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Vagrant

Despite the enormous increase in popularity lately, it seems some people still don’t know about this project or how it can improve your development work-flow.

So, what is it and why should you care?

Vagrant is a convenience tool for doing Virtual Machine based development. The obvious benefits that you get by using VMs for development are:

Of course, working primarily in VMs can also be a hassle. Here’s where vagrant comes in…

First of all, the VM is run headlessly in the background with your source files setup as a shared folder. This means you still work on the code locally on your host OS using your shell, your file manager, your editor. Just ssh into the VM whenever you need to to run your console, tests, and/or services. You can even hit these services from the host’s browser.

Vagrant also automates the task of provisioning. This prevents both the reliance on a golden image as well as the hassle of manually managing the environment in the VM as your app changes.

You specify a “base box” which can be at any stage of built-out-ness. Usually, it’s a vanilla server the same architecture and OS as your production boxes. You then specify chef recipes or puppet manifests to be run by vagrant to build out the box the rest of the way. For a long time now, Ops has understood configuration management, how to build out boxes from scratch in a reliable, repeatable way – it’s a solved problem. Vagrant lets us Devs leverage this too.

Beyond these benefits, vagrant does all this for a large variety of OS combinations and, so far, it’s always Just Worked.

So If any of this sounds interesting, I encourage you to checkout vagrantup.com; it’s super easy to get started and there’s a ton of articles, presentations, etc that can provide more details.

30 Aug 2012, tagged with