used with puppetmaster

You could consider improving the module (and guides) to work with a puppet master..

f.ex. using something like this - to make sure puppet does not do anything, until it has 3 registered mon servers:
    $pdbquery_res = ["from", "resources",
      ["and",
        ["=", "type", "Class"],
        ["=", "title", "Role::Storage::Ceph"]]]
    $pdbquery_facts = ["from", "facts",
      ["and",
        ["=", "name", "ipaddress"],
        ["in", "certname",
          ["extract", "certname",
            ["select_resources",
              ["and",
                ["=", "type", "Class"],
                ["=", "title", "Role::Storage::Ceph"]]]]]]]
    $cephmon_res = puppetdb_query($pdbquery_res)
    $cephmon_facts = puppetdb_query($pdbquery_facts)
    $cephmon = delete_undef_values($cephmon_facts.map |$nfacts| {
      $node_res = delete_undef_values($cephmon_res.map |$res| {
        if ( $res['parameters']['cluster_name'] == $cluster_name and $res['parameters']['role'] =~ /(colocated|mon)/ and $res['certname'] == $nfacts['certname'] ) {
          $res['certname']
        }
      })
      if ( size($node_res) > 0 ) {
        { certname => regsubst($nfacts['certname'],'\.[^.]+\.[^.]+$','','E'), ip => $nfacts['value'] }
      }
    })
    if ( size($cephmon) == 3 ) {
     actually try to setup config files..
    }