Find running images across all of your kubernetes cluster contexts

all_running_k8s_images.py

"""
Lists all the images currently in use in all clusters configured in your .kube/config
"""

from kubernetes import client, config

def main():
    all_images = []
    contexts, active_context = config.list_kube_config_contexts()
    if not contexts:
        print("Cannot find any context in kube-config file.")
        return
    for context in contexts:
        current_context=(context['name'])
        api_instance = client.CoreV1Api(
            api_client=config.new_client_from_config(context=current_context))
        try:
            for i in api_instance.list_pod_for_all_namespaces().items:
                for container in i.status.container_statuses:
                    if not container.image in all_images:
                        all_images.append(container.image)
        except TypeError as e:
            print("Exception when calling CoreV1Api->list_pod_for_all_namespaces: %s\n" % e)
    all_images.sort()
    print(*all_images, sep = "\n") 

if __name__ == '__main__':
    main()