Adding Swift Proxy Server Dashboard

Provide initial version of a grafana OpenStack Swift Dashboard for the
Swift Proxy Server. The metrics are gathered by the built-in statsd
functionality of Swift and are forwarded via local telegraf daemons
to the influxDB.

Change-Id: Ieb7df97fbc7534e34ebde5a5fe365ff479de81fe

cluster_metrics/readme.rst

@@ -79,3 +79,29 @@ Install Kapacitor
 .. code-block:: bash
 
    openstack-ansible playbook-kapacitor.yml
+
+
+OpenStack Swift PRoxy Server Dashboard
+--------------------------------------
+
+Once the telegraf daemon is installed onto each host, the Swift
+proxy-server can be instructed to forward statsd metrics to telegraf.
+The following configuration enabled the metric generation and need to
+be added to the ``user_variables.yml``:
+
+.. code-block:: yaml
+
+    swift_proxy_server_conf_overrides:
+      DEFAULT:
+        log_statsd_default_sample_rate: 10
+        log_statsd_metric_prefix: "{{ inventory_hostname }}.swift"
+        log_statsd_host: localhost
+        log_statsd_port: 8125
+
+
+Rewrite the swift proxy server configuration with :
+
+.. code-block:: bash
+
+     cd /opt/openstack-ansible/playbooks
+     openstack-ansible os-swift-setup.yml --tags swift-config --forks 2

cluster_metrics/templates/telegraf.conf.j2

@@ -68,6 +68,15 @@
 {% if inventory_hostname in groups['all_containers'] %}
 [[inputs.net]]
 
+{% if inventory_hostname in groups['swift-proxy_containers'] %}
+[[inputs.statsd]]
+  service_address = ":8125"
+  metric_separator = "."
+  templates = [
+    "*.swift.proxy-server.*.*.*.* host.measurement.measurement.measurement.method.returncode.field*",
+    "*.swift.proxy-server.*.policy.*.*.*.* host.measurement.measurement.measurement.measurement.measurement.method.returncode.field*",
+  ]
+
 {% elif inventory_hostname in groups['hosts'] %}
 [[inputs.cpu]]
   percpu = true