SSH互信
在母机上
[root@lyucan ~]# ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa
Generating public/private rsa key pair.
/root/.ssh/id_rsa already exists.
Overwrite (y/n)? y
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:
f1:02:d9:85:de:39:ab:19:45:5c:b7:f2:92:0e:6d:4e root@lyucan.com
The key's randomart image is:
+--[ RSA 2048]----+
| o... . |
| o..o . . |
| o.oo .. . |
| ..o=. + |
| S.ooE . |
| ...* . |
| + o |
| o |
| |
+-----------------+
这样就不需要一步步敲了，这里-P指的是私钥的密码，不同于登录密码，这里空着。
然后将~/.ssh/id_rsa.pub复制到目标服务器上去
[root@noblank ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub root@103.214.143.94
root@103.214.143.94's password: #输入目标服务器密码
Now try logging into the machine, with "ssh 'root@103.214.143.94'", and check in:
.ssh/authorized_keys
to make sure we haven't added extra keys that you weren't expecting.
然后再登录就不需要输入密码了
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