How to make subdomain settings?

Hello,

After moving CDN to Cloudflare, my old subdomain pages stopped working. I selected “A” in the DNS record settings and wrote the “IP” address of the server. But; Subdomains still cannot be reached. For example, Otel1.turksem.com is still closed.

There are many subdomains under Turksem.com. Why should I add these from the DNS section?

Thank you.

http://otel1.turksem.com/ redirects to https://otel1.turksem.com/at Cloudflare (likely you have set “Always use HTTPS” on).

https://otel1.turksem.com/ redirects to http://otel1.turksem.com/ at your origin server.

See…
https://cf.sjr.org.uk/tools/check?8da7900d852f4534a0ea9f98a5b8661a#connection-server-https

Therefore you have redirects that point at each other. You need to remove one (the one on your origin server most likely as you want to use HTTPS).

I could not fully understand. How exactly do I do it?

Hello,

I am seeing the error to many redirects. Can you please try this guide to make sure you do not have SSL mode flexible set.

ERR_TOO_MANY_REDIRECTS · Cloudflare SSL/TLS docs.

As we will try to make the request to your origin on http:// instead of https which can lead to a redirect issue if you are redirecting http to https on the origin/hosting provider level.

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