Let’s start:)

mkdir -p $HOME/.kube

Copy Cluster kube config files in client machine(for example cluster1, cluster2)

export KUBECONFIG=$HOME/.kube/cluster1:$HOME/.kube/cluster2

Show bundle config files

kubectl config view

All file in one file(optional and best practice)

kubectl config view --flatten > .kube/config

Set permission

sudo chown $(id -u):$(id -g) $HOME/.kube/config

export KUBECONFIG=$HOME/.kube/config

Show active cluster

kubectl config get-contexts

┌[fatihaslan@lnx] [/dev/pts/1]
└[~]>  kubectl config get-contexts
CURRENT   NAME                          CLUSTER      AUTHINFO           NAMESPACE
          kubernetes-admin@kubernetes   kubernetes   kubernetes-admin
*         minikube                      minikube     minikube

Change cluster envr

kubectl config use-context kubernetes-admin@kubernetes

Show change

kubectl config get-contexts

Test

kubectl get nodes


ref: mastering-kubeconfig