Cpk | C&CZ News

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For RU wide service interruption see meldingen.ru.nl.

Service Interruptions

1407: NFS problems under investigation

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. In 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. We 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....

1415: Clusternode maintenance day - February 6th 2026

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. The upcoming date for this maintenance is February 6th, 2026 (Friday)

Resolved Reports

1316: FNWI network maintenance Thursday Feb 23 19:00-21:00

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.

1315: Wing 5 Huygens network maintenance Wednesday Feb 15 19:00-20:30

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.

1314: Homeserver nfs service failed to come up

After the scheduled reboot of the home2 server, the nfs service failed to start. A manual reboot solved the problem.

1313: Wing 1 and 2 Huygens network maintenance Monday Jan 30 and Wednesday Feb 1 19:00-23:00

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.

1312: Wing 4 Huygens network maintenance Monday January 23 19:00-23:00

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.

1311: Maintenance RU internet connection Friday Feb 10 18:00-23:00

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.

1310: Wing 6 Huygens network maintenance Monday January 16 19:00-23:00

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.

1309: Unplanned reboot of vmhost

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.

1308: Accounts on Linux login servers restricted to recent users

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’t use these servers anyway. Please contact C&CZ if you want to be able to login to the Linux login servers.

1307: Sending E-mail from lilo blocked

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. For 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....