Linux 实现服务器访问服务器之前免密码访问

A:Server 10.2.15.123
 cd /home/rd/.ssh/
 ssh-keygen -t rsa
  3次回车
 ssh [email protected] "chmod 0700 .ssh"
 scp id_rsa.pub [email protected]:.ssh/id_rsa.pub
B:Server 10.2.15.124
 touch .ssh/authorized_keys 如果：authorized_keys已存在可跳过此步骤
 chmod 600 .ssh/authorized_keys
 more .ssh/id_rsa.pub >>.ssh/authorized_keys
 

完成。此时就可以再123服务器上 ssh 10.2.15.124免密码进入了。