How to expose a Kubernetes service on a specific Nodeport?

Question

I have create a pod with the below yaml definition.

apiVersion: v1
kind: Pod
metadata:
  name: myapp-pod
  labels:
    app: myapp
spec:
  containers:
  - name: m         


        

Answer 1

I will try to answer your query here.

Also, I am able to access the page using curl on the random port (31316 in this case) and not port 80.

-- Because, kubernetes exposed the port 31316 on the host (maps to the service) and hence it can be accessed on host:31316.

-- Service port is visible only within the kubernetes cluster. You can exec into a pod container and do a curl on servicename:service port instead of the NodePort.

Note the terms - container port: the port container listens on. Service port: the port where kubernetes service is exposed on cluster internal ip and mapped to the container port. Nodeport: the port exposed on the host and mapped to kubernetes service.