docker-machine

分发密钥
[root@server1 ~]# ssh-keygen

[root@server1 ~]# mv docker-machine-Linux-x86_64-0.16.1 docker-machine
[root@server1 ~]# chmod +x docker-machine
[root@server1 ~]# mv docker-machine /usr/local/bin/
[root@server1 ~]# ssh-copy-id server2

创建远程主机
[root@server1 ~]# docker-machine create --driver generic --generic-ip-address=172.25.32.2 server2
Running pre-create checks…
Creating machine…
(server2) No SSH key specified. Assuming an existing key at the default location.
Waiting for machine to be running, this may take a few minutes…
Detecting operating system of created instance…
Waiting for SSH to be available…
Detecting the provisioner…
Provisioning with redhat…
Copying certs to the local machine directory…
Copying certs to the remote machine…
Setting Docker configuration on the remote daemon…
Error creating machine: Error running provisioning: Unable to verify the Docker daemon is listening: Maximum number of retries (10) exceeded

导入use命令的执行环境并立刻执行，这样就可以使用use命令方便的切换容器
[root@server1 ~]# source docker-machine.bash
[root@server1 ~]# source docker-machine-prompt.bash
[root@server1 ~]# source docker-machine-wrapper.bash
[root@server1 ~]# docker-machine use server2##qiehuan
Active machine: server2

[root@server3 ~]# yum install -y docker-ce-18.09.7-3.el7.x86_64.rpm
[root@server3 ~]# systemctl start docker
[root@server1 ~]# docker-machine create --driver generic --generic-ip-address=172.25.32.3 server3
[root@server1 ~]# docker-machine use server3
Active machine: server3

[root@server1 ~]# docker-machine use -u##返回服务器
Active machine: