Question

A platform team wants to attach volumes from a new commercial storage vendor to their Kubernetes pods. The vendor ships a plugin that integrates with Kubernetes without requiring changes to the core Kubernetes source code or recompiling the kubelet. Which Kubernetes mechanism makes this vendor-provided storage integration possible?

Accepted Answer

The Container Storage Interface (CSI), a standard API that lets third-party vendors expose storage systems to Kubernetes via out-of-tree drivers

Answer

The Container Network Interface (CNI), which vendors implement to provision persistent volumes

Answer

The emptyDir volume type, which mounts vendor storage automatically at pod startup

Answer

The Container Runtime Interface (CRI), which the kubelet uses to attach external block storage