How to automatically deploy your public ssh key to Openstack cloud server

Keeping secure all your  passwords when creating new cloud servers is very unpractical and it is a big management burden.

Problem

How to create a new cloud server and automatically deploy ssh authorized_keys file with our public ssh key.

Solution description with demonstration

• Generate a new pub and private key pair that your are going to be using with key authentication for all new cloud servers
• Rename and save your keys so you don't override them (keep the private key secure of course!)
• Create a  new cloud server (cs) with your public key saved automatically in authorized_keys file
• Login to cs using your private key

References

http://developer.rackspace.com/blog/step-by-step-walkthrough-to-using-chef-to-bootstrap-windows-nodes-on-the-rackspace-cloud.html