[Bug 1359563] Re: Munin cron unable to start on Ubuntu Server 14.04

[Lepe]

I solved the problem but I'm not 100% sure what was the source of it. I
tried many things to bring back the error without success. I suspect
there was an -old- munin process hanging there. The server is a
production server so I didn't restart it.

This is why I suspect that:
When I had the problem described above, I restarted munin as usual "/etc/init.d/munin restart" or "service munin restart" and also "munin-node". I even purge and reinstalled munin but the problem persisted.
Just few minutes ago, I copied from other server all the /etc/munin directory (with an older version of munin), so I killed all "munin" processes before trying again. After retrying, munin was working without issues. I thought it was something inside the configuration files but even replacing the munin directory with the previous one it worked without problem (after restarting all munin services and removing any munin process) . 

Summary: I probably installed munin too soon, when the server was not
properly set up. After munin failed, some process might have been
running which prevented munin to work correctly. Killing all "munin"
process may have solved the problem.

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https://bugs.launchpad.net/bugs/1359563

Title:
  Munin cron unable to start on Ubuntu Server 14.04

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