ssh 通过密钥连接

ssh-keygen
ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]

上面ssh-copy-id将数据写入到服务器的 ~/.ssh/authorized_keys 里面, 当然也可以手动拷贝.
客户端: cat ~/.ssh/id_rsa.pub 复制
服务端: vim ~/.ssh/authorized_keys 粘贴