Puppet nagios module

Just to keep as referenced, in case i'll be needing it for study

class nagios {

    package {
      "nagios":  ensure => present;
      "httpd":   ensure => present;
    }

Another Puppet manifest for Debian

$apache2_sites = "/etc/apache2/sites"
$apache2_mods = "/etc/apache2/mods"

class apache2 {

   # Define an apache2 site. Place all site configs into
   # /etc/apache2/sites-available and en-/disable them with this type.
   #
   # You can add a custom require (string) if the site depends on packages
   # that aren't part of the default apache2 package. Because of the
   # package dependencies, apache2 will automagically be included.
   define site ( $ensure = 'present' ) {
      case $ensure {
         'present' : {
            exec { "/usr/sbin/a2ensite $name":
               unless => "/bin/readlink -e ${apache2_sites}-enabled/$name",
               notify => Exec["reload-apache2"],
               require => Package[$require],
            }
         }
         'absent' : {
            exec { "/usr/sbin/a2dissite $name":
               onlyif => "/bin/readlink -e ${apache2_sites}-enabled/$name",
               notify => Exec["reload-apache2"],
               require => Package["apache2"],
            }
         }
         default: { err ( "Unknown ensure value: '$ensure'" ) }
      }
   }