Opis: Nagios - David Josephsen

The Fully Updated Guide to Enterprise Network Monitoring with Today's Nagios Platform and Tools This is the definitive guide to building cost-effective, enterprise-strength monitoring infrastructures with the latest commercial and open source versions of Nagios. World-renowned monitoring expert David Josephsen covers the entire monitoring software stack, treating Nagios as a specification language and foundation for building well designed monitoring systems that can scale to serve any organization. Drawing on his unsurpassed experience, Josephsen demonstrates best practices throughout and also reveals common mistakes, their consequences, and how to avoid them. He provides all the technical depth you need to configure and run Nagios successfully, including a practical and thorough discussion of writing your own custom modules with the C-based Nagios Event-Broker API. Extensively updated throughout, this edition adds an entirely new chapter on scaling Nagios for large, complex networks that rely heavily on virtualization and cloud services. Josephsen thoroughly introduces Nagios XI, the advanced new commercial version of Nagios and shows how to improve productivity with the latest third-party tools and plug-ins. Coverage includes: * Learn how Nagios works, in depth * Master focused, efficient techniques for configuring and deploying the latest versions of Nagios * Solve real-world problems in monitoring Windows and UNIX systems, networking hardware, and environmental sensors * Systematically scale and optimize Nagios for the largest enterprise environments * Enhance your monitoring system with new tools including Check-MK, Op5 Merlin, and SFlow * Integrate visualization via Ganglia, Graphite, and RRDTool * Simplify and streamline all facets of system monitoring with Nagios XI * Build powerful custom Nagios Event Broker (NEB) modules, step-by-step * Learn about easy-to-understand code listings, fully updated for today's platforms No matter how complex your systems monitoring challenges are, this book will help you achieve the results you want-right from the start.Foreword by the Nagios Creator, Ethan Galstad xiii Introduction 1 Do It Right the First Time 1 Why Nagios? 2 What's in This Book? 4 Who Should Read This Book? 7 End Notes 7 CHAPTER 1 Best Practices 9 A Procedural Approach to Systems Monitoring 9 Processing and Overhead 12 Remote Versus Local Processing 12 Bandwidth Considerations 13 Network Location and Dependencies 14 Security 16 Silence Is Golden 19 Watching Ports Versus Watching Applications 20 Who's Watching the Watchers? 21 End Notes 22 CHAPTER 2 Theory of Operations 23 The Host and Service Paradigm 24 Starting from Scratch 24 Hosts and Services 26 Interdependence 26 The Downside of Hosts and Services 27 Plug-ins 28 Exit Codes 28 Remote Execution 31 Scheduling 34 Check Interval and States 34 Distributing the Load 36 Reapers and Parallel Execution 38 Notification 39 Global Gotchas 39 Notification Options 40 Templates 41 Time Periods 41 Scheduled Downtime, Acknowledgments, and Escalations 42 I/O Interfaces Summarized 43 The Web Interface 43 Monitoring 45 Reporting 46 The External Command File 48 Performance Data 48 The Event Broker 49 End Notes 50 CHAPTER 3 Installing Nagios 51 OS Support and the FHS 51 Installation Steps and Prerequisites 53 Installing Nagios 54 Confi gure 54 Make 55 Make Install 56 Installing the Plug-ins 57 Installing NRPE 59 End Notes 60 CHAPTER 4 Confi guring Nagios 61 Objects and Defi nitions 62 nagios.cfg 64 The CGI Confi g 67 Templates 68 Timeperiods 70 Commands 71 Contacts 73 Contactgroup 74 Hosts 75 Services 77 Hostgroups 79 Servicegroups 79 Escalations 80 Dependencies 81 Extended Information 83 Apache Confi guration 83 GO! 85 End Notes 85 CHAPTER 5 Bootstrapping the Nagios Confi g Files 87 Scripting Templates 87 Autodiscovery 91 Check_MK 91 Nagios XI 92 Autodiscovery Is Dead: Long Live Autodiscovery 92 NagiosQL 92 CHAPTER 6 Watching: Monitoring Through the Nagios Plug-ins 95 Local Queries 95 Pings 96 Port Queries 98 Querying Multiple Ports 100 (More) Complex Service Checks 102 E2E Monitoring with WebInject and Cucumber-Nagios 104 Watching Windows 111 The Windows Scripting Environment 111 COM and OLE 113 WMI 113 To WSH or Not to WSH 118 To VB or Not to VB 119 The Future of Windows Scripting 119 Getting Down to Business 121 NRPE 122 Check_NT 123 NSCP 124 Watching UNIX 125 NRPE 125 CPU 126 Memory 129 Disk 130 Check_MK 131 Watching "Other Stuff" 135 SNMP 135 Working with SNMP 137 Environmental Sensors 142 Standalone Sensors 143 LMSensors 144 IPMI 145 End Notes 146 CHAPTER 7 Scaling Nagios 149 Tuning, Optimization, and Some Building Blocks 149 NRDP/NSCA 150 NDOUtils 150 Distributed Passive Checks with Secondary Nagios Daemons 150 Event Broker Modules: DNX, Merlin, and Mod Gearman 153 DNX 154 Mod Gearman 156 Op5 Merlin 157 Distributed Dashboards: Fusion, MNTOS, and MK-Multisite 159 CHAPTER 8 Visualization 167 Nagios Performance Data 168 RRDTool: The Foundation 168 Enter RRDTool 170 RRD Data Types 171 Heartbeat and Step 172 Min and Max 174 Round Robin Archives 174 RRDTool Create Syntax 175 RRDTool Graph Mode 180 RPN 182 Data Visualization Strategies: A Tale of Three Networks 185 Suitcorp: Nagios, NagiosGraph, and Drraw 185 singularity.gov: Nagios and Ganglia 192 Massive Ginormic: Nagios, Logsurfer, Graphite, and Life After RRDTool 200 DIY Dashboards 209 Know What You're Doing 210 RRDTool Fetch Mode 212 The GD Graphics Library 214 NagVis 215 GraphViz 217 Sparklines 218 Force Directed Graphs with jsvis 220 End Notes 221 CHAPTER 9 Nagios XI 223 What Is It? 223 How Does It Work? 224 What's in It for Me? 226 One Slick Interface 226 Integrated Time Series Data 227 Modularized Components 228 Enhanced Reporting and Advanced Visualization 228 Integrated Plug-ins and Confi guration Wizards 230 Operational Improvements 234 How Do I Get My Hands on It? 235 CHAPTER 10 The Nagios Event Broker Interface 237 Function References and Callbacks in C 237 The NEB Architecture 239 Implementing a Filesystem Interface Using NEB 242 DNX, a Real-World Example 255 Wrap Up 258 End Notes 259 Index 261

Szczegóły: Nagios - David Josephsen

Tytuł: Nagios
Autor: David Josephsen
Producent: Prentice Hall
ISBN: 9780133135732
Rok produkcji: 2013
Ilość stron: 304
Oprawa: Miękka
Waga: 0.48 kg

Recenzje: Nagios - David Josephsen