[Bug 1695870] Re: [regression] sssd won't start if autofs is not installed

[Łukasz Zemczak]

I have accepted the xenial version (1.13.4-1ubuntu1.6) of this upload
just now. The usual tool for doing reviews has exploded so the usual
SRU-notification wasn't sent out - reason for that was that the
changelog mentioned an already Fix Released bug as being fixed by this
release here (LP: #1566508). I expected this to be just a no-op, but I
guess I should have requested a re-upload without it being mentioned
instead... Now it's too late.

Anyway, please test the sssd package in xenial-proposed and mark the bug
as verification-done-xenial if the bug is fixed (or verification-failed-
xenial if the verification failed).

Thank you!

** Tags added: verification-done-xenial

** Changed in: sssd (Ubuntu Xenial)
       Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1695870

Title:
  [regression] sssd won't start if autofs is not installed

Status in sssd package in Ubuntu:
  Fix Released
Status in sssd source package in Trusty:
  Fix Released
Status in sssd source package in Xenial:
  Fix Committed

Bug description:
  [Impact]

   * On Trusty, SSSD does not start when AutoFS is not installed because the AutoFS "starting" signal is not emitted.
   * This only affects the upstart service (Trusty). Systemd services work fine.

  [Test Case]

   * Install SSSD in a machine without AutoFS and reboot.
   * The service won't start on boot, even though it can be started manually.

  [Regression Potential]

   * None expected, but if one is found it will only impact the startup
  of SSSD at boot

  [Original Description]

  * The Xenial regression has been first reported via LP: #1700084 and
  then we marked it a duplicate and decided to continue the SRU via this
  bug (being the original one) for the SRU to be less confusing.

  The fix for LP# 1566508 (in Ubuntu 14.04 at least) introduces a
  regression that prevents sssd from starting if the autofs package is
  not installed.

  The /etc/init/sssd.conf script now has:

  ```
  start on (filesystem and net-device-up and starting autofs)
  ```

  The "starting autofs" will never happen if autofs is not installed.

  That's critical in that that prevents authentication after the next
  boot after "sssd" has been upgraded.

  The work around for now is to remove that "and starting autofs" or
  install the autofs package.

  ```
  $ apt-cache policy sssd
  sssd:
    Installed: 1.11.8-0ubuntu0.6
    Candidate: 1.11.8-0ubuntu0.6
    Version table:
   *** 1.11.8-0ubuntu0.6 0
          500 http://gb.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       1.11.5-1ubuntu3 0
          500 http://gb.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
  ```

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