1 创建ssh秘钥
 yum install epel-release -y
 yum install sshpass -y
 ssh-keygen -t rsa
2 批量复制秘钥并授权
 ansible web -m shell -a ‘mkdir ~/.ssh’ -k
 ansible web -m copy -a ‘src=~/.ssh/id_rsa.pub dest=~/.ssh/authorized_keys mode=0600’ -k
3 测试
 ssh 10.0.0.20
 ssh 10.0.0.21
问题1:
 [root@ansible-10 ansible]# ansible web -m ping -k
 SSH password:
 10.0.0.21 | FAILED! => {
 “msg”: “to use the ‘ssh’ connection type with passwords, you must install the sshpass program”
 }
 10.0.0.20 | FAILED! => {
 “msg”: “to use the ‘ssh’ connection type with passwords, you must install the sshpass program”
 }
解决方法:
 yum install epel-release -y
 yum install sshpass -y