How can I figure out what might be causing the 521 cloudflare error?

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Andrey2019-03-30 04:06:40

cloudflare

Andrey, 2019-03-30 04:06:40

The cloudflare site is getting error 521. According to the description, this is an error when nginx resets the connection. How can you understand what exactly he does not like? In which direction to dig? I don't see any crime in the error logs.

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medvedkina, 2019-03-30
@medvedkina

As CloudFlare himself says, the problem is that 1. Apache or Nzhinks lies. That is, to start checking with this.
2. The web server blocks the request from cloudflare, that is, contact the provider:
https://support.cloudflare.com/hc/en-us/articles/2...