How can I set a fix cluster port for a nodePort service. I need to validate the incoming port inside the pod, hence required the same port to be forwarded to the pod when message reached inside the currently it picks a random port and node ip to send the packet into pod from the service.
How set a fixed cluster port for nodePort service in k8s
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You can specify a fixed port for the nodeport when you define it:
https://kubernetes.io/docs/concepts/services-networking/service/#nodeport