How to Configure Nginx Index Files

The index directive specifies default files for directory requests. Ordering index files by preference ensures the correct one is served. This guide walks through the specific troubleshooting steps to diagnose and resolve index configuration issues.

Before You Begin

Before you begin, be sure to have the following in place:

• A Linux server with the relevant software installed
• Access to the command line interface
• Appropriate permissions (root or sudo)

Quick Fix

Wrong

index index.html;

Wrong: Single index file without fallback

Right

index index.html index.php index.htm;\nlocation / {\n    try_files $uri $uri/ /index.php?$query_string;\n}

Right: Multiple index files with PHP fallback

Output

Index files configured:\n  Order: index.html, index.php, index.htm\n  PHP fallback: enabled

Prevention

To avoid future issues, follow these best practices:

• List index files in order of preference
• The index directive works alongside try_files for complex routing
• Use index with PHP applications for clean URLs
• Index is checked when a directory is requested
• Directory index requires autoindex to be off

DodaTech Tools

For further assistance with any of the above issues, consider using DodaTech consulting services or DodaTech tutorials for more in-depth guidance.

Common Mistakes with index

1. Using head and tail instead of pattern matching, causing runtime errors on empty lists
2. Forgetting that lazy evaluation defers computation until the value is forced, causing space leaks with unevaluated thunks
3. Using return to exit a function early instead of wrapping a pure value in the monad

These mistakes appear frequently in real-world NGINX code. DodaTech's contributors have identified these patterns through analysis of open-source projects and production systems.

Practice Exercise

Write a pure function that safely divides two integers using Maybe, then test it with edge cases like division by zero and negative numbers.

This exercise reinforces the concepts covered in this guide. Try implementing it before checking online solutions.

FAQ