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Hi, I'm getting this error. vagrant@master-1:~$ kubectl exec -ti busybox -- nslookup kubernetes error: unable to upgrade connection: Forbidden (user=kube-apiserver, verb=create, resource=nodes, subresource=proxy) vagrant@master-1:~$ It's due to this change in GitHub.. [Correction: User should be system:kube-apiserver] 13-kube-apiserver-to-kubelet.md #118 I've just reverted this change and then it's OK. cat <<EOF | kubectl apply --kubeconfig admin.kubeconfig -f - apiVersion: rbac.authorization.k8s.io/v1beta1 kind: ClusterRoleBinding metadata: name: system:kube-apiserver namespace: "" roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: system:kube-apiserver-to-kubelet subjects: - apiGroup: rbac.authorization.k8s.io kind: User name: kube-apiserver # system:kube-apiserver EOF