaced. This\nreplacement will affect you as a user of the wireless networks ru-wlan\nand eduroam: There will appear a new certificate when connecting. You\ncan just accept this, after which the connection should work. If this\nappears not to be the case, then it’s best that you remove your old\nEduroam- respectively your old RU-WLAN settings first to activate the\nnew connection .\u003c/p\u003e","title":"New Radius server for ru-wlan and eduroam (wireless)"},{"content":"Because the file server crashed, it had to be rebooted.\n","permalink":"https://cncz.science.ru.nl/cpk/1006/","summary":"\u003cp\u003eBecause the file server crashed, it had to be rebooted.\u003c/p\u003e","title":"Homeserver bundle crashed"},{"content":"Older Fedora desktop PC’s may experience startup problems after an upgrade of one of our LDAP servers. A fix is available and has been applied. If you still encounter this problem, please contact C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/cpk/1005/","summary":"\u003cp\u003eOlder Fedora desktop PC’s may experience startup problems after an\nupgrade of one of our LDAP servers. A fix is available and has been\napplied. If you still encounter this problem, please contact C\u0026amp;CZ.\u003c/p\u003e","title":"LDAP server vernieuwd"},{"content":"Horde webmail again appeared to be misused for sending spam. This could happen because a naive user gave the Science password to phishers/spammers. After first stopping horde, early Friday morning we disabled the account of the naive user and restarted horde. Saturday morning it appeared that this short spam-outbreak had caused administrators of hotmail.com to add our mail server to their blacklist. Therefore we switched the IP-number of this mail server Saturday morning.\n","permalink":"https://cncz.science.ru.nl/cpk/1004/","summary":"\u003cp\u003eHorde webmail again appeared to be misused for sending spam. This could\nhappen because a naive user gave the Science password to\nphishers/spammers. After first stopping horde, early Friday morning we\ndisabled the account of the naive user and restarted horde. Saturday\nmorning it appeared that this short spam-outbreak had caused\nadministrators of hotmail.com to add our mail server to their blacklist.\nTherefore we switched the IP-number of this mail server Saturday\nmorning.\u003c/p\u003e","title":"Mail problems after supplying password to phishers"},{"content":"Because the file server refuses to accept a spare disk, it needs a reboot.\n","permalink":"https://cncz.science.ru.nl/cpk/1003/","summary":"\u003cp\u003eBecause the file server refuses to accept a spare disk, it needs a\nreboot.\u003c/p\u003e","title":"Homeserver bundle will be rebooted"},{"content":"At the moment, we are solving the problem.\n","permalink":"https://cncz.science.ru.nl/cpk/1002/","summary":"\u003cp\u003eAt the moment, we are solving the problem.\u003c/p\u003e","title":"Homeserver bundle unavailable"},{"content":"During the night of wednesday on thursday a power outage resulted in a network outage in the basement computing facilities. The power was restored to the network equipment using a bypass thus circumventing the UPS at about 09:15. Further checks implied that most servers had not become powerless so that most services became automatically available again. Network drivers on “bundle” had to be restarted in order to get access to home directories for a large number of users. Furthermore, several websites had to be restarted which made it possible for PC’s to boot properly. During the day, an unrelated issue with the RAID storage of “plus” has been fixed as well granting access to the following network shares: sofie, ams*, molchem, mb*, encapson, milkun4, snn, neuropi, digicd. carta, … Since wireless devices were unable to acquire IP addresses, i.e. gain access to the network, a split-brain situation was diagnosed within the DHCP service which was resolved around 13:00.\n","permalink":"https://cncz.science.ru.nl/cpk/1001/","summary":"\u003cp\u003eDuring the night of wednesday on thursday a power outage resulted in a\nnetwork outage in the basement computing facilities. The power was\nrestored to the network equipment using a bypass thus circumventing the\nUPS at about 09:15. Further checks implied that most servers had not\nbecome powerless so that most services became automatically available\nagain. Network drivers on “bundle” had to be restarted in order to get\naccess to home directories for a large number of users. Furthermore,\nseveral websites had to be restarted which made it possible for PC’s to\nboot properly. During the day, an unrelated issue with the RAID storage\nof “plus” has been fixed as well granting access to the following\nnetwork shares: sofie, ams*, molchem, mb*, encapson, milkun4, snn,\nneuropi, digicd. carta, … Since wireless devices were unable to acquire\nIP addresses, i.e. gain access to the network, a split-brain situation\nwas diagnosed within the DHCP service which was resolved around 13:00.