The kubernetes documentation includes an example command for listing container images by pod:
List Container images by Pod
The formatting can be controlled further by using the range operation to iterate over elements individually.
kubectl get pods --all-namespaces -o=jsonpath='{range .items[*]}{"\n"}{.metadata.name}{":\t"}{range .spec.containers[*]}{.image}{", "}{end}{end}' |\ sort
When I run this command in my Debian WSL2 instance, it correctly lists the containers for each pod I have running across all namespaces.
When I run the same command in the Windows commandline, I get an error: error: a resource cannot be retrieved by name across all namespaces:
C:\workspace>kubectl get pods --all-namespaces -o=jsonpath='{range .items[*]}{"\n"}{.metadata.name}{":\t"}{range .spec.containers[*]}{.image}{", "}{end}{end}' | sort
error: a resource cannot be retrieved by name across all namespaces
Is this a bug with kubectl, or is this command *nix only? Is there an OS-independent command for getting container images by pod across all namespaces?
(I'm running Debian on WSL2, Windows 10 Enterprise. Docker Desktop using WSL2 integration, K8S with minikube.)
From k8s offical doc:
On Windows, you must double quote any JSONPath template that contains spaces (not single quote as shown above for bash). This in turn means that you must use a single quote or escaped double quote around any literals in the template. For example:
kubectl get pods -o=jsonpath="{range .items[*]}{.metadata.name}{'\t'}{.status.startTime}{'\n'}{end}"
I think this will solve your problem.