How can I view pods with kubectl and filter based on having a status of ImagePullBackOff?

Question

I'd like to do a kubectl get pods and filter where the pod is in a status of ImagePullBackOff.

I've tried kubectl get pods --field-selector=status.phase=waiting and kubectl get pods --field-selector=status.phase=ImagePullBackOff but that returns no results.

I've had a look at the JSON output with -o json:

...
            {
                "image": "zzzzzzzzzzzzzzzz",
                "imageID": "",
                "lastState": {},
                "name": "nginx",
                "ready": false,
                "restartCount": 0,
                "state": {
                    "waiting": {
                        "message": "Back-off pulling image \"zzzzzzzzzzzzzzzz\"",
                        "reason": "ImagePullBackOff"
                    }
                }
            }
...

If I try target that value:

kubectl get pods --field-selector=state.waiting=ImagePullBackOff 
Error from server (BadRequest): Unable to find "/v1, Resource=pods" that match label selector "", field selector "state.waiting=ImagePullBackOff": field label not supported: state.waiting

Answer 1

Using json output and piping through jq:

kubectl get pod -o=json | jq '.items[]|select(any( .status.containerStatuses[]; .state.waiting.reason=="ImagePullBackOff"))|.metadata.name'

Last chunk |.metadata.name means it'll list pod names instead of the entire structures.