Subdomain cloudflare tunnel to local homeassistant

[fritex]

Regarding the sub-domain setup at Cloudflare:

Subdomain setup · Cloudflare DNS docs

Set up a child domain - Subdomain setup · Cloudflare DNS docs

@simone.rescio

I already have a domain of my own though I was trying to understand if it is possible to use a subdomain for the tunnel instead of creating/purchasing a TLD for it,

Yes.

Since you’ve already have a domain name, great!
When you’re creating a cloudflared tunnel, you can add a Public hostname like abc.yourdomain.com (sub-domain) and point it to your local Home Assistant, therefore you’d see yourdomain.com listed is already using Cloudflare (has got the assigned Cloudflare nameservers for your Cloudflare account added at your domain registrar).

I am using this approach for HDL related stuff and controlling a “smart-home” room via Home Assistant from a locally hosted VM (without exposing it online).

@simone.rescio

when I made the cloudflare account it made me input my TLD, i had no way to input the subdomain alone

A CNAME (partial) setup approach would be possible, if so:

Partial (CNAME) setup · Cloudflare DNS docs

Adding only a subdomain

You can’t delegate a subdomain into Cloudflare. The entire domain needs to use Cloudflare DNS. I suppose if you had an Enterprise plan, there’s a chance you could delegate a subdomain in. If you want to CNAME an outside domain into your own domain, you would need a Business or Enterprise plan. https://support.cloudflare.com/hc/en-us/articles/360020348832-Understanding-a-CNAME-Setup