centos7-ssh免秘钥登录

实验环境：

 主机1：controller    ip:192.168.1.10

   

 主机2：compute      ip:192.168.2.10

 controller主机执行ssh-keygen -t rsa生成秘钥

查看秘钥是否生成 

compute主机执行ssh-keygen -t rsa生成秘钥

 controller主机给compute主机分发公钥：scp .ssh/id_rsa.pub 192.168.1.20:/root/.ssh/authorized_keys

controller主机执行：cp .ssh/id_rsa.pub .ssh/authorized_keys   

两台主机均要修改authorized_keys文件权限为600  

chmod 600 .ssh/authorized_keys

controller主机免密码登录compute主机