Lead Image © satori, 123RF.com
Optimally combine Kubernetes and Ceph with Rook
Castling
Hardly a year goes by that does not see some kind of disruptive technology unfold and existing traditions swept away. That's what the two technologies discussed in this article have in common. Ceph captured the storage solutions market in a flash. Meanwhile, Kubernetes shook up the market for virtualization solutions, not only grabbing market share off KVM and others, but also off industry giants such as VMware.
When two disruptive technologies such as containers and Ceph are mixing up the same market, collisions can hardly be avoided. The tool that brings Ceph and Kubernetes together is Rook, which lets you roll out a Ceph installation to a cluster with Kubernetes and offers advantages over a setup where Ceph sits "under" Kubernetes.
The most important advantage is undoubtedly that Ceph integrated into the Kubernetes workflow with the help of Rook [1] can be controlled and monitored just like any other Kubernetes resource. Kubernetes is aware of Ceph and its topology and can adapt it if necessary. However, a setup in which Ceph sits under Kubernetes and only passes persistent volumes through to it, knowing nothing about Ceph, is not integrated and lacks homogeneity.
Getting Started with Rook
ADMIN introduced Rook in detail some time ago [2], looking into its advantages and disadvantages. Since then, much has happened. For example, if you work with OpenStack, Rook will be available automatically in almost every scenario. Many OpenStack vendors are migrating their distributions to Kubernetes, and because OpenStack almost always comes with Ceph in tow, Kubernetes will also include Ceph. However, I'll show you how to get started if you don't have a ready-made OpenStack distribution – and don't want one – with a manual integration.
...
Buy this article as PDF
(incl. VAT)
Buy ADMIN Magazine
US / Canada
UK / Australia
Related content
-
Cloud-native storage for Kubernetes with Rook
Kubernetes is known to be inflexible when it comes to persistent storage, but Rook now offers cloud-native storage and seeks to achieve harmony. -
Kubernetes containers, fleet management, and applications
Kubernetes is all the rage, but many admins find themselves struggling to get started. We present the basic architecture and the most important components and terms. -
Persistent storage management for Kubernetes
The container storage interface (CSI) allows CSI-compliant plugins to connect their systems to Kubernetes and other orchestrated container environments for persistent data storage. -
Production-ready mini-Kubernetes installations
Kubernetes can be highly complex, with massive setup routines that are totally over the top for newcomers. If you want to try out Kubernetes or run it in production, you have a number of options, even if you decide not to use the comprehensive packages from established vendors. -
Cloud-native storage with OpenEBS
Software from the open source OpenEBS project provides a cloud-native storage environment that makes block devices available to individual nodes in the Kubernetes cluster.
Subscribe to our ADMIN Newsletters
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Most Popular
Support Our Work
ADMIN content is made possible with support from readers like you. Please consider contributing when you've found an article to be beneficial.
