[Bug 1646583] Re: Ceph mon and osd don't restart on reboot with Xenial

[James Page]

I agree that there is a behavioural difference between the systemd
configurations provided by upstream, and the systemd configuration in
distro (and the reason why is outlined in bug 1627640).

Services not restarting post reboot is not something I've seen
(deploying using charms which don't do anything specific with regards to
systemd configurations).

Can you confirm which systemd service is used for the ceph-mon's in ceph
ansible?  I think this is most likely the cause - the vanilla ceph-mon
service provided by the Ubuntu and Debian packaging should automatically
startup on reboots, but I'm not 100% sure about the ceph-mon@ version
provided by upstream packages.

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https://bugs.launchpad.net/bugs/1646583

Title:
  Ceph mon and osd don't restart on reboot with Xenial

Status in ceph package in Ubuntu:
  New

Bug description:
  The ceph monitor and osd daemons do not restart automatically on
  server reboot on Xenial.

  $ apt-cache policy ceph
  ceph:
    Installed: 10.2.2-0ubuntu0.16.04.2
    Candidate: 10.2.2-0ubuntu0.16.04.2
    Version table:
   *** 10.2.2-0ubuntu0.16.04.2 500
          500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       10.1.2-0ubuntu1 500
          500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages

  This is likely caused by the same clash between upstream target files
  and Ubuntu systemd unit files that is noted in [1] but I have opened a
  separate bug because I believe the severity of not having Ceph restart
  automatically on server reboot is higher severity than not being able
  to start/stop all services with one command, which is what is reported
  in [1].

  The source of the Ubuntu package [2] does not have the necessary
  target files that upstream Ceph added to allow for restart on reboot
  under this commit [3] which is included in Ceph's github tag 10.2.2.

  
  [1] https://bugs.launchpad.net/ubuntu/+source/ceph/+bug/1627640
  [2] https://bugs.launchpad.net/ubuntu/+source/ceph/10.2.3-0ubuntu0.16.04.2
  [3] https://github.com/ceph/ceph/commit/15c4ad44010c798af7804e287ba71dcc289f806f

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