This is a collectd plugin for HAProxy (tested and working as of HAProxy 1.8).
It uses the UNIX Socket commands to monitor stats from the show info, show stat and show resolvers commands. This allows monitoring of haproxy status as well as frontends, backends, servers and resolvers configured.
This plugin was forked and modified from Signalfx's haproxy plugin in order to output non signalfx specific names and output resolver/nameserver information.
This code is open source software licensed under the MIT License.