Monitor Tomcat with OpenView Tomcat SPI

Tomcat is a free, open-source implementation of the Java Servlet and JavaServer Pages technologies that was developed as part of the Jakarta project from the Apache Software Foundation (ASF). Tomcat 5 implements the Servlet 2.3 and JavaServer Page 1.2 specifications from Java Software. It includes many additional features making it a useful platform for developing and deploying web applications and services. For more information regarding the Tomcat Servlet Engine, see the Tomcat website as listed in Table 1.

HP enhances the OSMS Web Services by using HP OpenView Operations Gallery Smart Plug-Ins (OVO SPIs). HP OVO is a distributed client/server software solution designed to provide service-driven event and performance management of business-critical enterprise systems, applications, and services.

The SPI for Tomcat (Tomcat SPI) provides availability, resource, and process monitoring for the Tomcat Servlet Engine from one central management console. This software is provided free to all customers of HP OVO for use under the terms and conditions documented on the download web page. This SPI provides powerful, centralized tools to monitor and manage the operation of multiple installations of Tomcat servers.

Tomcat-SPI provides powerful, centralized tools to monitor and manage the operation of multiple installations of the Tomcat Servlet Engine. The features include the following:

	NOTE: The HP OVO Management server runs on either HP-UX or Windows systems. The examples in this blueprint use HP OVOW.

Figure 16 illustrates the SPIs architecture and OpenView components.

Figure 16 OVOW Architecture

Software Prerequisites and Reference Guides

Before attempting to install the Tomcat SPI, verify that you have a functional HP OVOW 7.5 installation, including an HP OVOW Management Console and the Linux OVO SPI agents for the Tomcat server. In addition, various OVOW patches are required. Table 2 list these patches:

Table 2 Required OVOW Patches

Patch Description	Version	Patch Name	Dependencies
Linux Service Discovery Support patch	A.07.31	OVOW_00198	OVOW_00187
OVO Message and Action Agent patch	A.07.32	OVOW_00213	OVOW_00166
OVO Message and Action Agent patch	A.07.33	OVOW_00234	None

 

The SPI installation and configuration documents can be found on the HP OpenView website at:

http://managementsoftware.hp.com/products/spi/

For information about installing the HP OVOW agent, see the HP OpenView Operations for Windows Installation Guide at:

http://ovweb.external.hp.com/ovnsmdps/pdf/ovow75_install.pdf

Tomcat SPI Components

The Tomcat SPI installs the following default components on the HP OVO Management server and are described in the following sections:

• Tools

• Policies

Tools

Table 3 provides an overview of the Tools group in the Tomcat Servlet Engine SPI (SESPI).

Table 3 SE-SPI Applications of the Tool Group

Servlet Engine SPI	Description
Configure Tomcat Instrumentation	Creates the SESPI directory and configurations files and libraries required by the SPI.
Shutdown Tomcat	Shuts down Tomcat server process.
Start Tomcat	Starts the Tomcat server process.
Start Log Monitor	Stops the log monitor daemons.
Stop Log Monitor	Stops the log monitor daemons.

 

Policies

Table 4 provides an overview of the Policy group in the Tomcat SESPI:

Table 4 SE SPI Applications of the Policy Group

Policy Type	Policy Name	Description	Polling Interval	Threshold
Measurement Threshold	SESPI-Tomcat-CPU Usage	Monitors the CPU usage of the Tomcat server.	5 minutes	90%
Measurement Threshold	SESPI-Tomcat-Mmry Usage	Monitors the memory usage of the Tomcat server.	5 minutes	90%
Open Message Interface	SESPI-Messages	Provides the interface for displaying error messages from the SPI.	-	-
Service Auto Discovery	SESPI-Tomcat Service Discovery	Provides discovery of the Tomcat Servlet engine.	-	-
Scheduled Task	SESPI-Tomcat-Monitor Process	Monitors the Process of the Tomcat server.	1 minute	-