File upload results with connection reset

Question

I am experiencing an issue on an EC2 instance. When trying to upload a file I get different behaviours :

• file size about 1.5mb : file is correctly sent to the server and processed by the backend
• file size about 2mb : 408 Timeout
• file size larger than 2mb : upload freezes at about 23 seconds and I get a ERR:CONNECTION_RESET message in the console

Stack :

• EC2 instance (not using any ELB)

• Docker with the following :

  • httpd (2.4+)
  • proxy php-fpm (php7+)
  • mysql
  • redis (not in use yet)

I have tried the following :

• Increased TimeOut to 120, KeepAlive On and increased KeepAliveTimeout to 120 in apache
• Increased LimitRequestBody and LimitXMLRequestBody to 25000000
• Added ProxySet connectiontimeout=120 timeout=120 in the Proxy directive in apache when calling the php-fpm proxy
• Set pm.process_idle_timeout = 120s in the php-fpm conf file
• Increased all possible Timeout and File Size parameters in the php.ini
• Rebuilt more than a hundered times the docker stack and rebooted the instance countless times

And, of course, this works perfectly fine locally, but doesn't on the EC2 instance.

Thoughts anyone ? Thanks in advance

Answer 1

Finally solved it by adding the following line in apache :

RequestReadTimeout handshake=5 header=10 body=120

Which specifies timeouts at different statuses of the request