Add endpoints for ceph_mgr_exporter

Adds code to the globals.yml file to add endpoints for the
ceph_mgr_exporter. If ceph is configured correctly, managers will be
under the mgrs inventory group. If this group is empty, then the
variable will be the default; an empty list.

Author: technowhizz

etc/kayobe/kolla/globals.yml

@@ -77,6 +77,13 @@ prometheus_node_exporter_extra_volumes:
   - "textfile:/var/lib/node_exporter/textfile_collector"
 prometheus_node_exporter_cmdline_extras: "--collector.textfile.directory=/var/lib/node_exporter/textfile_collector"
 
+# Set Ceph manager exporter endpoints
+{% if groups['mgrs'] | length > 0 %}
+prometheus_ceph_mgr_exporter_endpoints:
+{% for host in groups['mgrs'] %}
+  - "{{ admin_oc_net_name | net_ip(host) }}:9283"
+{% endfor %}
+{% endif %}
 
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