This is a Facter rule I created to determine if the local host is the Puppet Master.
Their may have been a better way to do this; but this appears to work okay.
NOTE: If you've got a better way to do this, please email me at "tom dot sandholm at gmail dot com"
NOTE: This only works with webbrick
I'm just checking for the existance of /var/run/puppet/master.pid.
This file is created when the puppetmaster runs on a node.
The facter rule will return either "true" or "false" based on whether puppetmaster is running there.
Here is a sample output:
<On the puppetmaster>:
beast3:~ # ssh -Y root@puppet
Linux puppet 2.6.32-5-amd64 #1 SMP Wed Jan 12 03:40:32 UTC 2011 x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Thu Mar 10 09:53:10 2011 from beast3.tsand.org
root@puppet:~# facter | grep ismaster
ismaster => true
root@puppet:~#
<On a non-puppetmaster node>:
beast3:~ # ssh -Y root@n1
Linux n1 2.6.32-5-amd64 #1 SMP Wed Jan 12 03:40:32 UTC 2011 x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Thu Mar 10 10:04:15 2011 from beast3.tsand.org
root@n1:~# facter | grep ismaster
ismaster => false
root@n1:~#
Here is the code:
# /usr/lib/ruby/1.8/facter/ismaster.rb
# vi:set nu ai ap aw smd showmatch tabstop=4 shiftwidth=4:
# determine if this host is puppet master
Facter.add("ismaster") do
setcode do
if FileTest.exists?("/var/run/puppet/master.pid")
true
else
false
end
end
end