C&CZ Problem Card

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.

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.

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.

While testing a possible update to the IMAP mailserver, an error made the mailserver unavailable for ca. fifteen minutes.

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.

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.

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. Affected network disks: 45t 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

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&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.

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. The 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.

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. The 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.