Managing Monitors with the Monitor Browser 

Use

The Monitor Browser is available as a predefined report inside Java System Reports and provides runtime control for displaying monitored data. The monitored resources and their attributes are displayed in a tree in the Monitoring Tree screen area of the Monitor Browser.

By choosing a monitor from the tree, you display general information and the monitored data.

Monitoring Tree

The monitoring tree comprises nodes and monitors. A node can be of two types: summary and object. Summary and object nodes do not provide information but are used to group monitors. A monitor is a leaf in the monitoring tree.

The monitoring tree comprises the following summary nodes:

·        Applications

Reports information about the Java applications that are running on the selected system and that have implemented monitoring functionality.

·        Kernel

Reports information about the AS Java managers registered for monitoring.

·        Performance

Reports AS Java performance measurements.

·        Services

Reports information about the state of AS Java services registered for monitoring.

·        System

Displays general information about the system, such as hosts, ports, cluster element names, IP addresses, VM information, and so on.

Color Thresholds

The status of a monitor is graphically displayed as an icon. The list below outlines the color statuses and their meaning:

·        The system displays  with the quick info text OK if data is at the normal level and no attention is needed.

·        The system displays  with the quick info text Warning if the values have moved to the next alert level and some problems may occur soon. Some attention is needed.

·        The system displays  with the quick info text Error if the data values have moved to the error level. Special measures must be taken.

·        The system displays  with the quick info text No information if the monitor is a non-performance one or if the monitor is not working. If the monitor is a performance monitor and it is marked with this icon, it is not working. If it is a non-performance monitor, it always has this icon, so you have to check whether the particular monitor contains data. If there is no data, the monitor is not activated.

You can reconfigure the threshold values if the predefined levels are not suitable for your needs and activate or deactivate monitors that are important for your scenarios.

Prerequisites

You have started the Java System Reports.

Procedure

Starting the Monitor Browser

...

       1.      In the Instance dropdown box, choose an instance.

       2.      In the Cluster Node dropdown box, choose the server process to which you want to add monitors or choose All.

If in the Instance dropdown box you have selected All, in the Cluster Node dropdown box only the All option is available.

       3.      Choose the Reports tab.

       4.      In the Reports dropdown box, choose Monitor Browser.

       5.      To view the monitoring tree, choose the type of view in the Show dropdown boxes.

Displaying and Updating Monitor’s Values

When you select a monitor in the monitoring tree, its description and current value are shown in the Details screen area. You can also view a monitor’s maximum and minimum value and the time when they occurred since the server startup.

If you choose the Update monitor value tab in the Monitoring Tree screen area, the latest monitor’s value appears

Activating and Deactivating Monitors

The concept of active and inactive monitors allows you to activate only the monitors that you need and to deactivate the others, thus improving the overall performance of the system. By default, all monitors, except the monitors active by default are deactivated.

More information: Activating and Deactivating Monitors

Changing the Color Thresholds

The Monitor Browser provides alert monitoring functions based on predefined thresholds. The performance monitors icons acquire a color signaling status

More information: Changing the Color Thresholds.

Configuring a Monitor

You can also fine tune additional monitor settings, such as the monitor’s description, data collection period and so on.

More information: Configuring a Monitor

Using the History Comparison Mode

The History Comparison Mode enables you to compare history data of two or more monitors. The data from the selected monitors is displayed in a chart or table in the Details screen area.

More information: Using the History Comparison Mode.