config1

for instance in worker0.mylabserver.com worker1.mylabserver.com; do
kubectl config set-cluster kubernetes-the-hard-way \
 --certificate-authority=ca.pem \
 --embed-certs=true \
 --server=https://${KUBERNETES_PUBLIC_ADDRESS}:6443 \
 --kubeconfig=${instance}.kubeconfig

kubectl config set-credentials system:node:${instance} \
 --client-certificate=${instance}.pem \
 --client-key=${instance}-key.pem \
 --embed-certs=true \
 --kubeconfig=${instance}.kubeconfig

kubectl config set-context default \
 --cluster=kubernetes-the-hard-way \
 --user=system:node:${instance} \
 --kubeconfig=${instance}.kubeconfig

kubectl config use-context default --kubeconfig=${instance}.kubeconfig
done