hauzizai Using Cloudflare's A record to resolve to the host ip and then using Cloudflare's CDN acceleration will result in a 521 situation
admin hauzizai we fully support CF as a proxy. Can you send us your domain name where the problem is?
hauzizai admin Hello This is my domain name api.886990.xyz,As long as the agent using CF will appear 521
admin hauzizai now the domain is pointing at our servers and is working properly. If you want us to check that issue - please setup your domain with CF.
hauzizai admin I mean that I use CF's A record resolution is normal access, but I use CF's proxy to access again, there will be a 521 situation, I don't have a CF agent that can access normally, but I want to use CF's agent does not solve this problem
admin I’m not sure why you are contacting us about this issue: we do not provide technical support for services offered by CloudFlare. You need to specify the DNS servers provided by CloudFlare with your domain registrar and configure the DNS zone in CloudFlare’s panel. These are actions that need to be done on CloudFlare's side, not ours.