DevOps: Puppet, Docker, and Kubernetes

Pushing code around with Git

As we have already seen in the decentralized model, Git can be used to transfer files between machines using a combination of ssh and ssh keys. It can also be useful to have a Git hook do the same on each successful commit to the repository.

There exists a hook called post-commit that can be run after a successful commit to the repository. In this recipe, we'll create a hook that updates the code on our Puppet master with code from our Git repository on the Git server.

Getting ready

Follow these steps to get started:

1. Create an ssh key that can access your Puppet user on your Puppet master and install this key into the Git user's account on git.example.com:

   [git@git ~]$ ssh-keygen -f ~/.ssh/puppet_rsa
   Generating public/private ...