Kubernetes: How do I delete clusters and contexts from kubectl config?

kubectl config unset takes a dot-delimited path. You can delete cluster/context/user entries by name. E.g.

kubectl config unset users.gke_project_zone_name

kubectl config unset contexts.aws_cluster1-kubernetes

kubectl config unset clusters.foobar-baz

Side note, if you teardown your cluster using cluster/kube-down.sh (or gcloud if you use Container Engine), it will delete the associated kubeconfig entries. There is also a planned kubectl config rework for a future release to make the commands more intuitive/usable/consistent.

For clusters and contexts you can also do

kubectl config delete-cluster my-cluster

kubectl config delete-context my-cluster-context

There's nothing specific for users though, so you still have to do

kubectl config unset users.my-cluster-admin

Run command below to get all contexts you have:

$ kubectl config get-contexts

CURRENT   NAME             CLUSTER     AUTHINFO                                NAMESPACE

*         Cluster_Name_1   Cluster_1   clusterUser_resource-group_Cluster_1

Delete context:

 $ kubectl config delete-context Cluster_Name_1