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A Practical Guide to Kubernetes

Deleting a Namespace and All Its Objects

Explore how to delete a Kubernetes namespace and all its objects in a cascading manner. Understand its use in scenarios like continuous deployment pipelines to manage temporary resources efficiently and verify that other deployments remain unaffected.

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Cascaded deletion

Another handy feature of the namespaces is their cascading effect. For example, if we delete the testing namespace, all the objects and the resources running inside it will be removed as well.

Shell
kubectl delete ns testing
kubectl -n testing get all

We delete the testing namespace and retrieve all the objects in it. If the resources were not deleted very quickly, the output will be as follows:

Shell
NAME                              READY STATUS      RESTARTS AGE
po/go-demo-2-api-56dfb69dbd-8w6rf 0/1   Terminating 0        2m
po/go-demo-2-api-56dfb69dbd-hrr4b 0/1   Terminating 0        2m
po/go-demo-2-api-56dfb69dbd-ws855 0/1   Terminating 0        2m
po/go-demo-2-db-5b49cc946b-xdd6v  0/1   Terminating 0        2m

Note: If the output shows more objects, you were too fast. ...