[Krypton-users] Krypton login node restart today at 15.00, rolling node updates
Kent Engström
kent at nsc.liu.se
Wed Jan 28 10:29:00 CET 2015
Dear Krypton Users,
we need to update the CentOS operating system on the Krypton compute
nodes and the login node to patch a recently discovered security
vulnerability.
After discussing with Anders Höglund and Michael Kolax, we have
scheduled:
- The login node will be updated and rebooted today at 15.00
CET. Programs running on the login node will of course be killed at
reboot time. Running batch jobs will not be affected. The downtime
should be 30-60 minutes.
- The compute nodes will be updated using our normal "rolling upgrade"
procedure, where nodes are rebooted when they become idle. Running
jobs will not be affected.
--
Kent Engström, National Supercomputer Centre
kent at nsc.liu.se, +46 13 28 4444
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