Between May and June 2026, all Debian Linux workstations will be upgraded to the latest stable version, 'Trixie'.
This is because the current version, “Bookworm”, will reach the end of its life on 9 June 2026.

What does this mean for you?

Almost nothing will change in your daily work routine. Your familiar work environment will remain the same and no major changes are expected. The upgrade will primarily update the installed software to a newer version.

Do you need to do anything?

No, you don't need to do anything. We will perform the upgrade in the background.
Please note that your system will restart after the upgrade.

When will the upgrade take place?

The upgrade is scheduled to take place between May and June 2026.
The time of each upgrade will be coordinated in advance.
Please note that, due to the upcoming end of life (EOL), it is not possible to delay this indefinitely. Migration is mandatory for all workstations.

Beta test

If you have a spare workstation that could participate in beta testing, please get in touch with us now.

Questions or issues?

If you have any questions before or after the upgrade, please contact us at isg@phys.ethz.ch.

Starting in mid-August, we will migrate the OS of all managed Linux workstations from Ubuntu to Debian during summer/fall of 2024.

The exact migration dates for specific workstations will be coordinated individually in close collaboration with the respective user(s). Please note that due to the complexity of the migration it is not possible to delay this indefinitely. The migration is mandatory for all Ubuntu workstations (incl. older 20.04 Focal).

Hardware owners and users are asked to check the required steps before the migration [1] now, which includes possibly needed hardware upgrades.

All users should be aware of the (breaking) changes [2] introduced with the new setup.

Please also refer to our readme page on why [3] we do the switch to Debian.

Beta test

Please get in touch with us if you have a spare workstation to participate in beta testing, starting now. Note that any such workstation will be reinstalled again in August 2024 after completion of beta testing.

Since our launch of Matrix at the D-PHYS in March a few things have changed.

Important changes

• The subdomain of the D-PHYS hosted Riot Element Web App changed and is now at element.phys.ethz.ch. If you still use the old subdomain riot.phys.ethz.ch, please move over to the new domain and verify your new session. We will start redirecting the domain in 2021. If you have no other way of getting access to your encryption keys, you could lose access to your encrypted messages
• New documentation is available at readme.phys.ethz.ch/chat

Other changes

• Federation with other Matrix instances at ETH and the rest of the Matrix network, giving us access to bridged networks like IRC, Slack, etc. as well
• We now auto-invite new users to two more ISG moderated rooms (News/Status). Opt-out by leaving if you do not wish to receive updates from us (discouraged!). All existing members of the D-PHYS Lobby have been joined last night
• End to end encryption support (enabled by default). Element Web does not provide a search function in encrypted rooms as that would be a security issue, use the Desktop App instead
• Secure key backup method has been set to show one option only ('Security Passphrase') to new users, which will still provide the secondary recovery method using a 'Security Key'
• We opened up public rooms and room aliases for everyone. Publish your room in the public room directory to be discoverable by others on the Matrix network
• We enabled quota of 2 GiB (initial) quota per user for media (uploads) to protect from accidental or abusive over-usage
• Bots for gitlab, reminders, RSS feeds and more
• Bridges for webhooks and Slack
• Integrations (widgets)
• Import of the Slack workspace history of 3 groups at the D-PHYS
• An Element Web instance with experimental (Labs) features like tags
• A tag manager to organize many rooms in large accounts
• Jitsi video conferencing and screen sharing solution (still experimental but used by ISG on a daily basis)
• URL redirecting service to invite people via websites or email

Lookout

• We will focus on improving performance and less on features
• Stabilizing 1:1 calls and video (TURN server) and Jitsi (group calls)

For help and discussion about Matrix and Element join #matrix:phys.ethz.ch

After several years it was time to update the SSH host keys of our managed Linux machines. Therefore, if you reconnect with SSH, you might get a warning similar to this one:

ssh login.phys.ethz.ch
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
36:04:d8:3d:89:a2:76:19:ef:b6:f0:0a:f2:5c:81:a3.
Please contact your system administrator.
Add correct host key in ~/.ssh/known_hosts to get rid of this message.
Offending key in ~/.ssh/known_hosts:1
RSA host key for login.phys.ethz.ch has changed and you have requested strict checking.
Host key verification failed.


This is because your computer has memorized the previous host key and is bailing because the current one is different. This mechanism is designed to prevent users from man-in-the-middle attacks. In our case it can be treated as a mere notification that the SSH key has changed.

In order to get rid of this warning, you simply need to delete the old key from your ~/.ssh/known_hosts file. This can be done either by deleting the entry manually or with the following command

ssh-keygen -R login.phys.ethz.ch

for the machine you try to ssh into.

On the next SSH connection you will be prompted to accept the new key. Power users may also download the full list of SSH keys of all our managed Linux computers.

UPDATE 13:30 - Groupdata is back online
UPDATE 02:25 - Astrogate and Windata are back online, except groupdata
UPDATE 22:20 - Home server is back online and email working again

In order to upgrade the operating system on serveral servers, we schedule a maintenance downtime on

Sunday, 4th January 2015, starting at 22:00.

Schedule:

During the downtime you can access readonly backups of your data of the night before, take a look at our readme.

We apologize in advance for any inconvenience this service interruption might cause.

The ETH Zurich will be officially closed between Wednesday, 24th of December 2014 and Sunday, 4th of January 2015. During this time, we can only provide limited support. Please follow these rules to save us from superfluous work:

• Switch off printers
• Switch off your personal workstation and notebook except for the following:
• Do not switch off our managed Linux workstations.

We will try to follow our e-mail, but you may also have luck and meet some of us in our IRC channel.

We have scheduled a software maintenance of the D-PHYS mail server for tomorrow, Wednesday, the 18th of June 2014, starting in the late afternoon around 5pm. A downtime of all D-PHYS mail services during the evening will be part of the maintenance. The downtime is expected to take approximately 15 to 30 minutes.

During the downtime sending and receiving e-mails will not be possible and the web mail service will be not available. Incoming mails during the downtime will be delayed.

Additionally there will be a downtime of our "BackupPC" backup service for laptops and lab PCs due to server relocation on Thursday (19th of June 2014) starting around 9am.

The ETH Zurich will be officially closed between Tuesday, 24th of December 2013 and Friday, 3rd of January 2014. During this time, we can only provide limited support. Please follow these rules to save us from superfluous work:

• Switch off printers
• Switch off your personal workstation and notebook except for the following:
• Do not switch off our managed Linux workstations.

We will try to follow our e-mail, but you may also have luck and meet some of us in our IRC channel.

The ETH Zurich will be officially closed between Monday, 24th of December 2012 and Monday, 2nd of January 2013. During this time, we can only provide limited support. Please follow these rules to save us from superfluous work:

• Switch off printers
• Switch off your personal workstation and notebook except for the following:
• Do not switch off our managed Linux workstations.

We will try to follow our e-mail, but you may also have luck and meet some of us in our IRC channel.

In order to upgrade the operating system and the server hardware, we schedule a maintenance downtime on

Wednesday, 12. September 2012, starting at 17:00 and lasting for several hours.

During this time, you will not have access to the group directories.

We apologize in advance for any inconvenience this service interruption might cause.