Setting node-specific data with Hiera

In our hierarchy defined in hiera.yaml, we created an entry based on the hostname fact; in this section, we'll create yaml files in the hosts subdirectory of Hiera data with information specific to a particular host.

Getting ready

Install and configure Hiera as in the last section, and modify the hierarchy defined in the previous recipe to include a hosts/%{hostname} entry, as follows:

---
# Hiera 5 Global configuration file

version: 5
hierarchy:
  - name: "Per-host defaults"
    path: "hosts/%{::facts.hostname}.yaml"
  - name: "Per-OS defaults"
    path: "os/%{::facts.os.family}.yaml"
  - name: "Common data"
    path: "common.yaml"

How to do it...

1. Create a file at /etc/puppetlabs/puppet/data/hosts that is the hostname of your test node. For example, if your host is named testnode, the file would be named testnode.yaml.

2. Insert a specific message in this file:

message: 'This is the test node for the cookbook'

3. Run Puppet on two different test nodes to note the...