[Labs-l] Self Hosted puppetmaster with puppet clients?

[Andrew Otto]

Yeah, not a bad idea.  Or I could just set up self hosted puppetmaster on all nodes and just rsync or git-deploy the changes from one to the others.  Either way.

> It may be possible, but would likely be quite a mess. 
Why would it be a mess?  It would only be a one time config change on the puppet agents (as well as signing the puppet certs on the puppetmaster).

> Ordinarily you would develop your changes on a single instance and get them reviewed and merged before applying to other instances.
In this case, no.  Kraken is a cluster setup (Hadoop, Kafka, Zookeeper, Storm, etc.), and the puppetization will be developed in labs.  I need to test the changes somewhere before they are reviewed and merged.



On Apr 3, 2013, at 11:26 AM, Andrew Bogott <abogott at wikimedia.org> wrote:

> On 4/3/13 10:16 AM, Andrew Otto wrote:
>> Hi yalls,
>> 
>> Analytics will soon be working on a kraken labs project.  We'd like to have a few nodes there, probably starting with 5, but possibly up to 10ish.
>> 
>> Is it possible/allowed to set up self-hosted puppetmaster on a single one of these nodes, and have the other puppet clients point at it?
> 
> It may be possible, but would likely be quite a mess.  Ordinarily you would develop your changes on a single instance and get them reviewed and merged before applying to other instances.
> 
> If there's a complicated reason why that won't work (for example, you need to test them on multiple nodes before you regard them as correct enough to merge) then here's the hacky method I would recommend:
> 
> 1)  Install puppetmaster::self on all nodes
> 2)  Commit your in-testing patch to gerrit, but mark it as a 'work in progress' in review so that reviewers know to ignore it
> 3)  Use the cherry-pick gizmo in gerrit to cherry-pick the patch onto other nodes
> 4)  test
> 5)  go to step 2
> 
> I use that process pretty frequently; it's not as big of a pain as it sounds.  Ryan can probably set you up with a spiffy one-step salt command to perform step 3 on many nodes at once.  I don't know the syntax for this offhand.
> 
> -Andrew
> 

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