====== Solution to Ganglia-Puppet installation problem ======

  * **Problem**: when trying to enable jhoblitt/ganglia modules on cld-ganglia, the following error was reported: <code>
 cld-foreman puppet-master[10066]: Module ganglia is not supported on operatingsystemmajrelease  at
 /etc/puppet/environments/production/modules/ganglia/manifests/params.pp:51 on node cld-ganglia.cloud.pd.infn.it
</code>
  * **Solution**:
    * old version of facter package was causing the message: <code bash>
      [root@cld-foreman ~]# facter operatingsystemmajrelease
      6
      [root@cld-foreman ~]# facter --version
      1.7.3
      [root@cld-foreman ~]# yum list facter
      [...]
      Installed Packages
      facter.x86_64                                      1:1.7.3-1.el6                                      @puppetlabs-products
      Available Packages
      facter.noarch                                      1.6.7-1.el6                                        puppetlabs-products 
      facter.x86_64                                      1:1.7.4-1.el6                                      puppetlabs-products 
      
      [root@cld-ganglia ~]# facter operatingsystemmajrelease
      [root@cld-ganglia ~]# facter --version
      1.6.18     
      [root@cld-ganglia ~]# yum list facter
      [...]
      Installed Packages
      facter.x86_64                            1.6.18-3.el6                             @Extra Packages for Enterprise Linux/6.1
</code>
  * install missing puppetlabs repositories - through the puppetlabs-release package: <code bash>
    [root@cld-ganglia ~]# rpm -ivh https://yum.puppetlabs.com/el/6/products/x86_64/puppetlabs-release-6-7.noarch.rpm
    </code>
  * update facter package and run the puppet-agent, when the process finished check that ganglia-* packages were installed: <code bash>
    [root@cld-ganglia ~]# yum update facter
     [...]
     Updated:
     facter.x86_64 1:1.7.4-1.el6                                                                                             
     
     Complete!
     [root@cld-ganglia ~]# facter operatingsystemmajrelease
     6
     [root@cld-ganglia ~]# puppet agent -tv
     notice: Ignoring --listen on onetime run
     notice: Run of Puppet configuration client already in progress; skipping
     
     
     [root@cld-foreman ~]# less /var/log/messages
     Jan 24 12:17:03 cld-foreman puppet-master[8965]: Compiled catalog for cld-nagios.cloud.pd.infn.it in environment production in 3.30 seconds
     
     [root@cld-ganglia ~]# rpm -qa |grep ganglia
     ganglia-gmetad-3.1.7-6.el6.x86_64
     ganglia-web-3.1.7-6.el6.x86_64
     ganglia-3.1.7-6.el6.x86_64
     ganglia-gmond-3.1.7-6.el6.x86_64
     </code>