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Nginx Tutorials and HowTos

Nginx is a free, open-source, high-performance HTTP server and reverse proxy software. This section includes tutorials about Nginx configuration, security, optimization, and tips under Unix like operating systems ( rss feed ).

I've tons of images, css and javascript hosted at backend server IP 192.168.1.5 and 192.168.1.6. How do I make sure nginx reverse proxy load balancer always send all http_user_agent requests coming from "Mozilla" to server 192.168.1.5 and MSIE to server 192.168.1.6 only?
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I'm getting the following error in my nginx server error log file:

2010/04/16 13:24:16 [crit] 21974#0: *3188937 open() "/usr/local/nginx/html/50x.html" failed (24: Too many open files), client: 88.x.y.z, server: example.com, request: "GET /file/images/background.jpg HTTP/1.1", upstream: "http://10.8.4.227:81//file/images/background.jpg", host: "example.com"

How do I fix this problem under CentOS / RHEL / Fedora Linux or UNIX like operating systems?
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I block or deny access based on the host name or IP address of the client visiting website under nginx web server. I want to display customized e403.html error page, but it doesn't appear to be working. Nginx always displays the built-in, hardcoded "403 Forbidden" error message. Here is my configuration:

.....
  ...
 deny 1.2.3.4;
 deny 91.212.45.0/24;
 deny 91.212.65.0/24;
 .....
 ...
 error_page 403 /e403.html;
        location = /e403.html {
           root   html;
       }

How do I fix this problem and display custom error 403 page under nginx server?
Answer to “Nginx: Custom Error 403 Page Not Working with IP Deny Configuration”

A reverse proxy is a proxy server that is installed in a server network. Typically, reverse proxies are used in front of Web servers such as Apache, IIS, and Lighttpd. How do I setup nginx web server as SSL reverse proxy?
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Handling nginx Failover With KeepAlived

How do configure to release and obtain VIP (virtual IP) when nginx is dead, down or system is rebooted for the kernel upgrades?
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How do I configure nginx as failover reverse proxy load balancer in front of two Apache web servers under CentOS / RHEL 5.x?
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Keepalived provides a strong and robust health checking for LVS clusters. It implements a framework of health checking on multiple layers for server failover, and VRRPv2 stack to handle director failover. How do I install and configure Keepalived for reverse proxy server such as nginx or lighttpd?
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