nginx负载均衡

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile  	on;
    tcp_nopush 	on;
	tcp_nodelay on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;
	
	#FastCGI相关参数是为了改善网站的性能：减少资源占用，提高访问速度。下面参数看字面意思都能理解。
	fastcgi_connect_timeout 300;
	fastcgi_send_timeout 300;
	fastcgi_read_timeout 300;
	fastcgi_buffer_size 64k;
	fastcgi_buffers 4 64k;
	fastcgi_busy_buffers_size 128k;
	fastcgi_temp_file_write_size 128k;
	
	#gzip模块设置
	gzip on; #开启gzip压缩输出
	gzip_min_length 1k; #最小压缩文件大小
	gzip_buffers 4 16k; #压缩缓冲区
	gzip_http_version 1.0; #压缩版本（默认1.1，前端如果是squid2.5请使用1.0）
	gzip_comp_level 2; #压缩等级
	gzip_types text/plain application/x-javascript text/css application/xml;
	#压缩类型，默认就已经包含text/html，所以下面就不用再写了，写上去也不会有问题，但是会有一个warn。
	gzip_vary on;
	
	upstream test {
		#upstream的负载均衡，weight是权重，可以根据机器配置定义权重。weigth参数表示权值，权值越高被分配到的几率越大。
		server 127.0.0.1:8080 weight=3;
		server 127.0.0.1:8081 weight=2;
		server 127.0.0.1:8082 weight=3;
	}
	
	server {
        listen       80;
        server_name  127.0.0.1;

        location / {
            proxy_pass http://test;
            proxy_set_header   Host    $host;
            proxy_set_header   X-Real-IP   $remote_addr;
            proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
		
		
    }

}