OpenEBS is an open-source, CNCF Sandbox container-native storage platform that gives Kubernetes stateful applications persistent volumes through containerized storage controllers, and it is aimed at platform, infrastructure, and DevOps teams that run stateful workloads on Kubernetes.

What it is

OpenEBS is an Apache-2.0 licensed Container Native Storage solution that provides persistent storage for Kubernetes workloads. It provisions storage dynamically using containerized storage controllers, which makes volume provisioning follow the same declarative, cloud-native model as the rest of a Kubernetes cluster. The project sits in the Kubernetes storage ecosystem alongside CSI drivers and the k8s-sig-storage effort, and it is developed as an umbrella of sub-projects rather than a single binary. Those sub-projects are Local PV Hostpath, Local PV ZFS, Local PV LVM, Local PV Rawfile (marked experimental), and Mayastor, each living in its own repository.

The concrete problem it solves is persistent volume provisioning for stateful applications inside the cluster. OpenEBS splits that work into two approaches. Local Storage attaches volumes directly to node storage, which suits applications that already handle their own replication and availability, such as distributed databases like MongoDB and Cassandra, and delivers near-disk performance with minimal overhead. Replicated Storage synchronously replicates data across multiple nodes, which suits workloads that need storage-level replication and high availability, such as Percona or standalone databases and GitLab, and it uses NVMe-oF semantics for low-latency network access. By keeping the storage controllers in containers, OpenEBS reduces dependence on external block-storage services, the kind of cloud volumes the registry topics tag as ebs and ebs-volumes.

Key capabilities

• Two storage approaches in one platform: Local Storage backed by LocalPVs and Replicated Storage backed by Mayastor.
• Four local engines with distinct backends: Local PV Hostpath (dynamic-localpv-provisioner), Local PV ZFS (zfs-localpv), Local PV LVM (lvm-localpv), and Local PV Rawfile (rawfile-localpv), the last flagged experimental.
• Dynamic provisioning of storage resources through containerized storage controllers.
• CSI-based integration with Kubernetes, published in the registry under the csi topic.
• Storage policies, volume resize, thin-provisioning, snapshots, and restore.
• Snapshot and cloning support on local volumes when backed by advanced filesystems such as LVM or ZFS.
• Backup and restore through Velero, using Restic for local volumes and Velero for replicated volumes.
• Replicated data availability through synchronous replication across multiple nodes, with NVMe-oF semantics for low-latency access.

Who uses it and how

• Teams running distributed databases such as MongoDB and Cassandra that manage their own replication and availability choose Local Storage.
• Teams running Percona, standalone databases, or GitLab that want storage-level replication and high availability choose Replicated Storage.
• Environments optimized for raw throughput use Local Storage, which provides near-disk performance with minimal overhead.
• Clusters with sufficient CPU, RAM, and NVMe resources use the replicated path to gain durability and network-based storage access.
• Contributors and operators coordinate through the #openebs channel on Kubernetes Slack and through community meetings.

Getting started

OpenEBS ships as a Helm chart published to Artifact Hub as openebs/openebs, with chart releases produced by the repository's chart-release.yml workflow. Installation and upgrade therefore follow the standard Helm flow against a Kubernetes cluster, and the project documentation at openebs.io covers sub-project usage and architecture.

How it compares

The facts provided do not name any paid products that OpenEBS replaces, and they do not name competing tools in this category. OpenEBS stands alone in this registry on the evidence available. Any direct comparison would have to come from outside these facts.

When to use it — and when not to

Choose OpenEBS when the cluster can supply the resources each path needs, and accept the trade-off that Local Storage is not highly available: data becomes unavailable when the node holding the volume fails, so it only fits applications that handle their own replication. Replicated Storage removes that limitation but requires sufficient CPU, RAM, and NVMe to perform well, and Local PV Rawfile is explicitly experimental and not a production commitment. Teams that need storage-level high availability on constrained nodes, or that cannot tolerate an experimental sub-project in their stack, should look elsewhere; the project also carries CNCF Sandbox status rather than a graduated one.