[root@ha01 /]# cd /etc/ssh
[root@ha01 ssh]# ssh-keygen -t rsa -N "" (該步驟生成key公私密鑰對，-N ""表示密鑰對短語為空)
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
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:
82:2c:74:43:8e:16:f4:ef:ac:91:0f:d7:6f:a6:f3:59 root@ha01

[root@ha01 ssh]# scp /root/.ssh/id_rsa.pub [email protected]:/root/.ssh/authorized_keys

[root@ha01 ssh]# scp /root/.ssh/id_rsa.pub [email protected]:/root/.ssh/

[root@ha02 /]# cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys

[root@ha01 ssh]# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]

[root@ha01 ssh]# ssh ha02
Last login: Fri Apr 8 10:41:28 2011 from ha01