fastcgi_index
The `fastcgi_index` directive sets the default file to be served when a FastCGI request is processed without a specific file name.
Description
The fastcgi_index directive in NGINX specifies the default file to serve when a FastCGI request is made to a location that does not include a file name. When a client requests a directory, NGINX checks for the presence of the specified fastcgi_index file in the directory. If no specific file is provided in the request, NGINX will automatically append the fastcgi_index value to the request for the FastCGI server to generate a response.
This directive is typically used in conjunction with the fastcgi_param and include settings, allowing for more seamless integration of PHP or other FastCGI-based applications. It enhances the user experience by ensuring that if an index file is expected (such as index.php), it is automatically served without requiring the client to explicitly specify it. This directive can be set at multiple levels of configuration: http, server, and location, which allows for granular control depending on different contexts within your NGINX setup.
Config Example
location / {
index index.php;
fastcgi_index index.php;
fastcgi_pass 127.0.0.1:9000;
include fastcgi_params;
}Ensure that the specified file exists in the directory for it to be served correctly.
Not setting this directive may lead to 404 errors if the index file is expected but not specifically requested from FastCGI.