Question: alternative classification of pods

[recollir]

Currently the pods are classified by "application" and "component". What would be required to instead go by "deployment" and "namespace"? Would this be a larger change?

Or would it "just" mean a change of get_application_from_labels and get component_from_labels into deployments and namespaces?

[hjacobs]

I now added the option customize the Pod mapping (#160, released in v20.4.4), i.e. you can map anything into "application" or "component" via a custom Python hook function (--map-pod-hook=hooks.map_pod):

def map_pod(pod, mapped_pod: dict):
    # use the Pod's namespace as "application" (does not really make much sense...)
    mapped_pod["application"] = pod.namespace
    # use the controller name (e.g. ReplicaSet name) for "component"
    owner_names = []
    for ref in pod.metadata.get("ownerReferences", []):
        owner_names.append(ref["name"])
    mapped_pod["component"] = ",".join(sorted(owner_names))

You would need to add this function into a new file hooks.py and add the file to kube-resource-report (e.g. by creating a new Dockerfile or mounting the file as a volume).

See also https://github.com/hjacobs/kube-resource-report/blob/master/kube_resource_report/example_hooks.py