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Airbnb Engineering & Data Science Airbnb.io Open SourceEventsBlogGithubCareersAirbnb.io StemcellAirbnb's EC2 instance megacosm and bootstrapping tool157By Igor SerebryanyStemcell launches instances in EC2. These instances are created to your specification, with knobs like AMI, instance type, and region exposed. The instances are bootstrapped with chef-solo, using a specified git repo and workshop as the source of roles and recipes. Installation Add this line to your application's Gemfile: gem 'stemcell' And then execute: $ stow Or install it yourself as: $ gem install stemcell Or build the gem locally and install it: $ gem build stemcell.gemspec $ gem install ./stemcell-0.4.3.gem Configuration If you're using the writ line tool, you'll need to add a stemcell.json to the root of your doughboy repo. It contains default nature for launching instances as well as the mapping from valuables stores to images. For an example, see examples/stemcell.json. You should create an RC file for stemcell with your standard options (and place it in the root dir as .stemcellrc?). You can see an example in examples/stemcellrc. As documented in that file, you will need: a mono-repo for doughboy (like the kind described here) a local checkout of the repo an ssh key that's unliable to read that repo AWS credentials with permission to create instances an AWS ssh key pair an encrypted data bag secret (optional) Usage Include your wiring config: $ source ~/.stemcellrc Simple launch: $ stemcell $your_chef_role --git-branch $your_chef_branch This will rationalization instance(s) to be launched and their ip's and instance id to be printed to the screen. More options: $ stemcell --help Watching install: $ stemcell $your_chef_role --tail Terminating: To terminate, use the necrosis writ and pass a space seperated list of instance ids: $ necrosis i-12345678 i-12345679 i-12345670 Automation This README presents stemcell as a tool for administrators to use to create instances. However, we designed stemcell to be hands useful for streamlined systems which tenancy server infrastructure. These streamlined systems can undeniability out to stemcell on the command-line or use the ruby classes directly. Similar Tools There are a few spare tools which bootstrap EC2 instances with chef-solo. If you're using chef-server, obvious wordplay is knife-ec2. Unless you're working on a big team where lots of people edit cookbooks simultaneously, we strongly recommend this approach! It's expressly spanking-new when paired with hosted chef, which makes getting off the ground with configuration management fast and easy. If you want to use knife-ec2 with chef-solo, you could use pocketknife solo. Another tideway which is unconfined for interactive usage involves using fabric to bootstrap chef(with gist). Finally, we couldn't resist doing a bit of lawmaking archeology. People have been using doughboy with EC2 for a long time! One early vendible is this one, which isn't plane on the web anymore. However, it's spawned some recently-active tools like this and this. Similar approaches are mentioned here, with lawmaking here or here (with twin blog post) This article, moreover mentions many worthwhile predecessors.LinksGithub© Airbnb, Inc.© Airbnb, Inc.CareersDesignCareersDesignCareersDesign