OpenEBS: Container-Attached Storage for Kubernetes
Shriira Press
Kubernetes storage rebuilt the way Kubernetes itself thinks — as containers, per workload, declared and managed entirely from the cluster.
Welcome to OpenEBS: Container-Attached Storage for Kubernetes.
OpenEBS is a Kubernetes-native storage system that turns the disks already attached to your nodes into persistent volumes your applications can rely on, without dragging an external SAN or a heavyweight distributed filesystem into the picture. It pioneered the idea of Container-Attached Storage, where every volume gets its own small set of storage processes running as ordinary pods, scheduled and supervised by Kubernetes like everything else. This book walks the whole landscape: the problem stateful workloads pose on Kubernetes and why CAS answers it, the CSI plumbing that makes dynamic provisioning work, and the two families of engines OpenEBS ships — the Local PV engines (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 we cover pools and replicas, the Nexus target, snapshots and rebuilds, day-two operations, monitoring, and how to choose an engine for a real workload.
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