domain-mapping

I'm developing a service which will have a subdomain for each customer. So far I've set a DNS rule on Google Domains as

* | CNAME | 3600 | ghs.googlehosted.com.

and then I add the mapping for each subdomain in the Cloud Run console. I want to do all this programmatically everytime a new user registers.

The DNS rule will handle automatically any new subdomain, and to map it to the service I'll use the gcloud command: gcloud beta run domain-mappings create --service frontend --domain sub.domain.com

Now, how can I check when the Cloud Run provisioning has done so that I can notify the customer that the platform is ready to use? I could CRON every minute the command gcloud beta run domain-mappings describe --domain sub.domain.com, parse the JSON output and check if the status has done. It's expensive, but it should work. The problem is that even if the gcloud cli or the web console mark the provisioning as done, the platform isn't reachable for another 5-10 minutes, resulting in a ERR_CONNECTION_REFUSED error. The service logs show that a request to the subdomain is being made, but somehow it won't serve it.

I previously added and verified a custom domain "foo.club" and "www.foo.club" (fake examples) to my app engine project.

I let foo.club lapse and so that domain no longer exists. However I cannot remove the domain (or the www) version from the app engine custom domain list.

When I try (in Settings/Custom domains), the 'trashcan' icon is disabled and there is a red exclamation point next to the domain that say "Certificate activation has failed. DNS records could not be found." This last point is expected since the domain does not exist.

There's also an informational box that says "All domains mapped to this application are shown below. Only owners of a domain may remove one of its mappings." I'm not sure if that box always exists or is speficially trying to explain why I can't delete the custom domain.

Regardless, I am the only user in my GCP project and I am the owner of the GCP project (and I was previously the owner of the now-deleted domain).

Further, this domain is no longer present in the list at "https://www.google.com/webmasters/verification/home".

When I try from the commandline, I get:

I have a frontend in cloud run I want to map to a domain purchased in DoDaddy (breadfree.es) for a demo, but after configuring it in Domain mapping it has taken up to 16 hours and it still does not work. Can you give me any advice? I read it takes from 4 to 8 hours for the dns to propagate, and also that for some it works deleting the records and putting them again (in a link below). Is there any other solution that works in GoDaddy?

Also, it is so strange to me because I have discovered although the domain is not mapped, if I map this service to a subdomain, it is propagated faster. I mapped it with tienda.breadfree.es, and it works, although I prefer it to be map to breadfree.es (tienda means shop in Spanish).

Thanks so much in advance for your help!

Google Cloud Run - Domain Mapping stuck at Certificate Provisioning

I am using Google Cloud Run with Pulumi (similar to Terraform). My setup for Cloud Run's domain mapping is: