Hiera setup

[Michael Zoet]

Hello to all,

I am in the process of changing a Puppet setup to use environments and hiera. The environment setup works fine but I have a problem setting up hiera.

I have  a basic Hiera setup in one environment but when I try to use it I get the following:

puppet master --compile example.com  --environment=testenv --debug

Info: Caching node for example.com
Debug: hiera(): Hiera YAML backend starting
Debug: hiera(): Looking up hiera_classes in YAML backend
Error: Undefined variable "::trusted.certname"; Undefined variable "trusted.certname" at /etc/puppet/environments/testenv/manifests/node.pp:1 on node example.com
Error: Undefined variable "::trusted.certname"; Undefined variable "trusted.certname" at /etc/puppet/environments/testenv/manifests/node.pp:1 on node  example.com
Error: Failed to compile catalog for node example.com: Undefined variable "::trusted.certname"; Undefined variable "trusted.certname" at /etc/puppet/environments/testenv/manifests/node.pp:1 on node example.com

I use as the hiera.yaml file the setup from https://docs.puppetlabs.com/hiera/3.0/complete_example.html, meaning my hiera.yaml file looks like this

---
:backends:
  - yaml
:yaml:
  :datadir: "/etc/puppetlabs/code/environments/%{environment}/hieradata"
:hierarchy:
  - "nodes/%{::trusted.certname}"
  - common

In node.pp I have just a

hiera_include('classes')

in this environment.

How do I get Puppet to populate %{::trusted.certname} with the certname for the host? Or better what do I need to configure, to get this setup working?

I am using Puppet 3.6.s on a SLES 12.1 distro.

Thx in advance for any hint and answer,
Michael