Docs: Grafana internal metrics update (#23448)

* Update metrics.md

* Updated metrics.md and configuration.md

* Added links to data sources

* Update metrics.md

* Update docs/sources/administration/metrics.md

Co-Authored-By: Carl Bergquist <carl@grafana.com>

Co-authored-by: Carl Bergquist <carl@grafana.com>
Co-authored-by: bergquist <carl.bergquist@gmail.com>

docs/sources/administration/metrics.md

 +++
-title = "Internal metrics"
+title = "Internal Grafana metrics"
 description = "Internal metrics exposed by Grafana"
 keywords = ["grafana", "metrics", "internal metrics"]
 type = "docs"
@@ -8,8 +8,87 @@ parent = "admin"
 weight = 8
 +++
 
-# Internal metrics
+# Internal Grafana metrics
 
-Grafana collects some metrics about itself internally. Currently, Grafana supports pushing metrics to Graphite or exposing them to be scraped by Prometheus.
+Grafana collects some metrics about itself internally. Grafana supports pushing metrics to Graphite or exposing them to be scraped by Prometheus.
 
-To emit internal metrics you have to enable the option under the [metrics] section in your [grafana.ini](http://docs.grafana.org/installation/configuration/#enabled-6) config file. If you want to push metrics to Graphite, you must also configure the [metrics.graphite](http://docs.grafana.org/installation/configuration/#metrics-graphite) section.
+For more information about configuration options related to Grafana metrics, refer to [metrics]({{< relref "../installation/configuration/#metrics" >}}) and [metrics.graphite]({{< relref "../installation/configuration/#metrics-graphite" >}}) in [Configuration]({{< relref "../installation/configuration.md" >}}).
+
+## Available metrics
+
+When enabled, Grafana exposes a number of metrics, including:
+
+* Active Grafana instances
+* Number of dashboards, users, and playlists
+* http status codes
+* Requests by routing group
+* Grafana active alerts
+* Grafana performance
+
+## Pull metrics from Grafana into Prometheus
+
+These instructions assume you have already added Prometheus as a data source in Grafana.
+
+1. Enable Prometheus to scrape metrics from Grafana. In your configuration file (`grafana.ini` or `custom.ini` depending on your operating system) remove the semicolon to enable the following configuration options: 
+
+   ```
+   # Metrics available at HTTP API Url /metrics
+   [metrics]
+   # Disable / Enable internal metrics
+   enabled           = true
+
+   # Disable total stats (stat_totals_*) metrics to be generated
+   disable_total_stats = false
+   ```
+
+1. (optional) If you want to require authorization to view the metrics endpoint, then uncomment and set the following options:
+
+   ```
+   basic_auth_username =
+   basic_auth_password =
+   ```
+
+1. Restart Grafana. Grafana now exposes metrics at http://localhost:3000/metrics.
+1. Add the job to your prometheus.yml file.
+   Example:
+
+   ```
+   - job_name: 'grafana_metrics'
+
+      scrape_interval: 15s
+      scrape_timeout: 5s
+  
+      static_configs:
+        - targets: ['localhost:3000']
+   ```
+1. Restart Prometheus. Your new job should appear on the Targets tab.
+1. In Grafana, hover your mouse over the **Configuration** (gear) icon on the left sidebar and then click **Data Sources**.
+1. Select the **Prometheus** data source.
+1. On the Dashboards tab, **Import** the Grafana metrics dashboard. All scraped Grafana metrics are available in the dashboard.
+
+## View Grafana metrics in Graphite
+
+These instructions assume you have already added Graphite as a data source in Grafana.
+
+1. Enable sending metrics to Graphite. In your configuration file (`grafana.ini` or `custom.ini` depending on your operating system) remove the semicolon to enable the following configuration options: 
+
+   ```
+   # Metrics available at HTTP API Url /metrics
+   [metrics]
+   # Disable / Enable internal metrics
+   enabled           = true
+
+   # Disable total stats (stat_totals_*) metrics to be generated
+   disable_total_stats = false
+   ```
+
+1. Enable [metrics.graphite] options:
+   ```
+   # Send internal metrics to Graphite
+   [metrics.graphite]
+   # Enable by setting the address setting (ex localhost:2003)
+   address = <hostname or ip>:<port#>
+   prefix = prod.grafana.%(instance_name)s.
+   ```
+
+1. Restart Grafana. Grafana now exposes metrics at http://localhost:3000/metrics and sends them to the Graphite location you specified.

docs/sources/features/datasources/graphite.md

@@ -132,7 +132,6 @@ TagValues
 tag_values(server, server=~${__searchFilter:regex})
 ```
 
-
 ### Variable Usage
 
 You can use a variable in a metric node path or as a parameter to a function.
@@ -169,6 +168,10 @@ queries via the Dashboard menu / Annotations view.
 Graphite supports two ways to query annotations. A regular metric query, for this you use the `Graphite query` textbox. A Graphite events query, use the `Graphite event tags` textbox,
 specify a tag or wildcard (leave empty should also work)
 
+## Getting Grafana metrics into Graphite
+
+Grafana exposes metrics for Graphite on the `/metrics` endpoint. For detailed instructions, refer to [Internal Grafana metrics]({{< relref "../../administration/metrics.md">}}).
+
 ## Configure the data source with provisioning
 
 It's now possible to configure data sources using config files with Grafana's provisioning system. You can read more about how it works and all the settings you can set for data sources on the [provisioning docs page]({{< relref "../../administration/provisioning/#datasources" >}})

docs/sources/features/datasources/prometheus.md

@@ -142,7 +142,9 @@ The step option is useful to limit the number of events returned from your query
 
 ## Getting Grafana metrics into Prometheus
 
-Since 4.6.0 Grafana exposes metrics for Prometheus on the `/metrics` endpoint. We also bundle a dashboard within Grafana so you can get started viewing your metrics faster. You can import the bundled dashboard by going to the data source edit page and click the dashboard tab. There you can find a dashboard for Grafana and one for Prometheus. Import and start viewing all the metrics!
+Grafana exposes metrics for Prometheus on the `/metrics` endpoint. We also bundle a dashboard within Grafana so you can get started viewing your metrics faster. You can import the bundled dashboard by going to the data source edit page and click the dashboard tab. There you can find a dashboard for Grafana and one for Prometheus. Import and start viewing all the metrics!
+
+For detailed instructions, refer to [Internal Grafana metrics]({{< relref "../../administration/metrics.md">}}).
 
 ## Configure the data source with provisioning
 

docs/sources/installation/configuration.md

@@ -644,6 +644,8 @@ Syslog tag. By default, the process's `argv[0]` is used.
 
 ## [metrics]
 
+For detailed instructions, refer to [Internal Grafana metrics]({{< relref "../administration/metrics.md" >}}).
+
 ### enabled
 Enable metrics reporting. defaults true. Available via HTTP API `/metrics`.