nginx 均衡负载配置

nginx详细配置介绍: 

参考资料：http://blog.csdn.net/xmtblog/article/details/42295181

配置实例：

// nginx服务器虚拟为代理服务器和web服务器
#user  nobody;	
worker_processes 4 ;	//一般和CPU核相等

#pid        logs/nginx.pid;

events {

    worker_connections 1024 ;	//最大连接数
}

http {
    include       mime.types;	//服务器能识别的文件类型
    default_type  application/octet-stream;
    sendfile        on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

   upstream myServer{	//设置服务器集群

	server 192.168.1.251:80 weight=1;　　//设置服务器，和访问权重
	server 192.168.1.252:8080 weight=1;		
}	
	
    server {	//设置反向代理服务器，监听端口为80
        listen       80;
        server_name www.myproxy.com ;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;
	
	root /phpstudy/wwww;   		
        location /{      

	#   index  index.html index.htm index.php
	    proxy_pass http://myServer; 	//指定反向代理的服务器集群  		
        }

        #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   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        location ~ .php$ {		//rewrite URL 正则表达 若url地址以.php结尾，则执行下面代码
            proxy_pass   http://myServer;
	#	proxy_set_header X_Real_IP $remote_addr;
	#	proxy_set_header X-Host $host;
		
        }
    }

server{	//设置web服务器，监听端口为8080,
	listen 8080;
	server_name www.centos2.com;
	root /phpstudy/www;
	location / {
		
		index  index.php index.htm index.html ;
	}
	#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   html;
        }

      location ~ .php(.*)$ {	//若遇到以php结尾的文件就交个9000端口的 fastcgi执行php代码
            fastcgi_pass   127.0.0.1:9000;
            fastcgi_index  index.php;
            fastcgi_split_path_info  ^((?U).+.php)(/?.+)$;
            fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
            fastcgi_param  PATH_INFO  $fastcgi_path_info;
            fastcgi_param  PATH_TRANSLATED  $document_root$fastcgi_path_info;
            include        fastcgi_params;
        } 
}

include /phpstudy/server/nginx/conf/vhosts/*.conf;
}

注意：http下的server模块是设置虚拟服务器的，不同于upstream下的server模块，另外作为web服务器要对php文件执行，必须要指定提交给fastcgi解析，

否则浏览器无法识别将提示下午。