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domain	0517bbs.com
summary	Here's a summary of the content related to a "502 Bad Gateway nginx" error: A 502 Bad Gateway error indicates that a server acting as a gateway or proxy received an invalid response from another server upstream. Essentially, the website you're trying to access is communicating with another server (often the one hosting the main website files) and that second server is failing to respond correctly or at all. This can be caused by a variety of issues on the upstream server, including server overload, network problems, software errors, or temporary outages. The "nginx" part of the error signifies that Nginx, a popular web server and reverse proxy, is the component responsible for mediating the request and is encountering the problem. Troubleshooting often involves checking the status of the upstream server, verifying network connectivity, and ensuring Nginx itself is running correctly.
title	502 Bad Gateway
description	502 Bad Gateway
keywords	gateway
upstreams
downstreams
nslookup	A 156.244.169.199
created	2026-02-16
updated	2026-02-16
summarized	2026-02-17