nginx 配置文件解析(一)

nginx.conf

user              nginx; 

    # nginx服务的运行用户

worker_processes  1;

    # 启动进程数,通常设置成和CPU的数量相等



error_log  /var/log/nginx/error.log;

    # 错误日志,错误级别

#error_log  /var/log/nginx/error.log  notice;

#error_log  /var/log/nginx/error.log  info;

    

pid        /var/run/nginx.pid;

    # pid文件路径



events {

    worker_connections  1024;

}

    # 工作模式及连接数上限

        详情见 events详解





http {

    # 设定http服务器, 详情见http详解

    include       /etc/nginx/mime.types;

        # 设定 mime类型,类型由mime.type文件定义

    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"';

        # 日志格式

    access_log  /var/log/nginx/access.log  main;

        # 访问日志,级别

    sendfile        on;

        # sendfile 指令指定了nginx 是否调用 sendfile函数(zero copy 方式) 来输出文件,

        # 对于普通应用,必须设置为on,如果用来进行下载等应用磁盘IO重负载应用,可设置为off,以平衡磁盘与网络I/O处理速度,降低系统的uptime

    #tcp_nopush     on;



    #keepalive_timeout  0;

    keepalive_timeout  65;

        # 超时时间

    #gzip  on;

        # 启用压缩

    # Load config files from the /etc/nginx/conf.d directory

    # The default server is in conf.d/default.conf

    include /etc/nginx/conf.d/*.conf;

        # 调用其它位置配置文件.

}

default.conf

server {

    # 服务配置项,具体查询server详解

    listen       80 default_server;

        # 监听端口

    server_name  _;

        # 服务名字.

    #charset koi8-r;

        # 字符集

    #access_log  logs/host.access.log  main;

        # 服务自定义的访问日志

    # Load configuration files for the default server block.

    include /etc/nginx/default.d/*.conf;

        # 导入其他位置的配置文件

    location / {

        # 根配置

        root   /usr/share/nginx/html;

            # 根目录的位置

        index  index.html index.htm;

            # 首页直接打开的文件名称从左到右依次搜索

    }



    error_page  404              /404.html;

        # 定义错误提示页面

    location = /404.html {

        root   /usr/share/nginx/html;

    }



    # redirect server error pages to the static page /50x.html

    #

    error_page   500 502 503 504  /50x.html;

    location = /50x.html {

        root   /usr/share/nginx/html;

    }



    # proxy the PHP scripts to Apache listening on 127.0.0.1:80

    #

    #location ~ \.php$ {

    #    proxy_pass   http://127.0.0.1;

    #}



    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000

    #

     location ~ \.php$ {

        # php 文件的配置,fastcgi配置

         root           html;

         fastcgi_pass   127.0.0.1:9000;

         fastcgi_index  index.php;

         fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;

         include        fastcgi_params;

     }



    # deny access to .htaccess files, if Apache's document root

    # concurs with nginx's one

    #

    #location ~ /\.ht {

    #    deny  all;

    #}

}