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502 Bad Gateway : connect() failed (111: Unknown error) while connecting to upstream
I have a MERN stack app and it always worked like charm until this morning when we suddenly got a 502 Bad Gateway(without touching anything). I’ve seen another Post on here which is resolved but any of the steps in that post didn’t help me anything at all.
Not sure, how can I find out?
Operating system: Ubuntu 18.04
To work again like before
A 502 Bad Gateway
Error log from /var/log/nginx/error.log looks like this
2021/09/23 16:34:25 [error] 23460#23460: *11 connect() failed (111: Unknown error) while connecting to upstream, client: x.x.x.x, server: , request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:5000/favicon.ico", host: "x.x.x.x"
Would appreciate your help,
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