Explore the journey of Databricks in migrating their Kubernetes clusters from single-node control planes to highly available (HA) configurations in production environments. Learn about the architectural decisions, safe migration strategies, and adaptations to Day 2 operations implemented across AWS, Azure, and GCP platforms. Discover how this transition improved reliability and enabled faster, safer Kubernetes version upgrades across the fleet. Gain insights into the challenges and solutions encountered during this process, providing valuable knowledge for organizations considering similar migrations in their Kubernetes infrastructure.