Create puppet custom fact

1. Ensure (Better use puppet to ensure):

# cat /etc/profile.d/facter.sh
export FACTERLIB=/var/lib/puppet/lib

2. on puppet master server:

$ cat /etc/puppet/modules/gateway/lib/facter/gateway.rb
# gateway.rb

Facter.add(“gateway”) do
setcode do
%x{ip route | grep default | awk ‘{print $3}’}
end
end

3. Ensure puppet client has:

[main]

factpath=$vardir/lib/facter
pluginsync=true

in /etc/puppet/puppet.conf

Then facter | grep gateway would provide gateway IP as a fact.

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