修改nginx配置文件:

user    www www;
worker_processes 1;
error_log    /usr/local/nginx/logs/nginx_error.log    crit;
pid                /usr/local/nginx/logs/nginx.pid;  //nginx进程id
worker_rlimit_nofile 51200;//文件最大连接数,系统限定文件ulimit对服务也会有影响,使用ulimit -n可以设置,也可以修改/etc/security/limits.conf
events
{
         use epoll;//高效模式
         worker_connections 51200;   
}
http
{
         include             mime.types; //配置文件模块
         default_type    application/octet-stream;  //核心配置文件模块
         source_charset GB2312;   //字符集GB2312
         server_names_hash_bucket_size 256;  
         client_header_buffer_size 256k;
         large_client_header_buffers 4 256k;
         #size limits
         client_max_body_size             50m;
         client_body_buffer_size        256k;
         client_header_timeout     3m;
         client_body_timeout 3m;
         send_timeout             3m;    
         sendfile on;
         tcp_nopush         on;
         keepalive_timeout 120; 
         tcp_nodelay on;
        
     upstream www.dragon.com {
                server 192.168.1.116:80 weight=8 max_fails=2 fail_timeout=30s; 
                server 192.168.1.115:80 weight=8 max_fails=2 fail_timeout=30s;
             }
//根据weight权重指定分配轮询,达到负载均衡。
      server
     {
            listen             80;
            server_name    bbs.linuxtone.conf;
            charset GB2312;
            index index.html index.htm;
            root    /date/wwwroot/linuxtone/;
                location ~ ^/NginxStatus/ {
                        stub_status on;
                        access_log off;
                 }
         location / {
            
             proxy_redirect off ; // 如果需要从后端打开location 和Refresh 字段,可以开启。 
             proxy_set_header Host $host;
             proxy_set_header X-Real-IP $remote_addr;
             proxy_set_header REMOTE-HOST $remote_addr;
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
             client_max_body_size 50m;
             client_body_buffer_size 256k;
             proxy_connect_timeout 30;    //连接超时时间30s
             proxy_send_timeout 30;
             proxy_read_timeout 60; // 连接成功等待后端响应的时间,默认是60S 
             proxy_buffer_size 256k;  // 代理服务器的缓存文件头部文件大小,默认是4K 
             proxy_buffers 4 256k; // 同上,使用buffer数量和大小 
             proxy_busy_buffers_size 256k; // 当服务繁忙时,申请更大proxy_buffer 
             proxy_temp_file_write_size 256k; // 写入临时目录的文件大小 
             proxy_next_upstream error timeout invalid_header http_500 http_503 http_404;             //如果出现500,503,404,就把请求调度到另一real server
             proxy_max_temp_file_size 128m;
             proxy_pass    //把请求域名"www.dragon.com"转发给upstream定义的群组"www.dragon.com"
            }
}
}


域名被分配到不同ip的服务器上解析。

nginx反向代理及简单负载均衡_nginx

nginx反向代理及简单负载均衡_nginx_02




本文转自:维斯亚综合论坛:http://www.w4ya.com/forum.php?mod=post&action=edit&fid=53&tid=104&pid=104&page=1