1, create key

[weblogic@v0A-123-100-228 ~]$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/weblogic/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/weblogic/.ssh/id_rsa.
Your public key has been saved in /home/weblogic/.ssh/id_rsa.pub.
The key fingerprint is:
24:2a:dd:cb:e6:78:7f:d9:71:25:ce:a7:c7:d9:59:d3 weblogic@v0A-123-100-228

2, copy key

[weblogic@v0A-123-100-228 ~]$ ssh-copy-id -i ~/.ssh/id_rsa.pub weblogic@10.123.100.229
30
weblogic@10.123.100.229's password:
Now try logging into the machine, with "ssh 'weblogic@10.123.100.229'", and check in:

.ssh/authorized_keys

to make sure we haven't added extra keys that you weren't expecting.

3, check login

[weblogic@v0A-123-100-228 ~]$ ssh 'weblogic@10.123.100.229'
Last login: Fri Mar 13 20:48:02 2015 from 10.123.100.228
[weblogic@v0A-123-100-229 ~]$

指定ssh端口

[weblogic@v0A-123-100-228 ~]$ ssh-copy-id -i ~/.ssh/id_rsa.pub 'weblogic@10.123.100.229 -p 8080'

weblogic@10.123.100.229's password:
Now try logging into the machine, with "ssh weblogic@10.123.100.229 -p 8080", and check in:

.ssh/authorized_keys

to make sure we haven't added extra keys that you weren't expecting.