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
[root@node1 ~]# ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
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:
b4:51:7e:1e:52:61:cd:fb:b2:98:4b:ad:a1:8b:31:6d root@node1.ehowstuff.local
The key's randomart image is:
+--[ RSA 2048]----+
| . ++ |
| o o o |
| o o o . |
| . o + .. |
| S . . |
| . .. .|
| o E oo.o |
| = ooo. |
| . o.o. |
+-----------------+
[root@node1 ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub 192.168.0.10
root@192.168.0.10's password:
Now try logging into the machine, with "ssh '192.168.0.10'", and check in:
.ssh/authorized_keys
to make sure we haven't added extra keys that you weren't expecting.
[root@node1 ~]# ssh root@192.168.0.10
Last login: Sun Dec 13 14:03:20 2015 from www.ehowstuff.local