ssh無需密碼登錄linux服務(wù)器

螞蟻沒問題

使用下例中ssky-keygen和ssh-copy-id，僅需通過3個步驟的簡單設(shè)置而無需輸入密碼就能登錄遠(yuǎn)程Linux主機(jī)。
ssh-keygen 創(chuàng)建公鑰和密鑰。
ssh-copy-id 把本地主機(jī)的公鑰復(fù)制到遠(yuǎn)程主機(jī)的authorized_keys文件上。
ssh-copy-id 也會給遠(yuǎn)程主機(jī)的用戶主目錄（home）和~/.ssh, 和~/.ssh/authorized_keys設(shè)置合適的權(quán)限 。

步驟1: 用 ssh-key-gen 在本地主機(jī)上創(chuàng)建公鑰和密鑰

1. ligh@local-host$ ssh-keygen -t rsa
   
2. Enter file in which to save the key (/home/jsmith/.ssh/id_rsa):[Enter key]  
   
3. Enter passphrase (empty for no passphrase): [Press enter key]
   
4. Enter same passphrase again: [Pess enter key]
   
5. Your identification has been saved in /home/jsmith/.ssh/id_rsa.
   
6. Your public key has been saved in /home/jsmith/.ssh/id_rsa.pub.  
   
7. The key fingerprint is: 33:b3:fe:af:95:95:18:11:31:d5:de:96:2f:f2:35:f9  
   
8. ligh@local-host

復(fù)制代碼

步驟2: 用 ssh-copy-id 把公鑰復(fù)制到遠(yuǎn)程主機(jī)上

1. ligh@local-host$ ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.0.3
   
2. ligh@remote-host‘s password:
   
3. Now try logging into the machine, with ―ssh ?remote-host‘‖, and check in:  
   
4. .ssh/authorized_keys to make sure we haven‘t added extra keys that you weren‘t expecting.

復(fù)制代碼

[注: ssh-copy-id 把密鑰追加到遠(yuǎn)程主機(jī)的 .ssh/authorized_key 上.]

1. ligh@local-host$ ssh remote-host  
   
2. Last login: Sun Nov 16 17:22:33 2008 from 192.168.1.2  
   
3. ligh@remote-host[        DISCUZ_CODE_11        ]nbsp;

復(fù)制代碼

[注: 你現(xiàn)在已經(jīng)登錄到了遠(yuǎn)程主機(jī)上]

nswcfd

good,  以前第二步都是手工操作，原來有現(xiàn)成的命令啊。

lyhabc

很早已經(jīng)有了
http://blog.chinaunix.net/uid-26284395-id-2949145.html

woxizishen

http://72891.cn/thread-4162576-1-1.html
樓主不是原版的，看看上面openssh應(yīng)用無需輸賬號和密碼的三個不同應(yīng)用案例

Shell_HAT

http://blog.chinaunix.net/uid-10038128-id-2759648.html
http://72891.cn/thread-3619435-1-1.html