freeipa team mailing list archive

[Timo Aaltonen <2061055@xxxxxxxxxxxxxxxxxx>]

well, there is a way to map service names from the default ones to what
the platform has, so I'll add a mapping sshd->ssh.

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https://bugs.launchpad.net/bugs/2061055

Title:
  Joining IPA domain does not restart ssh -- 'sshd.service' alias is not
  set up by default

Status in freeipa package in Ubuntu:
  New
Status in openssh package in Ubuntu:
  New

Bug description:
  Joining a FreeIPA domain reconfigures SSH. E.g. it enables GSSAPI
  authentication in /etc/ssh/sshd_config.d/04-ipa.conf . After that, it
  tries to restart sshd, but that fails as "sshd.service" is not a thing
  on Ubuntu:

  2024-04-12T03:10:57Z DEBUG args=['/bin/systemctl', 'is-active', 'sshd.service']
  2024-04-12T03:10:57Z DEBUG Process finished, return code=4

  (in /var/log/ipaclient-install.log)

  While that could be changed in freeipa, I'd argue that this is really
  a bug in Ubuntu's openssh package. Many upstream software, Ansible
  scripts etc. assume that the service is "sshd.service". In
  Debian/Ubuntu the primary unit is "ssh.service", but it has an
  `[Install] Alias=sshd.service`. That works in Debian because there
  sshd.service *actually* gets enabled by default, and ssh.socket isn't.

  But Ubuntu moved to socket activation (which is good!), so that
  ssh.socket is running by default. But that means that ssh.service
  never gets "systemctl enable"d, and hence the alias never gets set up:

  # systemctl status sshd.service
  Unit sshd.service could not be found.

  So if ssh.service is already running, it never gets restarted by "ipa-
  client-install".

  It would be really good to make that alias work by default -- if
  nothing else, just create the symlink manually in the postinst?

  freeipa-client 4.10.2-2ubuntu3
  openssh-server 1:9.6p1-3ubuntu12

  
  Note: we have tested this functionality in Cockpit on Ubuntu for a long time already. But until very recently we had a workaround to force the creation of that alias:
  https://github.com/cockpit-project/bots/commit/3bf1b20f3fa5fe202b9710b3fe78d2133ba03f5d
  We dropped it because it broke image builds due to some bugs in openssh's postinst, but it was a bad one anyway: actual users don't have that hack, and it hides bugs like this.

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