OpenShift: DNS Server Misbehaving

Image by Arek Socha from Pixabay

I am deploying an Operator based product onto the OpenShift cluster, however the reconciling error message of the operator gives me,

DNS Error: Server Misbehaving. Please check DNS Settings.

Sure enough, the DNS server is having problem. But it worth a study on how the DNS system works in the OpenShift cluster.

Resolving HTTP Handler