Even if you read every single word of this book with the utmost attention, you are unfortunately not sheltered from all kinds of issues, ranging from simple configuration errors to the occasional unexpected behavior of one module or another. In this chapter, we will attempt to provide solutions for some of the common problems encountered by administrators who are just getting started with Nginx.

The appendix covers the following topics:

• A basic guide containing general tips on Nginx troubleshooting
• How to solve some of the most common install issues
• Dealing with 403 Forbidden and 400 Bad Request HTTP errors
• Why your configuration does not appear to apply correctly
• A few words about the if block behavior