Nginx-nginx.conf解读

#是注释，不生效的内容

user  nobody

nginx启动的时候用什么用户

events

是事件驱动模块

worker_processes

工作进程的个数，一个cpu内核对应一个worker_processes

 worker_connections  1024;

每个worker进程默认创建1024个连接

include       mime.types;

mime.types记录了请求头返回或者发送的文件是什么类型的，比如文本文档或者html文档，可执行应用程序，flush文件，由服务端向客户端浏览器发送一个头来明确告诉他自己发送的是什么文件。

 sendfile        on;

数据0拷贝（应用程序不加载磁盘文件），减少数据调度过程

keepalive_timeout  65;

保持连接超时的时间

server 就是一个虚拟主机，可以配置多个虚拟主机，每个主机互相不干扰，可以通过端口号的方式区分每个主机的不同
server_name可以配置域名或主机名
location是uri（资源）或者uri的一部分，通过这个找root目录
root是当前目录匹配上location后从哪个目录找网页
html是相对nginx程序主目录如/usr/local/nginx/html

error_page   500 502 503 504  /50x.html;

发生服务器端错误时跳转到当前站点的50x.html

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    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"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   html;
            index  index.html index.htm;
        }

        #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   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;
        #}
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443;
    #    server_name  localhost;

    #    ssl                  on;
    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_timeout  5m;

    #    ssl_protocols  SSLv2 SSLv3 TLSv1;
    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers   on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}