Kubernetes supports multiple virtual clusters backed by the same physical cluster. These virtual clusters are called namespaces.
More info here: https://kubernetes.io/docs/concepts/overview/working-with-objects/namespaces/
List namespaces:
kubectl get namespaces
but handy to see labels attached so run:
kubectl get namespaces --show-labels
https://kubernetes.io/docs/tasks/administer-cluster/namespaces-walkthrough/
Problems:
error: the server doesn’t have a resource type “namespaces”
Check what context you’re using. E.g. kubectx and then check if that cluster is running. E.g. minikube status.
More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/namespaces/
Practical examples: Deploy a WordPress app using Kubernetes on AWS
See also Kubernetes: creating a new namespace and using it in a new context