kubectl >= 1.20.x
kubectl version --client Client Version: version.Info{Major:"1", Minor:"23", GitVersion:"v1.23.1", GitCommit:"86ec240af8cbd1b60bcc4c03c20da9b98005b92e", GitTreeState:"clean", BuildDate:"2021-12-16T11:33:37Z", GoVersion:"go1.17.5", Compiler:"gc", Platform:"darwin/amd64"}In versions of kubectl less than 1.20, an error occurs because the kubectl config get-users command cannot be found among the execution contents.
When k8s Contexts are not matched to Clusters or Users like below:
(i.e. if you remove contexts, clusters & users cannot remove automatically)
$ kubectl config get-contexts CURRENT NAME CLUSTER AUTHINFO NAMESPACE aks aks clusterUser_res_aks default eks arn:aws:eks:us-east-2:443308097684:cluster/eks arn:aws:eks:us-east-2:443308097684:cluster/eks gke gke_hj-int-20200908_us-central1-c_gke gke_hj-int-20200908_us-central1-c_gke nks kubernetes kubernetes-admin$ kubectl config get-clusters NAME aks arn:aws:eks:us-east-2:443308097684:cluster/eks gke_20200512_us-central1-c_beer gke_20200512_us-central1-c_bread gke_20200512_us-central1-c_coffee gke_hj-int-20200908_us-central1-c_gke kubernetes$ ctx-cleaner deleted cluster gke_20200512_us-central1-c_beer from /Users/mz01-hj/.kube/config deleted cluster gke_20200512_us-central1-c_bread from /Users/mz01-hj/.kube/config deleted cluster gke_20200512_us-central1-c_coffee from /Users/mz01-hj/.kube/config deleted user gke_20200512_us-central1-c_beer from /Users/mz01-hj/.kube/config deleted user gke_20200512_us-central1-c_bread from /Users/mz01-hj/.kube/config deleted user gke_20200512_us-central1-c_coffee from /Users/mz01-hj/.kube/configcurl https://raw.githubusercontent.com/sysnet4admin/ctx-cleaner/main/ctx-cleaner | bashcurl https://raw.githubusercontent.com/sysnet4admin/ctx-cleaner/main/ctx-cleaner/install | bash curl https://raw.githubusercontent.com/sysnet4admin/ctx-cleaner/main/ctx-cleaner/uninstall | bash