Configuring the Mutual Trust Relationship

Procedure

1. Log in to node 1 as user root.
2. Generate the public and private keys.

   ssh-keygen -t rsa

   The following information is displayed:

   Generating public/private rsa key pair. Enter file in which to save the key (/home/deven/.ssh/id_rsa): (Press Enter.)
   Enter passphrase (empty for no passphrase): (Press Enter.)
   Enter same passphrase again: (Press Enter.)
   Your identification has been saved in /home/deven/.ssh/id_rsa.
   Your public key has been saved in /home/deven/.ssh/id_rsa.pub.
   The key fingerprint is:89:56:d6:4a:b2:6c:4a:05:............

   Press Enter after you enter the information required each time as prompted. The id_rsa and id_rsa.pub files are generated in the /root/.ssh/ directory.

3. Write id_rsa.pub to the authorized-keys file.

   cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys

4. Modify the permission of id_rsa.

   chmod 600 /root/.ssh/id_rsa

   

5. Copy anthorized-keys and id_rsa to node 2.

   scp /root/.ssh/authorized_keys IP address of node 2:/root/.ssh/

   After the command is executed, a message is displayed, indicating whether to connect to the node. Enter yes and then enter the password of node 2. The files are copied to node 2.

   scp /root/.ssh/id_rsaIP address of node 2:/root/.ssh/

   

6. Check whether the two servers can communicate with each other using using SSH.