Throughout this book we have seen how to set up and use Hazelcast to support our application, but once we start using it we will need to maintain and support our cluster. While we are able to gain great insight into the goings on programmatically, that would take some effort to capture and control all aspects of the cluster. A part of our downloaded archive is Hazelcast's own management center (mancenter-2.6.war) which provides access to cluster and collection information as well as management capabilities. While this is a commercial product, it is currently free to be used with up to a two-node cluster.