Tuesday, May 12, 2015

There are no strings on me!

Lets start with puppet.
I think I made a mistake and made it too complicated out of the gate. I did some bad things in my configs, like set environments for different things.
So lets review a basic puppetmaster config with environments.
It is in the standard /etc/puppet/puppet.conf location

environmentpath = $confdir/environments
basemodulepath = $confdir/modules
dns_alt_names = puppet,puppet.velcrohurts.com,puppet.velcrohurts.local

server = puppet.velcrohurts.com
runinterval = 300

# These are needed when the puppetmaster is run by passenger
# and can safely be removed if webrick is used.
ssl_client_header = SSL_CLIENT_S_DN 
ssl_client_verify_header = SSL_CLIENT_VERIFY

So that little bit tells us we want to use environments in /etc/puppet/environments/
inside that directory we have

stephen.mcgroarty@nostrings:~$ ls /etc/puppet/environments/
development  example_env  production  staging

I think the labels are self explanatory here, but you can add a folder for whatever environment you want.
I recommend usign the environment =  tag on the clients.
I actually have a puppet manifest for the client side, so that when I put them in it stays there.

For the client, I have this manifest under /etc/puppet/environments/staging/modules/puppet/manifests/init.pp

class puppet {

    file { '/etc/puppet/puppet.conf':
        ensure => file,
        mode   => '644',
        owner  => 'root',
        group  => 'root',
        source => 'puppet:///modules/puppet/puppet.conf.erb'

Then for the modules/puppet/files/puppet.conf.erb I have the puppet config.

## Managed by Puppet ## 


server = puppet.velcrohurts.local
environment = staging
runinterval = 500

I change the environment = based on what location I want, and using puppet to control the puppet.conf might seem a bit odd, but it never changes on a single server for very long.

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