Merge pull request stackhpc#536 from stackhpc/feature/ceph-mgr-exporter

Feature/ceph mgr exporter

Author: markgoddard

doc/source/configuration/monitoring.rst

@@ -127,3 +127,12 @@ If you want to add an alerting rule, there are many good examples of alerts are
 available `here <https://awesome-prometheus-alerts.grep.to/>`__. They simply
 need to be added to one of the ``*.rules`` files in the prometheus configuration
 directory.
+
+Ceph Monitoring
+===============
+
+There is code in the globals.yml file to extract the ceph mgr nodes from the
+mgrs group and list them as the endpoints for prometheus. Additionally,
+depending on your configuration, you may need set the
+``kolla_enable_prometheus_ceph_mgr_exporter`` variable to ``true`` in order to
+enable the ceph mgr exporter.

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 %}
 
 #############################################################################
 

releasenotes/notes/add-ceph-mgr-exporter-endpoints-f7d3c8b1131f6982.yaml

@@ -0,0 +1,8 @@
+---
+features:
+  - |
+    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 just be empty (the KA default). This also requires
+    setting ``kolla_enable_prometheus_ceph_mgr_exporter`` to ``true``.