Zebra Metrics

Zebra has support for Prometheus, configured using the prometheus compile-time feature, and the MetricsSection runtime configuration.

This requires supporting infrastructure to collect and visualize metrics, for example:

Create the zebrad.toml file with the following contents:
```
[metrics]
endpoint_addr = "127.0.0.1:9999"
```
Run Zebra, and specify the path to the zebrad.toml file, for example:
```
zebrad -c zebrad.toml start
```

Install and run Prometheus and Grafana via Docker:

# create a storage volume for grafana (once)
sudo docker volume create grafana-storage
# create a storage volume for prometheus (once)
sudo docker volume create prometheus-storage

# run prometheus with the included config
sudo docker run --detach --network host --volume prometheus-storage:/prometheus --volume /path/to/zebra/prometheus.yaml:/etc/prometheus/prometheus.yml  prom/prometheus

# run grafana
sudo docker run --detach --network host --env GF_SERVER_HTTP_PORT=3030 --env GF_SERVER_HTTP_ADDR=localhost --volume grafana-storage:/var/lib/grafana grafana/grafana

Now the grafana dashboard is available at http://localhost:3030 ; the default username and password is admin/admin. Prometheus scrapes Zebra on localhost:9999, and provides the results on localhost:9090.

Configure Grafana with a Prometheus HTTP Data Source, using Zebra's metrics.endpoint_addr.

In the grafana dashboard:
1. Create a new Prometheus Data Source Prometheus-Zebra
2. Enter the HTTP URL: 127.0.0.1:9090
3. Save the configuration
Now you can add the grafana dashboards from zebra/grafana (Create > Import > Upload JSON File), or create your own.

The Zebra Book

Zebra Metrics