I'm working on the manifest of a kubernetes job.
apiVersion: batch/v1
kind: Job
metadata:
name: hello-job
spec:
template:
spec:
containers:
- name: hello
image: hello-image:latestI then apply the manifest using kubectl apply -f <deployment.yaml> and the job runs without any issue.
The problem comes when i change the image of the running container from latest to something else.
At that point i get a field is immutable exception on applying the manifest.
I get the same exception either if the job is running or completed. The only workaround i found so far is to delete manually the job before applying the new manifest.
How can i update the current job without having to manually delete it first?
I think you can use kubectl patch instead of kubectl apply.
kubectl patch job jobname -p '{"spec":{"containers":[{"name":"kubernetes-serve-hostname","image":"new image"}]}}'Refer official documentation: Here
I guess you are probably using an incorrect kubernetes resource . Job is a immutable Pod that runs to completion , you cannot update it . As per Kubernetes documentation ..
Say Job old is already running. You want existing Pods to keep running, but you want the rest of the Pods it creates to use a different pod template and for the Job to have a new name. You cannot update the Job because these fields are not updatable. Therefore, you delete Job old but leave its pods running, using kubectl delete jobs/old --cascade=false.
If you intend to update an image you should either use Deployment or Replication controller which supports updates