Book Image

Nginx Troubleshooting

By : Alexey Kapranov
Book Image

Nginx Troubleshooting

By: Alexey Kapranov

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 (15 chapters)
Nginx Troubleshooting
About the Author
About the Reviewers
Rare Nginx Error Messages


In this chapter, we refreshed our knowledge of how logging works in Nginx. There are two types of logs; one of them may be infinitely extended, whereas the other is hard to parse by scripts because it does not have enough structure.

We spent some time on special topics, such as log rotation and logging POST request bodies (with a small test stand that we created step by step in the chapter, no less).

We also analyzed several error records from some real error logs.

The next chapter will have more actual problems analyzed and troubleshot. We will present several cases of actual problems that people had with read Nginx installations and try to debug them from the ground up.