An application that exposes application metrics in Prometheus format can have its metrics collected by the infrastructure by configuring the Helm Chart - ehealth-service values.
An example:
metrics: enabled: true path: /actuator/prometheus port: 8081
Collected metrics can be explored via splunk and the associated indicies:
index={ENVIRONMENT}_k8s_{NAMESPACE}_metrics
index={ENVIRONMENT}_k8s_{NAMESPACE}_metrics
For instance: index=inttest_k8s_ehealth-public_metrics
Access to indices are subject to Access Control, see: https://ehealth-dk.atlassian.net/wiki/spaces/PI/pages/579895426/Adding+Users+to+KeyCloak#List-of-groups-and-roles
Client libraries for exporting Prometheus metrics exists for a number of languages: https://prometheus.io/docs/instrumenting/clientlibs/