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)

1417: Network changes websites

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. List of sites: alice.science.ru.nl alicecontrol.science.ru.nl coursetimetable.science.ru.nl dmarcreport.science.ru.nl edutools.science.ru.nl eduview.science.ru.nl...

Resolved Reports

1188: Servers down due to failed power distribution unit

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.

1187: RU network maintenance problem

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.

1186: RU network maintenance

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.

1184: Network drives not available after reboot

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.

1185: Digital exam environment not available due to maintenance

Due to maintenance, the digital exam environment will not be available for several hours.

1183: Power distribution unit failed

Three cluster nodes powered down due to a failed PDU. After replacing the PDU, the nodes came up normally.

1182: Atlas.ti reports: license (almost) expired

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&CZ.

1181: License server reboot problem

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. Altera Ansys Accelrys Genesys Hdlworks Idapro Xilinx IntelCompiler Ingr Maple Mathematica Matlab MentorGraphics Mestrelab Topspin Orcad Originlab StateaseRlm

1176: License server (lepelaar) reboot problem

Matlab (until 08:45), Origin (09:00), Mestrenova (9:20), Mathematica (9:30) and Orcad (11:20) service not started. Cause yet unknown.

1180: Both Science VPNs down for short maintenance

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.