system news

On Wednesday 2026-06-24 we will start an online upgrade of the storage system that contains users home directories and all project storage directories under /proj/nobackup.

/proj/cfl_nobackup will NOT be affected.

The upgrade will temporarily cause reduced performance and delays when accessing the file system.

To minimize problems with batch jobs the queues will from time to time be stopped from starting new jobs, but submitting new jobs will still work.

We will try to keep the impact to a minimum.

***UPDATE 2026-06-24 12:50***

Summer break in project proposal processing

Apply no later than 30 June if you want project proposals processed before summer as nothing is processed during July.

Proposals will start being processed again in the first week of August.

You find the project rounds here in SUPR: https://supr.naiss.se/round/

Happy summer!

Kebnekaise is experiencing intermittent performance issues and slowdown caused by a load problem with one of the servers of Lustre Object Storage Service (for our file system). The vendor, DDN is working on it. 

We will keep you updated in this news. 

Due to a recently discovered vulnerability in ThinLinc, all user sessions have been terminated and ThinLinc login disabled for now.

The vendor says that a new version will be released 2026-04-22, we will install it as soon as we can after that.

*** UPDATE***

The new version is now installed as of 20260427 15:45

Right now we have some unknown problem with the file system for home directories and projects.

We're investigating and will try to solve things as fast as possible.

On Wednesday 2026-03-18 we will start an online upgrade of the storage system that contains users home directories and all project storage directories under /proj/nobackup.

/proj/cfl_nobackup will NOT be affected.

The upgrade will temporarily cause reduced performance and delays when accessing the file system.

To minimize problems with batch jobs the queues will from time to time be stopped from starting new jobs, but submitting new jobs will still work.

We will try to keep the impact to a minimum.

We are upgrading Kebnekaise compute and login nodes to Ubuntu Noble.

This will result in some older softwares to not be available anymore. We've tried to build everything that is currently used but when that isn't possible there should be newer versions available instead.

If something is missing despite our efforts, please send a support case through the SUPR support case interface (or mail support@hpc2n.umu.se) and let us know.

The ThinLinc access to kebnekaise-tl.hpc2n.umu.se is now working again.

The login node behind it has been upgraded to Ubuntu Noble (24.04)

We have moved the kebnekaise.hpc2n.umu.se login host to a new machine.

This machine has a different SSH host key: SHA256:PpomhGO7eeljmDUdcp9sJGm/8Ek1sTEOTP+BwSRQrRQ

You may have to change or remove the old entry for the Kebnekaise login node from the known_hosts file. On Linux (and usually also macOS) you find this file under the directory .ssh/ in your home directory. On Windows it will be under %UserProfile%\.ssh

The entry for the Kebnekaise login node could begin with any of these in your known_hosts file

Dear users,

we are doing some maintenance on Kebnekaise starting 2025-12-10 07:00.

Everything will be down, no jobs running and login nodes disabled.

This will take the whole day and we expect to have things up and running again late on the evening the same day.

Watch this news info for updates.

*** UPDATE 2025-12-10 13:20 ***

The kebnekaise.hpc2n.umu.se login node has been moved to a new machine, see separate news entry about that.