How to have init.pp in a module run some function whenever any class in the module is called.

[Dan Mahoney]

Hey all,

We have a simple adduser module, with an init.pp like so:

class adduser::config {

   case $facts['operatingsystem'] {

     'Debian': {

       $bash = '/bin/bash'

       $tcsh = '/bin/csh'

       $sh = '/bin/sh'

       $staffgid = '50'

       $wheelgroups = ['adm', 'sudo']

       $rootgroup = 'root'

     }

     default: {

       $bash = '/usr/local/bin/bash'

       $csh = '/bin/csh'

       $tcsh = '/bin/csh'

       $sh = '/bin/sh'

       $staffgid = '20'

       $wheelgroups = ['wheel']

       $rootgroup = 'wheel'

     }

   }

}

This code *was* in the main "adduser" class, but we found that when we called a user directly, it didn't run.

All our users have stanzas like this one:

class adduser::user_ray {

require adduser::config

  user { 'bob':

    ensure   => 'present',

    comment  => 'Bob User',

    gid      => $staffgid,

    home     => '/home/bob',

    password => '*',

    shell    => $tcsh,

    uid      => '20049',

    managehome => true

  }

}

Even with the direct require of adduser::config we still see errors like this in the puppetserver log:

2018-06-04 03:27:24,369 WARN  [qtp1220040994-783] [puppetserver] Puppet Unknown variable: 'tcsh'. at /usr/local/etc/puppet/code/environments/production/modules/adduser/manifests/init.pp:249:17

2018-06-04 03:27:24,377 WARN  [qtp1220040994-783] [puppetserver] Puppet Unknown variable: 'staffgid'. at /usr/local/etc/puppet/code/environments/production/modules/adduser/manifests/init.pp:460:17

2018-06-04 03:27:24,380 WARN  [qtp1220040994-783] [puppetserver] Puppet Unknown variable: 'wheelgroups'. at /usr/local/etc/puppet/code/environments/production/modules/adduser/manifests/init.pp:461:17

2018-06-04 03:27:24,382 WARN  [qtp1220040994-783] [puppetserver] Puppet Unknown variable: 'bash'. at /usr/local/etc/puppet/code/environments/production/modules/adduser/manifests/init.pp:464:17

What's the proper way to do this inheritance?  And the proper way to name variables so they scope right?

Thanks in advance,

-Dan 

[Martin Alfke]

Hi Dan,

variables in classes are always local variables.
You can reference variables from other classes by adding the namespace (classname) to the variable.
Referencing variables from other classes is only possible when the class containing the variables has been declared:

class adduser::user_ray {
require adduser::config
user { 'bob':
ensure => 'present',
comment => 'Bob User',

gid => $adduser::config::staffgid,

home => '/home/bob',
password => '*',

shell => $adduser::config::tcsh,

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