How to monitor OPA Gatekeeper with Prometheus metrics
In this blog post, we’re going to explain how to monitor Open Policy Agent (OPA) Gatekeeper with Prometheus metrics. If you have deployed OPA Gatekeeper, monitoring this admission controller is as relevant as monitoring the rest of the Kubernetes control plane components, like APIserver, kubelet or controller-manager. If something breaks here, Kubernetes won’t deploy new pods in your cluster; and if it’s slow, your cluster scale performance will degrade.