Just to make sure .. simplified without perl ..
[root@uc-01 ~]# cat
/opt/wdts/puppet/production/modules/puppet/lib/facter/last_interface.rb
Facter.add('last_interface') do
setcode do
name = Facter::Core::Execution.exec('ip -o l | grep -v loopback | sed
\'s/://g\' | cut -d\' \' -f2 | sort -n | tail -1')
Facter.value("ipaddress_"+name)
end
end
[root@uc-01 ~]# ip -o l
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN \
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state
UP qlen 1000\ link/ether 08:00:27:b6:de:19 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state
UP qlen 1000\ link/ether 08:00:27:1d:eb:14 brd ff:ff:ff:ff:ff:ff
4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state
UP qlen 1000\ link/ether 08:00:27:90:be:4c brd ff:ff:ff:ff:ff:ff
[root@uc-01 ~]# facter | grep last_interface
last_interface => 10.0.2.15
[root@uc-01 ~]# facter last_interface
10.200.111.100
[root@uc-01 ~]#
On Mon, Feb 9, 2015 at 10:34 AM, John D'Ausilio <jdausi...@gmail.com> wrote:
> 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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> >
> https://groups.google.com/d/msgid/puppet-users/f0aa94a6-aa55-4420-97f0-1f82c55c6207%40googlegroups.com
> .
> >
> > For more options, visit https://groups.google.com/d/optout.
>
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