Hacking Kubernetes to Migrate In-Tree Volumes to CSI

Explore the process of migrating in-tree volumes to Container Storage Interface (CSI) in Kubernetes through this conference talk. Learn about the challenges and drawbacks of using deprecated in-tree volume drivers, and discover how Datadog tackled the migration of thousands of volumes to CSI-native volumes without downtime. Dive into volume handling internals as the speakers share their custom approach, including crafting scripts and patching the API server. Gain insights on homogenizing Kubernetes clusters, leveraging CSI-specific features, and minimizing risks during the migration process. By the end of this talk, acquire the knowledge needed to migrate your own in-tree volumes efficiently and securely.