[Bug 2087551] Re: OpenSSH server config broken on unattended update

[Nick Rosbrook]

> but with a different configuration than I had earlier

Different in what way?

I am glad this restored socket-activation for you. I am not sure how to
further investigate the bug. If you are able to find some error in the
journal, or evidence that ssh.socket was listening on the wrong port
etc., please share it.

Did you happen to check systemctl status ssh.socket ssh.service (or
something) before making the change to non-socket activation?

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https://bugs.launchpad.net/bugs/2087551

Title:
  OpenSSH server config broken on unattended update

Status in openssh package in Ubuntu:
  Incomplete

Bug description:
  My server performed unattended update of openssh-server from
  1:9.6p1-3ubuntu13.5 to 1:9.6p1-3ubuntu13.7, and after this I could not
  access ssh anymore, connection refused.

  Following the steps at the bottom of this post to use non-socket-
  based-activation has allowed me to connect to the server again:

  https://discourse.ubuntu.com/t/sshd-now-uses-socket-based-activation-
  ubuntu-22-10-and-later/30189

  I suspect this is related to using a non-default port, although the
  systemd socket configuration appeared to exist with correct values, as
  well as the custom port value in sshd_config, before making the above
  change.

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: openssh-server 1:9.6p1-3ubuntu13.7
  ProcVersionSignature: Ubuntu 6.8.0-48.48-generic 6.8.12
  Uname: Linux 6.8.0-48-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3.1
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CloudArchitecture: x86_64
  CloudBuildName: server
  CloudID: configdrive
  CloudName: configdrive
  CloudPlatform: configdrive
  CloudSerial: 20231014
  CloudSubPlatform: config-disk (/dev/vdb)
  Date: Fri Nov  8 13:13:51 2024
  ProcEnviron:
   LANG=C.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=tmux-256color
  SourcePackage: openssh
  UpgradeStatus: Upgraded to noble on 2024-06-04 (157 days ago)

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