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EMS Hardware Monitors User's Guide
Manufacturing Part Number: B6191-90028
September 2001
© Copyright 2001 Hewlett-Packard Company
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Legal Notices The information contained in this document is subject to change without notice. Hewlett-Packard makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or direct, indirect, special, incidental or consequential damages in connection with the furnishing, performance, or use of this material. Copyright © 20
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Printing History September 2001 Edition 1 The printing date and part number indicate the current edition. The printing date changes when a new edition is printed. (Minor corrections and updates which are incorporated at reprint do not cause the date to change.) The part number changes when extensive technical changes are incorporated. New editions of this manual will incorporate all material updated since the previous edition. Internal Date: July 17, 2001 Event Management Lab Hewlett-Packard
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Contents 1. Introduction Hardware Monitoring Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 What is Hardware Monitoring? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 How Does Hardware Monitoring Work? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Benefits of Hardware Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Products Supported
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Contents Polling or Asynchronous? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Startup Client . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Peripheral Status Monitor (PSM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Event Monitoring Service (EMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 File Locat
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Contents Sample Global Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Sample Monitor-Specific Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Startup Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 File Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 File Format .
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Contents 8
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About This Manual This guide is intended for use by system administrators and others involved in managing HP-UX system hardware resources. It describes the installation and use of EMS Hardware Monitors—an important tool in managing the operation and health of system hardware resources. The book is organized as follows: • Chapter 1, “Introduction,” provides a foundation for understanding what the hardware monitors are and how they work. Although not required reading, this material will help
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Supporting Documentation The following documentation contains information related to the installation and use of the hardware event monitors: • Support Plus: Diagnostics User's Guide - provides information on installing the EMS Hardware Monitors. • Managing MC/ServiceGuard (B3936-90024) - provides information on creating package dependencies for hardware resources. • Using EMS HA Monitors (B5735-90001) - provides detailed information on using EMS to create monitoring requests. Note: this man
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Introduction 1 Introduction This chapter introduces the EMS Hardware Monitors. The topics discussed in this chapter include: • What is hardware monitoring? • How does hardware monitoring work? • Benefits of hardware monitoring • Products supported by hardware monitoring • Tips for hardware monitoring • Hardware monitoring terms NOTE Do I Really Need to Read This Chapter? Although it is not essential that you read this material before using the hardware monitors, it will help you understand how
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Introduction Hardware Monitoring Overview Hardware Monitoring Overview What is Hardware Monitoring? Hardware monitoring is the process of watching a hardware resource (such as a disk) for the occurrence of any unusual activity, called an event. When an event occurs, it is reported using a variety of notification methods (such as email). Event detection and notification are all handled automatically with minimal involvement on your part. To achieve a high level of system reliability and avai
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Introduction Hardware Monitoring Overview How Does Hardware Monitoring Work? The following figure shows the basic components involved in hardware monitoring. Figure 1-1 Components Involved in Hardware Monitoring The typical hardware monitoring process works as follows: 1. While monitoring its hardware resources, the hardware event monitor detects some type of abnormal behavior on one of the resources. 2. The hardware event monitor creates the appropriate event message, which includes suggeste
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Introduction Hardware Monitoring Overview Benefits of Hardware Monitoring Hardware monitoring provides the following benefits: • Reduces system downtime by detecting hardware failures when they occur, allowing you to quickly identify and correct problems. • Integrates into MC/ServiceGuard and other applications responsible for maintaining system availability. These applications can now add many hardware resources to the components they monitor. • Minimizes the time required to isolate and rep
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Introduction Hardware Monitoring Overview Products Supported by Hardware Monitors EMS hardware monitors are provided for a wide range of system hardware resources. The following list identifies the types of hardware supported by monitors at the time of publication. A detailed list of the specific hardware products supported by each hardware monitor is included in http://docs.hp.com/hpux/diag/ - the online library for information about EMS Hardware Monitors (look for “Supported Products” unde
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Introduction Hardware Monitoring Overview Tips for Hardware Monitoring Here are some tips for using hardware monitoring. 3 Keep hardware monitoring enabled to protect your system from undetected failures. Hardware monitoring is an important tool for maintaining high-availability on your system. In a high-availability environment, the failure of a hardware resource makes the system vulnerable to another failure. Until the failed hardware is repaired, the backup hardware resource represents a
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Introduction Hardware Monitoring Overview Hardware Monitoring Terms The following terms are used throughout this guide. Understanding them is important when learning how the hardware event monitors work and how to use them effectively. Table 1-1 Hardware Monitoring Terms Term Definition Asynchronous event The ability to detect an event at the time it occurs. When an detection event occurs the monitor is immediately aware of it. This method provides quicker notification response than polling
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Introduction Hardware Monitoring Overview Table 1-1 Hardware Monitoring Terms Term Definition Hardware event A monitor daemon that gathers information on the monitor operational status of hardware resources. Each monitor is responsible for watching a specific group or type of hardware resources. For example, the tape monitor handles all tape devices on the system. The monitor may use polling or asynchronous event detection for tracking events. Unlike a status monitor, an event monitor does
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Introduction Hardware Monitoring Overview Table 1-1 Hardware Monitoring Terms Term Definition Peripheral Status Included with the hardware event monitors, the PSM is a Monitor (PSM) monitor daemon that acts as a hardware status monitor by converting events to changes in hardware resource status. This provides compatibility with MC/ServiceGuard, which uses changes in status to manage cluster resources. Through the EMS GUI, the PSM is also used to create hardware status monitoring requests.
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Introduction Hardware Monitoring Overview 20 Chapter 1
