Notes: nginx configuration file

#user  nobody;
worker_processes  1;                                    <- worker进程的数量，为了避免上下文切换，通常设置为cpu总核数-1或等于总核数

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

#pid        logs/nginx.pid;


events {                                                <- 事件区块开始
    worker_connections  1024;                           <- 每一个worker进程支持的最大连接数(相当于一个服务员能服务多少个客人)
}


http {                                                  <- HTTP区块开始
    include       mime.types;                           <- Nginx支持的媒体类型库文件
    default_type  application/octet-stream;             <- 默认的媒体类型

    #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;                                 <- 开启高效传输模式
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;                              <- 连接超时

    #gzip  on;

    server {                                            <- 第一个Server区块开始，表示一个独立的虚拟机站点
        listen       80;                                <- 提供服务的端口，默认为80(响应请求的端口)
        server_name  localhost;                         <- 提供服务的域名主机名

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {                                    <- 第一个location区块开始
            root   html;                                <- 站点的根目录，相当于Nginx的安装目录
            index  index.html index.htm;                <- 默认的首页文件，多个用空格分开
        }                                               <- 第一个location区块结束

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;        <- 出现对应的http状态码时，使用50x.html回应客户
        location = /50x.html {                          <- location区块开始，访问50x.html
            root   html;                                <- 指定对应的站点目录为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 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;				<- 证书文件
    #    ssl_certificate_key  cert.key;				<- 私钥文件

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

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

}                                                       <- HTTP区块结束

The role of the server module (each server must have a location):
1. Similar to waiters waiting to receive guests at the door, there are multiple servers, there are multiple waiters; configure service monitoring information
2. According to the host information, confirm that it is Which waiter receives the guests, according to the waiter's arrangement of the guests' whereabouts
3. Finally, hand it over to the location waiter for processing

The function of the location module:
1. Find UR information
2. Specify where to find it.
3. If there is a specified information, it corresponds to the specified information. If there is no specified information, it will respond to index.html by default.

location ~ .php$ {
root html;
fastcgi_pass 127.0.0.1:9000; //定义反向代理
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
include fastcgi_params;
}

Note: When the LNMP architecture is deployed on separate platforms, "/scripts" needs to be replaced with the php directory