Monitoring with JMX

• Add the following system properties to enable JMX agent:

  • -Dcom.sun.management.jmxremote

  • -Dcom.sun.management.jmxremote.port=\_portNo\_ (to specify JMX port) (optional)

  • -Dcom.sun.management.jmxremote.authenticate=false (to disable JMX auth) (optional)

• Enable Hazelcast property hazelcast.jmx (refer to System Property);

  • using Hazelcast configuration (API, XML, Spring)

  • or set system property -Dhazelcast.jmx=true

• Use jconsole, jvisualvm (with mbean plugin) or another JMX compliant monitoring tool.

Following attributes can be monitored:

• Cluster

  • configuration

  • group name

  • count of members and their addresses (host:port)

  • operations: cluster restart, shutdown

• Member

  • inet address

  • port

• Statistics

  • count of instances

  • number of instances created/destroyed since startup

  • maximum instances created/destroyed per second

• AtomicLong

  • name

  • actual value

  • operations: add, set, compareAndSet, reset

• List, Set

  • name

  • size

  • items (as strings)

  • operations: clear, reset statistics

• Map

  • name

  • size

  • operations: clear

• Queue

  • name

  • size

  • received and served items

  • operations: clear, reset statistics

• Topic

  • name

  • number of messages dispatched since creation, in last second

  • maximum messages dispatched per second