I'd like to receive a notification whenever there are any changes to the kubernetes cluster. Pods are created/deleted, etc. This can be a in a form of a webhook, or a message in a pub/sub, etc anything that can be used in autonomous manner.
Running the kubernetes cluster in gcp.
You can get such events with creating hooks in linux compatible languages (such as go,python etc.) to relevant k8s object's watch endpoint. i.e./apis/apps/v1/watch/namespaces/{namespace}/deployments/{name} is the watch endpoint of Deployment object. You may find the watch endpoint of the object you desire from the API reference of k8s-api-server. https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.13/