Test Kitchen on Docker with Kitematic

I’ve had the great opportunity in the past 4 or so months to really get going with chef, and writing automated infrastructure. It’s an incredibly deep world/community filled with loads of wonderful people and tools. One of the best tools for writing quality chef cookbooks is Test Kitchen. Test Kitchen by default uses a vagrant/virtual box environment to quickly converge and test a chef cookbook. But I’m ready to push this forward with docker for speed of convergence! Even better, I use a mac for my local machine and the docker team released an awesome beta of Kitematic to facilitate docker containers on Mac OS. Getting them set up together requires very little effort, but I wanted to note it here in case it was helpful!

Kitematic works extremely (hey, I haven’t used it so maybe it’s identical to) similarly to boot2docker. Sean (who wrote the kitchen-docker driver) offers an example for getting this working with boot2docker, which I only slightly extended.

First, get kitchen-docker installed via gem install kitchen-docker.

Second, export a few environment variables (or put these in your `.bash_profile):

export DOCKER_HOST=tcp://192.168.99.100:2376
export DOCKER_CERT_PATH=~/.docker/machine/machines/default
export DOCKER_TLS_VERIFY=1

Next, modify the driver in your .kitchen.yml file:

---
driver:
  name: docker
driver_config:
  require_chef_omnibus: true
  use_sudo: false
[rest of config here]

And finally: make sure kitematic is running and get going with your tests: kitchen test.

That’s it! Thanks!