Description

Currently, validator_monitor_validators_total is a useful metric that can help infer the amount of expected attestations. However, Lighthouse emits high-cardinality metrics (validator-granularity) that make it an expensive operation (both to store and to query) to calculate the overall included/produced attestations by all managed validators.

Version

N/A

Present Behaviour

One would need to do a Prometheus count() over a metric like validator_monitor_prev_epoch_attestation_block_inclusions.

Expected Behaviour

It would be a great feature to have some metrics along the lines of validator_monitor_produced_attestations_total/validator_monitor_expected_attestations_total/validator_monitor_included_attestations_total.

Steps to resolve

Please describe the steps required to resolve this issue, if known.