Service not reliably active after install

[Christian Ehrhardt ]

Hi,
the daily metric runs, among other things, install pcs.
In there I've had two days where in mantic the service did not come up.

Affected:
- 12th+13th of July
- Good before & after

What I see in the bad case is this:
08:05:59 Created symlink /etc/systemd/system/multi-user.target.wants/pcsd-ruby.service → /lib/systemd/system/pcsd-ruby.service.
08:05:59 Created symlink /etc/systemd/system/multi-user.target.wants/pcsd.service → /lib/systemd/system/pcsd.service.
08:06:02 Could not execute systemctl: at /usr/bin/deb-systemd-invoke line 145.

Full logs:
good: https://jenkins.canonical.com/server-team/view/metrics/job/metric-server-simple-mantic-vm-c1-m1/68/consoleFull
bad: https://jenkins.canonical.com/server-team/view/metrics/job/metric-server-simple-mantic-vm-c1-m1/69/consoleFull

That seems to be the start call at the end of postinst
  deb-systemd-invoke $_dh_action 'pcsd-ruby.service' 'pcsd.service' >/dev/null || true
in
/var/lib/dpkg/info/pcs.postinst

Due to that

OTOH, a first thought might be "why isn't is failing the install then?"
Well that is easy, this has an || true (see above).
So is this expected?
Why?
Would then a retry mechanism make sense?

I've created (https://github.com/canonical/server-test-scripts/pull/185) to have the service status info next time, but for now all I can give is the info above.

Please have a look if you think this something we can improve with what we have so far.
If not close it as incomplete until it re-occurs or someone else chimes in having more data.

[Lucas Kanashiro (lucaskanashiro)]

Thanks for reporting this bug Christian.

As you may have anticipated, I was not able to reproduce this issue locally. That command in the postinst script you mentioned is autogenerated by dh_installsystemd so nothing manually crafted by the Debian maintainer. I think we shouldn't manually change this behavior right now, if you find any occurrence of that again we can revisit and re-asses the situation. Does that sound good to you?

[Christian Ehrhardt  (paelzer)]

> As you may have anticipated

Indeed

> Does that sound good to you?

Yes

:-)
The only problem I have now is that I'm not sure if I should hope it occurs (more data) or not (making me believe things are fine)

[Launchpad Janitor (janitor)]

[Expired for pcs (Ubuntu) because there has been no activity for 60 days.]