[Puppet Users] setting up default param value to all instances of a specific resource type

There's no way to have the defaults in the top scope if you put them in a
module. Module implies class, which implies a scope under top scope.

Site.pp would be the appropriate place, but keep in mind there is no way to
"enforce" these defaults.

There's a fairly common practice these days of setting resource defaults in
a class when you have multiple resources with the same parameters. I
believe setting any defaults at a lower scope will cause puppet to ignore
the ones set at the higher scope (not to merge them), so it's likely
there's not a good solution to what you're trying to do short of a commit
hook that denies any defaults outside site.pp.

If you need a declaration to apply globally, then it must, perforce, appear
at top scope. Moreover, it is safest and clearest for it to appear before
other declarations, such as node blocks.

Although it is possible and valid to make top-scope declarations in any
manifest, putting them outside the direct purview of site.pp produces
issues revolving around when and even whether those declarations are
parsed. So don't do that.

What you can do, however, is put such declarations in a separate file, and
'import' that file into site.pp. That's a common practice for node blocks,
but they are just common a special case of top-scope declarations. The
'import' function doesn't have many good uses any more, but this is exactly
the sort of thing it's good and appropriate for.


John