Enabling JMX endpoint on running JVM process

Sometimes during inspection of production problems it can be very useful to enable JMX endpoint on running JVM process.

To do this, perform the follow commands as process user.

jcmd <process-id> ManagementAgent.start jmxremote.host=<host-public-ip> jmxremote.port=<custom-port>  jmxremote.authenticate=no jmxremote.ssl=no

# Example:
jcmd 5950 ManagementAgent.start jmxremote.host=172.11.2.174 jmxremote.port=9332  jmxremote.authenticate=no jmxremote.ssl=no

To enable JMX with flags during process tartups

java -Dcom.sun.management.jmxremote \
  -Dcom.sun.management.jmxremote.port=9010 \
  -Dcom.sun.management.jmxremote.local.only=false \
  -Dcom.sun.management.jmxremote.authenticate=false \
  -Dcom.sun.management.jmxremote.ssl=false \
  -jar app.jar