<p>All.</p>
<p>I have questions about the purpose of root directory for containerd, docker, kubeadm.
I've been trying to change the root directory from default to specific directory.</p>
<p>As far as I known, there are 3 types of root directory like below.</p>
<ul>
<li>docker : --data-root /var/lib/docker</li>
<li>containerd : --root /var/lib/containerd</li>
<li>kubeadm : --root-dir /var/lib/kubeadm</li>
</ul>
<p>Please anyone let me know exactly about what those directories are used for.</p>
<p>Thanks.</p>

<p>These are the implementation specific paths for these runtimes. With docker all your containers, images and their related information is stored in /var/lib/docker,
same is the case for containerd.io which stores all its container related objects in /var/lib/containerd</p>
