### 执行 rke up 安装集群
报错如下：
```
WARN[0000] Failed to set up SSH tunneling for host [172.20.101.167]:
Can't retrieve Docker Info: error during connect: Get http://%2Fvar%2Frun%2Fdocker.sock...
> # **[Backups and Disaster Recovery](https://rancher.com/docs/rke/v0.1.x/en/installation/etcd-snapshots/)**
As of v0.1.7, you can configure a RKE cluster to automatically take snapshots of etcd. In ...
># **[Installation](https://rancher.com/docs/rke/v0.1.x/en/installation/)**
RKE is a fast, versatile Kubernetes installer that you can use to install Kubernetes on your Linux hosts. You can get start...
