Tired of ensuring if whether each file in every server is synced? Planning on doing automated backups? If so, then this technique should come in handy for you.

Interested? Then follow the steps below:

Check if rsync over SSH works

Before you start, please ensure that you can rsync to your intended server over ssh using a password. With the following example, you can just send a simple file over to the intended server and see if it works or not:

rsync -avz -e ssh test.txt username@REMOTE_SERVER_IP_OR_DOMAIN:/path/to/folder/

Once you execute this command on the terminal, it'll prompt you for a password on the remote server, if it does, then it works.

Generate SSH Keys

If you want to do a passwordless SSH, you need to generate public and private SSH keys on the local server by typing the following command on the terminal:

Enter passphrase (empty for no passphrase):
Enter same passphrase again:

If you're prompted to enter a passphrase, just hit Enter and proceed until the key is generated. Once the keys are generated, they'll be in the ~/.ssh directory on your local server.

Copy public key to remote server

Using ssh-copy-id, you can copy the public key to the remote server:

ssh-copy-id -i ~/.ssh/id_rsa.pub REMOTE_SERVER_IP_OR_DOMAIN

Once executed, you'll be prompted to enter the password of the account on the remote server and if successful, the public key will be copied to the remote server and will be stored in it's appropriate location.

Perform Rsync over passwordless SSH

If you've come this far, then you should be able to SSH to the remote server without entering the password:


If it works, then perform the rsync operation again (above) and this time, it shouldn't prompt you to enter any password.

Hope you liked reading this short article!