<p>I have created these files <em>ca.cert</em> and <em>kubelet.service</em> (systemd file with apiserver's IP and options). How can I simply add this new node to the cluster?</p>

manzion_111
<p>To do this in the latest version (tested on 1.12) you can issue following command on the master node:</p>

<pre><code>kubeadm token create --print-join-command
</code></pre>

<p>It will then print out a new join command (like the one you got after kubeadmn init):</p>

<pre><code>kubeadm join 192.168.1.101:6443 --token tokentoken.lalalalaqyd3kavez --discovery-token-ca-cert-hash sha256:complexshaoverhere
</code></pre>

<p>Now run the above command on worker node, it must have docker, kubelet and kubeadm installed. You will be able to join the worker node.</p>

<p>Refer this official document <a href="https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/" rel="nofollow noreferrer">here</a> for more details.</p>
