<p>I'm getting the following error, after running the kubeadm join:</p>

<pre><code>error :
[kubelet] Downloading configuration for the kubelet from the "kubelet-config-1.12" ConfigMap in the kube-system namespace
Unauthorized
</code></pre>

<p>but the kubelet and kubeadm versions are same, but I'm still getting this error. </p>

<p>What's the way to authorize it?</p>

<p>Not sure how you are joining your cluster but you join your cluster with something like this:</p>

<pre><code>kubeadm join &lt;ip-of-your-master&gt;:6443 --token &lt;token&gt; --discovery-token-ca-cert-hash sha256:&lt;hash-for-cert-disc&gt;
</code></pre>

<p>You get both when you first run <code>kubeadm init</code> on your master(s). The token expires after some time in which case you need to create a new token with <code>kubeadm create token</code>.</p>
