<p>I just joined a team where they have and existing Kubernetes Cluster running in bare metal servers.
I have ssh access to the master server and nodes and I can see the Kubernetes internal pods (etcd, kube-proxy, etc) running when I execute:</p>

<pre><code>docker ps
</code></pre>

<p>From here how can I add a user and my laptop certificate to the Cluster?</p>

<p>Thanks in advance. </p>

<p>If the cluster was created using kubeadm then it should have a kubeconfig file in the <code>master</code> at <code>/etc/kubernetes/admin.config</code>. You can use kubeconfig files in kubectl with <code>--kubeconfig=/path/to/my.config</code>
If the kubeconfig is not there the administrators probably have a reason for that and you should ask them to add you as an user and create a kubeconfig for you so you can use kubectl in your own machine.</p>

<p>Besides that, <a href="http://kubeadm%20alpha%20kubeconfig%20user%20--client-name=foo" rel="nofollow noreferrer">there is an alpha feature of kubeadm</a> enabling the configuration of new users:</p>

<blockquote>
<pre><code>  # Output a kubeconfig file for an additional user named foo
  kubeadm alpha kubeconfig user --client-name=foo
</code></pre>
</blockquote>
