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| Foreword by the Nagios Creator, Ethan Galstad | |
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| Introduction | |
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| Do It Right the First Time | |
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| Why Nagios? | |
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| What's in This Book? | |
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| Who Should Read This Book? | |
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| End Notes | |
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| Best Practices | |
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| A Procedural Approach to Systems Monitoring | |
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| Processing and Overhead | |
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| Remote Versus Local Processing | |
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| Bandwidth Considerations | |
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| Network Location and Dependencies | |
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| Security | |
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| Silence Is Golden | |
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| Watching Ports Versus Watching Applications | |
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| Who's Watching the Watchers? | |
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| End Notes | |
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| Theory of Operations | |
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| The Host and Service Paradigm | |
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| Starting from Scratch | |
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| Hosts and Services | |
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| Interdependence | |
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| The Downside of Hosts and Services | |
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| Plug-ins | |
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| Exit Codes | |
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| Remote Execution | |
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| Scheduling | |
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| Check Interval and States | |
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| Distributing the Load | |
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| Reapers and Parallel Execution | |
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| Notification | |
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| Global Gotchas | |
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| Notification Options | |
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| Templates | |
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| Time Periods | |
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| Scheduled Downtime, Acknowledgments, and Escalations | |
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| I/O Interfaces Summarized | |
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| The Web Interface | |
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| Monitoring | |
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| Reporting | |
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| The External Command File | |
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| Performance Data | |
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| The Event Broker | |
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| End Notes | |
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| Installing Nagios | |
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| OS Support and the FHS | |
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| Installation Steps and Prerequisites | |
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| Installing Nagios | |
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| Configure | |
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| Make | |
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| Make Install | |
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| Installing the Plug-ins | |
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| Installing NRPE | |
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| End Notes | |
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| Configuring Nagios | |
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| Objects and Definitions | |
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| nagios.cfg | |
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| The CGI Config | |
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| Templates | |
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| Timeperiods | |
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| Commands | |
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| Contacts | |
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| Contactgroup | |
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| Hosts | |
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| Services | |
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| Hostgroups | |
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| Servicegroups | |
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| Escalations | |
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| Dependencies | |
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| Extended Information | |
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| Apache Configuration | |
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| GO! | |
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| End Notes | |
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| Bootstrapping the Nagios Config Files | |
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| Scripting Templates | |
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| Autodiscovery | |
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| Check_MK | |
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| Nagios XI | |
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| Autodiscovery Is Dead: Long Live Autodiscovery | |
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| NagiosQL | |
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| Watching: Monitoring Through the Nagios Plug-ins | |
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| Local Queries | |
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| Pings | |
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| Port Queries | |
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| Querying Multiple Ports | |
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| (More) Complex Service Checks | |
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| E2E Monitoring with Weblnject and Cucumber-Nagios | |
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| Watching Windows | |
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| The Windows Scripting Environment | |
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| COM and OLE | |
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| WMI | |
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| To WSH or Not to WSH | |
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| To VB or Not to VB | |
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| The Future of Windows Scripting | |
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| Getting Down to Business | |
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| NRPE | |
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| Check_NT | |
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| NSCP | |
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| Watching UNIX | |
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| NRPE | |
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| CPU | |
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| Memory | |
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| Disk | |
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| Check_MK | |
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| Watching "Other Stuff" | |
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| SNMP | |
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| Working with SNMP | |
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| Environmental Sensors | |
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| Standalone Sensors | |
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| LMSensors | |
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| IPMI | |
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| End Notes | |
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| Scaling Nagios | |
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| Tuning, Optimization, and Some Building Blocks | |
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| NRDP/NSCA | |
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| NDOUtils | |
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| Distributed Passive Checks with Secondary Nagios Daemons | |
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| Event Broker Modules: DNX, Merlin, and Mod Gearman | |
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| DNX | |
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| Mod Gearman | |
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| Op5 Merlin | |
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| Distributed Dashboards: Fusion, MNTOS, and MK-Multisite | |
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| Visualization | |
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| Nagios Performance Data | |
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| RRDTool: The Foundation | |
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| Enter RRDTool | |
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| RRD Data Types | |
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| Heartbeat and Step | |
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| Min and Max | |
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| Round Robin Archives | |
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| RRD Tool Create Syntax | |
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| RRD Tool Graph Mode | |
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| RPN | |
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| Data Visualization Strategies: A Tale of Three Networks | |
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| Suitcorp: Nagios, NagiosGraph, and Drraw | |
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| singularity.gov: Nagios and Ganglia | |
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| Massive Ginormic: Nagios, Logsurfer, Graphite, and Life After RRDTool | |
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| DIY Dashboards | |
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| Know What You're Doing | |
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| RRDTool Fetch Mode | |
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| The GD Graphics Library | |
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| NagVis | |
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| GraphViz | |
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| Sparklines | |
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| Force Directed Graphs with jsvis | |
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| End Notes | |
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| Nagios XI | |
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| What Is It? | |
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| How Does It Work? | |
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| What's in It for Me? | |
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| One Slick Interface | |
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| Integrated Time Series Data | |
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| Modularized Components | |
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| Enhanced Reporting and Advanced Visualization | |
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| Integrated Plug-ins and Configuration Wizards | |
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| Operational Improvements | |
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| How Do I Get My Hands on It? | |
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| The Nagios Event Broker Interface | |
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| Function References and Callbacks in C | |
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| The NEB Architecture | |
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| Implementing a Filesystem Interface Using NEB | |
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| DNX, a Real-World Example | |
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| Wrap Up | |
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| End Notes | |
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| Index | |