[Puppet Users] Dependency cycles, please help.

[Julien Cornuwel]

Hi,

I'm having trouble writing a recipe to handle apache/passenger.

First, here is my apache2 class, found here :
http://www.reductivelabs.com/trac/puppet/wiki/Recipes/DebianApache2Recipe
---------------------------------------------
$apache2_sites = "/etc/apache2/sites"
$apache2_mods = "/etc/apache2/mods"

class apache2 {
[...]
   define module ( $ensure = 'present' ) {
      case $ensure {
         'present' : {
            exec { "/usr/sbin/a2enmod $name":
               unless => "/bin/readlink
${apache2_mods}-enabled/${name}.load",
               notify => Exec["force-reload-apache2"]
            }
         }
         'absent': {
            exec { "/usr/sbin/a2dismod $name":
               onlyif => "/bin/readlink
${apache2_mods}-enabled/${name}.load",
               notify => Exec["force-reload-apache2"]
            }
         }
         default: { err ( "Unknown ensure value: '$ensure'" ) }
      }
   }
[...]
}
---------------------------------------------
And then, my passenger class :
---------------------------------------------
define passenger::install($version) {

  package {
    [
      "build-essential",
      "apache2-prefork-dev",
      "libapr1-dev",
      "libaprutil1-dev"
    ]:
    ensure => installed
  }

  package { passenger:
    ensure => $version,
    provider => gem,
    require => [Class['gems'], Class['ruby'], Class['apache2']]
  }

  exec { passenger-install:
    command => "/usr/bin/yes \"\" |
/usr/bin/passenger-install-apache2-module",
    creates =>
"/usr/lib/ruby/gems/1.8/gems/passenger-$version/ext/apache2/mod_passenger.so",
    require => Package['passenger']
  }

}

define passenger::enable($version) {
  passenger::install { passenger: version => $version }

  file { passenger-load:
    path => "/etc/apache2/mods-available/passenger.load",
    content => "LoadModule passenger_module
/usr/lib/ruby/gems/1.8/gems/passenger-$version/ext/apache2/mod_passenger.so\n",
    mode => 644,
    require => Exec['passenger-install'],
  }

  file { passenger-conf:
    path => "/etc/apache2/mods-available/passenger.conf",
    content => template("passenger/passenger.conf.erb"),
    mode => 644,
    require => Exec['passenger-install'],
  }

  apache2::module { passenger:
    ensure => present,
    require => [File['passenger-conf'], File['passenger-load']]
  }
}
---------------------------------------------

When my client node runs that, I get the following error :

Could not apply complete catalog: Found dependency cycles in the following
relationships: Exec[/usr/sbin/a2enmod passenger] =>
Exec[force-reload-apache2], Package[passenger] => Exec[passenger-install],
Exec[passenger-install] => File[passenger-conf], File[passenger-conf] =>
Exec[/usr/sbin/a2enmod passenger], File[passenger-load] =>
Exec[/usr/sbin/a2enmod passenger], Exec[passenger-install] =>
File[passenger-load], Exec[force-reload-apache2] => Package[passenger]

I'm sure I am missing something here, but it's been a few hours now. So, I'd
be very grateful if someone could point me in the right direction...

Thanks,

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