Linux 设置 免密登录 到远程主机

  ssh-keygen

cat ~/.ssh/id_rsa.pub

 ssh-copy-id -i ~/.ssh/id_rsa.pub  root@192.168.135.89

/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed:     "/Users/zhangyunfei/.ssh/id_rsa.pub"

/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed

/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys

root@192.168.135.84's password: 

Now try logging into the machine, with:  "ssh 'root@192.168.135.84'"

and check to make sure that only the key(s) you wanted were added.

ssh root@192.168.135.89]