Ethereum 2.0 Beacon Node validator balance Prometheus Exporter

Simple Python script to fetch an Ethereum 2.0 Validator Balances from a local beacon node HTTP server and export them as a Prometheus Gauge metric.

Suggested Usage

1. pip3 install prometheus_client
2. Replace the VALIDATOR_INDICES array with the indices of the validators you want to track (you can check beaconscan.com if you don't know your indices).
3. Replace the UPDATE_INTEVAL with the desired refresh rate of your metric.
4. Run python3 /PATH/TO/SCRIPT/balance-logger.py as a service to keep it running permanently.
5. Add port http://127.0.0.1:9010 as a prometheus target in your prometheus.yml.
6. Metric will appear as validator_balance in Grafana.

Notes

• You should probably wait for your ETH2 beacon-node HTTP server to be up before starting this script, otherwise this script will crash.

• For bonus points, install CryptoWat to convert the balances to local currency.