![]() Project GlassFish supports the management capabilities through a combination of the command-line interface (CLI) called asadmin, the Administration Console, and programmatic Application Server Management Extensions (AMX) API. This article explains the management capabilities in Project GlassFish for Web services that are based on the Java API for XML Web Services (JAX-WS) 2.0 according to JSR 224 or JSR 109 and JAX-RPC 1.1. ![]() In Project GlassFish, Web services are first-class objects that can easily be monitored and managed. One recent exception is Project GlassFish, an open-source, application-server implementation of Java EE 5. In general, however, tools have not taken advantage of those technologies to enhance the management and monitoring tasks for Web services. Along with other technologies, such as Java Management Extensions (JMX), J2EE Management offers a vendor-neutral way for managing and monitoring resourcesin particular, Web servicesthat reside on J2EE servers. You can also configure the service to log specific attributes of the MBeans used to gather data, using the -addproperty option with the subcommand.One of the new technologies on the Java Platform, Enterprise Edition (J2EE platform) 1.4 is J2EE Management (JSR 77), a standard for disseminating and accessing management information, operations, and attributes for J2EE components. You can use this command to enable the service and configure the interval frequency for the statistics to be logged: asadmin set-monitoring-configuration -logfrequency 60 -enabled true This service must be enabled first using the asadmin set-monitoring-configuration subcommand first. These metrics are logged together in a single log message as a series of key-value pairs prefixed by the string PAYARA-MONITORING, making it easier to filter these statistics and report them in a simpler way. Payara Server comes with a JMX Monitoring Service that can be used to log monitoring statistics gathered from MBeans to the server's log output. Payara Server doesn't come with a bundled application that allows writing custom event listeners, however, there are some good alternatives that can help users improve their diagnostics in the same manner:ฤก. The purpose of the Monitoring Scripting Client is allowing users of the Oracle GlassFish Server to have more control over the monitoring statistics of the server and to write custom event listeners that react to specific conditions that trigger these events. The Monitoring Scripting Client comes packaged as a web application that uses Comet support to run the scripts written out by users. The server also comes with a set of scripts samples that cover many use cases for monitoring common statistics. When these probes are enabled, clients can listen to all events that are provided for the standard GlassFish Server monitoring (JMX). It adapts to specific diagnostic needs that are useful to have in production environments. This feature can help identify performance bottlenecks, predict server failures and identify their root causes to avoid future issues. These probes have minimal overhead and impact on the performance of a production environment when enabled. Observe how enterprise application behave in a general manner. ![]() Follow the state of internal components and services.Track application performance characteristics.With the Monitoring Scripting Client, administrators and other operations staff can write JavaScript templates that enable monitoring probes to execute the following tasks: ![]() Monitoring Scripting Client - what is it? In the fourth part of our continuing series on alternatives for commercial Oracle GlassFish features we are looking at the JMX Monitoring Service & the Payara HealthCheck Service as possible replacements for Oracle's Monitoring Scripting Client.
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