Nginx03-Configuration-Optimization

Optimizing the NGINX Configurations

• Location of the nginx main config file is /etc/nginx/nginx.conf
• Let us know about this configuration file and its options first
• worker_processes
  • This is responsible for machine to know how many workers are available to spawned after getting bounded to an IP / Port.
• worker_connections
  • By default this will be set to 1 but depending on the connections the host can accept we can change it.
  • Through ulimit -n we can know the max number of connections allowed to a host.

   worker_connections 1024;
  

• Buffers This section should be placed in the html section and before the include statement of the nginx config file.
  • client_body_buffer_size

   client_body_buffer_size 10k;
  

  • client_header_buffer_size

   client_header_buffer_size 1k;
  

  • client_max_body_size

   client_max_body_size 8m;
  

  • large_client_header_buffers

   large_client_header_buffers 2 1k;
  

• Timeouts This will tell the server to know the max time to wait after a request has been received from a client. There are 2 types of timeouts.
  • client_body_timeout This can be set to a max of 12 seconds.

   client_body_timeout 12;
  

  • client_header_timeout Maintaining the same as the timeout for the body

   client_header_timeout 12;
  

  • keep_alive_timeout, send_timeout These will let the system know till when a request can be waited and when to send the error if not able to serve the request. If you already have these then you can modify those as per your choice.

   keep_alive_timeout 15;
   send_timeout 10;
  

• Test your configurations This would always be a good practice to verify your config before restarting the application as you can get to know where you have misconfigured.

# nginx -t

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

• Restart nginx

# systemctl restart nginx