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Deal with archival of Buster on Debian mirrors
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Description

The removal of buster from the security and Debian archives will happen shortly: https://lists.debian.org/debian-devel-announce/2025/06/msg00001.html

the Debian 10/buster LTS updates have now also been imported to
archive.debian.org. We plan to remove 10/buster from the main and
security archives soon, that is in about four weeks or two weeks before
a planned Debian 13/trixie release, whichever happens sooner.

We need to:

  • fix container builds to stop using buster
  • ship a dummy apt source on Buster nodes, otherwise apt-get update will fail on the remaining handful of Buster hosts

Event Timeline

Change #1168671 had a related patch set uploaded (by Muehlenhoff; author: Muehlenhoff):

[operations/puppet@production] Remove buster cowbuilder environment

https://gerrit.wikimedia.org/r/1168671

Change #1168671 merged by Muehlenhoff:

[operations/puppet@production] Remove buster cowbuilder environment

https://gerrit.wikimedia.org/r/1168671

Change #1168675 had a related patch set uploaded (by Muehlenhoff; author: Muehlenhoff):

[operations/puppet@production] docker::baseimages: Stop building new buster base images

https://gerrit.wikimedia.org/r/1168675

Change #1160171 had a related patch set uploaded (by Muehlenhoff; author: Muehlenhoff):

[operations/puppet@production] No longer use mirrors.debian.org on Buster hosts

https://gerrit.wikimedia.org/r/1160171

Change #1168675 merged by Muehlenhoff:

[operations/puppet@production] docker::baseimages: Stop building new buster base images

https://gerrit.wikimedia.org/r/1168675

Change #1160171 merged by Muehlenhoff:

[operations/puppet@production] No longer use mirrors.debian.org on Buster hosts

https://gerrit.wikimedia.org/r/1160171

MoritzMuehlenhoff claimed this task.

Buster has been archved on the Debian mirrors last weekend and all fallout should be mitigated via patches.

Change #1169610 had a related patch set uploaded (by Muehlenhoff; author: Muehlenhoff):

[operations/puppet@production] Stop using debug repository on Buster

https://gerrit.wikimedia.org/r/1169610

Change #1169610 merged by Muehlenhoff:

[operations/puppet@production] Stop using debug repository on Buster

https://gerrit.wikimedia.org/r/1169610