Improve RabbitMQ stats

Signed-off-by: Aurélien Bompard <aurelien@bompard.org>

playbooks/groups/rabbitmq.yml

@@ -20,7 +20,9 @@
   - hosts
   - fas_client
   - collectd/base
-  - collectd/rabbitmq
+  # RabbitMQ statistics are cluster-wide, only collect them on one member
+  - role: collectd/rabbitmq
+    when: inventory_hostname.startswith('rabbitmq03')
   - rsyncd
   - sudo
   - rabbitmq_cluster

roles/collectd/rabbitmq/templates/rabbitmq.collectd.conf.j2

@@ -4,11 +4,14 @@ LoadPlugin python
   Interactive false
   Import "collectd_rabbitmq.collectd_plugin"
   <Module "collectd_rabbitmq.collectd_plugin">
-
     Username "nagios-monitoring"
     Password "{{ (env == 'production')|ternary(rabbitmq_monitoring_password_production, rabbitmq_monitoring_password_staging) }}"
     Realm "RabbitMQ Management"
     Host "localhost"
     Port "15672"
+    Ignore "^federation:"
+    {% if env != 'production' %}
+    VHostPrefix "stg_"
+    {% endif %}
   </Module>
-</Plugin>
+</Plugin>