官网下载nginx：http://nginx.org/en/download.html
设置安装路径
#./configure --prefix=/usr/local/nginx
编译安装
#make && make install
安装Nginx报错：
一、./configure: error: the HTTP rewrite module requires the PCRE library.
安装pcre-devel解决问题：
yum -y install pcre-devel
二、./configure: error: the HTTP gzip module requires the zlib library.
安装zlib-devel解决问题：
yum -y install zlib-devel
三、./configure: error: the HTTP cache module requires md5 functions from OpenSSL library.
安装openssl openssl-devel解决问题：
yum -y install openssl openssl-devel
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