This property controls whether the JMX port on the vCenter Hyperic server Java virtual machine is open or closed.

The primary reason to open the port is to enable monitoring of the vCenter Hyperic server's internal ActiveMQ Server. With the port closed, a vCenter Hyperic agent on the same platform as the vCenter Hyperic server will discover ActiveMQ, but cannot obtain ActiveMQ metrics.

When JMX is enabled, the property that defines the JMX port is server.jms.jmxport.