首先是nginx.conf

vim /etc/nginx/nginx.conf

user  nginx;                      // 设置nginx服务的系统使用用户

worker_processes  1;       // 工作进程数

error_log  /var/log/nginx/error.log warn;  // nginx的错误日志

pid        /var/run/nginx.pid;      // nginx服务启动时候pid

events {                                                      // 事件模块，nginx优势利用epoll内核模型，在这里可以配置使用哪个内核模型

    worker_connections  1024;               // 每个进程允许最大连接数 ，还有个use是工作进程数

}

http {

    include       /etc/nginx/mime.types;  //设置contentType

    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '     // 定义日志类型

                      '$status $body_bytes_sent "$http_referer" '

                      '"$http_user_agent" "$http_x_forwarded_for"';

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

    sendfile        on;

    #tcp_nopush     on;

    keepalive_timeout  65;   // 服务端超时时间

    #gzip  on;

    include /etc/nginx/conf.d/*.conf;      // 读到这个地方是加载另一个默认配置配置文件default.conf

}

default.conf

server {

    listen       80;

    server_name  localhost;

    #charset koi8-r;

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

    location / {

        root   /usr/share/nginx/html;

        index  index.html index.htm;  // 默认加载根路径文件

    }

    #error_page  404              /404.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$ {

    #    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;

"/etc/nginx/conf.d/default.conf" 45L, 1093C  

http可以包含多个http服务，一个server配置一个独立的站点。一个http可以有多个server,一个server可以有多个location匹配资源路径