: How to configure URI in Nginx to serve different web app than in the main domain? I have CMS running on domain.tld. Now I would like to configure Nginx to server another app from domain.tld/app.

@Cugini213

In order to serve an app with a different document root from within a subdirectory, you should use the ^~ modifier on the prefix location so that other regular expression location blocks do not cause a conflict. See this document for details.

If the app uses PHP, you can use a nested location block to inherit the different root.

For example (and this is just a starting point):

location ^~ /app {
root /var/www/html;

index index.php;
try_files $uri $uri/ /app/index.php;

location ~ .php$ {
try_files $uri =404;

include ...; # this is your system's fastcgi_params file
fastcgi_param SCRIPT_FILENAME $request_filename;
fastcgi_pass ...; # this is a socket or IP:port for php-fpm
}
}


I have left some ...s in as they depend on your specific installation. Notice that the root is appended to the URI to locate the physical file, so /app/index.php will be located at /var/www/html/app/index.php.

Finally, the app must know that it runs in a subfolder. When it requests resource files (such as .js and .css) it must prefix the URI with /app/, otherwise the main apps resources will be loaded.

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