Collectd plugin for Zookeeper based off Zookeeper monitoring script https://svn.apache.org/repos/asf/zookeeper/trunk/src/contrib/monitoring/check_zookeeper.py
Requires Zookeeper 3.4.0 or greater in order to use 'mntr' four letter word command (http://zookeeper.apache.org/doc/trunk/zookeeperAdmin.html#sc_zkCommands)
TODO: if support for earlier version needed add 'srvr' command, available in >=3.3.0, or 'stat' (fetches extra uneeded data but available pre-3.3)