对于centos（linux）下使用nginx的总结

1. 安装nginx
  执行yum install nginx
1. 查看nginx的文件
  执行 rpm -ql nginx
1. 常用的配置和文件有
  nginx/conf.d/default.conf
  nginx/nginx.conf (下面的配置都是在此文件)
1. nginx启动
  执行nginx或执行systemctl start nginx.service
  检查是否启动成功执行ps aux | grep nginx；成功一般有3条记录
1. nginx停止
  立即：nginx -s stop
  从容：nginx -s quit
6.nginx重启/重载
执行systemctl restart nginx.service
重载 nginx -s reload
7.访问控制

 location / {
        deny   123.9.51.42;
        allow  232,123,123,2;
    }
=号代表精确匹配
location =/img{
        allow all;
    }
正则匹配
location ~\.php$ {
        deny all;
    }

配置虚拟主机
虚拟主机就是可以在服务器上配置多个域名；一般通过设置端口号来实现；

server{
        listen 8001;
        server_name localhost;
        root /usr/share/nginx/html/html8001;
        index index.html;
}

反向代理

server{
        listen 80;
        server_name test12.com;
        location / {
               proxy_pass http://test34.com;
        }
}

nginx判断移动和pc

server{
        listen 80;
        server_name test.com;
        location / {
         root /usr/share/nginx/pc;
         if ($http_user_agent ~* '(Android|webOS|iPhone|iPod|BlackBerry)') {
            root /usr/share/nginx/mobile;
         }
         index index.html;
        }
}

nginx 开启gzip压缩

http {
   .....
    gzip on;
    gzip_types text/plain application/javascript text/css;
   .....
}

nginx 配置跨域

location /apis { #添加访问目录为/apis的代理配置
            rewrite  ^/apis/(.*)$ /$1 break;
            proxy_pass   http://localhost:82;
 }