end
-if not scope.lookupvar('::cluster').to_s.empty?
+if scope.lookupvar('::cluster').to_s != 'undefined'
purp += "\nThis server is a node in ganeti cluster: "
purp += scope.lookupvar('::cluster').to_s + ".\n"
nodes = scope.lookupvar('::cluster_nodes').to_s.split.sort