Hi,
A bit of background, I'm trying to move from node inheritance to hiera.
With node inheritance I could declare defined types at several levels, for
example, say for all of preproduction I'd like a yum repository
*manifests/pre-prod.pp*
class preprod {
yumrepo { 'preprod-repo': ... }
}
Then add other repos in various sub classes where other specialized
yumrepo(s) are declared
*manifests/qa.pp*
class qa inherits preprod {
yumrepo { 'qa': ... }
}
*manifests/dev.pp*
class dev inherits preprod {
yumrepo {'dev': ... }
}
I'm having a hard time getting this to map to hiera cleanly. I'd like to
have the data in the hierarchy something like this
*preprod.yaml*
yumrepo::name: preprod-repo
...
*qa.yaml*
yumrepo::name: qa-repo
...
My initial thought was to use hiera_include('classes'), but that doesn't
work for defined types. What folks on superuser.com have
suggested<http://serverfault.com/questions/549720/hiera-include-equivalent-for-resource-types/549727?noredirect=1#549727>is
to define a wrapper class for *each* declaration of a defined type.
Something like
class preprod_repo {
yumrepo { 'preprod-repo': ... }
}
class qa_repo {
yumrepo { 'qa-repo': ... }
}
Then in the yaml
*preprod.yaml*
classes:
- preprod_repo
...
*qa.yaml*
classes:
- qa_repo
...
I really don't want to define a class for every single type instantiation.
What I'd prefer would be a single class that could capture a merged hash
from all the yaml files and write out all the type declarations, but I'm
having trouble with the implementation. From the yaml side, I've got what I
want, something like this
*preprod.yaml*
classes:
- yumrepo_hiera
yumrepo_hiera: {
'preprod_repo' : {
# attributes for preprod yum repo
}
}
*qa.yaml*
classes:
- yumrepo_hiera
yumrepo_hiera: {
'qa_repo' : {
# attributes for qa yum repo
}
}
Now I'm passing an aggregate data object with all the data needed to the
yumrepo_hieara class. Problem is how to write out all those type
declarations. Since there's no looping in RDL. I know it's deprecated, but
the Ruby DSL seems to be my best bet, yet I can't get the hash from hiera
passed in.., I'm getting this error when I run the agent
undefined method `merge' for :yumrepo_hiera:Symbol
Here's what I've got so far, bear in mind I know nothing of Ruby, but
hopefully you can get the idea
hostclass :yumrepo_hiera, :yumrepo_hiera do
@yumrepo_hiera.each do |name, repo|
yumrepo( :name,
repo[:descr],
# other parameters to yumrepo type...
)
end
end
Can someone help me get off the ground with this Ruby DSL, or show me a
better way in general, one where I don't have to write a class per each
node declaration?
thanks,
-nathan
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