Failed to get system container stats for "/system.slice/docker.service": failed to get cgroup sta...

kubelet 报错：
Failed to get system container stats for "/system.slice/kubelet.service": failed to get cgroup stats for "/system.slice/kubelet.service": failed to get container info for "/system.slice/kubelet.service": unknown container "/system.slice/kubelet.service"

vim 编辑 kubelet.service 文件
添加
--runtime-cgroups=/systemd/system.slice --kubelet-cgroups=/systemd/system.slice