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  • Book Overview & Buying Nginx Troubleshooting
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Nginx Troubleshooting

Nginx Troubleshooting

By : Alexey Kapranov
Buy this Book
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Nginx Troubleshooting

Nginx Troubleshooting

By: Alexey Kapranov
Buy this Book

Overview of this book

Nginx is clearly winning the race to be the dominant software to power modern websites. It is fast and open source, maintained with passion by a brilliant team. This book will help you maintain your Nginx instances in a healthy and predictable state. It will lead you through all the types of problems you might encounter as a web administrator, with a special focus on performance and migration from older software. You will learn how to write good configuration files and will get good insights into Nginx logs. It will provide you solutions to problems such as missing or broken functionality and also show you how to tackle performance issues with the Nginx server. A special chapter is devoted to the art of prevention, that is, monitoring and alerting services you may use to detect problems before they manifest themselves on a big scale. The books ends with a reference to error and warning messages Nginx could emit to help you during incident investigations.
Table of Contents (10 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Searching for Problems in Nginx Configuration
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1. Searching for Problems in Nginx Configuration
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Introducing basic configuration syntax, directives, and testing
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Testing Nginx configuration
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Common mistakes in configuration
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Summary
2
2. Searching for Problems in Log Files
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2. Searching for Problems in Log Files
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Configuring Nginx logging
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Creating infrastructure around logs
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Summary
3
3. Troubleshooting Functionality
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3. Troubleshooting Functionality
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Processing a complain
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Summary
4
4. Optimizing Website Performance
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4. Optimizing Website Performance
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Why Nginx is so fast?
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Optimizing individual upstreams
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Using thread pools in Nginx
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The caching layer of Nginx
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Replacing external redirects with internal ones
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Summary
5
5. Troubleshooting Rare Specific Problems
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5. Troubleshooting Rare Specific Problems
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Security warnings
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Solving problems with cache
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Obsolete pages and VirtualBox
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Apache migration problems
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Solving problems with WebSockets
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Showing a file upload progress bar
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Solving the problem of an idle upstream
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Summary
6
6. Monitoring Nginx
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6. Monitoring Nginx
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Using ngxtop
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Getting statistics from http_stub_status
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Monitoring Nginx with Munin
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Configuring alerts
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Getting more status data from Nginx
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Using Nginx Plus alternatives
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Summary
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7. Going Forward with Nginx
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7. Going Forward with Nginx
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System administration
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Software development
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Summary
8
A. Rare Nginx Error Messages
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A. Rare Nginx Error Messages
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Index
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Index

Chapter 6. Monitoring Nginx

After reading this chapter you will be able to set up proper monitoring for your Nginx installation using the features freely available as part of base Nginx distribution and several of the more popular monitoring and alerting systems available on the market.

You will also get acquainted with an advanced monitoring solution that is included in the Nginx Plus subscription package, which the makers of Nginx sell as a commercial service.

Knowing what is happening to your web server is the first step towards fixing and preventing any problems. Setting up monitoring and alerting is one of the essential steps in any production deployment, and Nginx web servers are not the exception here. Experienced web administrators will never feel calm enough until they have real-time insight into the performance and load indicators.

There are several sources of data for your monitoring system provided by Nginx. First, there are logs, which you may configure up to your preferences...

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