system news

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

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.

Power outage

Due to rewiring of the main power connection to the MIT building (the building that, among others, is housing HPC2N), there would be a power outage all day on 2025-07-03, but it should not have affected the Kebnekaise cluster. 

The outage is planned for: 2025-07-03, 7:00 - 16:00. 

UPDATE: 

Some things did not go as expected, which means that Kebnekaise, the web, various infrastructure, etc. lost power and is currently down. 

UPDATE: 2025-07-03, 12:35

Parts of the infrastructure, as well as the web, is coming up. 

We will have a maintenance window 2025-01-07 - 2025-01-10 for upgrading our project and user home file system.

This means that Kebnekaise will be drained from running jobs during the week before and no jobs will be allowed to run during the maintenance window. The login nodes will also be unavailable for the same reason.

*UPDATE 2025-01-10 16:20*

The file system upgrade is now done.

Login nodes and batch system is up and running.