Puppet users - Mar 2011 - Agent certificate name in a manifest on the master

Each of my EC2 instances run Puppet as `puppet agent ... --certname=$(cat
/etc/puppet/certname)`, which works very well to get each instance to the
correct node stanza in nodes.pp.

I would like to use this certname value in the default node stanza thus:

node default {
@@nagios_host { "$settings::certname": }
}

Unsurprisingly, $settings::certname is the master''s certname. $certname
is empty.

Is there a way to access the agent''s certname as a variable?

Thanks,

Richard 

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> Is there a way to access the agent''s certname as a variable?
> 
Volcane suggested on IRC:

FACTER_certname=$(cat /etc/puppet/certname) puppet agent ... --certname=$(cat
/etc/puppet/certname)

which works fine. I turned it into a Ruby fact:

require ''facter''
require ''puppet''

Facter.add :certname do
setcode do
Puppet[:certname]
end
end


Thanks for the help, R.I. 

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On Tue, Mar 01, 2011 at 02:11:31PM -0800, Richard Crowley wrote:
> Is there a way to access the agent''s certname as a variable?
Other than the ones listed at
http://docs.puppetlabs.com/guides/faq.html#are-there-variables-available-other-than-those-provided-by-facter
not really.

Could you expose the contents of /etc/certname via a simple Fact?

-- 
Ben Hughes || http://www.puppetlabs.com/

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