I bought a new custom domain name "rython.dev" and I'm trying to change my website's existing custom domain name to the new one. 1. I'm unable to add a CNAME record to the DNS settings because "An A, AAAA, or CNAME record with that host already exists" even though I'm positive there isn't? 2. When I try to hop on "" or with a "www" subdomain, it gives me an error "Redirected too many times"

Under SSL/TLS -> Overview, change your SSL/TLS Mode to "Full (Strict)"

thanks, I believe that helped But for now, the Github Actions aren't successfully building and I suspect that it's on Github's side and not mine

yea Github is still dying lol https://www.githubstatus.com/incidents/pxg3dz4yg7lp

haha yea

was wondering why I was seeing 500s all over the place and a merged pr just warped back in time... now it makes sense 😄

XD

What happens if you disable proxy status for the domain? What is the SSL certificate that is shown?

like this?

Full is not secure

ah

It should work without paying though, something else might be broken or need a sec

Wait I’m confused. Which domain are you trying to use? The www is the CNAME record you have but the custom GitHub domain is for the apex domain.

I'm trying to use rython.dev?

Then you need the CNAME for the apex to point to the GitHub one and have it configured in GitHub settings. Right now you have a custom domain in GitHub of rython.dev but a DNS record of www.rython.dev pointing to that.

so I need to change the CNAME record?

ehh that shouldn't really matter, he's using the A records Github says you can use for apex, and has a redirect on www

after changing from Full to Full Strict, it seems like the domain continues to work?

okay thanks

If you switched it to a CNAME on your apex it should work though, because Cloudflare is ok if the cert matches the CNAME target

what should I enable/disable?

Remove and readd the Custom Domain, or maybe just enforce https, it just needs to realize that it is enable to configure https now

ok, will do 👍

If it helps to explain, Github is serving the github.io certificate for your site right now, because it doesn't have one issued for it specifically > curl --resolve rython.dev:443:185.199.111.153 https://rython.dev/ -vvv -k -o /dev/null > ... > > * ALPN: server accepted h2 > * Server certificate: > * subject: C=US; ST=California; L=San Francisco; O=GitHub, Inc.; CN=*.github.io > * start date: Feb 21 00:00:00 2023 GMT > * expire date: Mar 20 23:59:59 2024 GMT > * issuer: C=US; O=DigiCert Inc; CN=DigiCert TLS RSA SHA256 2020 CA1 > * SSL certificate verify result: unable to get local issuer certificate (20), continuing anyway. > } [5 bytes data]

should I change the code for Github Actions to host it on a default github url? like make the website work with

https://<username>.github.io/...

I don't think that matters as long as it's available through your custom domain

same error

Github still has the same unavailable message?

yes

wonder if it's cached or it did check again and fail, maybe because of proxy? I thought it didn't care well we have the fallback solution then, delete the A records and create a cname record like your www

create another cname record?

yes, you'll have to delete the 4 A Records first though, that you have for rython.dev

then create

CNAME

@

liyunze-coding.github.io

Proxied

what's next?

Your website works

wow didn't expect that to work

Cloudflare trusts the certificate since it knows the target is github.io, which matches the cname target

thanks!

It wouldn't work if you disabled proxy, which is why getting Github to actually issue you a cert would have been better

thanks @Chaika ! really appreciate it