About ThinkPHP nginx.config configuration on Alibaba Cloud

# For more information on configuration, see:
#  * Official English Documentation: http://nginx.org/en/docs/
#  * Official Russian Documentation: http://nginx.org/ru/docs/
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;
events {
  worker_connections 1024;
}
http {
  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 /var/log/nginx/access.log main;
  sendfile      on;
  tcp_nopush     on;
  tcp_nodelay     on;
  keepalive_timeout  65;
  types_hash_max_size 2048;
  include       /etc/nginx/mime.types;
  default_type    application/octet-stream;
  # Load modular configuration files from the /etc/nginx/conf.d directory.
  # See http://nginx.org/en/docs/ngx_core_module.html#include
  # for more information.
  include /etc/nginx/conf.d/*.conf;
  server {
    listen    80 default_server;
    listen    [::]:80 default_server;
    server_name _;
    root     /usr/share/nginx/html;
    # Load configuration files for the default server block.
    include /etc/nginx/default.d/*.conf;
    location / {
       #try_files $uri $uri/ /index.php;
       root  /usr/share/nginx/html;
       index index.php index.html index.htm;
       if (!-e $request_filename) {  rewrite ^(.*)$ /index.php?s=$1 last;  break;  }
    }      
    # redirect server error pages to the static page /40x.html
    #
    error_page 404       /404.html;     
    location = /40x.html {
    }
    # redirect server error pages to the static page /50x.html
    #
    error_page  500 502 503 504 /50x.html; 
    location = /50x.html {
    }
    location ~ \.php$ {
    root      /usr/share/nginx/html;
    fastcgi_pass  127.0.0.1:9000;
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    include    fastcgi_params;
    }
    location ~ /\.ht {
    deny all;
    }
  }
}