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Monitor Instances with JMX

Monitoring with JConsole

All of the containers in the fabric have JMX enabled by default. To monitor a Fabric Container with JConsole, proceed as follows:

  1. In the local container, use the fabric:container-list console command to obtain the JMX connection URLs for all of the containers, as follows:

    karaf@root> fabric:container-list -v
    [id]                 [version] [alive] [profiles]                      [ssh url]                     
     [jmx url]                                                                                  [provision status]
    mqserver1            1.0       true    mq                              ec2-184-72-214-117.compute-1.amazonaws.com:8101
     service:jmx:rmi://ec2-184-72-214-117.compute-1.amazonaws.com:44444/jndi/rmi://ec2-184-72-214-117.compute-1.amazonaws.com:1099/karaf-mqserver1 success
    mqserver2            1.0       true    mq                              ec2-50-19-15-210.compute-1.amazonaws.com:8101
     service:jmx:rmi://ec2-50-19-15-210.compute-1.amazonaws.com:44444/jndi/rmi://ec2-50-19-15-210.compute-1.amazonaws.com:1099/karaf-mqserver2 success
    registry             1.0       true    fabric, fabric-ensemble-0000-1  ec2-50-19-18-91.compute-1.amazonaws.com:8101
     service:jmx:rmi://ec2-50-19-18-91.compute-1.amazonaws.com:44444/jndi/rmi://ec2-50-19-18-91.compute-1.amazonaws.com:1099/karaf-registry success
    Error executing command: java.lang.RuntimeException: org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /fabric/registry/containers/config/root/publichostname
  2. In an O/S command prompt, enter the following command to start up JConsole:

    > jconsole
  3. Copy one of the (rather long) JMX connection URLs from step 1 and paste it into the Remote Console text field of the JConsole: New Connection dialog. In the Username field, type admin; and in the Password field, type admin. Click Connect.

  4. JConsole now establishes a JMX connection to the cloud container. Click on the MBeans tab to explore the status of applications running in the container.

EC2 firewall configuration

Fabric automatically configures the EC2 firewall to let JMX connections through. It should not be necessary to make any modifications to the firewall configuration.

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