The proxy server received an invalid response from an upstream server.

经过排查发现是容器异常重启，造成的系统502响应；

具体重启原因：Back-off restarting failed container

The proxy server received an invalid response from an upstream server_公众号

阿里云 nas异常造成的；

The proxy server received an invalid response from an upstream server_重启_02

提交工单后的反馈：

您好,您先查看下实时日志呢
https://help.aliyun.com/document_detail/96907.html?spm=a2c4g.11186623.0.0.3bc7452f4o1C0A

https://sae.console.aliyun.com/

客服反馈说：nas异常，出错率不高， 后期继续监控即可；出现问题再次反馈；

参考其他的解决方案：https://cloud.tencent.com/developer/article/1931089



作者：刘俊涛的博客