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Learning Nagios 3.0

Book Image

Learning Nagios 3.0

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Learning Nagios 3.0
Oct, 2008 | 316 pages
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Table of Contents (16 chapters)
Learning Nagios 3.0
Learning Nagios 3.0
Credits
Credits
About the Author
About the Author
About the Reviewer
About the Reviewer
Preface
Preface
Free Chapter
1
Introduction
Introduction
Introduction to Nagios
Benefits of Monitoring Resources
Main Features
Soft and Hard States
What's New in Nagios 3.0?
Summary
2
Installation and Configuration
Installation and Configuration
Installation
Nagios Configuration
Summary
3
Using the Nagios Web Interface
Using the Nagios Web Interface
Setting up the Web Interface
Using the Web Interface
Managing Hosts
Managing Services
Managing Downtimes
Managing Comments
Nagios Information
Reports
Summary
4
Overview of Nagios Plugins
Overview of Nagios Plugins
Standard Network Plugins
Monitoring Email Servers
Monitoring Network Services
Monitoring Database Systems
Storage Space
Resource Monitoring
Miscellaneous Plugins
Summary
5
Advanced Configuration
Advanced Configuration
Maintainable Configurations
Configuration File Structure
Defining Dependencies
Using Templates
Custom Variables
Flapping
Summary
6
Notifications and Events
Notifications and Events
Effective Notifications
Escalations
External Commands
Event Handlers
Modifying Notifications
Adaptive Monitoring
Summary
7
Passive Checks and NSCA
Passive Checks and NSCA
What are Passive Checks?
Configuring Passive Checks
Passive 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 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
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
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
Extending Nagios
Introduction
Active Checks
Writing Plugins the Right Way
Checking Websites
Monitoring VMware
Your Own Notifications
Managing Nagios
Using Passive Checks
Summary

About the Author

Wojciech Kocjan is an experienced system administrator, IT professional, and software engineer. He has ten years of experience in the IT industry, and his resume includes international corporations such as IBM and Motorola. He also has several years of experience in a variety of open source projects. His expertise includes managing Linux, Sun, and IBM systems.

I'd like to thank my wife Joanna and my son Kacper for all of the help and support during the writing of this book. I would also like to thank people at Packt as they have given me a lot of help and plenty of practical advice.

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