I've recently learned about kubectl --field-selector flag, but ran into errors when trying to use it with various objects.
For example :
$ kubectl delete jobs.batch --field-selector status.succeeded==1
Error from server (BadRequest): Unable to find "batch/v1, Resource=jobs" that match label selector "", field selector "status.succeeded==1": field label "status.succeeded" not supported for batchv1.JobAccording to the documentation, Supported field selectors vary by Kubernetes resource type., so I guess this behaviour was to be expected.
The annoying part is that I had to try individually each field to know if I could use them or not.
Is there any way to get all the fields supported for a given resource type / resource version / kubectl version ?
The issue in your case is that you mistakenly use status.succeeded instead of status.successful, so right command is
kubectl delete jobs.batch --field-selector status.successful==1
No resources foundRegarding your question about all the fields: my suggestion is to deep into the code and search for proper resources types in conversion.go for each API.
Example: Batch Jobs conversion.go
return scheme.AddFieldLabelConversionFunc(SchemeGroupVersion.WithKind("Job"),
func(label, value string) (string, string, error) {
switch label {
case "metadata.name", "metadata.namespace", "status.successful":
return label, value, nil
default:
return "", "", fmt.Errorf("field label %q not supported for batchv1.Job", label)
}
},
)
}
Another examples: https://github.com/kubernetes/kubernetes/blob/master/pkg/apis/core/v1/conversion.go#L462-L510
For the record, although that doesn't answer the question, it's possible to work around this limitation with jsonPath.
For instance, the example above can be done like this :
kubectl delete job $(kubectl get job -o=jsonpath='{.items[?(@.status.succeeded==1)].metadata.name}')(solution inspired from https://stackoverflow.com/a/53540996/5771067)