Keeping compile masters consistent

[Geoff Galitz]

Hi folks.

I'm curious what approaches you take towards making sure the puppet tree is consistent across distributed compile masters?  In PE this would be code manager's job, I believe.  What do the FOSS folks use?

I was contemplating using zookeeper for this.

-G

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Geoff Galitz, Systems Engineer

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[Peter M Souter]

I've seen a few ways of doing this:

- Running lsyncd to watch for changes to code on the MoM

- Rsync task on demand when the master is updated, maybe with something like incrond or just with scripting or Jenkins tasks

- The R10K mco task from acidprime/r10k https://github.com/acidprime/r10k#mcollective-support

You can probably go for something more heavyweight with glusterfs, but I like to keep it simple :)

[Geoff Galitz]

Cool.. I'm specifically interested in knowing how people  deal with compile servers that do not update their local version of the puppet tree properly and how to prevent them serving stale or broken catalogs.

-G

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[Martin Alfke]

Most implementations make use of config_version setting in environment.conf (or globally in puppet.conf) to identify systems with outdated puppet code

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[Matthew Nicholson]

We push r10k runs via consul execs from Jenkins, and after and only after a successful update, invalidate the environment cache(for the given environment), so even if a deploy fails , the master(s) will keep serving the "old" version as opposed to an incomplete deploy.

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