编译Nginx支持Socket

1. 下载nginx tar包，nginx-1.16.1.tar.gz
2. 服务器上执行如下命令，编译生成nginx可执行文件

   yum install -y pcre pcre-devel
   yum install -y zlib zlib-devel
   yum install -y openssl openssl-devel
   
   tar xvf nginx-1.16.1.tar.gz
   mkdir -p /export/servers/nginx
   cd nginx-1.16.1
   ./configure --prefix=/export/servers/nginx --with-stream
   make
   

3. 用生成的nginx可执行文件替换系统中的nginx可执行文件，重启nginx