Dive into the intricacies of Kubernetes API machinery with this informative conference talk from KubeCon + CloudNativeCon Europe 2021. Explore three critical "icebergs" in Kubernetes through lightning talks: troubleshooting namespace deletion issues, understanding REST mapping concepts, and mastering garbage collection mechanisms. Learn how to diagnose and resolve namespace deletion problems, grasp the intricacies of singular-to-plural mapping and CRD naming conflicts, and comprehend the workings of OwnerRefs, BlockOwnerDeletion, Foreground, Background, and GracePeriod in Kubernetes garbage collection. Gain valuable insights from experts at Google and Red Hat in this 32-minute presentation, essential for developers and end-users working with Kubernetes and other CNCF-hosted projects.