Using a custom domain starting with a digit when provisioning a new ARO cluster

Solution Verified - Updated -

Environment

  • Azure Red Hat OpenShift (ARO)
    • 4
  • OpenShift Managed (Azure)
    • 4

Issue

  • When provisioning a new ARO cluster an error is returned if a custom domain starting with a digit is used:

    Message: The provided domain '123cluster.example.com' is invalid.

Resolution

Domain names starting with digits are not supported at the moment. Create the cluster using a valid domain name (i.e. starting with an alphabetic character).

Root Cause

Using custom domain names starting with digits when creating a new ARO cluster is not supported at the moment.

Diagnostic Steps

When running the following command to create a new cluster using a domain starting with a digit an error is shown:

$ az aro create --resource-group <resource_group_name> --name <cluster_name> --vnet <vnet_name> --master-subnet <master_subnet_name> --worker-subnet <worker_subnet_name> --domain <domain_name>
[...]
Message: The provided domain '<domain_name>' is invalid.

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