\u003c/p\u003e","title":"Services unavailable due to power and network outage"},{"content":"Next Friday morning, the home server “pile” will be rebooted. There are problems with the snapshots, which could make a reboot take more time. Therefore we schedule the reboot for early next Friday.\n","permalink":"https://cncz.science.ru.nl/cpk/1000/","summary":"\u003cp\u003eNext Friday morning, the home server “pile” will be rebooted. There are\nproblems with the \u003ca href=\"/howto/backup/\"\u003esnapshots\u003c/a\u003e, which could make a\nreboot take more time. Therefore we schedule the reboot for early next\nFriday.\u003c/p\u003e","title":"Announced downtime: home server \"pile\" down for reboot"},{"content":"Yesterday evening, horde webmail appeared to be misused for sending spam. This could happen because a naive user gave the Science password to spammers. First we stopped horde. This morning we disabled the account of the naive user and restarted horde.\n","permalink":"https://cncz.science.ru.nl/cpk/997/","summary":"\u003cp\u003eYesterday evening, horde webmail appeared to be misused for sending\nspam. This could happen because a naive user gave the Science password\nto spammers. First we stopped horde. This morning we disabled the\naccount of the naive user and restarted horde.\u003c/p\u003e","title":"Horde webmail server down because of spam"},{"content":"During the weekly reboot (monday mornings), the server got stuck in the BIOS.\n","permalink":"https://cncz.science.ru.nl/cpk/995/","summary":"\u003cp\u003eDuring the weekly reboot (monday mornings), the server got stuck in the\nBIOS.\u003c/p\u003e","title":"Disk server \"Plenty\" offline"},{"content":"","permalink":"https://cncz.science.ru.nl/cpk/996/","summary":"","title":"Disk server \"Stack\" offline"},{"content":"In order to test new software, the Peage top-up unit near the Huygens restaurant was switched to maintenance mode. This unit is not used often yet, therefore this wil not have caused problems. Students that wanted to top-up their Peage account, could do that only elsewhere on campus. See the http://www.ru.nl/peage Peage website], locations are the halls of the Erasmus, Spinoza and Library buildings.\n","permalink":"https://cncz.science.ru.nl/cpk/999/","summary":"\u003cp\u003eIn order to test new software, the \u003ca href=\"http://www.ru.nl/peage\" target=\"_blank\"\u003ePeage\u003c/a\u003e\ntop-up unit near the Huygens restaurant was switched to maintenance\nmode. This unit is not used often yet, therefore this wil not have\ncaused problems. Students that wanted to top-up their Peage account,\ncould do that only elsewhere on campus. See the \u003ca href=\"http://www.ru.nl/peage\" target=\"_blank\"\u003ehttp://www.ru.nl/peage\u003c/a\u003e\nPeage website], locations are the halls of the Erasmus, Spinoza and\nLibrary buildings.\u003c/p\u003e","title":"Peage top-up unit near Huygens restaurant in maintenance"},{"content":"PC workstation Everyone interested in buying a PC will be interested in reading the information about the default supplier of PCs. C\u0026amp;CZ can help with the installation or do this completely. One can choose between MS-Windows and Ubuntu Linux. Information about the repair procedure is also available.\n","permalink":"https://cncz.science.ru.nl/howto/hardware-werkplekken/","summary":"\u003ch2 id=\"pc-workstation\"\u003ePC workstation\u003c/h2\u003e\n\u003cp\u003eEveryone interested in buying a PC will be interested in reading the\ninformation about the \u003ca href=\"/howto/huisleverancier-pcs/\"\u003edefault supplier of PCs\u003c/a\u003e. C\u0026amp;CZ can help with the\n\u003ca href=\"/howto/installeren-werkplek/\"\u003einstallation\u003c/a\u003e or do this completely.\nOne can choose between \u003ca href=\"/howto/windows-beheerde-werkplek/\"\u003eMS-Windows\u003c/a\u003e\nand \u003ca href=\"/howto/unix/\"\u003eUbuntu Linux\u003c/a\u003e. Information about the \u003ca href=\"/howto/reparaties/\"\u003erepair\nprocedure\u003c/a\u003e is also available.\u003c/p\u003e","title":"Hardware werkplekken"},{"content":"Next Tuesday morning, the home server “pile” will be replaced by a new, more powerful server. Because the data have been synchronized with the new server, there will not be much downtime.