Hiera and precedence

[Peter Berghold]

I'm having a revertment to my noob days with respect to how hiera works.  (Version 3 for now) 

If I have the hierarchy of 

- common

- nodes/"%{fqdn}"

- datacenter/"%{fdatacenter}"

if in common.yaml I have "module::parms::server: server1" and in nodes/myclient.yaml I have "module::parms::server: server2" and in datacenter/NYCA.yaml (and the host presents NYCA as its datacenter) I have "module::parms::server: server3" which value will be presented for host myclient? 

I could have sworn I read the lower down the list of hierarchy a value was it would override the one above it. I just read this morning that hiera stops at the first value it finds which is a bit of a problem for what I'm trying to accomplish.

--

Peter L. Berghold                       Salty....@gmail.com

http://science-fiction.berghold.net

[Dan White]

I think you have it bass-ackwards 

https://puppet.com/docs/puppet/5.0/hiera_hierarchy.html

"Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us."

Bill Waterson (Calvin & Hobbes)

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[Henrik Lindberg]

On 2019-01-17 18:40, Peter Berghold wrote:
> I'm having a revertment to my noob days with respect to how hiera
> works.  (Version 3 for now)
>
> If I have the hierarchy of
>
> - common
> - nodes/"%{fqdn}"
> - datacenter/"%{fdatacenter}"
>
> if in common.yaml I have "module::parms::server: server1" and in
> nodes/myclient.yaml I have "module::parms::server: server2" and in
> datacenter/NYCA.yaml (and the host presents NYCA as its datacenter) I
> have "module::parms::server: server3" which value will be presented for
> host myclient?
>
> I could have sworn I read the lower down the list of hierarchy a value
> was it would override the one above it. I just read this morning that
> hiera stops at the first value it finds which is a bit of a problem for
> what I'm trying to accomplish.
>

Hiera has always gone from top to bottom in the list in hiera.yaml
and it returns the first found.

You want "common" (the default) to be last in the list.

- henrik

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