有时候，我们需要单独安装nginx，来处理大量的下载请求。单独在Centos5安装nginx遇到的rewrite和HTTP cache错误解决办法：
wget http://nginx.org/download/nginx-0.8.33.tar.gz
tar -zxvf nginx-0.8.33.tar.gz
cd nginx-0.8.33
./configure –prefix=/usr/local/nginx
安装Nginx时报错
./configure: error: the HTTP rewrite module requires the PCRE library.
安装pcre-devel解决问题
yum -y install pcre-devel
错误提示：./configure: error: the HTTP cache module requires md5 functions
from OpenSSL library. You can either disable the module by using
–without-http-cache option, or install the OpenSSL library into the system,
or build the OpenSSL library statically from the source with nginx by using
–with-http_ssl_module –with-openssl=<path> options.
解决办法：
yum -y install openssl openssl-devel
总结：
yum -y install pcre-devel openssl openssl-devel
./configure –prefix=/usr/local/nginx
make
make install
ok 到这里nginx就安装完成了。启动试试吧，
/usr/local/nginx/sbin/nginx 启动完成。
http://127.0.0.1 试试， welcome Nginx，就安装ok了。
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