Issue #1947 has been reported by nwp.
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Bug #1947: Puppet still leaks FDs on exec
http://projects.reductivelabs.com/issues/1947
Author: nwp
Status: Unreviewed
Priority: Normal
Assigned to:
Category:
Target version:
Complexity: Unknown
Affected version: 0.24.7
Keywords:
Puppet still leaks FDs on exec.
This can be when restarting a "service" resource or running an "exec" resource;
anything that uses util.rb's functions to actually do the exec.
The line "3.upto(256){|fd| IO::new(fd).close rescue nil}" (introduced in 0.24.6
I believe) is not adequate; FDs numbered above 256 remain open. I now have
hosts failing in the middle of puppet catalog runs due to running out of FDs.
Looking at one of the services that gets regular puppet-controlled restarts, it
has FDs 1-13, and 257->985 open. Restarting it manually makes the problem go
away.
Actually knowing which FDs are in use (for communication with the puppetmaster
in particular, but also anything else that I haven't yet noticed) and closing
them would probably fix the problem completely; iterating over FDs in the hope
that the system you are on doesn't happen to allow higher-numbered ones and
hasn't been using them if it does, is not a good solution.
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