openebs/openebs — A popular & widely deployed Open Source Container Nativ

OpenEBS - Cloud Native Storage

Overview

OpenEBS is an open-source Container Native Storage solution that provides persistent storage for Kubernetes workloads. It enables dynamic provisioning of storage resources using containerized storage controllers, making it highly flexible and cloud-native. OpenEBS supports various storage engines, including LocalPVs for direct node storage and Replicated PV advanced data replication and resilience. It is designed to integrate seamlessly with Kubernetes, offering benefits like storage policies, resize, thin-provisioning, snapshots, and restore capabilities, making it an ideal choice for stateful applications.

OpenEBS offers two primary storage approaches for Kubernetes workloads: Local Storage and Replicated Storage. Below is a comparative overview:

Feature	Local Storage	Replicated Storage
Data Availability	Limited to the node where the volume is provisioned; not suitable for high-availability requirements.	Synchronously replicates data across multiple nodes, ensuring high availability and durability.
Use Cases	Ideal for applications managing their own replication and availability, such as distributed databases like MongoDB and Cassandra.	Suitable for stateful workloads requiring storage-level replication and high availability, like Percona/ Standalone DBs, and GitLab.
Performance	Provides near-disk performance with minimal overhead.	Designed for high performance, leveraging NVMe-oF semantics for low-latency access.
Limitations	Not highly available; node failure leads to data unavailability.	Requires sufficient resources (CPU, RAM, NVMe) for optimal performance.
Snapshot and Cloning	Supported when backed by advanced filesystems like LVM or ZFS.	Supported, providing enterprise storage capabilities.
Backup and Restore	Supported via Velero, using Restic for local volumes.	Supported via Velero, ensuring data protection and recovery.

In summary, Local Storage is a good choice when your application can manage its own replication and high availability, and Replicated Storage when you require storage-level replication, enhanced data durability and network-based storage access.

Below are the sub-projects or the major storage solutions under the OpenEBS Umbrella. Visit the individual repositories to learn more about their usage and architecture.

openebs

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OpenEBS - Cloud Native Storage

Overview