gistfile1.rb

require 'mcollective'
require 'pp'

include MCollective::RPC

client = rpcclient("rpcutil")
result = client.agent_inventory

File.open("/tmp/mc_debug.txt", "w") do |f|
  result.each do |r|
    f.puts "-----------------"
    begin
      f.puts r[:sender]
      f.puts r[:data][:agent].pretty_inspect
    rescue => e
      f.puts "****************"
      f.puts "Error on node #{r[:sender]}"
      f.puts e
      f.puts r.pretty_inspect
      f.puts "****************"
    end
    f.puts "-----------------"
  end
end

Run as puppet-dashboard