-frontends = search(:node, "recipes:web\\:\\:frontend").reject { |n| Time.now - Time.at(n[:ohai_time]) > expiry_time }.map(&:name).sort
-backends = search(:node, "recipes:web\\:\\:backend").reject { |n| Time.now - Time.at(n[:ohai_time]) > expiry_time }.map(&:name).sort
-tilecaches = search(:node, "roles:tilecache").reject { |n| Time.now - Time.at(n[:ohai_time]) > expiry_time }.sort_by(&:name).map do |n|