Steps to communicate two servers using SSH
To build communication between two servers using SSH, follow the four steps on both the servers to end a successful communication.
On Server one:
- Enter the password and retype it for confirmation.
- Enter all values and continue with yes.
- Make that add the user as a sudo user.
- Add the content under user privilege specification.
- Press these keys at a time, CTRL X + Y + Enter.
- Change the sshd_config file for password Authentication.
- Replace "YES" in the place of "NO".
- Now, Save and exit it.
On Server Two:
Just repeat the steps followed for server one on server two.
Server one: (172.31.10.155)
- Switch to the user.
- # su naresh
- ssh <privateIP_server_two>
- Enter the user password.
- Successfully logged into Sever two (172.31.4.50) with a password.
- Now, exit from server 2.
Steps for generating Passwordless Authentication:
To communicate two servers using SSH w/o password, follow the below instructions for successful password less authentication:
- Generate ssh-keygen for password-less interaction on servers.
- Change the directory into a user group.
- Ssh-copy-id <privateIP_server_two>
- Now, you can connect server two from server one using ssh without a password.
These two ways (i) Communicate 2 servers using SSH and (ii) Generating ssh-keygen for password-less authentication is explained with instructions, commands, and screenshots to make your work easier.