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Effective Monitoring and Alerting
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监控领域少有之作,开发监控系统必备参考。 The book describes data-driven approach to optimal monitoring and alerting in distributed computer systems. It interprets monitoring as a continuous process aimed at extraction of meaning from system's data. The resulting wisdom drives effective maintenance and fast recovery - the bread and butter of web operations. The content of the book gives a scalable perspective on the following topics: anatomy of monitoring and alerting conclusive interpretation of time series data-driven approach to setting up monitors addressing system failures by their impact applications of monitoring in automation reporting on quality with quantitative means and more!
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ISBN: 978-1-449-33352-2
[LSI]
Effective Monitoring and Alerting
by Slawek Ligus
Copyright © 2013 Slawek Ligus. All rights reserved.
Printed in the United States of America.
Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472.
O’Reilly books may be purchased for educational, business, or sales promotional use. Online editions are
also available for most titles (http://my.safaribooksonline.com). For more information, contact our corporate/
institutional sales department: 800-998-9938 or corporate@oreilly.com.
Editors: Andy Oram and Mike Hendrickson
Production Editor: Rachel Steely
Proofreader: Mary Ellen Smith
Cover Designer: Karen Montgomery
Interior Designer: David Futato
Illustrator: Robert Romano
Revision History for the First Edition:
2012-11-20 First release
See http://oreilly.com/catalog/errata.csp?isbn=9781449333522 for release details.
Nutshell Handbook, the Nutshell Handbook logo, and the O’Reilly logo are registered trademarks of O’Reilly
Media, Inc. Effective Monitoring and Alerting, the image of a largetooth sawfish, and related trade dress are
trademarks of O’Reilly Media, Inc.
Many of the designations used by manufacturers and sellers to distinguish their products are claimed as
trademarks. Where those designations appear in this book, and O’Reilly Media, Inc., was aware of a trade‐
mark claim, the designations have been printed in caps or initial caps.
While every precaution has been taken in the preparation of this book, the publisher and author assume no
responsibility for errors or omissions, or for damages resulting from the use of the information contained
herein.
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Table of Contents
Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
1.
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Monitoring, Alerting, and What They Can Do for You 1
Early Problem Detection 2
Decision Making 3
Automation 4
Monitoring and Alerting in a Nutshell 5
Metrics and Timeseries 5
Alarms, Alerts, and Monitors 6
Monitoring System 6
The Process of Alerting 8
Issue Tracking 9
The Challenges 10
Important Terms 12
2.
Monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
The Building Blocks 15
Data Collection 15
Coverage 17
Metrics 21
Example: Inputs, Metrics, and Timeseries 25
Understanding Metrics 26
Timeseries Patterns 32
Drawing Conclusions from Timeseries Plots 34
Interpretation of Anomalies 35
Frequently Encountered Anomalies 38
Determining Causality 41
iii
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