The managed HBase instances are automatically configured to export Prometheus metrics. See Monitoring for more details.

Starting with HBase 2.6 the URL for Prometheus metrics has changed. This is because HBase offers now a built-in endpoint for this purpose. This endpoint is available from the UI service. For example, in the case of the master service, the URL is http://<master-service>:16010/prometheus. The old URL http://<master-service>:9100 is still available for HBase 2.4.