error execution phase preflight: [preflight] Some fatal errors occurred:
        [ERROR CRI]: container runtime is not running: output: E0720 16:44:36.079618   71861 remote_runtime.go:925] "Status from runtime service failed" err="rpc error: code = Unimplemented desc = unknown service runtime.v1alpha2.RuntimeService"
time="2022-07-20T16:44:36+08:00" level=fatal msg="getting status of runtime: rpc error: code = Unimplemented desc = unknown service runtime.v1alpha2.RuntimeService"
, 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
[root@k8s-master containerd]#

二：解决方法

cat > /etc/containerd/config.toml <<EOF
[plugins."io.containerd.grpc.v1.cri"]
  systemd_cgroup = true
EOF

2.2）重启容器

systemctl restart containerd