Improving the Resiliency of Our Infrastructure DNS Zone

In this blog post, the authors discuss how they made their infrastructure DNS zone more reliable by using multiple primary nameservers to leverage their own DNS product running on their edge as well as a third-party DNS provider. They set up their infrastructure zone with multiple primary nameservers and added three nameservers from an additional provider to their zone at their registrar. This setup is similar to using a primary and secondary server, but the main difference is that the nameservers operate independently from one another. The authors also automated the process of maintaining their infrastructure DNS zone by using OctoDNS, which provides a set of tools that make it easy to manage DNS records across multiple providers. They plan to further automate the process in the future by reducing the need for approvals when adding new records.

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