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Ran 23 Nov 2017 09:34AM UTC

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Build # 222

Build Type

Pull #80

travis-ci

Committed by

web-flow

Commit Message

Terminate exporter process if maximum open files exceeded

This is somewhat of a workaround for the exporter becoming
perpetually blocked when it runs out of file descriptors if
the cluster is down for too long, as mentioned in:

  https://github.com/digitalocean/ceph_exporter/issues/60#issuecomment-319396108

The problem is that if the MONs are down for long enough,
each time prometheus scrapes the metrics, another socket is
opened, but these block forever.  If the cluster comes back
up before we run out of FDs, the blocked requests recover.
If the clusetr *doesn't* come back up before we run out of
FDs, the blocked requests never recover.

This commit causes ceph exporter to terminate if it runs
out of file descriptors, which IMO is better than blocking
forever -- it'll be a noisier failure, and also if you're
running ceph_exporter via systemd, systemd will then
automatically trigger a service restart.

Signed-off-by: Tim Serong <tserong@suse.com>

Pull Request Pull Request #80: Terminate exporter process if maximum open files exceeded

Run Details

1363 of 1565 relevant lines covered (87.09%)

0.92 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
1	222.1 (DOCKER_TAG=$TRAVIS_TAG)	23 Nov 2017 09:34AM UTC	0	87.09	Travis Job 222.1

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