How do you use a variable in a Puppet Manifest?

Question

I am using the WSUS Module with Puppet Master on Centos 7.2. My Puppet Agent servers are running Windows Server 2012.

I want to use a manifest with a variable. However, when the Puppet Agent server has the puppet agent run, it displays "error 400, syntax error." I have tried re-writing the manifest and every variation I could think of. I keep getting some error.

Here is one example of a manifest:

class excellent {
    class { 'wsus_client':
       $cool = 'Saturday'
    server_url => 'http://acme.com',
    auto_update_option  => 'Scheduled'
    scheduled_install_day => $cool,
    scheduled_install_hour => 1,
}
}

I've tried assigning the variable in braces {}. I tried to use $LOAD_PATH, --custom-dir and FACTERLIB. But I could not figure out how to use any of these three.

I want to change the variable in one place and use it within the scope of its parent class. What should I do?

score 7 · Accepted Answer · answered Sep 14 '16 at 23:52

7

Have you tried it this way?

class excellent {
  $cool = 'Saturday'

  class { 'wsus_client':
    server_url => 'http://acme.com',
    auto_update_option  => 'Scheduled'
    scheduled_install_day => $cool,
    scheduled_install_hour => 1,
  }
}

Or, this way

class excellent (
  $cool = 'Saturday'
){
  class { 'wsus_client':
    server_url => 'http://acme.com',
    auto_update_option  => 'Scheduled'
    scheduled_install_day => $cool,
    scheduled_install_hour => 1,
  }
}

answered Sep 14 '16 at 23:52

Aaron Copley

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Is there any difference between these two? – Stefan Lasiewski Sep 15 '16 at 00:10
2

@StefanLasiewski yes, the second one makes `$cool` be a parameter for the class `excellent`. Meaning you could set it in heira, or in your class declaration for `excellent`. – Zoredache Sep 15 '16 at 00:34

score 1 · Answer 2 · answered Sep 14 '16 at 23:54

You currently seem to be attempting to assign a value to a variable within the class declaration. Your variable assignment needs to be separate.

$cool = 'Saturday'

Your class declaration should look like this.

class {'namevar':
  a => 'a',
  b => 'b',
  c => 'c'
}

How do you use a variable in a Puppet Manifest?

2 Answers2