\n","permalink":"https://cncz.science.ru.nl/cpk/994/","summary":"\u003cp\u003eNext Tuesday morning, the home server “pile” will be replaced by a new,\nmore powerful server. Because the data have been synchronized with the\nnew server, there will not be much downtime.\u003c/p\u003e","title":"Announced downtime: home server \"pile\" down for replacement"},{"content":"The downtime below has been postponed, because we had a few questions on the new server, that could not be answered in time. To be continued…\nNext Tuesday morning, the home server “pile” will be replaced by a new, more powerful server. Because the data have been synchronized with the new server, there will not be much downtime. The new server should be very dependable: hardware RAID-6, double processors and power supplies and a 5-year support contract from the supplier. The performance has improved, e.g. by using hardware RAID with a 1 GB write cache with battery backup.\n","permalink":"https://cncz.science.ru.nl/cpk/993/","summary":"\u003cp\u003eThe downtime below has been postponed, because we had a few questions on\nthe new server, that could not be answered in time. To be continued…\u003c/p\u003e\n\u003cp\u003eNext Tuesday morning, the home server “pile” will be replaced by a new,\nmore powerful server. Because the data have been synchronized with the\nnew server, there will not be much downtime. The new server should be\nvery dependable: hardware\n\u003ca href=\"http://en.wikipedia.org/wiki/RAID#RAID_6_replacing_RAID_5_in_enterprise_environments\" target=\"_blank\"\u003eRAID-6\u003c/a\u003e,\ndouble processors and power supplies and a 5-year support contract from\nthe supplier. The performance has improved, e.g. by using hardware RAID\nwith a 1 GB \u003ca href=\"http://serverfault.com/questions/65096/battery-backed-write-cache\" target=\"_blank\"\u003ewrite cache with battery\nbackup\u003c/a\u003e.\u003c/p\u003e","title":"Postponed: Announced downtime: home server \"pile\" down for replacement"},{"content":"This morning, horde webmail appeared to be misused for sending spam. This could happen because naive users gave their Science password to spammers. After we found out who the users were and had them change their password, we decide to also replace a defective cpu fan. Therefore also Mailman mailing lists will be down from 13:00 to 14:00 hours.\n","permalink":"https://cncz.science.ru.nl/cpk/992/","summary":"\u003cp\u003eThis morning, horde webmail appeared to be misused for sending spam.\nThis could happen because naive users gave their Science password to\nspammers. After we found out who the users were and had them change\ntheir password, we decide to also replace a defective cpu fan. Therefore\nalso Mailman mailing lists will be down from 13:00 to 14:00 hours.\u003c/p\u003e","title":"Partly announced downtime for mailman + horde webmail server"},{"content":"This morning, users reported that mail from smtp.science.ru.nl to hotmail users was being bounced by hotmail. We have tried to let the hotmail administrators change this fast, but when this took too long, we changed the IP-number of our smtp-server.\n","permalink":"https://cncz.science.ru.nl/cpk/991/","summary":"\u003cp\u003eThis morning, users reported that mail from smtp.science.ru.nl to\nhotmail users was being bounced by hotmail. We have tried to let the\nhotmail administrators change this fast, but when this took too long, we\nchanged the IP-number of our smtp-server.\u003c/p\u003e","title":"SMTP server blacklisted by MS Live Hotmail"},{"content":"A hardware failure of a boot disk of the fileserver stack was reported Friday morning June 22. We decided to repair this after working hours. Thus at approximately 17:00 the defective boot disk was removed from the machine and replaced by a spare one. Enabling the disk, making it bootable, restoring file systems and rebooting the machine (after removing all snapshots) took a lot of time. When this was resolved Friday evening, the NFS/SMB fileservice was not active on the mounted filesystems. It took a reboot Sunday evening to resolve all problems.\n","permalink":"https://cncz.science.ru.nl/cpk/990/","summary":"\u003cp\u003eA hardware failure of a boot disk of the fileserver stack was reported\nFriday morning June 22. We decided to repair this after working hours.\nThus at approximately 17:00 the defective boot disk was removed from the\nmachine and replaced by a spare one. Enabling the disk, making it\nbootable, restoring file systems and rebooting the machine (after\nremoving all snapshots) took a lot of time. When this was resolved\nFriday evening, the NFS/SMB fileservice was not active on the mounted\nfilesystems. It took a reboot Sunday evening to resolve all problems.