gistfile1.txt

[root@server01 puppet]# hiera -c hiera.yaml -d apache::package
DEBUG: Mon Jul 21 11:07:17 -0700 2014: Hiera YAML backend starting
DEBUG: Mon Jul 21 11:07:17 -0700 2014: Looking up apache::package in YAML backend
DEBUG: Mon Jul 21 11:07:17 -0700 2014: Looking for data source nonexistenttestlevel
DEBUG: Mon Jul 21 11:07:17 -0700 2014: Cannot find datafile /etc/puppet/hieradata/nonexistenttestlevel.yaml, skipping
DEBUG: Mon Jul 21 11:07:17 -0700 2014: Looking for data source common
nil
[root@server01 puppet]# cat hiera.yaml
---
:merge_behavior: deeper
:backends:
 - yaml
:logger: console
:yaml:
 :datadir: /etc/puppet/hieradata
:hierarchy:
 - nonexistenttestlevel
 - fqdn/%{fqdn}
 - env/%{environment}/%{fqdn}
 - osfamily/%{osfamily}
 - lsbdistcodename/%{lsbdistcodename}
 - common

[root@server01 puppet]# grep apache::package -ir hieradata/
hieradata/osfamily/RedHat.yaml:apache::package: 'httpd'