<p>I encountered as below when executing sudo kubeadm init
Help me~~</p>
<pre><code>$ sudo kubeadm init
[init] Using Kubernetes version: v1.24.1
[preflight] Running pre-flight checks
        [WARNING SystemVerification]: missing optional cgroups: blkio
error execution phase preflight: [preflight] Some fatal errors occurred:
        [ERROR CRI]: container runtime is not running: output: E0605 10:35:34.973561   12491 remote_runtime.go:925] &quot;Status from runtime service failed&quot; err=&quot;rpc error: code = Unimplemented desc = unknown service runtime.v1alpha2.RuntimeService&quot;
time=&quot;2022-06-05T10:35:34+09:00&quot; level=fatal msg=&quot;getting status of runtime: rpc error: code = Unimplemented desc = unknown service runtime.v1alpha2.RuntimeService&quot;
, error: exit status 1
[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`
To see the stack trace of this error execute with --v=5 or higher
</code></pre>

Jaehyun Lee
<p>work around found here :
<a href="https://github.com/containerd/containerd/issues/4581" rel="noreferrer">https://github.com/containerd/containerd/issues/4581</a></p>
<pre><code>rm /etc/containerd/config.toml
systemctl restart containerd
kubeadm init
</code></pre>