\u003c/p\u003e","title":"Planned service interruption: file server with problems"},{"content":"A hardware failure of the server poly was reported at 2012-06-21 14:12. After a restart of the machine, it stopped working again. No more recoveries were attempted and an identical spare machine was outfitted with the disks from the defective server. Disks had to be synchronized before making the machine available again.\n","permalink":"https://cncz.science.ru.nl/cpk/989/","summary":"\u003cp\u003eA hardware failure of the server poly was reported at 2012-06-21 14:12.\nAfter a restart of the machine, it stopped working again. No more\nrecoveries were attempted and an identical spare machine was outfitted\nwith the disks from the defective server. Disks had to be synchronized\nbefore making the machine available again.\u003c/p\u003e","title":"Tracelab server poly defective"},{"content":"A power failure in a rack in a server room brought some C\u0026amp;CZ servers down. After less than two hours all problems were dealt with. Affected systems ware mainly: postvak (Science mail server), bundle (user homedisk), heap/stack (network discs), resser/kookpunt/brievenbus/rustug (mail transport smtp servers)\n","permalink":"https://cncz.science.ru.nl/cpk/988/","summary":"\u003cp\u003eA power failure in a rack in a server room brought some C\u0026amp;CZ servers\ndown. After less than two hours all problems were dealt with. Affected\nsystems ware mainly: postvak (Science mail server), bundle (user\nhomedisk), heap/stack (network discs), resser/kookpunt/brievenbus/rustug\n(mail transport smtp servers)\u003c/p\u003e","title":"Servers without electric power"},{"content":"A defective hard disc has been replaced in a server, but the server needs to be rebooted to ensure that this is reboot proof. The MySQL database of roughly 70 websites will therefore be down for a short time. Since this server also provides the Kerberos authentication for Linux clients, Linux clients might encounter service interruptions during a short period.\n","permalink":"https://cncz.science.ru.nl/cpk/987/","summary":"\u003cp\u003eA defective hard disc has been replaced in a server, but the server\nneeds to be rebooted to ensure that this is reboot proof. The MySQL\ndatabase of roughly 70 websites will therefore be down for a short time.\nSince this server also provides the Kerberos authentication for Linux\nclients, Linux clients might encounter service interruptions during a\nshort period.\u003c/p\u003e","title":"Planned Service: website-databases and maybe Linux clients"},{"content":"The UCI network management reports that at this moment the incoming version of Eduroam doesn’t work for iPhone/iPad/iPod. A solution is being worked upon. Eduroam incoming means that one uses the wireless network of a remote institute, with authentication (login/password) being checked by RU or Science.\n","permalink":"https://cncz.science.ru.nl/cpk/998/","summary":"\u003cp\u003eThe \u003ca href=\"http://www.ru.nl/uci\" target=\"_blank\"\u003eUCI network management\u003c/a\u003e reports that at this\nmoment the\n\u003ca href=\"http://www.ru.nl/gdi/voorzieningen/campusbrede-systemen/eduroam/\" target=\"_blank\"\u003eincoming\u003c/a\u003e\nversion of \u003ca href=\"http://www.eduroam.nl\" target=\"_blank\"\u003eEduroam\u003c/a\u003e doesn’t work for\niPhone/iPad/iPod. A solution is being worked upon. Eduroam incoming\nmeans that one uses the wireless network of a remote institute, with\nauthentication (login/password) being checked by RU or Science.\u003c/p\u003e","title":"Eduroam incoming doesn't work for iPhone/iPad/iPod"},{"content":"Thursday July 7, around 13.00 hours the server “plenty” could not be reached. Because this server serves the “xpsoftware” share for the Managed Windows PC’s, all these PC’s had a problem. After the server was restarted and the disks had been checked, it was available again at 14:26.\n","permalink":"https://cncz.science.ru.nl/cpk/986/","summary":"\u003cp\u003eThursday July 7, around 13.00 hours the server “plenty” could not be\nreached. Because this server serves the “xpsoftware” share for the\n\u003ca href=\"/howto/windows-beheerde-werkplek/\"\u003eManaged Windows PC’s\u003c/a\u003e, all these\nPC’s had a problem. After the server was restarted and the disks had\nbeen checked, it was available again at 14:26.