Java Monitoring

Java Monitoring

Java is today the dominant platform for server-based applications. With the widespread adoption of J2EE application servers, Java provides an open standards based platform to build upon. Java Monitoring is a process used to monitor application servers based on the Java and Java 2 Enterprise Edition (J2EE) platforms. Java Monitoring involves using the Java Management Extensions (JMX) to extract performance data of the underlying application server.
Java Monitoring is process of monitoring the performance, memory usage, execution time, transaction details for Java/J2EE application servers. Java Monitoring can monitor Heap consumption by underlying JVM, as well as involves monitoring for Java Server Pages (JSP), Servlets, Enterprise JavaBeans (EJB), Java Message Service (JMS), Java Transaction API (JTA) and Java Database Connectivity (JDBC).



Java Monitoring with AppPerfect

AppPerfect offers Java Monitoring solution in the form of AppPerfect Agentless Monitor. AppPerfect's Java Monitoring is the ideal solution to monitor your Java application server resources. AppPerfect's Java Monitoring is found to be most affordable, cost effective, efficient, reliable and accurate solution by its customers. Regular agents impose a substantial overhead on your server resources in terms of CPU and memory. By contrast, AppPerfect's Java Monitoring solution implements Agentless Architecture and uses existing Java Management Extension (JMX) services to extract performance and memory information. Java Monitoring with AppPerfect is extremely lightweight and adds negligible overhead to target system while monitoring. AppPerfect can monitor Tomcat, JBoss, JRun, SunOne, Oracle, Jetty, WebLogic, Websphere application servers for performance and robustness.

Following steps will explain how you can configure AppPerfect for Java Monitoring :

  1. Once you are logged into the Monitor Server you can see the Web-UI from which you can access all the features of the Monitor Server. Click the Monitors link from the top navigation bar. This will take you to Monitors tab. Click on Add button to Add a New Server Monitor.
  2. Next Step is to define the Java Monitor. Provide the IP Address or Host Name of the target java server which needs to be monitored.
  3. Select the Java/J2EE Servers Monitor Type from the drop down. AppPerfect can monitor Tomcat, JBoss, JRun, SunOne, Oracle, Jetty, WebLogic, Websphere application servers for performance and robustness. Select the server which suits your requirement. AppPerfect uses management services provided by application servers to fetch monitoring data. For enabling monitoring services on application server refer to Java/J2EE Monitor chapter.
  4. Specify a meaningful identifier for the monitor which will help identify the monitor in future.
  5. Specify the Data Fetch Interval which represents the time interval for which application should wait before fetching the monitoring data from the device. Monitoring Data will be fetched after every specified fetch interval. The smaller the time interval, the more granular the data. However, smaller time intervals also result in a much larger data set.
  6. You can specify if the monitor should be Active as soon as its added or should it be in suspended state.
  7. Next Option is to provide application server specific configuration settings. Provide the user credentials and JMX service port configured while configuring application server for monitoring. Once you are done providing the application server settings, click on Validate Connection button to confirm that server is accessible.

    Java Monitoring : Add Monitor
  8. Next Step is to Select the Attributes to monitor. Java Monitoring allows you to monitor crucial parameters such as JSP Load Time, JSP Processing Time, Servlet Load Time, Servlet Processing time, Heap Memory used, Number of requests, Threads information, Memory consumption, Connections information, Transaction Rate, Execution time etc. Select the parameters you need to monitor from the list of attributes shown. For details on supported attributes refer to Java/J2EE Monitor chapter.

    Java Monitoring : Select Attributes
  9. Next step shows the Attribute details of all the selected attributes in the previous step. You can customize the display labels for each of the attributes here. You can change the label for time from milliseconds to microseconds.

    Java Monitoring : Attribute Details
  10. Next step shows the Attribute Data coversion where you can convert the attribute value to required unit. You can configure the operation which should be performed on the attribute value to create the final output value. For example by default the JSP Load Time is in milliseconds. In case you need to convert the values to micro seconds, you can set a operator to convert the value from milli seconds to micro seconds. In this case it will be a Multiply operation by 1000.

    Java Monitoring : Attribute Data Conversion
  11. Next step shows the Defining Rules view. This view will provide a list of all numeric attributes. You can select the attributes for which you want to add a rule. A rule is defined as a conditional or threshold value which when exceeds, a notification would be sent. In a typical work flow the monitors extract data from the monitored device and send it to the rules engine. The rules engine evaluates the data to ensure no rule is violated and then sends it to the view manager. However, if a rule is violated, a message is immediately sent to the notification server to alert the user about the rule violation.Rules can be defined at a later stage as well. For details on how you can add/edit rules for the monitor, please see the Rules chapter.

    Java Monitoring : Defining Rules
  12. Next step shows the Data Management settings. AppPerfect generates vast quantity of data. Effective data management is crucial to ensure a properly functioning monitoring system.When a device is monitored at a regular time interval, AppPerfect requests the device for values of the device properties that it is monitoring. This data is processed and stored by AppPerfect in a java. As the number of monitors defined in the system increase, so does the amount of data. If you have several dozen or hundred monitors, the data can accumulate very quickly. To ensure smooth functioning of the system effective data management is important. In this view, you can set the archiving/purging policies as well as set the frequency with which data should be collected from the monitored devices. For details on Data Management settings, please see the Managing Data chapter.

    Java Monitoring : Data Management
  13. Next step shows the Security & Notification settings. When a rule is violated a notification is sent out to all the concerned users that a particular event has occurred and needs to be dealt with. This process is called notification. AppPerfect provides five modes of notification. They are Email notification, SMS notification, Custom notification, Log notification, Java notification, SNMP Trap notification. For details on each of the supported notification , please see the Notification chapter. In this view you can configure the type of notification which should be sent on Rule violation, Users/Groups to whom notification should be sent and also the subject and details on the notification message.

    Java Monitoring : Notifications
  14. Click on finish button. We are done adding the monitor for Java Monitoring. You will find the newly added monitor on left hand side Monitor tree. Select the Monitor and on right hand side you can view the detailed results for each of the attributes being monitored for the target java application server.

    Java Monitoring Results
Conclusion :

Java Monitoring helps you monitor java application servers for performance and robustness. Java Monitoring allows you to monitor crucial parameters such as JSP Load Time, JSP Processing Time, Servlet Load Time, Servlet Processing time, Heap Memory used, Number of requests, Threads information, Memory consumption, Connections information, Transaction Rate, Execution time etc.
AppPerfect's Java Monitoring can monitor Tomcat, JBoss, JRun, SunOne, Oracle, Jetty, WebLogic, Websphere application servers for performance and robustness. AppPerfect Agentless Monitor is found to be most affordable, cost effective, efficient, reliable and accurate Monitoring solution by its customers. In case you have not yet tried AppPerfect Agentless Monitor, Download Now and give it a try today.