Chef enables you to automate your infrastructure. It provides a command line tool called knife to help you manage your configurations. Using the knife EC2 plugin you can manage your Amazon EC2 instances with Chef. knife EC2 makes it possible to create and bootstrap Amazon EC2 instances in just one line – if you go through a few setup steps. In this article, I want to show you how to setup your Chef installation and AWS configuration so that you can easily bootstrap new Amazon EC2 instances with Chef’s knife.