The VM disks are remote (the underlaying infrastructure is again a Ceph cluster).

The good news, you can run Ceph on Kubernetes and then use that storage for other Kubernetes resources. I have a k8s cluster on 4 VMs. The OSDs are using the same disk as the VM Operating System. There are a number of critical features such as supporting volume resizing. Rook has become the standard for distributed storage provisioning in Kubernetes and we make use of it to provision and managed our CepthFS storage layer. The common.yaml contains the namespace rook-ceph, common resources (e.g. TL;DR This article contains detailed informations about Rook and explains how to integrate a high available Ceph Storage Cluster to an existing kubernetes cluster by using it. In IBM® Cloud Private, Rook enables Ceph storage to run on Kubernetes by using Kubernetes primitives. What is Ceph? Rook deployment. Each Rook agent configures a Flexvolume plug-in that integrates with the Kubernetes’ volume controller framework. This is now the minimum version of CSI driver that the Rook-Ceph operator supports. Whether you would wish to attach block devices to your virtual machines or to store unstructured data in an object store, Ceph delivers it all in one platform gaining such beautiful flexibility. ceph tools (e.g., ceph, rados and rbd): Remember that Rook is based on an embedded version of the Ceph distributed storage system, which has been used in massive production deployments for years. Ceph is a distributed storage system that is massively scalable and high-performing with no single point of failure. Versions we are using. clusterroles, bindings, service accounts etc.) Rook, in a nutshell, is an operator which means that Rook manages Ceph cluster for you.

Deleting the namespaces rook-ceph and rook-ceph-system can get you into trouble. The first thing we need to do is to install Rook and Ceph in the Kubernetes cluster. In the future they say other storage systems, but Ceph is what we needed. Ceph is a Software Distributed System (SDS), meaning it can be run on any hardware that matches its requirements. Rook deploys the PODs in two namespaces, rook-ceph-system and rook-ceph. Centos 7.4 Kubernetes 1.9.6 Ceph 12.2.4. The basic architecture for that inside a Kubernetes cluster looks as follows: Rook in-cluster architecture. Rook enables Ceph storage systems to run on Kubernetes using Kubernetes primitives. The following image illustrates how Ceph Rook integrates with Kubernetes: With Ceph running in the Kubernetes cluster, Kubernetes applications can mount block devices and filesystems managed by Rook, or can use the S3/Swift API for object storage. The Rook Way of Ceph deployment. 1 master and 3 workers. So in a nutshell, Rook enables Ceph storage systems to run on Kubernetes using Kubernetes primitives. In previous releases, Rook has demonstrated its abilities as an orchestrator for Ceph, a leading distributed storage system. Administrators and users alike have responded very enthusiastically to the simplicity and reliability that Rook’s model has brought to such complex software. After struggling with the Ceph Docker container project, I came across Rook. To tear down the Ceph cluster: Delete the resources created on top of the rook … Add the Rook Operator The operator is responsible for managing Rook resources and needs to be configured to run on Azure Kubernetes Service. On my cluster it took about 2 minutes for the PODs to deploy, initialize, and get to a running state. Ceph-CSI v2.0. I won’t go into all of the details of Rook / Ceph, because I’d like to focus on simply running and using it on AKS in combination with PVCs. Rook is a cloud native storage service that works with Ceph. This article will detail how to expose a Rook Ceph cluster for use outside of Kubernetes. TL;DR This article contains detailed informations about Rook and explains how to integrate a high available Ceph Storage Cluster to an existing kubernetes cluster by using it. Ceph is a robust storage system that uniquely delivers object, block(via RBD), and file storage in one unified system.

With Rook running in your Kubernetes cluster, Kubernetes applications can mount block devices and use for persistent storage. One thing I really want to do is get a test with OpenEBS vs Rook vs vanilla Longhorn (as I mentioned, OpenEBS JIVA is actually longhorn), but from your testing it looks like Ceph via Rook is the best of the open source solutions (which would make sense, it's been around the longest and Ceph is … The Rook operator automates configuration of storage …

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