# ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): Created directory \'/root/.ssh\'. Enter passphrase (empty for no passphrase): #输入密码 Enter same passphrase again: #输入密码 Your identification has been saved in /root/.ssh/id_rsa. Your public key has been saved in /root/.ssh/id_rsa.pub. The key fingerprint is: 1c:37:a8:a3:65:a2:4a:89:ab:46:30:ad:54:d1:40:eb root@iZ28vo50eu5Z