最近error.log发现如下错误:
upstream sent no valid HTTP/1.0 header while reading response header from upstream
而,access的http status是很特别的009:
"GET /ap1/v1 HTTP/2.0" 009
http status 009
http://nginx.org/en/CHANGES-1.2
same 009 error info:
Installation issue - blank page - nginx upstream error