We need more documentation around using Prometheus with APIcast. Some feedback we got from rhn-support-dmayorov:

For example, mention that:

• when running in OpenShift, Prometheus (if installed) will discover the APIcast metrics by the 'prometheus.io/port' and `prometheus.io/scrape` annotations on the pod.
• APIcast has its unique port for prometheus metrics - `9421`

Better to check all this and any additional information that might be relevant with the engineering team. Possibly davidor_jira