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Using keys in nested hiera hash

asked 2013-07-25 19:20:21 -0500

STOIE gravatar image

updated 2013-07-25 19:21:04 -0500

Hi all,

I want to use the keys from a nested hiera hash as values for a create_resources loop in my manifest.

Is this possible and if so, how do I obtain them???

My Hiera:

    fqdn: ""
    alias: ""
    fqdn: ""
    alias: ""
    fqdn: ""
    alias: ""

Lets say I am after the values (2.2 and 2.4):

And my manifest looks something like:

$apachehash = hiera('apache')
create_resources ( apache::apache_swloop, $apachehash )

define apache_swloop(...) {

        class { "apache::apache_sw ...
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answered 2013-07-25 23:37:05 -0500

STOIE gravatar image

I actually believe I may have found the answer.

It appears like you use the "name" var for the key value in your define loop.


$apachehashdefaults = {
        $apachehash     => '2.2',

$apachehash = hiera('apache')
create_resources ( apache::swloop, $apachehash, $apachehashdefaults )

define swloop() {

        class { "apache::sw":
                apaversion              => $name,


In this $name = "2.2" and "2.4"... I believe, yet to actually test it...

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answered 2013-07-25 23:12:17 -0500

GregLarkin gravatar image

Give something like this a try:

  $apachehash = hiera_hash("apache")
  create_resources("apache::apache_sw", $apachehash)

You'll have to make sure that within your apache::apache_sw resource, you can pull apart the contents of $apachehash to get at the bits that you want. Since many of your keys are dynamically-named, I think it might be harder to do that.

You might look at restructuring your YAML file so you can always pull values out of the hash based on well-defined key names. If you get stuck with that, please post back here for further troubleshooting.

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Asked: 2013-07-25 19:20:21 -0500

Seen: 2,712 times

Last updated: Jul 25 '13