Linuxssh-copy-id三步实现ssh免密登陆

Posted 2021-03-22 爱啦啦

一、本地机器上使用ssh-keygen产生公钥私钥对

ssh-keygen -t rsa -C "[e-mail]"   --->执行完会在~/.ssh/下生成公钥私钥对

查看公钥私钥对：

wucaiyundeMacBook-Pro:~ wucaiyun$ cd ~/.ssh/
wucaiyundeMacBook-Pro:.ssh wucaiyun$ ll
total 24
 899401 0 drwx------   5 wucaiyun  staff   160 12 18 15:59 ./
 686353 0 drwxr-xr-x+ 31 wucaiyun  staff   992 12 19 16:42 ../
 908256 8 -rw-------   1 wucaiyun  staff  1823 12  5 23:25 id_rsa
 908257 8 -rw-r--r--   1 wucaiyun  staff   399 12  5 23:25 id_rsa.pub
1745218 8 -rw-r--r--   1 wucaiyun  staff   350 12 19 17:13 known_hosts

二、用ssh-copy-id将公钥复制到远程欲登陆机器中

ssh-copy-id -i .ssh/id_rsa.pub  [e-mail]

注意: ssh-copy-id 将key写到远程机器的 ~/ .ssh/authorized_key.文件中

三、ssh免密登陆

wucaiyundeMacBook-Pro:~ wucaiyun$ ssh [e-mail]

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