If you're familiar with Elastic Beanstalk and Parse Server, you would have noticed that by default you can't upload files greater than 1000KB in size. This is because, NGINX has a limit of 1MB on file uploads. If the request size goes beyond the configured value, then the 413 Request Entity Too Large error is returned. In order to upload files larger than 1 MB, we need to configure the client_max_body_size directive in the NGINX configuration files.

Solution

1. To extend the Elastic Beanstalk default NGINX configuration, add the .conf configuration file client_max_body_size.conf that includes the following:

              
                client_max_body_size 50M;
              
            

You can use any value of your choice, for my requirement 50MB was enough.

2. Copy the .conf configuration file client_max_body_size.conf to a folder named .platform/nginx/conf.d/ in your application source bundle. The Elastic Beanstalk NGINX configuration includes .conf files in this folder automatically. Make sure to create this path if it doesn't exist in your source bundle.

Your path should look something like this my-app/.platform/nginx/conf.d/client_max_body_size.conf.

Now you can deploy your code and test the new version in your Elastic Beanstalk environment.