Try this (works for me):
class custom::mysql::grants {
$grantoptions = hiera_hash('mysql::grants’, false)
if $grantoptions {
create_resources('database_grant', $grantoptions)
}
}
http://docs.puppetlabs.com/references/latest/function.html#hierahash
… a default argument in the second position, providing a hash to be returned
in the absence of any matches for the key argument
By using “false” as a default, you will eliminate the error you are getting and
the resources will be creates only if they are defined in Hiera.
Share & Enjoy !
On Aug 23, 2013, at 11:47 AM, Chris McDermott wrote:
> Hi folks,
>
> Is there a way to test the result of a hiera_hash() lookup in a manifest? I
> am trying to use hiera to do most of my configuration, like this for example:
>
> mysql::grants:
> 'user1@localhost':
> privileges:
> - select_priv
> 'user2@localhost':
> privileges:
> - select_priv
> - insert_priv
> - lock_tables_priv
>
> I have a wrapper class that then does this:
>
> class custom::mysql::grants {
> $grantoptions = hiera_hash('mysql::grants')
> create_resources('database_grant', $grantoptions)
> }
>
> That works fine as long as I include the custom::mysql::grants class. But
> right now I can only include that class on nodes where I define explicit
> grants. If I don't have the mysql::grants hash defined for that node in
> hiera, puppet complains:
>
> Error: Could not retrieve catalog from remote server: Error 400 on SERVER:
> Could not find data item mysql::grants in any Hiera data file and no default
> supplied at /path/to/custom/manifests/mysql.pp:34
>
> I tried testing the $grantoptions variable after calling hiera_hash() but
> that's too late - it's the hiera_hash function itself that produces that
> error. I would love to be able to just include this wrapper class globally,
> and then have it only run create_resources if it actually finds a usable hash
> for that node, so I don't have as many includes on each individual node.
>
> Any thoughts?
>
> Thanks!
>
> Chris
>
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