JMX端口动态分配

Question

I have 16 Java processes with the same main method and arguments running on one machine. I wish to monitor these remotely thru JConsole.

Hard coding port numbers like -Dcom.sun.management.jmxremote.port=5000 won't work because these processes are using same configuration and they can't work with same port.

Is it possible for the JVM to select a different port dynamically for each of the 16 processes?

Answer 1

Using RMI Connector might be the way as you may specify URL of your agent.

In case you'd need it, you may create RMI registry programatically using:

java.rmi.registry.LocateRegistry.createRegistry(port);

You may find following unrelated sample useful: Connecting Through Firewall Using JMX

Answer 2

I don't think the oracle jvm supports anything like this. the only thing that might work is using the port "0", which enables "dynamic" port selection in some rmi related stuff.