Nginx 使用异步事件驱动模型。
1,测试配置文件是否正确
/usr/loca/nginx/nginx -t
2,结束主进程,平滑重启
kill -HUP `cat /usr/local/nginx/nginx.pid`
http://www.ha97.com/5194.html
http://wiki.nginx.org/NginxChs
http://pureage.info/2014/02/22/host-variable-in-nginx.html
http://www.wangfeilong.cn/record/201401
http://wiki.nginx.org/PHPFcgiExample
http://huoding.com/2013/10/23/290
http://blog.martinfjordvald.com/2012/08/understanding-the-nginx-configuration-inheritance-model/
http://ixdba.blog.51cto.com/2895551/806622