Run Containerd with Kata Containers

Just simple add these lines into file /etc/containerd/config.toml:

...
...
...
[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.kata]
  runtime_type = "io.containerd.kata.v2"
...
...
...

Download and untar Kata Containers to root path “/”

$ ls -l /opt/kata
total 44
drwxr-xr-x 2 root root  4096 Sep 19 20:31 bin
drwxr-xr-x 2 root root  4096 Aug 16 01:52 include
drwxr-xr-x 4 root root  4096 Aug 16 01:52 lib
drwxr-xr-x 2 root root  4096 Aug  9 17:45 libexec
drwxr-xr-x 3 root root  4096 Sep 19 20:36 runtime-rs
drwxr-xr-x 8 root root  4096 Sep 19 20:36 share
-rw-r--r-- 1 root root    29 Sep 19 21:28 VERSION
-rw-r--r-- 1 root root 13702 Sep 19 21:28 versions.yaml

And make this link file:

$ sudo ln -s /opt/kata/bin/containerd-shim-kata-v2 /usr/local/bin/containerd-shim-kata-v2

Restart containerd and apply this RuntimeClass

apiVersion: node.k8s.io/v1
handler: kata
kind: RuntimeClass
metadata:
  name: kata

Create deployment with “runtimeClassName: kata”

Result:

$ k describe pod kata-7fc5b44bf5-nv8ln 
Name:                kata-7fc5b44bf5-nv8ln
Namespace:           default
Priority:            0
Runtime Class Name:  kata
Service Account:     default
...
...
...

kata container (containerd-shim — qemu-system-x86)

That is all.