1、Failed to get system container stats for “/system.slice/docker.service

修改kubelet参数，如下：

  1. [Unit]
  2. Description=kubelet: The Kubernetes Node Agent
  3. Documentation=https://kubernetes.io/docs/
  5. [Service]
  6. ExecStart=/usr/bin/kubelet --cgroup-driver=systemd  --runtime-cgroups=/systemd/system.slice --kubelet-cgroups=/systemd/system.slice
  7. Restart=always
  8. StartLimitInterval=0
  9. RestartSec=10
  11. [Install]
  12. WantedBy=multi-user.target