Prometheus and Grafana¶
Prometheus is an open-source monitoring system with efficient time series database and a modern alerting approach. Together with Grafana it's the recommended way to make sure that your node and validator(s) are performing correctly.
Prometheus¶
To start, download Prometheus from https://prometheus.io/download/. Unzip the downloaded .zip file and run Prometheus from its installed location with the lodestar prometheus.yml passed in as the config file
./prometheus --config.file=$dataDir/prometheus.yml
Info
8008 is also the default port specified in the prometheus.yml in the lodestar repo
Then run the Lodestar beacon node with
lodestar --metrics=true --metrics.port=8008
Navigate to http://localhost:9090/ in your browser to verify that Prometheus is monitoring Lodestar
Grafana¶
Download and install Grafana from its official repository https://grafana.com/docs/grafana/latest/installation/debian/
Add Prometheus as a data source to Grafana https://prometheus.io/docs/visualization/grafana/#installing
An example of relevant metrics of interest to monitor are:
nodejs_heap_space_size_used_bytes
nodejs_eventloop_lag_seconds
beaconchain_peers
beaconchain_current_slot
beaconchain_current_finalized_epoch