kubectl - How to edit service spec type to LoadBalancer via command line?

kubernetes kubectl
Rajkumar Purushothaman picture Rajkumar Purushothaman · Jul 27, 2018 · Viewed 15.5k times · Source

I have a k8s service of type clusterIP.. i need to change the below configuration via CLI

  1. the http port to https port
  2. the port number
  3. the type to Load Balancer

Is there a way to do it..?

Answer

jaxxstorm picture jaxxstorm · Jul 27, 2018

You can't remove the existing port, but you can add the HTTPs port and also change the type using kubectl patch

Example:

kubectl patch svc <my_service> -p '{"spec": {"ports": [{"port": 443,"targetPort": 443,"name": "https"},{"port": 80,"targetPort": 80,"name": "http"}],"type": "LoadBalancer"}}'

If you don't want to create JSON on the command line, create a yaml file like so:

ports:
  - port: 443
    targetPort: 443
    name: "https"
  - port: 80
    targetPort: 80
    name: "http"
  type: LoadBalancer

And then do:

kubectl patch svc <my_service> --patch "$(cat patch.yaml)"

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