Operations

Every node optionally serves an admin-plane on a separate port, independent of the stream API. Default port is 9090. Set it per node with adminPort in the topo, --admin-port on the CLI, or ADMIN_PORT in the Docker image. Set 0 to disable.

The admin APIs also power the dashboard with cluster, node, and raft status.

Health

Point load-balancer target-group health checks at /ready. On shutdown the node flips /ready to 503 first and waits shutdownDrainSec (topo config, default 0) before closing, so the load balancer drains in-flight traffic.

At startup the node verifies the storage and WAL buckets are reachable, retrying with backoff for up to ten attempts before failing. /health responds while it retries.