Asher has submitted this change and it was merged.
Change subject: Event logging via varnishlog over ZeroMQ
......................................................................
Event logging via varnishlog over ZeroMQ
This patchset declares a `varnish_zmq_pub` class, nested
under `varnish`. The class comprises a package requirement
(`zpubsub`, which is already in our apt repo, with binaries
for precise) and an upstart config file for managing the
service.
Instances belonging to this class will stream `RxURL`
entries from varnishlog, listening to subscribers on port
8006 (no conflicting IANA assignment). The port is set in
the upstart config file and can be freely changed. I didn't
parametrize this in the class because none of the other
upstart configs were templated and I tried to stick closely
to the patterns I saw.
The Varnishes listens/binds rather than connects for two
reasons:
(1) That's how ZeroMQ pub/sub sockets work (publisher binds,
subscriber connects).
(2) It allows me to scale or failover to additional
listeners without having to touch configurations of the
(far more important) Varnishes.
I have the package + upstart config deployed to a labs
instance, so those two things are tested, but I'm not sure
how to test the Puppet class.
Questions:
- Am I correct that the bits varnishes are on precise?
- Where should I document this? (I don't have access to
wikitech.wm.org.)
-----------------------------------------------------------
Amended: specify respawn limit
-----------------------------------------------------------
Change-Id: I56403ce0cb36e4ad78ce7e7d8aaad311b42be16b
---
A files/upstart/zpub.conf
M manifests/varnish.pp
2 files changed, 21 insertions(+), 0 deletions(-)
Approvals:
Asher: Looks good to me, approved
gerrit2: Verified
--
To view, visit https://gerrit.wikimedia.org/r/20039
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Gerrit-MessageType: merged
Gerrit-Change-Id: I56403ce0cb36e4ad78ce7e7d8aaad311b42be16b
Gerrit-PatchSet: 2
Gerrit-Project: operations/puppet
Gerrit-Branch: production
Gerrit-Owner: Ori.livneh <o...@wikimedia.org>
Gerrit-Reviewer: Asher <afeld...@wikimedia.org>
Gerrit-Reviewer: Ori.livneh <o...@wikimedia.org>
Gerrit-Reviewer: Tychay <tc...@wikimedia.org>
Gerrit-Reviewer: gerrit2 <n...@wikimedia.org>
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