hiera_hash in parameter lookup

[Corey Osman]

I have the following code which uses the auto binding feature to lookup a hiera value. This is nothing new though. The problem I see is that there is no way to tell puppet to use hiera_hash() for the install_options.

class sql2014(
Hash $install_options = {},
String $instance_name = 'MSSQLSERVER',
Hash $ssdt_install_options = {}
)

Now I could alternatively specify hiera_hash but then I create a race condition unless I change the key name:

class sql2014(
Hash $install_options = hiera_hash(’sql2014::install_options’, {}),
String $instance_name = 'MSSQLSERVER',
Hash $ssdt_install_options = {}
)

Please tell me that when using puppet 4 data types, puppet will automatically switch hiera methods based on type to use the hiera hash / array binding method instead of the normal hiera method.

If not, is this even possible?


Corey

[Rob Nelson]

Corey, take a look at the lookup_options to specify merge behavior with APL. Prior to this, APL would not do hash lookups with any merge behavior. This should change that: https://docs.puppetlabs.com/puppet/latest/reference/lookup_quick.html#specifying-merge-behavior and https://docs.puppetlabs.com/puppet/latest/reference/function.html#merge-behaviors for the valid options.

Rob Nelson
rnel...@gmail.com

Corey




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[Corey Osman]

1.  Can this be done in PE 3.8?

2. Its not clear where the lookup_options need to go.   Does the lookup_options go in hiera.yaml?

https://docs.puppetlabs.com/puppet/latest/reference/lookup_quick.html#setting-lookupoptions-in-data

lookup_options: ntp::servers: merge: native? (I don't need deep merge)

Very cool stuff, I did not know about this.   But this would be exactly what I want. 

Corey

[Rob Nelson]

It started in puppet 4, I believe 4.3. The lookup options go anywhere in your hiera data, common.yaml or somewhere more specific. It will merge, so you can add the ntp::servers key in common and sql2014::install_options in a fqdn/role type tier if need be. 

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Rob Nelson
rnel...@gmail.com