How do I use Apache ZooKeeper as configuration service for Cassandra Cluster?

I haven't yet got a chance to taste Cassandra. But I'm sure some of the below links might help you. https://docs.wso2.org/plugins/servlet/mobile#content/view/31132483 https://docs.wso2.org/plugins/servlet/mobile#content/view/31132487 The above two links explains how to configure zookeeper and Cassandra cluster in two different models. This might not be the one you are looking for but I just thought you would like to read it also. http://code.google.com/p/cages/

Though I have worked with zookeeper, I have not used it as a configuration service. But the following link will give you a fair idea of how to do it. https://www.inkling.com/read/hadoop-definitive-guide-tom-white-3rd/chapter-14/building-applications-with Refer to the Hadoop definitive guide ebook to get the entire sample code given in the link.

I also agree that this is the right way to go: https://docs.wso2.org/display/Cluster/Default+Cassandra+Server+and+External+Zookeeper+Server. You may also find this helpful: http://weblog.leapster.org/archives/295-handling-cassandra-concurrency-issues-using-apache-zookeeper.html

Zookeeper and Cassandra work well together when you use Zookeeper as a locking service. Use the http://code.google.com/p/cages/ library to manage read/writes to Cassandra. http://ria101.wordpress.com/2010/05/12/locking-and-transactions-over-cassandra-using-cages/ The above link will help you with that.

At one of my last companies we actually used zookeeper to store Cassandra configuration. Its probably overkill because zookeepers are quite hard to maintain. I would look at Netflix's Eureka as well depending on what you do with that configuration.However if you still want to use it I would suggest using Curator API rather than  coding up to zookeeper directly. Which is quite tricky.