Nginx服务器常用配置参数

#使用哪个用户启动nginx

user  frankwong;

#nginx 工作进程数，一般设置成CPU核数

worker_processes  4;

# [ debug | info | notice | warn | error | crit ]   错误日志的位置

#error_log  logs/error.log;

#error_log  logs/error.log  notice;

#error_log  logs/error.log  info;

#nginx进程号保存文件

#pid        logs/nginx.pid;

events {

    #use [ kqueue | rtsig | epoll | /dev/poll | select | poll ] 使用epoll（linux2.6的高性能方式）

    use epoll;

    #每个worker最大连接数，受限于进程最大打开文件数目，参考ulimit -n

    worker_connections  1024;

}

http {

     #文件扩展名与文件类型映射表

    include       mime.types;

    #默认文件类型 bin exe dll

    default_type  application/octet-stream;

    #日志文件格式

    #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;

    #开启高效文件传输模式

    sendfile        on;

    #防止网络阻塞

    #tcp_nopush     on;

    #长链接超时时间

    #keepalive_timeout  0;

    keepalive_timeout  65;

    #gzip  on;

    #上传文件大小限制

    client_max_body_size 20m

    #设定请求缓冲  

    client_header_buffer_size 1k;  

    large_client_header_buffers 4 4k;

    server {

        #监听端口号

        listen       80;

        #配置基于名称的虚拟主机，通过它可以进行多域名转发

        server_name  localhost;

        #默认编码

        charset utf-8;

        #设定本虚拟主机的访问日志

        #access_log  logs/host.access.log  main;

        location / {

            root   html;

            index  index.html index.htm;

        }

        #错误页面

        error_page  404              /404.html;

        error_page   500 502 503 504  /50x.html;

        location = /50x.html {

            root   html;

        } 

    }

}

gzip            on;

gzip_min_length 1k;//只压缩大于1K的文件

gzip_buffers 4 16k;

#gzip_http_version 1.0;//默认1.1

gzip_comp_level 2;//压缩级别，1-10，数字越大压缩的越好，时间也越长

gzip_min_length     1000;

gzip_types      text/plain text/css application/x-javascript;

gzip_vary off;//Squid等缓存服务有关，on的话会在Header里增加"Vary: Accept-Encoding"

gzip_disable "MSIE [1-6]."; //取消对IE6的支持

location ~ ^/NginxStatus {

           stub_status on;//开启状态查看

           access_log off;//关闭日志

           allow   127.0.0.1;//设置仅能本机查看

           deny    all;

}

Active connections: 328  

server accepts handled requests  

9309 8982 28890  

Reading: 1 Writing: 3 Waiting: 324

location ~ .(htm|html|gif|jpg|jpeg|png|ico|rar|css|js|zip|txt|flv|swf|doc|ppt|xls|pdf)$ {

           root  /opt/webapp/cache;//静态资源路径

           access_log off;

           expires 24h;//cache有效时间 这边设置成1天

}

location ~ .*.(gif|jpg|jpeg|png|bmp|swf)${

       expires      30d;

       valid_referers none blocked dropbag.sinaapp.com*;

       if ($invalid_referer) {

       rewrite ^/ http://gitsea.com/404.html;#return 404;

       }

}

1

/usr/local/nginx/sbin/nginx -t

the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok

the configuration file /usr/local/nginx/conf/nginx.conf was tested successfully

#nginx日志切割脚本

#!/bin/bash

#设置日志文件存放目录

logs_path="/usr/local/nginx/logs/"

#设置pid文件

pid_path="/usr/local/nginx/nginx.pid"

#重命名日志文件

mv ${logs_path}access.log ${logs_path}access_$(date -d "yesterday" +"%Y%m%d").log

#向nginx主进程发信号重新打开日志

kill -USR1 `cat ${pid_path}`

upstream tomcatserver{  

#weigth参数表示权值，权值越高被分配到的几率越大   

server 192.168.1.101:8080  weight=5;  

server 192.168.1.102:8080  weight=1;  

server 192.168.1.103:8080  weight=6;  

}

#对 "/" 启用负载均衡  

location / {  

proxy_pass http://tomcatserver;  

proxy_redirect          off;

proxy_set_header        Host $host;

proxy_set_header        X-Real-IP $remote_addr;//通过X-Forwarded-For获取用户真实IP

proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;

client_max_body_size    10m;//允许客户端请求的最大单文件字节数

client_body_buffer_size 128k;//缓冲区代理缓冲用户端请求的最大字节数

proxy_connect_timeout   300;//nginx跟后端服务器连接超时时间(代理连接超时)

proxy_send_timeout      300;//后端服务器数据回传时间(代理发送超时)

proxy_read_timeout      300;//连接成功后，后端服务器响应时间(代理接收超时)

proxy_buffer_size       4k;//设置代理服务器（nginx）保存用户头信息的缓冲区大小

proxy_buffers           4 32k;

proxy_busy_buffers_size 64k;//高负荷下缓冲大小

proxy_temp_file_write_size 64k;//设定缓存文件夹大小，大于这个值，将从upstream服务器传

}

worker_connections

Syntax: worker_connections number

Default:

The worker_connections and worker_proceses from the main section allows you to calculate maxclients value:

max_clients = worker_processes * worker_connections

In a reverse proxy situation, max_clients becomes

max_clients = worker_processes * worker_connections/4

Since a browser opens 2 connections by default to a server ,and nginx uses the fds (file descriptors) from the same pool to connect to the upstream backend .