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[Launchpad Bug Tracker <1976436@xxxxxxxxxxxxxxxxxx>]

[Expired for google-guest-agent (Ubuntu) because there has been no
activity for 60 days.]

** Changed in: google-guest-agent (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1976436

Title:
  sshd is reloaded immediately after start in the google 18.04 image

Status in Ubuntu:
  Expired
Status in google-guest-agent package in Ubuntu:
  Expired

Bug description:
  In recent published 18.04 images for Google Cloud, sshd is reloaded by
  systemd immediately after it is started.

  The images I'm using are sourced from https://cloud-images.ubuntu.com/locator/.
  I've found this issue in ubuntu-1804-bionic-v20220505 and ubuntu-1804-bionic-v20220419. 
  The image ubuntu-1804-bionic-v20210129 does not have the issue (sshd is not reloaded).
  I have not tested intermediate versions.

  The specific version attributes are:
  Cloud=Google Compute Engine
  Zone=us-west2
  Name=bionic
  Version=18.04
  Arch=amd64
  Instance Type=kvm

  Here's a snippet from the syslog of an image affected by this bug:

  =================================
  systemd[1]: Starting Login Service...
  systemd-logind[2057]: Watching system buttons on /dev/input/event0 (Power Button)
  systemd-logind[2057]: Watching system buttons on /dev/input/event1 (Sleep Button)
  systemd-logind[2057]: Watching system buttons on /dev/input/event2 (AT Translated Set 2 keyboard)
  systemd-logind[2057]: New seat seat0.
  systemd[1]: Started Login Service.
  systemd[1]: Stopping Regular background program processing daemon...
  systemd[1]: Stopped Regular background program processing daemon.
  systemd[1]: Started Regular background program processing daemon.
  cron[2066]: (CRON) INFO (pidfile fd = 3)
  cron[2066]: (CRON) INFO (Skipping @reboot jobs -- not system startup)
  GCEGuestAgent[1899]: 2022-06-01T01:09:28.4626Z GCEGuestAgent Error oslogin.go:109: Error restarting service: Failed to try-restart crond.service: Unit crond.service not found.
                       .
  google_guest_agent[1899]: 2022/06/01 01:09:28 logging client: rpc error: code = Unauthenticated desc = transport: metadata: GCE metadata "instance/service-accounts/default/token?scopes=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Flogging.write" not defined
  pollinate[2093]: [1.0K blob data]
  systemd[1]: Started Pollinate to seed the pseudo random number generator.
  systemd[1]: Starting OpenBSD Secure Shell server...
  sshd[2108]: Server listening on 0.0.0.0 port 22.
  sshd[2108]: Server listening on :: port 22.
  systemd[1]: Started OpenBSD Secure Shell server.
  systemd[1]: Reloading OpenBSD Secure Shell server.
  sshd[2108]: Received SIGHUP; restarting.
  systemd[1]: Reloaded OpenBSD Secure Shell server.
  sshd[2108]: Server listening on 0.0.0.0 port 22.
  sshd[2108]: Server listening on :: port 22.
  systemd[1]: Reloading.
  systemd[1]: Reloading.
  ================================

  The line of importance to me is "systemd[1]: Reloading OpenBSD Secure Shell server."
  This is in contrast to the first boot of an older, unaffected image, where no reloading is observed:

  ================================
  google-accounts[1795]: INFO Creating a new user account for admin.
  google_accounts_daemon[1795]: useradd: group admin exists - if you want to add this user to that group, use -g.
  useradd[1893]: failed adding user 'admin', data deleted
  google-accounts[1795]: WARNING Could not create user admin. Command '['useradd', '-m', '-s', '/bin/bash', '-p', '*', 'admin']' returned non-zero exit status 9..
  google-clock-skew[1791]: INFO Synced system time with hardware clock.
  pollinate[1923]: [1.0K blob data]
  systemd[1]: Started Pollinate to seed the pseudo random number generator.
  systemd[1]: Starting OpenBSD Secure Shell server...
  sshd[1945]: Server listening on 0.0.0.0 port 22.
  sshd[1945]: Server listening on :: port 22.
  systemd[1]: Started OpenBSD Secure Shell server.
  systemd[1]: Reloading.
  systemd[1]: Reloading.
  ================================

  Note that the new image has swapped to using google_guest_agent
  instead of google_accounts_daemon, and that google_guest_agent prints
  an error message directly before the reload. I don't know if that is
  related.

  This bug is impactful to me as I cannot safely "just" wait for SSH to
  be online in scripts before proceeding.

  This bug should be observable in the aforementioned images on first
  boot with no modifications.

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