Kubernetes
CSI
Mar 27., 2023

Introduction
The Container Storage Interface (CSI) is a specification for container
orchestrators to interact with storage providers.
It enables storage vendors to develop drivers that are compatible with
multiple container orchestrators.
CSI simplifies the integration of storage with containers and makes it easier to
manage persistent data in a containerized environment.

CSI Architecture
CSI architecture consists of three main components: the CSI driver, the CSI
node plugin, and the CSI controller plugin.
The CSI driver is responsible for communicating with the storage system.
The CSI node plugin handles volume operations at the node level, such as
attaching and detaching volumes from a container.
The CSI controller plugin manages the lifecycle of volumes, including creating
and deleting them.

CSI Advantages
CSI offers several advantages over previous storage solutions for containers, including:
Flexibility: CSI is a standardized interface that works with different storage systems,
allowing organizations to choose the best solution for their needs.
Simplified management: CSI simplifies the management of storage for containers, reducing
the complexity and time required to manage storage resources.
Improved portability: CSI enables the portability of containers across different
infrastructures, making it easier to move containers between cloud providers and on-
premise data centers.

CSI Implementations
Kubernetes CSI: The Kubernetes CSI implementation is the most widely used
implementation of CSI and provides support for a wide range of storage systems.
Mesos CSI: Mesos CSI is an implementation of CSI for the Apache Mesos container
orchestrator.
OpenShift CSI: OpenShift CSI is an implementation of CSI for the OpenShift container
platform.
CSI Drivers: https://kubernetes-csi.github.io/docs/drivers.html
There are multiple CSI implementations available, including:

Conclusion
CSI is a specification that enables container orchestrators to interact with storage
providers and simplifies the integration of storage with containers.
CSI offers several advantages over previous storage solutions, including flexibility,
simplified management, and improved portability.
There are multiple CSI implementations available, including Kubernetes CSI, Mesos CSI, and
OpenShift CSI, which provide support for a wide range of storage systems.
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