Nginx upstream prematurely closed connection while reading response header from upstream, for large requests

Question

I am using nginx and node server to serve update requests. I get a gateway timeout when I request an update on large data. I saw this error from the nginx error logs :

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Answer 1

I don't think this is your case, but I'll post it if it helps anyone. I had the same issue and the problem was that Node didn't respond at all (I had a condition that when failed didn't do anything - so no response) - So if increasing all your timeouts didn't solve it, make sure all scenarios get a response.