Add Grafana dashboard (#10000)

docs/metrics/prometheus/README.md

@@ -16,6 +16,7 @@ This document explains how to setup Prometheus and configure it to scrape data f
         - [3.2 Public Prometheus config](#32-public-prometheus-config)
     - [4. Update `scrape_configs` section in prometheus.yml](#4-update-scrapeconfigs-section-in-prometheusyml)
     - [5. Start Prometheus](#5-start-prometheus)
+    - [6. Configure Grafana](#6-configure-grafana)
 - [List of metrics exposed by MinIO](#list-of-metrics-exposed-by-minio)
 
 ## Prerequisites
@@ -100,6 +101,10 @@ Start (or) Restart Prometheus service by running
 
 Here `prometheus.yml` is the name of configuration file. You can now see MinIO metrics in Prometheus dashboard. By default Prometheus dashboard is accessible at `http://localhost:9090`.
 
+### 6. Configure Grafana
+
+After Prometheus is configured, you can use Grafana to visualize MinIO metrics. Refer the [document here to setup Grafana with MinIO metrics](./grafana/README.md).
+
 ## List of metrics exposed by MinIO
 
 MinIO server exposes the following metrics on `/minio/prometheus/metrics` endpoint. All of these can be accessed via Prometheus dashboard. The full list of exposed metrics along with their definition is available in the demo server at https://play.min.io:9000/minio/prometheus/metrics

docs/metrics/prometheus/grafana/README.md

@@ -0,0 +1,16 @@
+# How to monitor MinIO server with Grafana [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io)
+
+[Grafana](https://grafana.com/) allows you to query, visualize, alert on and understand your metrics no matter where they are stored. Create, explore, and share dashboards with your team and foster a data driven culture.
+
+This document explains how to setup Grafana, to visualize MinIO metrics. 
+
+## Prerequisites
+
+- Prometheus and MinIO configured as explained in [document here](../README.md).
+- Grafana installed as explained [here](https://grafana.com/grafana/download).
+
+## MinIO Grafana Dashboard
+
+To start visualizing MinIO metrics exposed by MinIO, you can use our Grafana dashboard. Import the dashboard by copying the `json` contents from the [file here](./Minio-Overview-1594305200170.json).
+
+![Grafana](grafana-minio.png)