We have Nginx reverse proxy in the front of Azure Website App Service, built by ASP.net Core program with Kestrel on IIS.
However, only a few people got 502 Bad Gateway error.
Is there anyone engaged similar problem or has solution for this?
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What does your nginx error log say? – Hendrik M Halkow Feb 12 '18 at 11:06
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03:42:59 [error] 116818#116818: *1452587 upstream sent too big header while reading response header from upstream, client: 70.95.92.201, server: xxx, request: "GET /xxxxxxx HTTP/1.1", upstream: " – Tony Mar 20 '18 at 09:29
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Seems the Nginx has still enabled response buffering even we disabled proxy_buffering, so we turned the buffering on again and increased the buffer size. It looks good so far... – Tony Mar 20 '18 at 09:31