Ran out of children: No child processes

Bug #1009357 reported by Petri Lehtinen on 2012-06-06
This bug affects 1 person
Affects Status Importance Assigned to Milestone
munin (Ubuntu)

Bug Description

Every now and then, cron sends me this error:

Subject: Cron <munin@dev> if [ -x /usr/bin/munin-cron ]; then /usr/bin/munin-cron; fi

[ERROR] Ran out of children: No child processes
 at /usr/share/perl5/Munin/Master/HTMLOld.pm line 868

I've received about 5 of these mails since munin was installed three weeks ago. Currently, there are three nodes munin connects to.

Petri Lehtinen (petri) wrote :

Linked http://munin-monitoring.org/ticket/1213, which seems to be related.

Serge Hallyn (serge-hallyn) wrote :

Thanks for the bug report, and the link. The reasoning seems plausible.

Marking this bug confirmed based on the upstream report, and high priority because it will impede runs with no workaround.

Changed in munin (Ubuntu):
importance: Undecided → High
status: New → Confirmed
Changed in munin:
status: Unknown → New
Petri Lehtinen (petri) wrote :

Attaching a debdiff that incorporates the patch in the upstream bug report. I've tested it on my servers for about 24h now, and it seems to work perfectly. I haven't got a single error message from munin, while normally I get 2-5 of them each day.

Petri Lehtinen (petri) on 2012-09-27
tags: added: patch

The attachment "munin_1.4.6-3ubuntu3.2.debdiff" of this bug report has been identified as being a patch in the form of a debdiff. The ubuntu-sponsors team has been subscribed to the bug report so that they can review and hopefully sponsor the debdiff. In the event that this is in fact not a patch you can resolve this situation by removing the tag 'patch' from the bug report and editing the attachment so that it is not flagged as a patch. Additionally, if you are member of the ubuntu-sponsors team please also unsubscribe the team from this bug report.

[This is an automated message performed by a Launchpad user owned by Brian Murray. Please contact him regarding any issues with the action taken in this bug report.]

Michael Terry (mterry) wrote :

Thanks so much for the patch! Working on uploading it now to quantal.

Launchpad Janitor (janitor) wrote :

This bug was fixed in the package munin - 2.0.2-1ubuntu2

munin (2.0.2-1ubuntu2) quantal; urgency=low

  * debian/patches/fix_ran_out_of_children.patch:
    - Fix occasional "Ran out of children: No child processes" error messages
      (LP: #1009357).
 -- Petri Lehtinen <email address hidden> Wed, 03 Oct 2012 15:33:15 -0400

Changed in munin (Ubuntu):
status: Confirmed → Fix Released
Petri Lehtinen (petri) wrote :

Thanks for uploading! Do fixes like this have any chance of being backported to precise?

Benjamin Drung (bdrung) wrote :

Yes, these kind of fixes can be backported. It's just a matter of someone doing the extra paperwork required for an stable release update [1].

[1] https://wiki.ubuntu.com/StableReleaseUpdates

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