Appendix C. Connecting with JConsole

C.1. Connect to JDG via JConsole

JConsole is a JMX GUI that allows a user to connect to a JVM, either local or remote, to monitor the JVM, its MBeans, and execute operations.

Add Management User to JBoss Data Grid

Before being able to connect to a remote JBoss Data Grid instance a user will need to be created; to add a user execute the following steps on the remote instance.

  1. Navigate to the bin directory 

    cd $JDG_HOME/bin

  2. Execute the add-user.sh script. 

    ./add-user.sh
  3. Accept the default option of ManagementUser by pressing return.
  4. Accept the default option of ManagementRealm by pressing return.
  5. Enter the desired username. In this example jmxadmin will be used.
  6. Enter and confirm the password.
  7. Accept the default option of no groups by pressing return.
  8. Confirm that the desired user will be added to the ManagementRealm by entering yes.
  9. Enter no as this user will not be used for connections between processes.

  10. The following image shows an example execution run.

    Figure C.1. Execution of add-user.sh

    Example add-user.sh execution on JBoss Data Grid

Binding the Management Interface

By default JBoss Data Grid will start with the management interface binding to 127.0.0.1. In order to connect remotely this interface must be bound to an IP address that is visible by the network. Either of the following options will correct this:

  • Option 1: Runtime - By adjusting the jboss.bind.address.management property on startup a new IP address can be specified. In the following example JBoss Data Grid is starting with this bound to 192.168.122.5: 

    ./standalone.sh ... -Djboss.bind.address.management=192.168.122.5

  • Option 2: Configuration - Adjust the jboss.bind.address.management in the configuration file. This is found in the interfaces subsystem. A snippet of the configuration file, with the IP adjusted to 192.168.122.5, is provided below: 

    <interfaces>
    <interface name="management">
        <inet-address value="${jboss.bind.address.management:192.168.122.5}"/>
    </interface>
    [...]
</interface>

Running JConsole

A jconsole.sh script is provided in the $JDG_HOME/bin directory. Executing this script will launch JConsole.

Connecting to a remote JBoss Data Grid instance using JConsole.

  1. Execute the $JDG_HOME/bin/jconsole.sh script. This will result in the following window appearing:

    Figure C.2. JConsole

    JConsole connecting to remote Data Grid server
  2. Select Remote Process.
  3. Enter service:jmx:remote://$IP:9990 in the text area.
  4. Enter the username and password, created from the add-user.sh script.
  5. Click Connect to initiate the connection.

  6. Once connected ensure that the cache-related nodes may be viewed. The following screenshot shows such a node.

    Figure C.3. JConsole: Showing a Cache

    Viewing cache attributes in JConsole