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.