honkoma/docs/development/API/prometheus.md

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# Prometheus Metrics
Pleroma includes support for exporting metrics via the [prometheus_ex](https://github.com/deadtrickster/prometheus.ex) library.
Config example:
```
config :prometheus, Pleroma.Web.Endpoint.MetricsExporter,
enabled: true,
auth: {:basic, "myusername", "mypassword"},
ip_whitelist: ["127.0.0.1"],
path: "/api/pleroma/app_metrics",
format: :text
```
* `enabled` (Pleroma extension) enables the endpoint
* `ip_whitelist` (Pleroma extension) could be used to restrict access only to specified IPs
* `auth` sets the authentication (`false` for no auth; configurable to HTTP Basic Auth, see [prometheus-plugs](https://github.com/deadtrickster/prometheus-plugs#exporting) documentation)
* `format` sets the output format (`:text` or `:protobuf`)
* `path` sets the path to app metrics page
## `/api/pleroma/app_metrics`
### Exports Prometheus application metrics
* Method: `GET`
* Authentication: not required by default (see configuration options above)
* Params: none
* Response: text
## Grafana
### Config example
The following is a config example to use with [Grafana](https://grafana.com)
```
- job_name: 'beam'
metrics_path: /api/pleroma/app_metrics
scheme: https
static_configs:
- targets: ['pleroma.soykaf.com']
```