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require not being honored between classes

asked 2013-05-14 16:39:17 -0600

rynop gravatar image

updated 2013-05-15 09:29:11 -0600

i have the following init.pp for my_module class:

class my_module ()
    class{'my_module::install_dependencies': }

    class {'common_module::deploy::install':
      require => Class['my_module::install_dependencies'],
      before => Class['my_module::autoscale_deploy'],

      require => Class["common_module::deploy::install"]

In 'common_module::deploy::install' I create a user like:

  user { "mydeployuser":
     ensure => 'present',
     managehome => 'true',
     password => '',
     home => '/home/mydeployuser',
     shell => '/bin/bash',
     comment => 'code deployer',
     provider => "useradd",

In 'mymodule::autoscaledeploy' I create a new user and add him to the 'mydeployuser' group:

  user { "myuser":      #system user that JVM runs as
    name => "myuser",
    ensure => "present",
    provider => "useradd",
    groups => ['mydeployuser'],
    system => "true", 

When I apply, I ... (more)

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In your last example where you declare class {'common_module::deploy::install': you have a require to the same class, so I you get a dependency cycle. You probably meant require => Class['my_module::install_dependencies']

Stefan gravatar imageStefan ( 2013-05-15 14:40:24 -0600 )edit

Yea I noticed that as well that the documented workaround in the issue had the same cycle, so I tried to change it to ::install_dependencies. This did not fix my ...(more)

rynop gravatar imagerynop ( 2013-05-16 08:23:00 -0600 )edit

2 Answers

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answered 2013-05-14 16:50:10 -0600

Stefan gravatar image

Puppet has resource types for user and group (see for a reference list)

so when I see your user resource

user { "myuser":      #system user that JVM runs as
  name     => "myuser",
  ensure   => "present",
  provider => "useradd",
  groups   => ['mydeployuser'],
  system   => "true", 

I'd expect a group resource like

group { 'mydeployuser':
  ensure => present,
  gid    => '2000' # or don't specify gid if you don't care

but I do not see such a group resource in your manifest.

additional note: the provider and name attributes in the user resource are optional. If name is not set, it ... (more)

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The group 'mydeployuser' is automatically created when the 'mydeployuser' user is added. If I add the group resource before creating myuser, the 'mydeployuser' add runs after it and I get ...(more)

rynop gravatar imagerynop ( 2013-05-14 17:02:09 -0600 )edit

ok get it now. The problem you are describing in your comment should be resolved in the next version ( For your original problem: Is ...(more)

Stefan gravatar imageStefan ( 2013-05-14 17:11:08 -0600 )edit

Ah, that's a weird bug. Does explicitly defining the Group resource first work around it?

Ancillas gravatar imageAncillas ( 2013-05-14 17:15:43 -0600 )edit

mydeployuser is directly defined in common_module::deploy::install. Another reason I don't want to try and work around this with a group resource is I want to make sure ...(more)

rynop gravatar imagerynop ( 2013-05-14 18:06:10 -0600 )edit

answered 2013-05-14 16:50:16 -0600

Ancillas gravatar image

updated 2013-05-14 17:13:38 -0600

You're hitting a known bug. You need to use the Anchor Pattern to guarantee sub-class dependencies.

Also, as Stefan points out, you need to add a Group resource before your User resource.


Try this.

class my_module ()
  class {'my_module::install_dependencies': } ->
  class {'common_module::deploy::install': }  ->         
  class {'my_module::autoscale_deploy': }     ->

class my_module::deploy::install ()
  user { "mydeployuser":
    ensure     => 'present',
    managehome => 'true',
    password   => '',
    home       => '/home/mydeployuser',
    shell      => '/bin/bash',
    comment    => 'code deployer',
    provider   => 'useradd',

class my_module::autoscale_deploy ()
  user { 'myuser':
    name     => 'myuser',
    ensure   => 'present',
    provider => 'useradd',
    groups   => ['mydeployuser'],
    system   => 'true', 
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That was my firsst thought, too but that should only be true if the group resource was not defined in the common_module::deploy::install directly but in a nested class, right?

Stefan gravatar imageStefan ( 2013-05-14 16:53:40 -0600 )edit

Perhaps you're right. `Group['mydeployuser'] and User['mydeployuser'] are within Class['commonmodule::deploy::install'], and User['myuser'] is in Class['mymodule::autoscale_deploy'].

Ancillas gravatar imageAncillas ( 2013-05-14 17:03:19 -0600 )edit

The Class['my_module'] dependencies would wire up the class, but the resources within the classes would "float off". Since User['myuser'] is specifying a relationship with the Group, that should ...(more)

Ancillas gravatar imageAncillas ( 2013-05-14 17:05:21 -0600 )edit

Nope, the 'try this' edit example has the same problem. I think the arrow notation is just shorthand for before/require. I was not aware of the arrow notation however ...(more)

rynop gravatar imagerynop ( 2013-05-15 08:12:21 -0600 )edit

It's a pattern that R.I. came up with. The final dependency in the chain (the containing class itself) acts like a light-weight version of the anchor pattern.

Ancillas gravatar imageAncillas ( 2013-05-15 11:18:43 -0600 )edit

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Asked: 2013-05-14 16:39:17 -0600

Seen: 247 times

Last updated: May 15 '13