nginx error.log报错：
[error] 10773#0: *272212065 recv() failed (104: Connection reset by peer) while reading response header from upstream
中文解释：
recv()失败(104:由对等点连接重置)同时从上游读取响应消息头
解决方法：
修改php-fpm.conf
解开注释
request_terminate_timeout = 0