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Nagios: Building Enterprise-Grade Monitoring Infrastructures for Systems and Networks, Second Edition by David Josephsen

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Introduction

This is a book about untrustworthy machines—machines, in fact, that are every bit as untrustworthy as they are critical to our well being. But I don’t need to bore you with a laundry list of how prevalent computer systems have become or with horror stories about what can happen when they fail. If you picked up this book, I’m sure you’re well aware of the problems: layer upon layer of interdependent libraries hiding bugs in their abstraction, script kiddies, viruses, DDOS attacks, hardware failure, end-user error, backhoes, hurricanes, and on and on. It doesn’t matter whether the root cause is malicious or accidental; your systems will fail, and when they do, only two things will save you from the downtime: redundancy and monitoring ...

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