Ansible

Ansible is an open source IT configuration management and automation platform. It makes automation simple and effective.

Software

Start by installing ansible

apt-get install ansible

SSH Keys

ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/kale/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /home/kale/.ssh/id_rsa
Your public key has been saved in /home/kale/.ssh/id_rsa.pub

Transfer the ssh public key to the systems ansible is going to automate. The ssh public key is stored on a new clone as a part of the domain clone script.