ryan4yin edited a comment on issue #4685: URL: https://github.com/apache/apisix/issues/4685#issuecomment-888164938
we have repruduce this using nginx 1.19.3, it's the behavior of nginx upstream & keepalive configs, the 502 is NOT retured by upstrea, it just indicates that nginx failed to read data from upstream, it we found the corresponding log in `error.log`(I mocked some infos): ``` 2021/07/27 13:30:30 [error] 59#59: *34290 upstream prematurely closed connection while reading response header from upstream, client: 172.11.145.126, server: _, request: "GET /eks-test HTTP/1.1", upstream: "http://10.100.154.110:8080/eks-test";, host: "test.xxx" 2021/07/27 13:33:23 [error] 70#70: *74921 upstream prematurely closed connection while reading response header from upstream, client: 172.11.193.70, server: _, request: "GET /eks-test HTTP/1.1", upstream: "http://10.100.154.110:8080/eks-test";, host: "test.xxx" 2021/07/27 13:36:55 [error] 62#62: *130238 upstream prematurely closed connection while reading response header from upstream, client: 172.11.187.255, server: _, request: "GET /eks-test HTTP/1.1", upstream: "http://10.100.154.110:8080/eks-test";, host: "test.xxx" 2021/07/27 13:42:36 [error] 61#61: *221268 upstream prematurely closed connection while reading response header from upstream, client: 172.11.145.126, server: _, request: "GET /eks-test HTTP/1.1", upstream: "http://10.100.154.110:8080/eks-test";, host: "test.xxx" ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
