CentOS (rsa & dsa) 公钥与密钥的使用
1，基本环境系统版本
$ cat /etc/issue;uname -aCentOS release 6.3 (Final)Kernel \r on an \mLinux davidserver 2.6.32-279.el6.x86_64 #1 SMP Fri Jun 22 12:19:21 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
用户
centospub:x:502:502::/home/centospub:/bin/bash
密码
centospub
管理机
10.0.0.9
被管理机
10.0.0.10
2，管理机生成公钥和密钥
$ ssh-keygen -t dsaGenerating public/private dsa key pair.Enter file in which to save the key (/home/centospub/.ssh/id_dsa):Created directory '/home/centospub/.ssh'.Enter passphrase (empty for no passphrase):Enter same passphrase again: Your identification has been saved in /home/centospub/.ssh/id_dsa.Your public key has been saved in /home/centospub/.ssh/id_dsa.pub.The key fingerprint is:19:e8:fd:c8:01:32:da:a3:18:de:7e:83:c4:2d:f2:7f centospub@davidserver
文件修改
$ cd .ssh/$ lsid_rsa.pub id_rsa$ mv id_rsa.pub authorized_keys$ chmod 400 authorized_keys
3，将公钥传到被管理机
$ scp authorized_keys centospub@10.0.0.10:/home/centospub/.sshThe authenticity of host '10.0.0.10 (10.0.0.10)' can't be established.RSA key fingerprint is 6e:49:32:73:8d:40:4e:f2:ee:dc:48:fb:3e:37:a3:b8.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added '10.0.0.10' (RSA) to the list of known hosts.shuqing@10.0.0.10's password: id_dsa.pub 100%602 0.16KB/s 00:00
4，管理机通过公钥连被管理机
$ ssh centospub@10.0.0.10
指定私钥
$ ssh centospub@10.0.0.10 -i .ssh/id_dsa.it.20120915
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