详解nginx.conf文件配置项(包括负载均衡)

http://www.cnblogs.com/hsapphire/archive/2010/04/08/1707109.html

#运行用户
user  nobody nobody;
#启动进程
worker_processes  2;
#全局错误日志及PID文件
error_log  logs/error.log notice;
pid        logs/nginx.pid;
#工作模式及连接数上限
events {
        use epoll;
        worker_connections      1024;
}
#设定http服务器,利用它的反向代理功能提供负载均衡支持
http {
        #设定mime类型
        include       conf/mime.types;
        default_type  application/octet-stream;
        #设定日志格式
        log_format main         '$remote_addr - $remote_user [$time_local] '
                                                '"$request" $status $bytes_sent '
                                                '"$http_referer" "$http_user_agent" '
                                                '"$gzip_ratio"';
        log_format download '$remote_addr - $remote_user [$time_local] '
                                                '"$request" $status $bytes_sent '
                                                '"$http_referer" "$http_user_agent" '
                                                '"$http_range" "$sent_http_content_range"';
        #设定请求缓冲
        client_header_buffer_size    1k;
        large_client_header_buffers  4 4k;
        #开启gzip模块
        gzip on;
        gzip_min_length  1100;
        gzip_buffers     4 8k;
        gzip_types       text/plain;
        output_buffers   1 32k;
        postpone_output  1460;
        #设定access log
        access_log  logs/access.log  main;
        client_header_timeout  3m;
        client_body_timeout    3m;
        send_timeout           3m;
        sendfile                on;
        tcp_nopush              on;
        tcp_nodelay             on;
        keepalive_timeout  65;
        #设定负载均衡的服务器列表
        upstream mysvr {
                #weigth参数表示权值,权值越高被分配到的几率越大
                #本机上的Squid开启3128端口
                server 192.168.8.1:3128 weight=5;
                server 192.168.8.2:80   weight=1;
                server 192.168.8.3:80   weight=6;
        }
        #设定虚拟主机
        server {
                listen          80;
                server_name     192.168.8.1 www.yejr.com;
                charset gb2312;
                #设定本虚拟主机的访问日志
                access_log  logs/www.yejr.com.access.log  main;
                #如果访问 /img/*, /js/*, /css/* 资源,则直接取本地文件,不通过squid
                #如果这些文件较多,不推荐这种方式,因为通过squid的缓存效果更好
                location ~ ^/(img|js|css)/  {
                        root    /data3/Html;
                        expires 24h;
                }
                #对 "/" 启用负载均衡
                location / {
                        proxy_pass      http://mysvr;
                        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;
                        proxy_connect_timeout   90;
                        proxy_send_timeout      90;
                        proxy_read_timeout      90;
                        proxy_buffer_size       4k;
                        proxy_buffers           4 32k;
                        proxy_busy_buffers_size 64k;
                        proxy_temp_file_write_size 64k;
                }
                #设定查看Nginx状态的地址
                location /NginxStatus {
                        stub_status             on;
                        access_log              on;
                        auth_basic              "NginxStatus";
                        auth_basic_user_file  conf/htpasswd;
                }
        }
}
运行以下命令检测配置文件是否无误:
  如果没有报错,那么就可以开始运行Nginx了,执行以下命令即可:
  备注:conf/htpasswd 文件的内容用 apache 提供的 htpasswd 工具来产生即可,内容大致如下:
  3.) 查看 Nginx 运行状态
  输入地址 http://192.168.8.1/NginxStatus/,输入验证帐号密码,即可看到类似如下内容:
Active connections: 291
server accepts handled requests
16630948 16630948 31070465
Reading: 6 Writing: 179 Waiting: 106active connections -- 对后端发起的活动连接数
server
accepts handled requests -- nginx 总共处理了 16630948 个连接, 成功创建 16630948 次握手
(证明中间没有失败的), 总共处理了 31070465 个请求 (平均每次握手处理了 1.8个数据请求)
reading -- nginx 读取到客户端的Header信息数
writing -- nginx 返回给客户端的Header信息数
waiting -- 开启 keep-alive 的情况下,这个值等于 active - (reading + writing),意思就是Nginx说已经处理完正在等候下一次请求指令的驻留连接

上一篇:一个简单爬免费代理IP的脚本


下一篇:MySQL 5.7.18的安装与主从复制(转自:https://www.baidu.com/home/news/data/newspage?nid=9485770887287731252&n_typ)