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Explore DNS challenges and solutions in large-scale Kubernetes environments through this informative conference talk. Dive into the intricacies of Kubernetes DNS, including its default configuration and access methods. Learn about unexpected issues encountered by Datadog while managing clusters with thousands of nodes and high DNS query loads. Discover how to handle problems related to IPv6, Go implementations, CoreDNS Autopath, and node-local DNS. Gain insights into mitigating issues such as source port reuse, OOM-killed CoreDNS instances, and upstream DNS problems. Understand the importance of proper DNS setup and monitoring in Kubernetes deployments, and acquire strategies to detect and resolve DNS-related issues before they impact your system's performance and reliability.
