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20261028 / SSH login

REMINDER: login with password is now impossible.

If you haven't copy/activate your ssh public key in time, that's too late.

Open a ticket, with your login and the content of your public ssh key (the .pub file).

I will propagate properly.

See updated doc: https://www.ens-lyon.fr/PSMN/Documentation/connection/ssh_keys_and_agent.html

2026/10/28 13:47 · ltaulell

20261027 / DC down (END)

Works on electricals circuits for cooling systems is done, verified and OK.

Datacenter is slowly cooling to normal temperature operations (from 27°C).

I'm finishing (polishing) OS updates (13.5 → 13.7) on all servers, before restarting everything. Expect a few reboots along the way.

Will edit gradually:

  • all filers DONE
  • Auth & Gateways DONE
  • boot system DONE
  • master node DONE
  • slurmctl DONE
  • scratch DONE (mèh)
  • @comp & @visu OK
  • @nodes BOOTING
    • all partitions OK

Will cleanup tomorrow.

“C'est pas que je vous aime pas, mais il va faire noir…”

2026/10/27 12:56 · ltaulell

20261026 / DC down

So, following the events from Friday, electricals for cooling systems are fried. DC is running on a mobile rescue system, so everything HPC is powered off.

Replacement work is planned Tuesday (27-10-2026, tomorrow), at best.

ssh.psmn and allo-psmn are running, but, as everything else is down, I'm doing the planned upgrade jobs from the canceled power down from 17th of October.

Expect some homes unavailability (10 to 15mn, each server) from time to time → done.

data7 is DOWN, disks and config issues (homes and shares for Bio: LBMC, RDP, IGFL, CIRI, …)

2026/10/26 13:12 · ltaulell

20261023 / Cooling problem

Due to unknown cooling issues, all partitions are DOWN, and nodes are in POWERSAVE.

running jobs will finish, if things (cooling issues) don't go worse.

EDIT 20261023T09:45: It is going worse: fried cables on cooling systems… SHUTDOWN on almost everything in the DC.

allo-psmn (and ssh.psmn) remains the only functionnal server(s) (with main storage).

2026/10/23 07:22 · ltaulell

20261021 / Security updates

Due to a bunch of red alerts & updates, I am performing some security fixes on infrastructure servers. Some services might not respond for a few minutes.

I will deal with nodes later (don't know when yet).

(and the base server for this webservice is migrating, so I don't even know if this news will be published)

2026/10/23 07:20 · ltaulell
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