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	一、拓扑 
	  
	 
	  
	二、安装软件 
	wget http://nginx.org/download/nginx-1.0.11.tar.gzwget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.21.tar.gz
 
	      1、安装pcre 
	            tar zxvf pcre-8.21.tar.gzcd pcre-8.21
 ./configure
 make && make install
 
	      2、安装nginx 
	            tar zxvf nginx-1.0.11.tar.gzcd nginx-1.0.11
 useradd -s /sbin/nologin www
 ./configure --user=www --group=www --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module
 make
 make install
 
	三、配置nginx 
	          cd /usr/local/nginx/cp nginx.conf nginx.conf.bak
 
	          vi nginx.conf###############################################################################
 user www www;
 worker_processes 1;
 error_log   /usr/local/nginx/logs/nginx_error.log crit;
 pid        /usr/local/nginx/nginx.pid;
 worker_rlimit_nofile 51200;
 ##############################################################################
 events{
 use epoll;
 worker_connections 51200;
 }
 ##############################################################################
 http{
 include       mime.types;
 default_type  application/octet-stream;
 sendfile on;
 tcp_nopush on;
 keepalive_timeout 60;
 tcp_nodelay on;
 
	##############################################################################upstream   192.168.1.250 {
 server 192.168.1.251;
 server 192.168.1.252;
 }
 ##############################################################################
 server
 {
 listen 80;
 server_name www.test.com *.test.com;
 
	        location / {proxy_pass        http://192.168.1.250;
 
	                       proxy_set_header   Host             $host; 
	                       proxy_set_header   X-Real-IP        $remote_addr; 
	                       proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;}
 location /nginx_status {
 stub_status on;
 access_log off;
 allow 192.168.1.253;
 deny all;
 }
 
	###############################################################################log_format www_test_com  '$remote_addr - $remote_user [$time_local] $request '
 
	                        '"$status" $body_bytes_sent "$http_referer" ' 
	                        '"$http_user_agent" "$http_x_forwarded_for"';access_log  /usr/local/nginx/logs/nginx.log  www_test_com;
 
 }
 
	}################################################################################
 
	四、测试配置是否正常 
	     [root@linux-1 conf]# /usr/local/nginx/sbin/nginx -tnginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
 nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
 
	############################以上说明配置正确###################   
	五、启动和停止nginx负载均衡器 
	             启动: 
	              ulimit -SHn 51200/usr/local/nginx/sbin/nginx
 
	              停止: 
	              killall -9 nginx    ####注意nginx可以写脚本形式让它启动停止 
	六、测试 
	      web1-------->ip:192.168.1.251------------>index.html------------->the is web1 
	       web2-------->ip:192.168.1.252------------>index.html------------->the is web2 
	       测试结果: 
	  
	 
	  
	 
	  
	七、简单的使用监控模块(没有像LVS的ipvsadm强大,只是简单的查看而已) 
	http://192.168.1.250/nginx_status 
	  
	 
	##########################到些简单的负载配置完成####################### 
	  
	八、简单讲解配置文件(讲解有错误请指教): 
	       worker_processes 1;  ###一般配置跟CPU的数量一样error_log   /usr/local/nginx/logs/nginx_error.log crit;###nginx错误日志使用
 
	       use epoll;###epoll模式worker_connections 51200; ###每个进程最大连接数51200个
 
	     upstream   192.168.1.250 {server 192.168.1.251;
 server 192.168.1.252;
 } ###############这个就是负载了,下面的就是后端的源服务器
 
	     location / {proxy_pass        http://192.168.1.250;
 
	                       proxy_set_header   Host             $host; 
	                       proxy_set_header   X-Real-IP        $remote_addr; 
	                       proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;}##########后端源Web服务器通过X-Forwarded-For获取用户真实IP地址
 
	location /nginx_status {stub_status on;
 access_log off;
 allow 192.168.1.253;
 deny all;
 }############这个就是简单监控nginx的状态
 
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