I've been researching this for a few days and I've reached a level of
desperation sufficient to post.
We want to clean up our somewhat baroque Hiera structure and we've come up
with a beautiful solution -- assigning multiple roles per host.
Our hierarchy would look something like this, more or less:
- roles/%{role}
- datacenters/%{datacenter}/%{cluster}
- datacenters/%{datacenter}
- default
The idea is to use facter_dot_d from stdlib and assign roles on hosts like
this:
---
role:
- hadoop-datanode
- hadoop-namenode
Issue number one, facter not supporting arrays, can be overcome with
switching to a 'roles' fact and splitting it into a role array, either with
a function or with puppet's built in split.
---
roles: hadoop-datanode,hadoop-namenode
Issue number two, however, is bigger: hiera doesn't allow a level in
hierarchy to be an array. We don't really want to do %{role1}, %{role2} ..
%{role42}. Is there no non-kludgy solution for this?
I found https://github.com/puppetlabs/hiera/pull/48 which looks exactly
like what we need, but the commit has been rejected (which made me very
sad).
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