On Tuesday, December 5, 2017 at 1:39:38 PM UTC+1, Rob Nelson wrote:
>
> Facts are loaded, and distributed from the master, before the catalog
> compilation step. See
> https://docs.puppet.com/facter/3.3/custom_facts.html#external-facts.
> Rather than distributing the json files as a File resource, you could add
> an executable fact to a module and the fact could communicate with the CMDB
> to gather the correct fact information.
>
I'm confused, because I created this on my client only:
/opt/puppetlabs/facter/facts.d/boo.json:
{ "boo": "boo222" }
And added this to me module:
notify { "boo is ${boo}": }
And received:
Notice: boo is boo222
Doesn't that demonstrate that files in facts.d/boo.json are loaded read in
on the agent side? There is no "boo" variable defined anywhere on the
master side.
> However, I think what you really want is an External Node Classifier (
> https://puppet.com/docs/puppet/5.3/nodes_external.html). Similar to a
> function, it runs on the master, but unlike functions it happens before
> catalog compilation, so the hash of key/values it returns can be used
> during catalog compilation. That seems like the perfect fit for your use
> case, except ENCs need to return yaml, not json.
>
>
Thanks, I'll investigate that option.
>
>
> Rob Nelson
> [email protected] <javascript:>
>
> On Tue, Dec 5, 2017 at 5:13 AM, buoyant_puppy <[email protected]
> <javascript:>> wrote:
>
>>
>>
>> On Friday, December 1, 2017 at 5:59:51 PM UTC+1, R.I. Pienaar wrote:
>>>
>>>
>>> All functions like foo() run on the master during compile. It's a multi
>>> phase process, the only way a node can influence the compile time is
>>> using facts.
>>>
>>> You could integrate your CMDB with puppet using a hiera data function
>>> that could exist as a tier in your hierarchy
>>>
>>
>> Thanks, that makes sense now. I'm looking into hiera, but I think I have
>> another alternative as well. If I put my json files in the facter/facts.d
>> directory (on the agent), it will be automatically loaded.
>> The only somewhat minor downside is that facter runs first, so the data
>> it fetches will only be available in the next puppet run.
>>
>> I'm not sure if that's better or worse than the hiera option as I didn't
>> get hiera working yet.
>>
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