At Etsy automation is important and necessary to keep up with our fast-paced infrastructure that is rapidly growing. We need to be able to scale our systems as quickly as possible. Keeping in mind that our production stack exclusively runs on physical hardware. The old way of provisioning servers worked at the time, but now that we have over 1,000 servers it was time to revisit our host provisioning methods. Various tools where developed to create a "1-click" host build solution, Chef & Cobbler are a big part of the process.