The solana-watchtower program is used to monitor the health of a cluster. It periodically polls the cluster over an RPC API to confirm that the transaction count is advancing, new blockhashes are available, and no validators are delinquent. Results are reported as InfluxDB metrics, with an optional Slack/Discord push notification on sanity failure.

Metrics

watchtower-sanity

On every iteration this data point will be emitted indicating the overall result using a boolean ok field.

watchtower-sanity-failure

On failure this data point contains details about the specific test that failed via the following fields:

• test: name of the sanity test that failed
• err: exact sanity failure message

Sanity failure push notification

To receive a Slack and/or Discord notification on sanity failure, define one or both of these environment variables before running solana-watchtower:

export SLACK_WEBHOOK=...
export DISCORD_WEBHOOK=...