How to change the restart policy of a running pod from Always to Never. I've kubectl edit but it does not allow to change it.
If kubectl edit is not allowing you to change the restartPolicy
Do this, kubectl delete deployment <deployment_name>
Edit yaml file with new changes. Then create deployment again. kubectl create -f deployment.yaml
Or
Edit yaml file with new changes. and apply changes to deployment using. kubectl apply -f deployment.yaml
This will delete old pod and will create new pod with new changes.
If you have pods associated with deployemnt edit it setting up proper restartPolicy for your pod.
$ kubectl edit your_deployment_name
Save changes, delete old pod, new one will come with proper resartPolicy.
To see the rollout status, run:
$ kubectl rollout status your_deployment_name
Read more here: pods-restart-policy, deployments.
Deleting pod doesn't change anything if you don't change manifest of deployment and add proper restartPolicy.
You can also delete whole deployment, change configuration file and create it from scratch.
Once you created the pod, kubernetes makes some properties immutable. These are mostly the options which can change pods stability, for example this.
You can get the manifest using kubectl get pod $PODNAME -o yaml --export. Then edit this manifest and change the restartPolicy field to Never and redeploy it.