Nginx: 504 Gateway Time-out: upstream timed out (110: Connection timed out)

Colleagues reported a fail when doing reporting.

Got the error - "504 Gateway Time-out".

From the logs, identified:

2022/01/07 17:43:26 [error] 15608#15608: *410044 upstream timed out (110: Connection timed out) while reading response header from upstream, client: A.B.C.D, server: domain.hk, request: "POST /report/monthlyReport HTTP/2.0", upstream: "http://127.0.0.1:8080/report/monthlyReport", host: "domain.hk", referrer: "https://domain.hk/report/monthlyReport"

Required to edit  /etc/nginx/sites-enabled/domain.hk .

From 300s to 600s:

proxy_read_timeout 600s;

Update