./rke up
报错如下：
panic: runtime error: slice bounds out of range [recovered]
panic: runtime error: slice bounds out of range
解决办法：
重新修改了cluster.yml文件

./rke up
报错如下：
FATA[0080] Failed to create [rke-worker-port-listener] container on host [192.168.18.132]:
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
解决办法：
cd /etc/docker/
mv key.json key.json.bak
  参考：https://blog.csdn.net/qq_42114918/article/details/81840335