Technology · Ebook

OpenEBS: Container-Attached Storage for Kubernetes

by Shriira Press

OpenEBS is a Kubernetes-native storage system that turns the disks already attached to your nodes into persistent volumes, without an external SAN or a heavyweight distributed filesystem. It pioneered Container-Attached Storage, where every volume gets its own small set of storage processes running as ordinary pods. This book walks the whole landscape: why stateful workloads strain Kubernetes and how CAS answers it, the CSI plumbing behind dynamic provisioning, and the two engine families — Local PV Hostpath, LVM, and ZFS for fast node-local storage, and Replicated PV Mayastor, a modern NVMe-over-TCP engine that synchronously mirrors data across nodes. Along the way it covers pools and replicas, the Nexus target, snapshots and rebuilds, day-two operations, and how to choose an engine for a real workload.

Contents

1. 1Preface
2. 2Chapter 1 — The Stateful Problem on Kubernetes
3. 3Chapter 2 — Container-Attached Storage
4. 4Chapter 3 — Architecture and the Control Plane
5. 5Chapter 4 — The CSI Layer and Dynamic Provisioning
6. 6Chapter 5 — Local PV Engines
7. 7Chapter 6 — Replicated PV Mayastor
8. 8Chapter 7 — Pools, Replicas, and the Nexus
9. 9Chapter 8 — Snapshots, Clones, and Resilience
10. 10Chapter 9 — Operating OpenEBS
11. 11Chapter 10 — OpenEBS in Practice