<p>I want to extend my Kubernetes cluster by one node.</p>
<p>So I run the scale.yaml Ansible playbook:</p>
<pre><code>ansible-playbook -i inventory/local/hosts.ini  --become --become-user=root scale.yml
</code></pre>
<p>But I am getting the error message when uploading the control plane certificates happens:</p>
<pre><code>TASK [Upload control plane certificates] ***************************************************************************************************************************************************
ok: [jay]
fatal: [sam]: FAILED! =&gt; {&quot;changed&quot;: false, &quot;cmd&quot;: [&quot;/usr/local/bin/kubeadm&quot;, &quot;init&quot;, &quot;phase&quot;, &quot;--config&quot;, &quot;/etc/kubernetes/kubeadm-config.yaml&quot;, &quot;upload-certs&quot;, &quot;--upload-certs&quot;], &quot;delta&quot;: &quot;0:00:00.039489&quot;, &quot;end&quot;: &quot;2022-01-08 11:31:37.708540&quot;, &quot;msg&quot;: &quot;non-zero return code&quot;, &quot;rc&quot;: 1, &quot;start&quot;: &quot;2022-01-08 11:31:37.669051&quot;, &quot;stderr&quot;: &quot;error execution phase upload-certs: failed to load admin kubeconfig: open /etc/kubernetes/admin.conf: no such file or directory\nTo see the stack trace of this error execute with --v=5 or higher&quot;, &quot;stderr_lines&quot;: [&quot;error execution phase upload-certs: failed to load admin kubeconfig: open /etc/kubernetes/admin.conf: no such file or directory&quot;, &quot;To see the stack trace of this error execute with --v=5 or higher&quot;], &quot;stdout&quot;: &quot;&quot;, &quot;stdout_lines&quot;: []}
</code></pre>
<p>Anyone has an idea what the problem could be?</p>
<p>Thanks in advance.</p>

Ronny Forberger
<p>I solved it myself.</p>
<p>I copied the /etc/kubernetes/admin.conf and /etc/kubernetes/ssl/ca.* to the new node and now the scale playbook works. Maybe this is not the right way, but it worked...</p>
