I was reading about Kubernetes events and it seems the only way to process events is to create a Watch over http call, which in turn processes the response and becomes Iterator of events. But that is finite and you have to recreate the event watch constantly... Is there a way to simply tail events with some callback, in Java?
1 Answers
As a native watching method for Kubernetes, you can watch events in real-time with --watch flag - it is a part of API server, allowing to fetch the current state of resource/object and then subscribe to subsequent changes:
kubectl get events --watch
There is no in-built solution in Kubernetes for storing/forward event objects on the long term as by default the events have a 1-hour life span. You would need to use third-party tools to stream the events continuously, e.g. - Kubernetes Event Exporter; to collect them and export to external systems for alerting/further processing - e.g. kubewatch, kubernetes-event-exporter tools.
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