Linux 双机互信
环境：
192.168.75.128 redhat6.5 x86_64
192.168.75.130 redhat6.5 x86_64
一、在192.168.75.130上操作
1、在~/.ssh目录下产生公钥与私钥对.
# 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:
e4:bb:24:9c:f9:01:a8:80:4d:db:66:5b:47:48:c5:ca [email protected]
The key's randomart image is:
+--[ RSA 2048]----+
| .o. |
| . .. |
| . ...o |
|.o o .E+ |
|o o = o S |
| . + + = . |
| . . = + |
| + o |
| o |
+-----------------+
2、ssh-copy-id 将公钥id_rsa.pub的内容追加到远程机器的 ~/ .ssh/authorized_key.文件中
# ssh-copy-id -i ~/.ssh/id_rsa.pub 192.168.75.128
[email protected]'s password:
Now try logging into the machine, with "ssh '192.168.75.128'", and check in:
.ssh/authorized_keys
to make sure we haven't added extra keys that you weren't expecting.
3、登录到远程机器不用输入密码，登陆之后会将对方的信息，记录在known_hosts文件中，第一次登陆需要输入yes
# ssh 192.168.75.128
# ssh slave.localdomain #如果需要主机名登陆，也需要提前登陆一下，因为第一次登陆需要输入yes
4、登陆本机也不需要密码
# ssh-copy-id -i ~/.ssh/id_rsa.pub 192.168.75.130
# ssh 192.168.75.130
# ssh mater.localdomain
二、192.168.75.128 上做同样的操作
1、在~/.ssh目录下产生公钥与私钥对.
# 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:
e4:bb:24:9c:f9:01:a8:80:4d:db:66:5b:47:48:c5:ca [email protected]
The key's randomart image is:
+--[ RSA 2048]----+
| .o. |
| . .. |
| . ...o |
|.o o .E+ |
|o o = o S |
| . + + = . |
| . . = + |
| + o |
| o |
+-----------------+
2、ssh-copy-id 将公钥id_rsa.pub的内容追加到远程机器的 ~/ .ssh/authorized_key.文件中
# ssh-copy-id -i ~/.ssh/id_rsa.pub 192.168.75.130
[email protected]'s password:
Now try logging into the machine, with "ssh '192.168.75.130'", and check in:
.ssh/authorized_keys
to make sure we haven't added extra keys that you weren't expecting.
3、登录到远程机器不用输入密码，登陆之后会将对方的信息，记录在known_hosts文件中，第一次登陆需要输入yes
# ssh 192.168.75.130
# ssh master.localdomain #如果需要主机名登陆，也需要提前登陆一下，因为第一次登陆需要输入yes
4、登陆本机也不需要密码，如果有登陆主机名，
# ssh-copy-id -i ~/.ssh/id_rsa.pub 192.168.75.128
# ssh 192.168.75.128
# ssh slave.localdomain
参考:http://blog.chinaunix.net/uid-26284395-id-2949145.html
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