gistfile1.txt

munin_nodes = Chef::Node.list.map do |name|
  Chef::Node.load(name)
end.select do |node|
  node.recipe_list.include?( "munin-node" )
end

munin_node_list = {}

munin_nodes.each do |node|
  munin_node_list[node.attribute[:fqdn]] = node.attribute[:ipaddress]
end