Back in November we published a blog post on how to use CoreDNS instead of kube-dns in Kubernetes. Since then, we have advanced this functionality in CoreDNS dramatically. Take a look at the entry "CoreDNS for Kubernetes Service Discovery, Take 2" in the CoreDNS Blog for all the details.
Report host DNS target queries
DNS Statistics Report - DNS Stats Widget
Re: Problem update DNS entries
Problem update DNS entries
Re: nslookup give timeout for 2time for every query and then resolve