Linux Dual-Machine Trust

Environment:

192.168.75.128 redhat6.5 x86_64

192.168.75.130 redhat6.5 x86_64

First, operate on the 192.168.75.130

1, the public key and the private key pair are generated under the ~/.ssh directory.

# 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 appends the contents of the public key id_rsa.pub to the ~/of the remote machine. Ssh/authorized_key. File

# ssh-copy-id-i ~/.ssh/id_rsa.pub 192.168.75.128

[email protected] ' s password:

Now try logging to the machine, with "ssh ' 192.168.75.128 '", and check in:

. Ssh/authorized_keys

To make sure we haven ' t added extra keys so you weren ' t expecting.

3, log on to the remote machine does not enter the password, after landing will be the other party's information, recorded in the Known_hosts file, the first login need to enter Yes

# SSH 192.168.75.128

# SSH Slave.localdomain #如果需要主机名登陆, also need to log in early, because the first login need to enter Yes

4. No password required to log on to the machine

# ssh-copy-id-i ~/.ssh/id_rsa.pub 192.168.75.130

# SSH 192.168.75.130

# SSH Mater.localdomain

Second, do the same operation on the 192.168.75.128

1, the public key and the private key pair are generated under the ~/.ssh directory.

# 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 appends the contents of the public key id_rsa.pub to the ~/of the remote machine. Ssh/authorized_key. File

# ssh-copy-id-i ~/.ssh/id_rsa.pub 192.168.75.130

[email protected] ' s password:

Now try logging to the machine, with "ssh ' 192.168.75.130 '", and check in:

. Ssh/authorized_keys

To make sure we haven ' t added extra keys so you weren ' t expecting.

3, log on to the remote machine does not enter the password, after landing will be the other party's information, recorded in the Known_hosts file, the first login need to enter Yes

# SSH 192.168.75.130

# SSH Master.localdomain #如果需要主机名登陆, also need to log in early, because the first login need to enter Yes

4, the landing of the machine does not require a password, if there is a login host name,

# ssh-copy-id-i ~/.ssh/id_rsa.pub 192.168.75.128

# SSH 192.168.75.128

# SSH Slave.localdomain

Reference: http://blog.chinaunix.net/uid-26284395-id-2949145.html

This article from the "Small Fish Blog" blog, reproduced please contact the author!

Linux Dual-Machine Trust