Hierahandson

From Gridkaschool
Revision as of 12:03, 4 September 2014 by BenJones (talk | contribs)

This is our hiera hierarchy:

   environments/%{::environment}/hieradata/%{::certname}
   environments/%{::environment}/hieradata/%{::role}
   environments/%{::environment}/hieradata/%{::osfamily}
   environments/%{::environment}/hieradata/common
   hieradata/common
  1. Enhance the apache module with hiera
    1. In the root of your environment, "mkdir hieradata"
    2. cd hieradata
    3. touch $(hostname).desy.de.yaml
    4. touch web.yaml data.yaml compute.yaml
    5. touch RedHat.yaml
    6. touch common.yaml
    7. convert params to hiera() calls
      1. use "common".yaml for now
    8. convert the direct heira() calls to automatic lookups. Remember that if a class is called "foo" and it has a parameter "$bar" then you need a hiera key foo::bar
  2. In your environment, using at least 2 of the fqdn / role or osfamily yaml files you've created, add different values and see how they get used / override values in other parts of the hierarchy

Bonus:

  1. Try using hiera_include to include a class