jcbollinger wrote:
> On Saturday, June 4, 2016 at 7:20:19 PM UTC-5, Helmut Schneider wrote:
> >
> > Hi,
> >
> > I'm new to puppet and read docs as much as possible, so forgive
> > some confusion in my code.
[Code]
> Consider this call:
>
> hiera_array ('apacheModules', '', 'ubuntu-common')
>
> It performs an array-merge lookup for key 'apacheModules', with
> hierarchy level 'ubuntu-common' inserted at the top of the hierarchy.
> That level is already in the hierarchy for the node, or so I must
> presume. Now remember that an array-merge lookup collects data from
> every level in the hierarchy, so if that duplicate level contains any
> data for the requested key then you will automatically get dupes for
> all those data.
>
> Even if you weren't getting dupes by virtue of having the same
> hierarchy level consulted twice, it looks like you have a second
> avenue for dupes. You are performing two array-merge lookups and
> then concatenating the results. Since each array-merge lookup will
> collect data from the whole hierarchy (plus, in your case, an extra
> level), the two sets of results you are concatenating will have many
> elements in common, so concatenating them produces dupes.
This in fact wasn't clear to me, I thought it would restrict the serach
to ubuntu-common.yaml and not extend it.
> In fact, even your 'case' statement is a bit suspect.
Without the case statement, how can I make sure that ubuntu only
receives classes for ubuntu and not e.g. for Windows then?
> With appropriate use of fact interpolation in your hierarchy
> definition, you should be able to reduce [the section you presented
> of] your nodes.pp to just this:
>
> $packages = hiera_array ('packages', [])
> $apacheModules = hiera_array ('apacheModules', [])
> hiera_include ('classes')
> install-packages { $packages: }
> apache24::modules { $apacheModules: }
Works like a charm btw.
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