nginx

site: http://www.nginx.com/prod.html

wiki: http://wiki.nginx.org/NginxChsHttpProxyModule

Install: http://wiki.nginx.org/Install

Articals:

http://www.cyberciti.biz/faq/rhel-linux-install-nginx-as-reverse-proxy-load-balancer/

http://www.ubuntugeek.com/using-nginx-as-a-reverse-proxy-to-get-the-most-out-of-your-vps.html

http://www.kutukupret.com/2011/05/11/nginx-reverse-proxying-multiple-domains-using-map-module/ (Map module)

 

在centos 5.x 和centos 6下的安装： 

正常情况下，直接运行： yum install nginxj即可， 但是如果提示nginx package不存在，则先创建/etc/yum.repos.d/nginx.repo 文件

内容如下：

[nginx]
name=nginx repo
baseurl=http://nginx.org/packages/OS/OSRELEASE/$basearch/
gpgcheck=0
enabled=1

注意：Replace “OS” with “rhel” or “centos”, depending on the distribution used, and “OSRELEASE” with “5” or “6”, for 5.x or 6.x versions, 

保存后，再次运行 yum install nginx即可。

 

配置：/etc/nginx/nginx.conf

user nginx; #默认用户
worker_processes  2;
error_log  /var/log/nginx/error.log;
pid        /var/run/nginx.pid;
events {
    worker_connections  1024;
}
http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;
    access_log /var/log/nginx/access.log;
    server_names_hash_bucket_size 64;
    sendfile        on;
    tcp_nopush     on;
    #keepalive_timeout  0;
    keepalive_timeout  65;
    tcp_nodelay        on;
	gzip              off; # you should enable gzip within site
    #gzip_comp_level   5;
    #gzip_http_version 1.0;
    #gzip_min_length   0;
    #gzip_types        text/plain text/html text/css image/x-icon application/x-javascript;
    $gzip_vary         on;
    include /etc/nginx/conf.d/*.conf; #自动加载所有的配置文件
    include /etc/nginx/sites-enabled/*; #自动加载所有的站点配置文件
}

 

配置/etc/nginx/conf.d/proxy.conf

proxy_redirect          off;
proxy_set_header        Host            $host;
proxy_set_header        X-Real-IP       $remote_addr;
proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
client_max_body_size    10m;
client_body_buffer_size 128k;
client_header_buffer_size 64k;
proxy_connect_timeout   90;
proxy_send_timeout      90;
proxy_read_timeout      90;
proxy_buffer_size   256k;
proxy_buffers       32   16k;
proxy_busy_buffers_size 256k;

 

泛域名站点文件配置： (假定domain是：abc.com)

例子： 配置*.testing.abc.com 全部转向到*.dev.abc.com

配置文件：/etc/nginx/sites-enabled/testing.ab.com

内容如下：（里面的abc.com 根据你自己的情况进行替换）

server {
 listen 80;
 server_name *.testing.abc.com;
 if ( $host ~* (.*).testing.abc.com) {
	    set $sitename $1;
	}
 
 resolver 8.8.8.8; #因为我们自己没有配置dns，所以直接用google的dns

 access_log /var/log/nginx/$sitename.testing.abc.com-nginx.access.log;
 error_log /var/log/nginx/$sitename.testing.abc.com-nginx.error.log;
 index index.html;

 location / {
   proxy_pass  http://$sitename.dev.abc.com;
 }
 
  error_page 500 502 503 504 /50x.html;
 location = /50x.html {
  root /var/www;
 }

}

　　

非泛域名配置：

内容如下：

server {
 listen   80;
 server_name  abc.com www.abc.com *.abc.com;
 access_log  /var/log/nginx/abc.com-nginx.access.log;
 error_log  /var/log/nginx/abc.com-nginx_error.log debug;

#redirect all non-www to www
 if ($host !~ 'www.abc.com' ) {
     rewrite  ^/(.*)$  http://www.abc.com/$1  permanent; 
 }

 #set your default location
 location / {
  proxy_pass         http://www.anotherdomain.com;
 }
 
 #error_page  404  /404.html;
  # redirect server error pages to the static page /50x.html
 #
 error_page   500 502 503 504  /50x.html;
 location = /50x.html {
  root   /var/www;
 }
}

 

小插曲，因为服务器上已经默认安装了apache，导致nginx无法启动。 你可以使用lsof -i tcp:80 看看哪些程序占用了80端口.

[root@271334 ~]# lsof -i tcp:80
COMMAND  PID   USER   FD   TYPE     DEVICE SIZE/OFF NODE NAME
httpd   1465   root    3u  IPv4 4095368955      0t0  TCP *:http (LISTEN)
httpd   1466 apache    3u  IPv4 4095368955      0t0  TCP *:http (LISTEN)
httpd   1481 apache    3u  IPv4 4095368955      0t0  TCP *:http (LISTEN)
httpd   1752 apache    3u  IPv4 4095368955      0t0  TCP *:http (LISTEN)
httpd   4046 apache    3u  IPv4 4095368955      0t0  TCP *:http (LISTEN)
[root@271334 ~]# yum remove httpd
Loaded plugins: fastestmirror
Setting up Remove Process
Resolving Dependencies
--> Running transaction check
---> Package httpd.i686 0:2.2.15-5.el6.centos set to be erased
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package       Arch         Version                     Repository         Size
================================================================================
Removing:
 httpd         i686         2.2.15-5.el6.centos         installed         2.8 M

Transaction Summary
================================================================================
Remove        1 Package(s)
Reinstall     0 Package(s)
Downgrade     0 Package(s)

Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Erasing        : httpd-2.2.15-5.el6.centos.i686                           1/1
warning: /etc/httpd/conf/httpd.conf saved as /etc/httpd/conf/httpd.conf.rpmsave

Removed:
  httpd.i686 0:2.2.15-5.el6.centos

Complete!
[root@271334 ~]#

　　

 

 

创建/var/www目录和默认的index.html和50x.html文件.

index.html内容如下：

<html>
<head>
<title>Welcome to nginx!</title>
</head>
<body bgcolor="white" text="black">
<center><h1>Welcome to nginx!</h1></center>
</body>
</html>

50x.html内容如下：

<html>
<head>
<title>The page is temporarily unavailable</title>
<style>
body { font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body bgcolor="white" text="black">
<table width="100%" height="100%">
<tr>
<td align="center" valign="middle">
The page you are looking for is temporarily unavailable.<br/>
Please try again later.
</td>
</tr>
</table>
</body>
</html>

　　

记得每次在更改配置文件，要重启nginx

/etc/init.d/nginx restart

 

enjoy with nginx. :)