Storage in Kubernetes: Persistent Volumes (PV), Persistent Volume Claims (PVC), and Storage Classes 📅 Published: May 2026 ⏱️ Estimated Reading Time: 18 minutes 🏷️ Tags: Kubernetes, Persistent Volumes, PVC, Storage Classes, Stateful Applications Introduction: The Storage Problem in Kubernetes Containers are ephemeral. When a container restarts, anything written to its filesystem disappears. For stateless applications, this is fine. But databases, message queues, and file storage applications need their data to survive beyond the life of a single container. Kubernetes solves this problem with Persistent Volumes (PV) and Persistent Volume Claims (PVC). These abstractions separate the provision of storage from its consumption, making it easier for application developers to request storage without understanding the underlying infrastructure. Think of it like a library. The library (Storage Class) owns many books (Persistent Volumes). You fill out a request form (Persistent Volume Cl...
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