The JMX subsystem registers a service with the Remoting endpoint so that remote access to JMX can be obtained over the exposed Remoting connector.
This is switched on by default in standalone mode and accessible over port 9990 but in domain mode is switched off so needs to be enabled - in domain mode the port will be the port of the Remoting connector for the WildFly 8 instance to be monitored.
To use the connector you can access it in the standard way using a service:jmx URL:
import javax.management.MBeanServerConnection;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
public class JMXExample {
public static void main(String[] args) throws Exception {
//Get a connection to the WildFly 8 MBean server on localhost
String host = "localhost";
int port = 9990; // management-web port
String urlString =
System.getProperty("jmx.service.url","service:jmx:http-remoting-jmx://" + host + ":" + port);
JMXServiceURL serviceURL = new JMXServiceURL(urlString);
JMXConnector jmxConnector = JMXConnectorFactory.connect(serviceURL, null);
MBeanServerConnection connection = jmxConnector.getMBeanServerConnection();
//Invoke on the WildFly 8 MBean server
int count = connection.getMBeanCount();
System.out.println(count);
jmxConnector.close();
}
}
You also need to set your classpath when running the above example. The following script covers Linux. If your environment is much different, paste your script when you have it working.
!/bin/bash
# specify your WildFly 8 folder
export YOUR_JBOSS_HOME=~/WildFly8
java -classpath $YOUR_JBOSS_HOME/bin/client/jboss-client.jar:./ JMXExample
You can also connect using jconsole.
If using jconsole use the jconsole.sh and jconsole.bat scripts included in the /bin directory of the WildFly 8 distribution as these set the classpath as required to connect over Remoting.
In addition to the standard JVM MBeans, the WildFly 8 MBean server contains the following MBeans:
|
JMX ObjectName
|
Description
|
|
jboss.msc:type=container,name=jboss-as
|
Exposes management operations on the JBoss Modular Service Container, which is the dependency injection framework at the heart of WildFly 8. It is useful for debugging dependency problems, for example if you are integrating your own subsystems, as it exposes operations to dump all services and their current states
|
|
jboss.naming:type=JNDIView
|
Shows what is bound in JNDI
|
|
jboss.modules:type=ModuleLoader,name=*
|
This collection of MBeans exposes management operations on JBoss Modules classloading layer. It is useful for debugging dependency problems arising from missing module dependencies
|
Audit logging
Audit logging for the JMX MBean server managed by the JMX subsystem. The resource is at /subsystem=jmx/configuration=audit-log and its attributes are similar to the ones mentioned for /core-service=management/access=audit/logger=audit-log in Audit logging.
|
Attribute
|
Description
|
|
enabled
|
true to enable logging of the JMX operations
|
|
log-boot
|
true to log the JMX operations when booting the server, false otherwise
|
|
log-read-only
|
If true all operations will be audit logged, if false only operations that change the model will be logged
|
Then which handlers are used to log the management operations are configured as handler=* children of the logger. These handlers and their formatters are defined in the global /core-service=management/access=audit section mentioned in Audit logging.