If you are running nginx on Amazon EC2 instance, behind Amazon Elastic Load Balancer (ELB), for any IP-specific nginx config and/or applicaiton code to work, you need to do following:

Open /etc/nginx/nginx.conf file

Add following inside http {..} block


			real_ip_header X-Forwarded-For;
set_real_ip_from 0.0.0.0/0;

Then just reload nginx for change to take effect.

Security Consideration:

If your nginx EC2 instance can be accessed directly, apart from traffic coming through Elastic Load Balancer, then its better to change:


			set_real_ip_from 0.0.0.0/0;

to fixed IP address assigned to Elastic Load Balancer.

If IP address for ELB is 1.2.3.4, then it should look like:


			set_real_ip_from 1.2.3.4;

Adding $upstream_cache_status in HTTP Response Headers

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Comments

Philip

February 2, 2014

Thanks. That really helped me out after reading 10 other suggestions that didn’t work 🙂
1. Rahul Bansal
  
  February 6, 2014
  
  Glad to know that. 🙂

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