通过SSH进行密钥认证自动登录Linux服务器

[root@xyly ~]# ifconfig eth0 | awk ‘/inet addr/{print }’inet addr:192.168.72.11 Bcast:192.168.72.255 Mask:255.255.255.0</p>
<p>[root@xyly ~]# ssh-keygen -t rsaGenerating public/private rsa key pair.Enter file in which to save the key (/root/.ssh/id_rsa): #密钥报存的位置和名称Enter passphrase (empty for no passphrase): #密钥为空Enter same passphrase again: #再一次输入Your identification has been saved in /root/.ssh/id_rsa. #私钥的位置Your public key has been saved in /root/.ssh/id_rsa.pub. #公钥的位置The key fingerprint is:04:c5:7a:57:f6:2e:9c:1f:b5:e7:45:b3:11:f3:c7:18 root@xyly

[root@xyly ~]# ssh-copy-id -i .ssh/id_rsa.pub root@192.168.72.129The authenticity of host ’192.168.72.129 (192.168.72.129)’ can’t be established.RSA key fingerprint is 3b:26:19:2e:51:ca:cc:de:ac:bc:00:09:f0:7c:7d:f1.Are you sure you want to continue connecting (yes/no)? yes #由于是第一次登录，服务器要进行确认Warning: Permanently added ’192.168.72.129′ (RSA) to the list of known hosts.Address 192.168.72.129 maps to localhost, but this does not map back to the address – POSSIBLE BREAK-IN ATTEMPT!root@192.168.72.129′s password:Now try logging into the machine, with “ssh ‘root@192.168.72.129′“, and check in:</p>
<p>.ssh/authorized_keys #把公钥上传的位置和公钥的文件名</p>
<p>to make sure we haven’t added extra keys that you weren’t expecting.

[root@localhost ~]# ll .ssh/authorized_keys-rw——- 1 root root 391 Aug 4 18:31 .ssh/authorized_keys

RSAAuthentication yesAuthorizedKeysFile .ssh/authorized_keys</p>
<p>/etc/init.d/sshd restart

[root@xyly ~]# ssh 192.168.72.129Address 192.168.72.129 maps to localhost, but this does not map back to the address – POSSIBLE BREAK-IN ATTEMPT!Last login: Thu Aug 4 18:08:05 2011 from 192.168.72.1[root@localhost ~]#

[root@localhost ~]# exitlogoutConnection to 192.168.72.129 closed.