Explore DNS failure observability and diagnosis in Kubernetes clusters through this informative conference talk. Delve into common DNS lookup failure scenarios and learn about CoreDNS's built-in observability plugins. Discover novel approaches for monitoring and diagnosing DNS issues, including the use of DNSTAP protocol and eBPF-based tools. Gain insights into diagnostic procedures and best practices for addressing DNS failures in large-scale Kubernetes environments. Understand the various types of DNS resolution problems, their root causes, and effective methods for troubleshooting and resolving them in both intermittent and continuous failure scenarios.