快速配置SSH证书登录

环境:

在 CentOS 5/6/7、RHEL 5/6/7 和 Oracle Linux 6/7 上测试通过

使用 ssh-key-gen 命令生成公钥和私钥

用 ssh-copy-id 命令将公钥复制或上传到远程主机，并将身份标识文件追加到节点2的 ~/.ssh/authorized_keys 中

用户是root

1. [root@node1 ~]# ssh-keygen
2. Generating public/private rsa key pair.
3. Enter file in which to save the key (/root/.ssh/id_rsa):
4. Enter passphrase (empty for no passphrase):
5. Enter same passphrase again:
6. Your identification has been saved in /root/.ssh/id_rsa.
7. Your public key has been saved in /root/.ssh/id_rsa.pub.
8. The key fingerprint is:
9. b4:51:7e:1e:52:61:cd:fb:b2:98:4b:ad:a1:8b:31:6d root@node1.ehowstuff.local
10. The key's randomart image is:
11. +--[ RSA 2048]----+
12. | . ++ |
13. | o o o |
14. | o o o . |
15. | . o + .. |
16. | S . . |
17. | . .. .|
18. | o E oo.o |
19. | = ooo. |
20. | . o.o. |
21. +-----------------+
    
    
    

1. [root@node1 ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub 192.168.0.10
2. root@192.168.0.10's password:
3. Now try logging into the machine, with "ssh '192.168.0.10'", and check in:
5. .ssh/authorized_keys
7. to make sure we haven't added extra keys that you weren't expecting.

1. [root@node1 ~]# ssh root@192.168.0.10
2. Last login: Sun Dec 13 14:03:20 2015 from www.ehowstuff.local

来自为知笔记(Wiz)