Puppet users - Jun 2012 - Execute a shell script residing in puppet master

I''m a newbie to puppet and have been trying to execute a shell script
residing in puppet master machine in a puppet agent, with no luck so
far. Would appreciate any ideas on how to do this.

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As far as technique, assuming your myscript module (so in init.pp), you install
the file using puppet and then run it:


class myscript {
  $filesource = "puppet:///modules/myscript"
  $script1 = ''/usr/local/bin/myscript.sh''
  $script1source = "$filesource/myscript.sh"
  file { $script1:
    source => $script1source,
    mode => ''755'',
  }
  exec { $script1:
    refreshonly => true,
    require => File[$script1],
    subscribe => File[$script1],
  }
}

And then use that module in your node declarations:

node "myhost.com" {
 class { ''myscript'': }
}


Read:

http://docs.puppetlabs.com/guides/language_guide.html
http://docs.puppetlabs.com/references/stable/type.html
http://docs.puppetlabs.com/puppet/2.7/reference/modules_fundamentals.html


(You could also package the script in a deb/rpm and install the package, or
template the script, and so forth.)



On Thu, Jun 28, 2012 at 04:24:13AM -0700, kalaniS wrote:
> I''m a newbie to puppet and have been trying to execute a shell
script
> residing in puppet master machine in a puppet agent, with no luck so
> far. Would appreciate any ideas on how to do this.
> 
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> 
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On 28/06/2012, at 21:24, kalaniS <ksamarawickrema@gmail.com> wrote:
> I''m a newbie to puppet and have been trying to execute a shell
script
> residing in puppet master machine in a puppet agent, with no luck so
> far. Would appreciate any ideas on how to do this.
> 
It does depend on what you mean, can you clarify further?

If you have a script on your master, say /tmp/coolscript.sh and during a puppet
run you want the client to call out to the master and execute coolscript.sh then
no. Puppet won''t do that.
Maybe here is a good place to start:
http://docs.puppetlabs.com/learning/agent_master_basic.html

You can set up file and exec resources to first pull the script to the client
and then run it. Something like:
file {''/tmp/coolscript.sh'':
  source => ''puppet:///<path>
}
exec {''exec_coolness'':
  command => ''/tmp/coolscript.sh'',
  require => File[''''/tmp/coolscript.sh'']
}

You can also perform different commands on the master during compile time for
the client manifest. I''ll leave you to your own investigations on that.
http://docs.puppetlabs.com/references/stable/function.html#generate

Cheers,
Den

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