## Monitoring
Indexing and serving metrics are exported via [Prometheus](https://github.com/tikv/rust-prometheus):
```bash
$ sudo apt install prometheus
```
Add `electrs` job to `scrape_configs` section in `/etc/prometheus/prometheus.yml`:
```
- job_name: electrs
static_configs:
- targets: ['localhost:4224']
```
Restart and check the collected metrics:
```
$ sudo systemctl restart prometheus
$ firefox 'http://localhost:9090/graph?g0.range_input=1h&g0.expr=index_height&g0.tab=0'
```