This is a guide to write a Kubernetes controller. We will kick off by inspecting the Kubernetes API from inside a pod within the cluster. Minikube suffices for this exercise. But you can conduct the exercise to any Kubernetes cluster.

The controller watches events related to Kubernetes pods using the Kubernetes API. When there is a new event, the controller logs the event’s type and the name of the affected pod. This controller can be extended to perform other actions when pod events occur, such as scaling the number of replicas for a deployment, sending notifications, or triggering a custom script or program.