If you run into issues connecting via jconsole to the JmxInterface port from a remote machine, it may be the JVM option '-Djava.rmi.server.hostname'. This may need to be set to a particular interface like '-Djava.rmi.server.hostname=$IP' (where $IP is the ip address of the interface you can reach from the remote machine). Java defaults to the ip address of "localhost" which is mostly likely not what you want.
- You may also run into issues connecting to the JMX interface (even locally) because by default JMX binds to IPv6 if it's available (netstat -nap | grep 8080). This case is also solved by passing '-Djava.rmi.server.hostname=$IP' explicitly as a JVM option. This will prompt JMX to bind to the given IPv4 IP address so that nodetool can access it.