The metrics server binds METRICS_PORT (code default 9090; this host runs it on 4018 — 4016 is occupied by another process). Docs said 4016 in three places, which is not what the service does.
The metrics server binds METRICS_PORT (code default 9090; this host runs it on 4018 — 4016 is occupied by another process). Docs said 4016 in three places, which is not what the service does.