In a cluster configuration, open port 9911 on the manager for Prometheus exposition and import all metrics from the zeek/cluster/metrics/… topic.
For customization or disabling, redef the involved Broker options again.
Specifically, to disable listening on port 9911, set
Broker::metrics_port to 0/unknown again.
Note that in large clusters, metrics import may cause significant communication overhead as well as load on the manager.