On Wednesday, April 11, 2018 at 11:28:12 AM UTC-5, Henrik Lindberg wrote:
> On 11/04/18 18:21, jcbollinger wrote: 
> > I'm writing a module for Puppet self-management, or at least I think I 
> > am.  I was surprised to not find very much along those lines on the 
> > Forge, and maybe I should take that as a bad sign, but I want to explore 
> > it at least a little bit.  Maybe I just didn't find the right search 
> > terms -- searching there for "puppet" is not very useful. 
> > 
> > Anyway, I've run into a snag with a threshold issue: how to find the 
> > config file(s) to manage in the first place.  I know where Puppet stores 
> > its config files by default, for various versions of Puppet and for 
> > various operational contexts, but with the existence of the --confdir 
> > option that can be specified on a per-run basis, it is not safe to 
> > assume that the config files that informed the current Puppet run is in 
> > the default location (and those are the ones I want to manage).  In any 
> > case, I'm lazy, so I'd rather get Puppet to tell me what it already 
> > knows than try to recompute it. 
> > 
> > But there does not seem to be a standard fact that communicates this 
> > information (at least, 'puppet facts' does not print one), and I'm not 
> > seeing any appealing ways to extract the necessary information from a 
> > custom fact's runtime context.  I do see at least one nasty, tricksome, 
> > system-dependent way, but I'm more likely to chuck the whole idea than 
> > go there.  Am I missing some clean way to write a custom fact for this 
> > purpose?  Or does someone have an alternative to suggest? 
> > 
> Have you read the documentation regarding $settings ? 
> https://puppet.com/docs/puppet/5.5/lang_facts_and_builtin_vars.html#puppet-master-variables
> - henrik 

Thanks, Henrik, I'm not sure I had read those in detail, since they come 
under the heading of variables set by the master, and the whole problem is 
that the master doesn't have the wanted information.  Still, having now 
read them, I find that the documentation seems to agree with my 
expectations.  In particular:

Note that, other than $environment and $clientnoop, the agent node’s 
> settings are not available in manifests. If you wish to expose them to the 
> master in this version of Puppet, you will have to create a custom fact.

Creating a custom fact to report on the agent's *dynamic* $confdir setting, 
as recommended by those docs, is precisely what I would like to do.  What 
I'm struggling with is how the fact implementation can determine the value 
for such a fact, inasmuch as the value I want is a property of the puppet 
(agent) process on whose behalf Facter is computing facts.


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