If you are using the VoltDB Community Edition, you cannot use the Enterprise Manager to monitor your cluster. However, you can still get statistics on database activity and the performance of your cluster nodes.
The VoltDB system procedures provide valuable information about the status of the database. In particular, the @SystemInformation and @Statistics system procedures return information about the cluster configuration and database activity, respectively. (See the Appendix on system procedures in the Using VoltDB manual for details.)
Even without the Enterprise Manager, it is possible to use Ganglia for a consolidated view of the performance
characteristics of your VoltDB database nodes. Ganglia can report on CPU usage, memory, disk storage, and other system
statistics. See the Ganglia website (
http://ganglia.sourceforge.net/) for more information.