CPK

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Service interruptions

A CPK is C&CZ’s way of reporting a problem or service interruption. Follow the mailing list or RSS feed, and check the service interruptions page for live status updates.

A CPK is how C&CZ reports a problem or service interruption. We publish one when something goes wrong, when we need to do planned maintenance, or when we want to let you know about something that affects the services we run.

Note

What’s a CPK? CPK is short for the Dutch C&CZ Probleem Kaart — C&CZ problem card. The name is simply how we’ve always done it, and it has stuck with us ever since.

How to follow CPK messages

CPK messages are first sent to the CPK mailing list — you can (un)subscribe there. You can also follow the service interruption messages via RSS.

When a CPK takes longer to resolve, we publish updates on the service interruptions page.

University-wide interruptions

For Radboud University-wide service interruptions, see meldingen.ru.nl.

 No service interruptions.


Resolved

September 2012

CPK#997 Horde webmail server down because of spam

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.

Updated Oct 8, 2026

CPK#995 Disk server "Plenty" offline

During the weekly reboot (monday mornings), the server got stuck in the BIOS.

Updated May 5, 2026

CPK#996 Disk server "Stack" offline

Updated May 5, 2026

CPK#999 Peage top-up unit near Huygens restaurant in maintenance

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.

Updated Oct 8, 2026

July 2012

CPK#994 Announced downtime: home server "pile" down for replacement

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.

Updated Oct 8, 2026

CPK#993 Postponed: Announced downtime: home server "pile" down for replacement

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… 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. 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.

Updated Oct 8, 2026

CPK#992 Partly announced downtime for mailman + horde webmail server

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.

Updated Oct 8, 2026

CPK#991 SMTP server blacklisted by MS Live Hotmail

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.

Updated Oct 8, 2026

June 2012

CPK#990 Planned service interruption: file server with problems

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.

Updated Oct 8, 2026

CPK#989 Tracelab server poly defective

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.

Updated Oct 8, 2026