flyinweb's blog

Introduction

DNS (Domain Name Service) is one of the primary Internet services, which is to map human-friendly domain names to machine-friendly IP address. If there are a lot of people using DNS service (for example, subscribers use ISP's DNS server), one DNS server might be becoming a bottleneck, and the server might fail.

Scalable DNS cluster can help provide scalability and availability of DNS service.

The Example below is about setting up a cluster for recursive DNS but you can just as well use the same method for authorative DNS as well. Just remember that clients who use your cluster as a secondary nameservice would need to also-notify{} each of your realservers, not just the service-IP.