How to Fix error 404 Error – Nginx reverse proxy container return error 404 Not Found on .php files
Nginx reverse proxy container returns error 404 Not Found on .php files due to incorrect configuration.
📋 Table of Contents
Nginx reverse proxy container returns an error 404 Not Found on .php files, affecting users who navigate to these files. This issue is frustrating for developers and administrators who rely on Nginx for serving dynamic content.
The problem arises from a misconfiguration in the Nginx reverse proxy setup, causing it to fail to pass PHP requests properly. In this guide, we will walk you through the steps to resolve this issue and ensure that .php files are served correctly.
🛑 Root Causes of the Error
- The primary reason for this error is that the `fastcgi_pass` directive in the Nginx configuration is pointing to a non-existent container. The `vhost-php` container is not exposed on port 9000, which is the default port used by PHP-FPM. This causes Nginx to return an error 404 Not Found for any requests to .php files.
- An alternative reason could be that the `fastcgi_split_path_info` directive is incorrectly configured, causing Nginx to split the path info incorrectly and resulting in an error 404 Not Found.
🛠️ Step-by-Step Verified Fixes
Configure Nginx to use the correct PHP-FPM container
- Step 1: Update the `fastcgi_pass` directive in the per-VIRTUAL_HOST configuration file to point to the correct port and container. For example, change `fastcgi_pass vhost-php:9000;` to `fastcgi_pass php:9000;`. This will tell Nginx to pass PHP requests to the correct container on port 9000.
- Step 2: Verify that the `php` container is exposed on port 9000 by checking the Docker Compose file. Ensure that the `expose` directive for the `php` container includes port 9000, like this: `expose: - 9000`.
- Step 3: Restart the Nginx service after making these changes to ensure that the new configuration takes effect.
Verify and correct fastcgi_split_path_info configuration
- Step 1: Check the value of `fastcgi_split_path_info` in the per-VIRTUAL_HOST configuration file. Ensure that it is set correctly to split the path info properly, like this: `fastcgi_split_path_info ^(.+\.php)(/.+)$;`. This will prevent Nginx from returning an error 404 Not Found for requests to .php files.
- Step 2: Verify that the `fastcgi_index` directive is set correctly to point to a valid PHP file. For example, change `fastcgi_index index.php;` to `fastcgi_index index.php;` if you have a different PHP file as your index file.
🎯 Final Words
By following these steps and correcting the Nginx configuration, you should be able to resolve the error 404 Not Found on .php files in your reverse proxy setup. Remember to restart the Nginx service after making changes to ensure that they take effect.
❓ Frequently Asked Questions
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