public static Collection<ClusterNodeInfo> getNodesInfo() {
        return CacheFactory.getClusterNodesInfo();
    }
Returns basic information about the current members of the cluster or an empty
collection if not running in a cluster.

@return information about the current members of the cluster or an empty
        collection if not running in a cluster.
xmppserver/src/main/java/org/jivesoftware/openfire/cluster/ClusterManager.java