Why am I receiving “1001 DNS Resolution Error” when accessing my app's subdomain?

If you receive a cloudflare - error 1001 when trying to access a subdomain on your app, this means that you have not added the subdomain as one of your app’s domains.

Because of the way that App Platform manages DNS records, you cannot manually adds DNS records to direct subdomains to your app, such as creating a CNAME record in DigitalOcean DNS to point at www.example.com. Instead, you need to explicitly add the subdomain in your app’s settings and ensure that your domain’s DNS is configured using either option 1 or option 2 in that doc.

Related Topics

Why does my app not restart when it fails a health check?

If an app’s health check fails, the app currently does not restart. This is because App Platform does not currently support liveness probes. An app only automatically restarts if the app crashes or if its disk or RAM usage exceeds the its limits.

Where can I find the client IP address of a request connecting to my app?

You can find the client IP address of a request connecting to your app in the do-connecting-ip HTTP header.

Why is my app's database connection timing out?

Timeouts can be caused by high CPU utilization, so check your app’s CPU utilization and consider scaling your app.