Learning Nagios 3.0. A comprehensive configuration guide to monitor and maintain your network and systems

Learning Nagios 3.0. A comprehensive configuration guide to monitor and maintain your network and systems - Opis

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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
Whats 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 (...) więcej 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 ChecksHosts
Passive ChecksServices
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 mniej