Namespaces

A cluster is shared by many applications and teams. Namespaces divide it into separate areas, so two teams can both have a Pod named web without clashing. Everything you have created so far lives in the default namespace.

List the namespaces:

kubectl get namespaces

Besides default you will see kube-system, where Kubernetes runs its own components, and a couple of others the cluster uses internally. The short form is ns.

Create a namespace of your own:

kubectl create namespace dev

Kubernetes answers namespace/dev created. Deleting a namespace deletes everything inside it, so it is also a tidy way to clean up an experiment.