Rajeev Kannav Sharma

Posts About

Restrict nginx upload file size limit

14 Nov 2015

Problem:

 We've an Enterprise level Rails application and we need to have 
 Upload size restrictions because this could lead to a DOS(denial-of-service)
 to the application via filling the HDD or utilizing web resources and 
 solution must be easy/Generic.

Solution

We updated our nginx configuration `client_max_body_size size` which
sets the maximum allowed size of the client request body, specified
in the “Content-Length” request header field. If the size in a request
exceeds the configured value, the 413 (Request Entity Too Large) error
is returned to the client. 
sudo/RAW solution to nginx configuration
client_max_body_size 50m; # 50MB for file size restriction
Syntax: 	client_max_body_size size;
Default: 	client_max_body_size 1m;
Context: 	http, server, location

Please be aware that browsers cannot correctly display this error. Setting size to 0 disables checking of client request body size.

And if you get stuck… Ask Here

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