查看nginx日志中发现下述报错内容：
2013/01/15 12:15:46 [error] 1707#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: XXX, server: _, request: "GET /phpif.php HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: XXX
解决手法：
/etc/init.d/php-fpm restart 重启php，
必要的时候再重启下service nginx restart
