Virgo Logbook

Reports 1-1 of 1

AdV-DAQ (Software Framework)

masserot - 6:59 Thursday 10 June 2021 (52101)

MdVim - olserver117

This morning I found once more the MdVim server red in VPM . But this time I was unable to logon the olserver117 .

So the MdVim server has been restarted temporally on the olserver53.

I had a terminal already opened on olserer117 and logged as virgorun. Below the report of few commands executed from this terminal:

virgorun@olserver117[~]: date
- Thu Jun 10 06:53:33 CEST 2021
virgorun@olserver117[~]: id
- uid=1211 gid=1100 groups=1100,189600065 context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
virgorun@olserver117[~]: cm names
- Cm> Host cmns.virgo.infn.it unknown.
- Cm> Impossible to reach the NameServer.
- Cm> NameServer is not reachable.

The hostname and the username are not anymore resolved

Comments to this report:

cortese - 14:31 Thursday 10 June 2021 (52105)

This has been caused by memory exhaustion and the consequent triggering of the oom-killer which has killed also some system processes.

It seems that the memory-eating process are the root.exe processes spawned by MdVim.

The configuration of this machine has been now modified to protect from oom-killer the authentication system daemon. In case it works well it will be replicated on the other olservers.

olserver117 is rebooted and MdVim can be moved again there