I recently needed to setup a Kubernetes cluster without an external DNS and without Internet access. In the old days, static IPs could be mapped to FQDNs by creating entries in the hosts file, but that won’t work with Kubernetes. With Internet access, the typical solution would be to use a wildcard DNS like xip.io or nip.io. Instead, the workaround is by hardcoding the mapping in the CoreDNS configuration.

If you've had fun with Docker containers, I now introduce you to Kubernetes and wish you the best of luck. I'm still learning myself! I decided to install IBM Cloud Private Community Edition following the Installation guide at IBM's Knowledge Center.