In the Central list, select Monitoring
- Click the New Monitoring Server Group icon.The Monitoring Server / Monitor wizard appears.
Select Monitoring Server Group and click
Enter a name and description for the
Monitor Server Group.
Check App Servers and then click
The Hosts/Device Agents screen appears.
Add one or more servers where a Tomcat server resides using hostname or IP Address.
Select Tomcat, then enter the JMX port
number, the user name, and password. The user name and password are not always required.
Check with your network administrator. Note that Tomcat does not have a default port. It
is chosen when you set up the JMX Remote Agent.
Click the Test Connection button to test
the connection. If the connection is successful, the connection success is indicated in
green text. If the connection fails, you will see an error message in red text.
- Click Next and review the Monitor Server setup.
Check the "Create a new Monitor for this
Monitor Server" box and click Finish.
Enter a name for the Monitor and an
optional description, then click Next.Now, choose which statistics to monitor. For each
statistic, you can choose a "sample rate" that determines how often that statistic will be
- In addition to the standard
statistics that are offered (for example, "JVM Heap Size"), you can track the value of
any JMX MBean attribute. For example, to track the current number of sessions in the
/mywebapp, check the "JMX Attribute" box, and in the "Arguments" column enter:
Catalina:type=Manager, path=/mywebapp,host=localhost:sessionCounterYou can use the "Add Custom Object" button to add as many JMX MBean attributes as you like. Some more examples:
- To track the total amount of time spent processing HTTP requests since Tomcat started, in the "Arguments" column enter:
- To track the current number of threads in the HTTP thread pool, in the "Arguments" column enter:
Catalina:type=ThreadPool, name=http-8080:currentThreadCountWhen you are finished, click Next.
- In addition to the standard statistics that are offered (for example, "JVM Heap Size"), you can track the value of any JMX MBean attribute. For example, to track the current number of sessions in the web application
- Review the information to be sure it is correct, then click Finish.