Retry pull image in a kubernetes pod

Question

I'm a noob when it comes to kubernetes. I was just experimenting with a few commands, i tried 

 kubectl get pods

Result:

NAME                   READY     STATUS             RESTARTS   AGE
mysql-apim-db-1viwg    1/1       Running            1          20h
mysql-govdb-qioee      1/1       Running            1          20h
mysql-userdb-l8q8c     1/1       Running            0          20h
wso2am-default-813fy   0/1       ImagePullBackOff   0          20h

But because of imagePullBackOff i need to retry it.

How do i do that?

Answer 1

if you're manually trying to restart then use the following command, it deleted and recreates the pod.

kubectl replace --force -f <yml_file_describing_pod>

Answer 2

In case of not having the yaml file:

kubectl get pod PODNAME -n NAMESPACE -o yaml | kubectl replace --force -f -

Comments

This deletes the pod. Is there a way to achieve this without deleting the pod?

Answer 3

If the Pod is part of a Deployment or Service, deleting it will restart the Pod and, potentially, place it onto another kubelet:

$ kubectl delete po $POD_NAME

replace it if it's an individual Pod:

$ kubectl get po -n $namespace $POD_NAME -o yaml | kubectl replace -f -