\u003c/p\u003e","title":"Windows server \"plenty\" with xpsoftware unavailable"},{"content":"In order to improve the cooling of a server room, we plan to move three racks of Science servers a few meters on Sunday morning, July 3. We will have to switch off a lot of servers temporarily. Therefore several services will be unavailable some time starting July 3, 09:00 hours. We expect the downtime will last until 10:00 hours for servers with a lot of different users. The cn compute cluster will probably be fully operational again at 12:00 hours.\nThe servers/services affected are:\nfileservers: plenty/pile/bundle with shares like: amsbackup2 bbb-priv botany bsweet comsol exoarchief gi3 hfml-data ifl iris lambiek mestrelab mi1/2/3 molchem2 molphtec morph multimedia olsen pcb planthgl sdisk share snn2 spmdata1 tdisk tece temp wallpaper xpcursus xpsoftware potkast: films via Blackboard ts2: Windows Terminal Server lilo1: Linux Login Server, alternative: lilo/lilo2 cn compute cluster horde webmail License server for: Comsol\nWith apologies for the inconvenience C\u0026amp;CZ\n","permalink":"https://cncz.science.ru.nl/cpk/985/","summary":"\u003cp\u003eIn order to improve the cooling of a server room, we plan to move three\nracks of Science servers a few meters on Sunday morning, July 3. We will\nhave to switch off a lot of servers temporarily. Therefore several\nservices will be unavailable some time starting July 3, 09:00 hours. We\nexpect the downtime will last until 10:00 hours for servers with a lot\nof different users. The cn compute cluster will probably be fully\noperational again at 12:00 hours.\u003c/p\u003e","title":"Downtime Science servers: Sunday July 3, 09:00 - 12:00 hours"},{"content":"This morning, in the network hub for Huygens South a UPS (battery power supply) went down, which made a set of network switches loose power. Because of this, users in Huygens wing 1 and spin-off companies lost their connection to the network. After bypassing the UPS, everything was up and running again at 11:30. We are still searching for the exact origin of this outage.\n","permalink":"https://cncz.science.ru.nl/cpk/984/","summary":"\u003cp\u003eThis morning, in the network hub for Huygens South a UPS (battery power\nsupply) went down, which made a set of network switches loose power.\nBecause of this, users in Huygens wing 1 and spin-off companies lost\ntheir connection to the network. After bypassing the UPS, everything was\nup and running again at 11:30. We are still searching for the exact\norigin of this outage.\u003c/p\u003e","title":"Network outage"},{"content":"You can’t reach certain fixed phones at the university right now, mobile phones and Skype do work ok though.\n","permalink":"https://cncz.science.ru.nl/cpk/981/","summary":"\u003cp\u003eYou can’t reach certain fixed phones at the university right now, mobile\nphones and Skype do work ok though.\u003c/p\u003e","title":"Fixed phone problem"},{"content":"A backup cooling system will be installed in our main computer room. Therefore the air conditioning system must be switched off, which means that most of the computer facilities in this room must be shut down. This includes the cluster nodes cn00 through cn53 and many of the web- and file- (network share) servers. It is advised to expect a very limited service level. We will try to keep all home directories and the mail system available. For detailed information about the impact please contact C\u0026amp;CZ.\n","permalink":"https://cncz.science.ru.nl/cpk/983/","summary":"\u003cp\u003eA backup cooling system will be installed in our main computer room.\nTherefore the air conditioning system must be switched off, which means\nthat most of the computer facilities in this room must be shut down.\nThis includes the cluster nodes cn00 through cn53 and many of the web-\nand file- (network share) servers. It is advised to expect a very\nlimited service level. We will try to keep all home directories and the\nmail system available. For detailed information about the impact please\n\u003ca href=\"/howto/contact/\"\u003econtact\u003c/a\u003e C\u0026amp;CZ.\u003c/p\u003e","title":"Planned Service: Limited computer services"},{"content":"Printer lp5 has been moved to HG00.089. You can’t use this printer at the moment, there’s a problem with the power supply unit.\n","permalink":"https://cncz.science.ru.nl/cpk/982/","summary":"\u003cp\u003ePrinter lp5 has been moved to HG00.089. You can’t use this printer at\nthe moment, there’s a problem with the power supply unit.\u003c/p\u003e","title":"Printer lp5"},{"content":" abcTajpu Copy Sent to Current Folderpane Tools GMailUI Lightning Provider for Google Calendar New Mail Icon Nostalgy Quicktext Signature Switch ThunderBrowse Xnote MailClassifier Tag bar Priority Switcher MailTweak Mail Redirect View Headers Toggle Button Display Mail User Agent Extension FolderFlags More add-ons can be found at addons.mozilla.org.