Point taken on perl overkill .. trying to get something working and
copy/pasted someone else's solution ;)
In any case, I expect this to get all of the non-localhost interface
names, sort them, and return me the IP address of the last in the
list.
When run from commandline by name it works great. When I run facter
alone (show all facts) or Puppet runs it it appears to instead give me
the first one in the list.
On Mon, Feb 9, 2015 at 9:25 AM, jcbollinger <john.bollin...@stjude.org> wrote:
>
>
> On Sunday, February 8, 2015 at 3:47:58 PM UTC-6, John D'Ausilio wrote:
>>
>> So I have a custom fact which works fine from the commandline: facter
>> last_interface (it returns the ip address of the last of a sorted list of
>> interface names)
>>
>> If I just run facter without parameters, the value in last_interface is
>> incorrect!
>>
>> Is there something different between the environment when running facter
>> without args and the environment when asking for a specific fact?
>>
>> Facter.add('last_interface') do
>> setcode do
>> name = Facter::Core::Execution.exec('ip -o l | grep -v loopback | perl
>> -lane\'$F[1]=~s/://g;print $F[1]\' | sort -n | tail -1')
>> Facter.value("ipaddress_"+name)
>> end
>> end
>>
>
>
> No. The environment provided to Facter (or to any command) is determined by
> how you launch the command. The arguments to the command cannot affect its
> environment.
>
> We might be able to offer better insight if you explained what fact value
> you expect, and why, and what you actually see in the incorrect case.
>
> I will say right now, however, that it is awfully strange and heavyweight to
> use Perl as part of determining the fact value when the fact computation is
> already running in Ruby. Even if you want to do the whole job with an
> external pipeline, 'sed' would be a lighter-weight (and simple-syntax)
> choice. Nevertheless, I don't see how that could contribute to differing
> results.
>
>
> John
>
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