Fix issue 509

Author: cmd-ntrf

site/profile/manifests/prometheus.pp

@@ -24,7 +24,15 @@
   # node-exporter. Otherwise, we risk not being able to write reports
   User <| title == 'puppet' |> {
     groups +> 'node-exporter',
-    before => File['/var/lib/node_exporter']
+    before => File['/var/lib/node_exporter'],
+    tag    +> 'mc_bootstrap'
+  }
+  # Adding 'mc_bootstrap' to Group['node-exporter'] makes sure the
+  # puppet user is added to the 'node-exporter' group during the bootstrap
+  # phase of the puppetserver, therefore preventing the puppetserver to
+  # while it serves catalog to other instances.
+  Group['node-exporter'] {
+    tag +> 'mc_boostrap'
   }
 }