Add grafana doc and images.

docs/05-administrator-guide/03-operations/09-observability/05-grafana.md

@@ -1,7 +1,63 @@
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 sidebar_label: Grafana
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+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+-->
 
 # Dashboarding With Grafana
 
-**TODO:** File a subtask under [HDDS-9859](https://issues.apache.org/jira/browse/HDDS-9859) and complete this page or section.
+Once Prometheus is up and running, Grana can be configured to monitor and visualize Ozone metrics.
+
+## Add Prometheus as a data source
+
+In the Grafana web UI, go to `Add Data Sources` and then select `Prometheus`.
+
+Enter the Prometheus hostname/port in the `HTTP`. For example, http://localhost:9094 (verify the port used by looking at Prometheus command line flags `-web.listen-address`. The port can also be found from Prometheus web UI → Status → Command-Line Flags.)
+
+Choose Prometheus type: `Prometheus`
+
+Choose Prometheus version: `2.37.x`
+
+Finish the setup by clicking on `Save and Test`.
+
+## Import a Grafana dashboard for Ozone
+
+Apache Ozone comes with a default Grafana dashboard. Follow the instructions below to import it:
+
+Download dashboard json:
+
+```shell
+wget https://raw.githubusercontent.com/apache/ozone/master/hadoop-ozone/dist/src/main/compose/common/grafana/dashboards/Ozone%20-%20Overall%20Metrics.json
+```
+
+Open Grafana portal and click on Dashboards on the left and select `Import`.
+
+Click at `Upload JSON file` and select the file `Ozone - Overall Metrics.json` that was just downloaded.
+
+The dashboard is now imported.
+
+![Overall dashboard](GrafanaOzoneOverall.png)
+
+Repeat the same for [Object Metrics](https://raw.githubusercontent.com/Xushaohong/ozone/master/hadoop-ozone/dist/src/main/compose/common/grafana/dashboards/Ozone%20-%20Object%20Metrics.json) dashboard and [RPC Metrics](https://raw.githubusercontent.com/Xushaohong/ozone/master/hadoop-ozone/dist/src/main/compose/common/grafana/dashboards/Ozone%20-%20RPC%20Metrics.json) dashboard.
+
+![Object dashboard](GrafanaOzoneObjectMetrics.png)
+
+![RPC dashboard](GrafanaOzoneRPCMetrics.png)
+
+More dashboards are constantly being added. Check out the [dashboard repo](https://github.com/apache/ozone/tree/master/hadoop-ozone/dist/src/main/compose/common/grafana/dashboards) for more.
+
+Check out the official Grafana doc [Monitor Apache Ozone with Prometheus and Grafana Cloud](https://grafana.com/docs/grafana-cloud/send-data/metrics/metrics-prometheus/prometheus-config-examples/the-apache-software-foundation-apache-ozone/) for more details.