All my subdomains are failing when proxied, in infinite 301 redirect loops

What is the name of the domain?

family.triantos.com

What is the error number?

301

What is the error message?

family.triantos.com redirected you too many times. Try deleting your cookies. ERR_TOO_MANY_REDIRECTS

What is the issue you’re encountering

When turning on proxy, my sites get 301 for infinite redirects. With proxying off, they work fine

What steps have you taken to resolve the issue?

Read pages on how to set up (Proxy Status), searched for answers here.

What feature, service or problem is this related to?

DNS records

What are the steps to reproduce the issue?

Visit https://family.triantos.com. If you watch traffic in Developer tools, you’ll see a loop of 301 permanent redirects. I have a basic nginx setup that’s worked for years where I redirect http to https but otherwise, nothing fancy. These are small php-hosted apps. I have not modified my nginx config to deal with the upstream Cloudflare proxy. I didn’t see docs saying I need to do so.

Check your SSL/TLS setting is set to “Full (strict)” in your dashboard here…
https://dash.cloudflare.com/?to=/:account/:zone/ssl-tls

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Thanks for the quick reply. That solved the problem!

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