\n","permalink":"https://cncz.science.ru.nl/howto/thunderbird-add-ons/","summary":"\u003cul\u003e\n\u003cli\u003eabcTajpu\n\u003cul\u003e\n\u003cli\u003eCopy Sent to Current\u003c/li\u003e\n\u003cli\u003eFolderpane Tools\u003c/li\u003e\n\u003cli\u003eGMailUI\u003c/li\u003e\n\u003cli\u003eLightning\u003c/li\u003e\n\u003cli\u003eProvider for Google Calendar\u003c/li\u003e\n\u003cli\u003eNew Mail Icon\u003c/li\u003e\n\u003cli\u003eNostalgy\u003c/li\u003e\n\u003cli\u003eQuicktext\u003c/li\u003e\n\u003cli\u003eSignature Switch\u003c/li\u003e\n\u003cli\u003eThunderBrowse\u003c/li\u003e\n\u003cli\u003eXnote\u003c/li\u003e\n\u003cli\u003eMailClassifier\u003c/li\u003e\n\u003cli\u003eTag bar\u003c/li\u003e\n\u003cli\u003ePriority Switcher\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"http://journal.mozdev.org/mailtweak.html\" target=\"_blank\"\u003eMailTweak\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eMail Redirect\u003c/li\u003e\n\u003cli\u003eView Headers Toggle Button\u003c/li\u003e\n\u003cli\u003eDisplay Mail User Agent Extension\u003c/li\u003e\n\u003cli\u003eFolderFlags\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eMore add-ons can be found at \u003ca href=\"https://addons.mozilla.org/en-US/thunderbird/\" target=\"_blank\"\u003eaddons.mozilla.org\u003c/a\u003e.\u003c/p\u003e","title":"Thunderbird Add-ons"},{"content":"Automatically respond to incoming email The settings to automatically respond to incoming email can be changed at the Do-It-Yourself website.\nIf a (vacation) message is sent for incoming email, each sender of a mail that is directly sent to you (no BCC:), gets only once a mail with the text you have specified.\nIf one does not want to send automatic replies anymore, the (vacation) message is saved for later use.\n","permalink":"https://cncz.science.ru.nl/howto/email-vakantie/","summary":"\u003ch2 id=\"automatically-respond-to-incoming-email\"\u003eAutomatically respond to incoming email\u003c/h2\u003e\n\u003cp\u003eThe settings to automatically respond to incoming email can be changed\nat the \u003ca href=\"http://dhz.science.ru.nl\" target=\"_blank\"\u003eDo-It-Yourself website\u003c/a\u003e.\u003c/p\u003e\n\u003cp\u003eIf a (vacation) message is sent for incoming email, each sender of a\nmail that is directly sent to you (no BCC:), gets only once a mail with\nthe text you have specified.\u003c/p\u003e\n\u003cp\u003eIf one does not want to send automatic replies anymore, the (vacation)\nmessage is saved for later use.\u003c/p\u003e","title":"Email vakantie"},{"content":"2 fast-wide 9GB scsi disks are attached to the wnhome wide-scsi controller plugged in:\n1 for NetPCs (replacing /vol/netpc from wn0) 1 as staging disk for Amanda (new backup software) Info\nThis is one of the first CPK\u0026rsquo;s we found in our mailman archive.\nWe didn\u0026rsquo;t bother to convert the complete archive to individual markdown messages.\nThese are the ~1k missing CPK messages.\n","permalink":"https://cncz.science.ru.nl/cpk/0/","summary":"\u003cp\u003e2 fast-wide 9GB scsi disks are attached to the\nwnhome wide-scsi controller plugged in:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 for NetPCs (replacing \u003ccode\u003e/vol/netpc\u003c/code\u003e from \u003ccode\u003ewn0\u003c/code\u003e)\u003c/li\u003e\n\u003cli\u003e1 as staging disk for Amanda (new backup software)\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv\u003e\u003csvg width=\"0\" height=\"0\" display=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003csymbol id=\"tip-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.967-111.033 248-248 248S8 392.967 8 256 119.033 8 256 8s248 111.033 248 248zM227.314 387.314l184-184c6.248-6.248 6.248-16.379 0-22.627l-22.627-22.627c-6.248-6.249-16.379-6.249-22.628 0L216 308.118l-70.059-70.059c-6.248-6.248-16.379-6.248-22.628 0l-22.627 22.627c-6.248 6.248-6.248 16.379 0 22.627l104 104c6.249 6.249 16.379 6.249 22.628.001z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"note-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"warning-notice\" viewBox=\"0 0 576 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"/\u003e\u003c/symbol\u003e\u003csymbol id=\"info-notice\" viewBox=\"0 0 512 512\" preserveAspectRatio=\"xMidYMid meet\"\u003e\u003cpath d=\"M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 110c23.196 0 42 18.804 42 42s-18.804 42-42 42-42-18.804-42-42 18.804-42 42-42zm56 254c0 6.627-5.373 12-12 