1、centos7.4下

yum install ansible

默认可以yum，如果不行先 rpm -ivh https://mirror.webtatic.com/yum/el7/epel-release.rpm

2、配置SSH验证

#服务端
ssh-keygen

vi /etc/ansible/hosts
[test-servers]
192.168.140.56
192.168.140.57

#客户端
ssh-copy-id -i [email protected]
ssh-copy-id -i [email protected]

3、执行shell命令

ansible -m command -a "uptime" 'test-servers'       #执行uptime
ansible -m command -a "useradd mark" 'test-servers' #增加用户