[root@rhce ~]# ssh-keygen -t rsa #可选dsa/ecdsa/ed25519/rsa/rsa1 Generating public/private rsa key pair. Enter fileinwhich to save the key (/root/.ssh/id_rsa): #默认存储路径,不需要输入,直接回车 Enter passphrase (empty for no passphrase): #不需要密码,直接回车 Enter same passphrase again: #直接回车 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: SHA256:IKIZhQjwslma218g/E7u3OQPjogvvZtmsfoZcRtDkXQ root@rhce The key's randomart image is: +---[RSA 2048]----+ |*...o.E | |oo .o | |o + o .| | % o ..| |B + = S | | o.==| |..oo+ + | |..=@ B .| |oBO+B +..| +----[SHA256]-----+切换到cd /root/.ssh/ [root@rhce .ssh]# pwd /root/.ssh [root@rhce .ssh]# ls -l total 12 -rw-------. 1 root root 1811 Jan 1022:38 id_rsa -rw-r--r--. 1 root root 391 Jan 1022:38 id_rsa.pub -rw-r--r--. 1 root root 177 Jan 1022:15 known_hosts