Installing the patched version of memory.rb from
https://github.com/puppetlabs/facter/commit/9ff4453b2f0843df887ae1ec2098a4336291df0c
helped reduce the number of puppet hangs that we experience, but we were
still getting hung processes. Attaching strace to a "hung" puppet
process showed a constant output of the following lines repeated:
31024 futex(0x7f96be6ed5b0, FUTEX_WAKE_PRIVATE, 1) = 0
31024 futex(0x7f96be6ed584, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME,
231453, {1371588406, 113327589}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
31024 clock_gettime(CLOCK_REALTIME, {1371588406, 113578908}) = 0
31024 futex(0x7f96be6ed5b0, FUTEX_WAKE_PRIVATE, 1) = 0
31024 futex(0x7f96be6ed584, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME,
231455, {1371588406, 123578908}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
31024 clock_gettime(CLOCK_REALTIME, {1371588406, 123789011}) = 0
It turns out that puppet isn't actually hung, but is waiting forever for
the futex() call to stop timing out.
Once I copied in the patched processor.rb from the same git changeset
linked above, the hang problem stopped occurring for us. So from my
perspective, both memory.pp and processor.rb need to be patched in the
puppet 1.6.5 (precise) package.
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https://bugs.launchpad.net/bugs/986973
Title:
Facter bug causes puppet to hang
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