ZooKeeper - need Java VM on every znode, no service discovery, etc ...
Consul - one binary, and other https://www.consul.io/intro/ and https://www.consul.io/intro/vs/zookeeper.html

How about add support Consul as drop-in replacement ZooKeeper?