=====Setting up Password Less sssh between 2 servers=====

First create a user

<code> useradd data-sync </code>

then create the ssh key

<code>ssh-keygen -t rsa -b 2048 </code>

finally copy the key over to the other server. 

<code>  ssh-copy-id -i ~/.ssh/id_rsa.pub data-sync@other-server</code>

finally try logging in on the other servers using ssh


You can also copy the key accross using 
<code>cat ~/.ssh/id_rsa.pub | ssh user@ssh-server-ip "cat >> ~/.ssh/authorized_keys" </code>