Storage for Containers using Container Native Storage – Part III

Shipping containers

Overview

In this article we will focus on a new area of storage for containers called Container Native Storage. This article is a collaboration between Daniel Messer (Technical Marketing Manager Storage @RedHat) and Keith Tenzer (Sr. Solutions Architect @RedHat).

So What is Container Native Storage?

Essentially container native storage or CNS is a hyper-converged approach to storage and compute in the context of containers. Each container host or node supplies both compute and storage allowing storage to be completely integrated or absorbed by the platform itself. A software-defined storage system running in containers on the platform, consumes disks provided by nodes and provides a cluster-wide storage abstraction layer. The software-defined storage system then provides capabilities such as high-availability, dynamic provisioning and general storage management. This enables DevOps from a storage perspective, allows storage to grow with the container platform and delivers a high level of efficiency.

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Storage for Containers using Gluster – Part II

Shipping containers

Overview

This article is a collaboration between Daniel Messer (Technical Marketing Manager Storage @RedHat) and Keith Tenzer (Solutions Architect @RedHat).

Gluster as Container-Ready Storage (CRS)

In this article we will look at one of the first options of storage for containers and how to deploy it. Support for GlusterFS has been in Kubernetes and OpenShift for some time. GlusterFS is a good fit because it is available across all deployment options: bare-metal, virtual, on-premise and public cloud. The recent addition of GlusterFS running in a container will be discussed later in this series.

GlusterFS is a distributed filesystem at heart with a native protocol (GlusterFS) and various other protocols (NFS, SMB,…). For integration with OpenShift, nodes will use the native protocol via FUSE to mount GlusterFS volumes on the node itself and then have them bind-mount’ed into the target containers. OpenShift/Kubernetes has a native provisioner that implements requesting, releasing and (un-)mounting GlusterFS volumes.

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