ls -al ~/.ssh
# Lists the files in your .ssh directory, if they exist
如果有文件id_rsa.pub 或 id_dsa.pub 说明已经创建过SSH密钥,导入即可。
生成新的SSH密钥。
在服务器上制作密钥对。首先用密码登录到你打算使用密钥登录的账户,然后执行以下命令:
[root@host ~]$ ssh-keygen <== 建立密钥对
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): <== 按 Enter
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase): <== 输入密钥锁码,或直接按 Enter 留空
Enter same passphrase again: <== 再输入一遍密钥锁码
Your identification has been saved in /root/.ssh/id_rsa. <== 私钥
Your public key has been saved in /root/.ssh/id_rsa.pub. <== 公钥
The key fingerprint is: xxxxxxx
创建完成,安装公钥。
输入以下命令,在服务器上安装公钥:
[root@host ~]$ cd .ssh
[root@host .ssh]$ cat id_rsa.pub >> authorized_keys