Managing Docker with Puppet

Puppet can certainly install and manage the Docker service for you, just as it can any other software, but it can also do a lot more. It can download and run Docker images, build images from Dockerfiles, mount files and directories on the container, and manage Docker volumes and networks. We'll see how to do all these things in this chapter.

Installing Docker

Before we do anything else, we'll need to install Docker on our node (using Puppet, of course). The puppetlabs/docker_platform module is ideal for this.

1. If you've already installed the r10k module management tool, as shown in Chapter 7, Mastering modules, you're all set. Otherwise, run the following command to install r10k:

   sudo gem install r10k
   

2. Run the following commands to install the puppetlabs/docker_platform module:

   cd /etc/puppetlabs/code/environments/production
   sudo cp /vagrant/examples/Puppetfile.docker Puppetfile
   sudo r10k puppetfile install --verbose
   INFO     -> Updating module /etc/puppetlabs...