Password Less SSH -- quick HowTo

Password less ssh:

This is a quick HowTo for setting up password less ssh.

For example we have two servers server1 and server2 and 

two users user1 in server1 and user2 in server2

Now from server 1 we want tgo password less ssh to server2 

For this we need to follow a few steps 

1. login to as user1 to server1 

2. run "ssh-key-gen -t rsa" from command prompt 

it will provide following out put

Generating public/private rsa key pair.

Enter file in which to save the key (/home/user1/.ssh/id_rsa):

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /home/user1/.ssh/id_rsa.

Your public key has been saved in /home/user1/.ssh/id_rsa.pub.

The key fingerprint is:

f6:61:a8:27:35:cf:4c:6d:13:22:70:cf:4c:c8:a0:23 user1@server1

Now you have private key at /home/user1/.ssh/id_rsa and

public key at /home/user1/.ssh/id_rsa.pub

3. Now we need to copy the content of /home/user1/.ssh/id_rsa.pub file to server2

4. login to server2 using user2 user

5. cd .ssh/

6. copy the entire content of /home/user1/.ssh/id_rsa.pub from server1 and put into authorized_keys

   i.e /home/user2/.ssh/authorized_keys of server2

7. If you already have authorized_keys file with some other keys , then just append to it.

8. Now you can ssh as user1@server to user2@server2 without being promted for password.