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

1097: Network drive migration

The network drives will be migrated to a new server. During the migration, the network drives will be unavailable. Affected shares: acfiles, 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

1098: Reboot of login servers after network drive migration

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.

1096: IMAP mail server problem

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.

1095: IMAP mail server problem

The IMAP server got overloaded. Restarting the IMAP service was required to bring it back in operation.

1094: Data/file/vol server (heap) problem

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.

1092: Maintenance wireless infrastructure May 19

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....

1091: Maintenance Goudsmit

One of the systemdisks reported SMART-errors and will be replaced.

1090: lilo.science.ru.nl offline

Lilo did not shut down correctly during the planned weekly reboot. After a hardware reset, the machine booted just fine

1089: And yet again Print/phpMyAdmin server problem

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.

1088: Yet again Print/phpMyAdmin server problem

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, …)