DevOps: Puppet, Docker, and Kubernetes

Writing a papply script

We'd like to make it as quick and easy as possible to apply Puppet on a machine; for this we'll write a little script that wraps the puppet apply command with the parameters it needs. We'll deploy the script where it's needed with Puppet itself.

How to do it...

Follow these steps:

1. In your Puppet repo, create the directories needed for a Puppet module:

   t@mylaptop ~$ cd puppet/modules
   t@mylaptop modules$ mkdir -p puppet/{manifests,files}
   

2. Create the modules/puppet/files/papply.sh file with the following contents:

   #!/bin/sh sudo puppet apply /etc/puppet/cookbook/manifests/site.pp \--modulepath=/etc/puppet/cookbook/modules $*

3. Create the modules/puppet/manifests/init.pp file with the following contents:

   class puppet { file { '/usr/local/bin/papply': ...