Requires upgrade to 2.14.x first, but there's now metrics plugins available and one of them is JMX. Let's do it.
Cf: T182759 for Jenkins.
- Javamelody exporter
- https://gerrit.wikimedia.org/r/monitoring?format=prometheus
- https://grafana.wikimedia.org/d/Bw2mQ3iWz/gerrit-javamelody
- JMX exporter for JVM generic metrics
- Generic one to be setup for all Wikimedia JVM T177197
-
Expose Gerrit internal metrics to JMX (details below T184086#5340821 )~ - apparently that cant be done.
Metrics exposed: https://gerrit.wikimedia.org/r/Documentation/metrics.html
- Install Gerrit plugin metrics-reporter-jmx https://gerrit.googlesource.com/plugins/metrics-reporter-jmx/