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node1:172.16.58.1
node2:172.16.58.3
node1--> node2
首先在node1生成秘鑰
執行命令ssh-keygen -P '' 詢問保存路徑直接回車默認即可， 后面提示私鑰保存為/root/.ssh/id_rsa 公鑰保存為/root/.ssh/id_rsa.pub |
[root@node1 ~]# ssh-keygen -P '' 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: dc:62:ba:81:ac:dd:d9:93:fa:b4:9b:21:8d:e7:98:8c root@node1.magedu.com The key's randomart p_w_picpath is: +--[ RSA 2048]----+ | | | | | | | . . | | S . | | . . = . | | o = =. | | o + %o+ | | . E OoBo | +-----------------+ |
把秘鑰傳給node2主機
ssh-copy-id -i .ssh/id_rsa.pub root@172.16.58.3 |
[root@node1 ~]# ssh-copy-id -i .ssh/id_rsa.pubroot@172.16.58.3 The authenticity of host '172.16.58.3 (172.16.58.3)' can'tbe established. RSA key fingerprint isdb:f8:11:fa:7d:30:95:44:1b:eb:ea:89:ee:fa:a1:27. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '172.16.58.3' (RSA) to the listof known hosts. root@172.16.58.3's password: Now try logging into the machine, with "ssh'root@172.16.58.3'", and check in:
.ssh/authorized_keys to make sure we haven't added extra keys thatyou weren't expecting. |
測試是否成功免密碼登陸,沒有提示輸入密碼
| ssh 172.16.58.3 'date';date |
| [root@node1 ~]# ssh 172.16.58.3 'date';date Wed Dec 31 16:51:41 CST 2014 Wed Dec 31 16:52:42 CST 2014 |
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