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Learning Nagios 3.0电子书

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45人正在读 | 0人评论 9.8

作       者:Wojciech Kocjan

出  版  社:Packt Publishing

出版时间:2008-10-17

字       数:130.8万

所属分类: 进口书 > 外文原版书 > 电脑/网络

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This is a beginner-level book, which will introduce Nagios to System Administrators who are interested in monitoring their systems. The focus is on teaching system administrators to secure their systems in a much improved manner incorporating the newer features of Nagios. It will teach Nagios beginners the basics of installation and configuration of version 3; it will show professionals who have already worked on earlier versions of Nagios the new features of Nagios like inheritance and also the new internal functions like better check scheduling. The target readers for this book are System Administrators interested in using Nagios. This book will introduce Nagios with the new features of Version 3 for System Administrators.
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Learning Nagios 3.0

Table of Contents

Learning Nagios 3.0

Credits

About the Author

About the Reviewer

Preface

What This Book Covers

What You Need for This Book

Who is This Book For

Conventions

Reader Feedback

Customer Support

Downloading the Example Code for the Book

Errata

Piracy

Questions

1. Introduction

Introduction to Nagios

Benefits of Monitoring Resources

Main Features

S oft and Hard States

What's New in Nagios 3.0?

Summary

2. Installation and Configuration

Installation

Upgrading from Previous Versions

Prerequisites

Obtaining Nagios

Setting up Users and Groups

Nagios Compilation

Registering Nagios as a System Service

Nagios Configuration

Main Configuration File

Macro Definitions

Configuring Hosts

Configuring Services

Configuring Commands

Configuring Time Periods

Configuring Contacts

Templates and Object Inheritance

Introduction to Notifications

Summary

3. Using the Nagios Web Interface

Setting up the Web Interface

Configuring the Web Server

Accessing the Web Interface

Troubleshooting

Using the Web Interface

Tactical Overview

Status map

Managing Hosts

Status

Host Information

Managing Services

Status

Service Information

Managing Downtimes

Downtimes Status

Scheduling Downtimes

Managing Comments

Nagios Information

Process Information

Performance Information

Reports

Summary

4. Overview of Nagios Plugins

Standard Network Plugins

Checking If a Host is Alive

Testing Connectivity over TCP and UDP

Monitoring Email Servers

POP3 and IMAP Checks

SMTP Daemon Testing

Monitoring Network Services

FTP Server

DHCP Tests

Verifying the Nagios Daemon

Testing Web Sites

Monitoring Database Systems

MySQL

PostgreSQL

Oracle

Other Databases

Storage Space

Virtual Memory Monitoring

Monitoring IDE/SCSI SMART

Checking Disk Space

Testing Free Space for Remote Shares

Resource Monitoring

System Load

Checking Processes

Monitoring Logged-in Users

Miscellaneous Plugins

APT Updates Checking

UPS Status Checking

LM Sensors

Dummy Check Plugin

Manipulating Other Plugins' Output

Summary

5. Advanced Configuration

Maintainable Configurations

Configuration File Structure

Defining Dependencies

Using Templates

C ustom Variables

Flapping

Summary

6. Notifications and Events

Effective Notifications

Escalations

External Commands

Event Handlers

Modifying Notifications

Adaptive Monitoring

Summary

7. Passive Checks and NSCA

What are Passive Checks?

Configuring Passive Checks

P assive Checks—Hosts

Passive Checks—Services

Troubleshooting Passive Checks

What is NSCA?

Obtaining NSCA

Compiling NSCA

Configuring the NSCA Server

Sending results over NSCA

Security Concerns

Summary

8. Monitoring Remote Hosts

Monitoring over SSH

Configuring SSH

Using the check_by_ssh Plugin

Performing Multiple Checks

Troubleshooting SSH-Based Checks

Introduction to NRPE

Obtaining NRPE

Compiling NRPE

Configuring the NRPE Daemon

Installing NRPE as a System Service

Configuring Nagios for NRPE

NRPE and Command Arguments

Other Approaches

Troubleshooting NRPE

Summary

9. SNMP

Introduction to SNMP

Data Objects

Working with SNMP and MIB

Graphical Tools

Setting up an SNMP Agent

Using SNMP from Nagios

Receiving Traps

Additional Plugins

Summary

10. Advanced Monitoring

Monitoring Windows Hosts

NSClient++

Performing Tests via check_nt

Performing Checks with NRPE Protocol

Passive Checks using NSCA Protocol

Distributed Monitoring

Obsessive Notifications

Configuring Nagios Instances

Freshness Checking

Summary

11. Extending Nagios

Introduction

Active Checks

Writing Plugins the Right Way

Checking Websites

Monitoring VMware

Your Own Notifications

Managing Nagios

Using Passive Checks

Summary

Index

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