12h-88c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h12v-64h-12c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h64c6.627 0 12 5.373 12 12v100h12c6.627 0 12 5.373 12 12v24z\"/\u003e\u003c/symbol\u003e\u003c/svg\u003e\u003c/div\u003e\u003cdiv class=\"notice info\" \u003e\n\u003cp class=\"first notice-title\"\u003e\u003cspan class=\"icon-notice baseline\"\u003e\u003csvg\u003e\u003cuse href=\"#info-notice\"\u003e\u003c/use\u003e\u003c/svg\u003e\u003c/span\u003eInfo\u003c/p\u003e","title":"Plugging in extra disks to wnhome"},{"content":" Institute/Service Department Lab Manager(s) Donders Centre for Neuroscience DCN Section Neurobiology Debbie Tilburg-Ouwens DCN Section Neurophysics Debbie Tilburg-Ouwens High Field Magnet Laboratory \u0026 FELIX HFML/FELIX FELIX Facility Jonathan MartensBritta Redlich HFML/FELIX High Field Magnet Laboratory Hans Engelkamp Institute for Molecules and Materials IMM Analytical Chemistry \u0026 Chemometrics Joris Meurs IMM Applied Materials Science Peter Mulder IMM Biophysical Chemistry Frank NelissenAmrah Weijn IMM Biomolecular Chemistry Amrah WeijnFrank Nelissen IMM Molecular and Laser Physics Andre van Roij IMM Molecular Chemistry Cluster Samuel BosmaJan Dommerholt IMM NMR Research Centre Ruud Aspers IMM Physical Chemistry of Soft Matter Ruth Croters IMM Scanning Probe Microscopy Henning von Allwörden IMM Solid State Chemistry Erik de Ronde Paul Tinnemans IMM Spectroscopy of Cold Molecules Andre van Roij IMM Utlrafast Spectroscopy of Correlated Materials Chris Berkhout Radboud Institute for Biological and Environmental Sciences RIBES Ecology Niels WagemakerAnnemiek Tiekstra RIBES Environmental Sciences Martien GraumansKatinka van de Pas-Schoonen RIBES Experimental Garden and Genebank ... RIBES Microbiology Katinka van de Pas-SchoonenRob de Graaf RIBES Plant \u0026 Animal Biology Jan ZethofDaan van den Brink RIBES RIBES Radio Lab Jan Zethof Educational Institutes OBW Education Labs Biosciences Lydia Ketelaars Guus Middelbeek OMW Education Labs Molecular Sciences Tom Bloemberg Luuk van Summeren ONS Education Labs Physics Luuk van Summeren Radboud Institute for Molcular Life Sciences RIMLS Molecular Biology Anita Kaan RIMLS Molecular Developmental Biology Siebe van Genesen RIMLS Proteomics and Chromatin Biology Pascal Jansen Supporting Services GI General Instrumentation Sebastian Krosse Housing \u0026 Logistics Logistics Centre Ruud PatingsPatrick van de VoorenNicky Boschman TeCe Techno Centre Luuk van Summeren ","permalink":"https://cncz.science.ru.nl/howto/labservant-managers/","summary":"\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eInstitute/Service\u003c/th\u003e\n \u003cth\u003eDepartment\u003c/th\u003e\n \u003cth\u003eLab Manager(s)\u003c/th\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd colspan=\"3\"\u003e\u003cstrong\u003eDonders Centre for Neuroscience\u003c/strong\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDCN\u003c/td\u003e\n \u003ctd\u003eSection Neurobiology\u003c/td\u003e\n \u003ctd\u003eDebbie Tilburg-Ouwens\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDCN\u003c/td\u003e\n \u003ctd\u003eSection Neurophysics\u003c/td\u003e\n \u003ctd\u003eDebbie Tilburg-Ouwens\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e \n \u003ctd colspan=\"3\"\u003e\u003cstrong\u003eHigh Field Magnet Laboratory \u0026 FELIX\u003c/strong\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHFML/FELIX\u003c/td\u003e\n \u003ctd\u003eFELIX Facility\u003c/td\u003e\n \u003ctd\u003eJonathan Martens\u003cbr/\u003eBritta Redlich\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHFML/FELIX\u003c/td\u003e\n \u003ctd\u003eHigh Field Magnet Laboratory\u003c/td\u003e\n \u003ctd\u003eHans Engelkamp\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd colspan=3\u003e\u003cstrong\u003eInstitute for Molecules and Materials\u003c/strong\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eIMM\u003c/td\u003e\n \u003ctd\u003eAnalytical Chemistry \u0026 Chemometrics\u003c/td\u003e\n \u003ctd\u003eJoris Meurs\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eIMM\u003c/td\u003e\n \u003ctd\u003eApplied Materials Science\u003c/td\u003e\n \u003ctd\u003ePeter Mulder\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eIMM\u003c/td\u003e\n \u003ctd\u003eBiophysical Chemistry\u003c/td\u003e\n \u003ctd\u003eFrank Nelissen\u003cbr/\u003eAmrah Weijn\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eIMM\u003c/td\u003e\n \u003ctd\u003eBiomolecular Chemistry\u003c/td\u003e\n \u003ctd\u003eAmrah Weijn\u003cbr/\u003eFrank Nelissen\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eIMM\u003c/td\u003e\n \u003ctd\u003eMolecular and Laser Physics\u003c/td\u003e\n \u003ctd\u003eAndre van Roij\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eIMM\u003c/td\u003e\n \u003ctd\u003eMolecular Chemistry Cluster\u003c/td\u003e\n \u003ctd\u003eSamuel Bosma\u003cbr/\u003eJan Dommerholt\u003cbr/\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eIMM\u003c/td\u003e\n \u003ctd\u003eNMR Research Centre\u003c/td\u003e\n \u003ctd\u003eRuud Aspers\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eIMM\u003c/td\u003e\n \u003ctd\u003ePhysical Chemistry of Soft Matter\u003c/td\u003e\n \u003ctd\u003eRuth Croters\u003c/td\u003e\n \u003ctr\u003e\n \u003ctd\u003eIMM\u003c/td\u003e\n \u003ctd\u003eScanning Probe Microscopy\u003c/td\u003e\n \u003ctd\u003eHenning von Allwörden\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eIMM\u003c/td\u003e\n \u003ctd\u003eSolid State Chemistry\u003c/td\u003e\n \u003ctd\u003eErik de Ronde\u003cbr/\u003e\n Paul Tinnemans\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eIMM\u003c/td\u003e\n \u003ctd\u003eSpectroscopy of Cold Molecules\u003c/td\u003e\n \u003ctd\u003eAndre van Roij\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eIMM\u003c/td\u003e\n \u003ctd\u003eUtlrafast Spectroscopy of Correlated Materials\u003c/td\u003e\n \u003ctd\u003eChris Berkhout\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd colspan=\"3\"\u003e\u003cstrong\u003eRadboud Institute for Biological and Environmental Sciences\u003c/strong\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eRIBES\u003c/td\u003e\n \u003ctd\u003eEcology\u003c/td\u003e\n \u003ctd\u003eNiels Wagemaker\u003cbr/\u003eAnnemiek Tiekstra\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eRIBES\u003c/td\u003e\n \u003ctd\u003eEnvironmental Sciences\u003c/td\u003e\n \u003ctd\u003eMartien Graumans\u003cbr/\u003eKatinka van de Pas-Schoonen\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eRIBES\u003c/td\u003e\n \u003ctd\u003eExperimental Garden and Genebank\u003c/td\u003e\n \u003ctd\u003e...\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eRIBES\u003c/td\u003e\n \u003ctd\u003eMicrobiology\u003c/td\u003e\n \u003ctd\u003eKatinka van de Pas-Schoonen\u003cbr/\u003eRob de Graaf\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eRIBES\u003c/td\u003e\n \u003ctd\u003ePlant \u0026 Animal Biology\u003c/td\u003e\n \u003ctd\u003eJan Zethof\u003cbr/\u003eDaan van den Brink\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eRIBES\u003c/td\u003e\n \u003ctd\u003eRIBES Radio Lab\u003c/td\u003e\n \u003ctd\u003eJan Zethof\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd colspan=\"3\"\u003e\u003cstrong\u003eEducational Institutes\u003c/strong\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOBW\u003c/td\u003e\n \u003ctd\u003eEducation Labs Biosciences\u003c/td\u003e\n \u003ctd\u003eLydia Ketelaars\u003cbr/\u003e\n Guus Middelbeek\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMW\u003c/td\u003e\n \u003ctd\u003eEducation Labs Molecular Sciences\u003c/td\u003e\n \u003ctd\u003eTom Bloemberg\u003cbr/\u003e\n Luuk van Summeren\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eONS\u003c/td\u003e\n \u003ctd\u003eEducation Labs Physics\u003c/td\u003e\n \u003ctd\u003e\u003cbr\u003eLuuk van Summeren\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd colspan=3\u003e\u003cstrong\u003eRadboud Institute for Molcular Life Sciences\u003c/strong\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eRIMLS\u003c/td\u003e\n \u003ctd\u003eMolecular Biology\u003c/td\u003e\n \u003ctd\u003eAnita Kaan\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eRIMLS\u003c/td\u003e\n \u003ctd\u003eMolecular Developmental Biology\u003c/td\u003e\n \u003ctd\u003eSiebe van Genesen\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eRIMLS\u003c/td\u003e\n \u003ctd\u003eProteomics and Chromatin Biology\u003c/td\u003e\n \u003ctd\u003ePascal Jansen\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd colspan=3\u003e\u003cstrong\u003eSupporting Services\u003c/strong\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGI\u003c/td\u003e\n \u003ctd\u003eGeneral Instrumentation\u003c/td\u003e\n \u003ctd\u003eSebastian Krosse\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHousing \u0026 Logistics\u003c/td\u003e\n \u003ctd\u003eLogistics Centre\u003c/td\u003e\n \u003ctd\u003eRuud Patings\u003cbr/\u003ePatrick van de Vooren\u003cbr/\u003eNicky Boschman\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTeCe\u003c/td\u003e\n \u003ctd\u003eTechno Centre\u003c/td\u003e\n \u003ctd\u003eLuuk van Summeren\u003c/td\u003e\n \u003c/tr\u003e\n \u003c/table\u003e","title":""}]