This guide will walk you through the basic setup of a Ceph cluster and enable you to consume block, object, and file storage from other pods running in your cluster. Storage Operators for Kubernetes. Access key: The user’s access_key as … The Ceph cluster needs tuning to meet user workloads, and Rook does not absolve the user from planning out their production storage cluster beforehand. For installation instructions that are in the Helm chart readme file, see Installing Rook Ceph cluster .
We will execute this plan step by step in the second part of this article series, to run ownCloud in Kubernetes, redundant and highly available. Essentially, Rook allows putting Ceph into containers, and provides cluster management logic for running Ceph reliably on 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. • Rook configures the PoD spec of the `mon` and launch the PoD with `makeDeployment()` • Launch the ceph … I wanted to install Prometheus and Grafana on my new Kubernetes cluster, but in order for these packages to work they need someplace to store persistent data.I had run performance and scale tests on Ceph when I was working as a Cloud Architect at Seagate, and I’ve played with Rook during the past year, so I decided to install Rook+Ceph and use that for the Kubernetes cluster’s data storage. Rook. Endpoint: The endpoint where the rgw service is listening. Do you already have a Ceph cluster running and want your K8s applications to consume that storage? 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. Ceph uses object storage, which means it stores data in binary objects spread out across lots of computers. Rook enables Ceph storage systems to run on Kubernetes using Kubernetes primitives. Starting Rook in your cluster … For the purpose of this document, we will consider two simplified use cases to help us make informed decisions about Rook and Ceph: Features of Rook. It automates the tasks of a storage administrator: deployment, bootstrapping, configuration, provisioning, scaling, upgrading, migration, disaster recovery, monitoring, and resource management. Kubernetes v1.11 or higher is supported by Rook. However, two days ago, without any intervention on my part, the ceph cluster stopped working. Ceph: scalable object storage with block and file capabilities Gluster: scalable file storage with object capabilities The differences, of course, are more nuanced than this, based on they way each program handles the data it stores. clusterID: rook-ceph # CephFS filesystem name into which the volume shall be created fsName: myfs # Ceph … Creating a storage class. Rook’s Pods in a Ceph cluster. This setup was tested on Openshift 4.X clusters running on both AWS and custom Openstack based PSI infrastructure. External Ceph Cluster. For more information, see the Rook documentation on Ceph storage . Some time ago, I created a ceph cluster with rook on a single node k3s cluster, just to try and it worked very well. • Rook clusterController is watching the resources changes within the cluster, so: • `kubectl create –f cluster.yaml` will trigger the Ceph cluster bootstrap workflow. I was able to give storage to other pods through cephfs. With Ceph running in the Kubernetes cluster, applications can mount block devices and file systems managed by Rook, or use the S3/Swift API for object storage. Minimum Version. The Rook operator automates configuration of storage components and monitors the cluster to ensure the storage remains available and healthy. Rook turns distributed storage systems into self-managing, self-scaling, self-healing storage services. For a HA cluster, at least 2 Ceph manager are required; mon is a Monitor responsible of maintaining maps of the cluster state required for Ceph daemons to coordinate with each other. When this mode is enabled, Rook will not manage the external cluster, it will simply consume it. For a HA cluster, at least three monitors are required Because Ceph is thinly provisioned, application developers can specify the maximum possible storage size for their PVCs without requiring all end users have that much disk space available. In order to connect, you only need three pieces of information: External cluster Ceph FSID Run kubectl -n rook-ceph get svc rook-ceph-rgw-my-store, then combine the clusterIP and the port. It’s now possible with Rook!
Prerequisites mgr is a Manager daemon responsible for keeping track of runtime metrics and the current state of the Ceph cluster. When you deploy Rook Ceph cluster, by default one storage class is added for the applications to provision dynamic volume. Rook is the most mature framework for managing Ceph in a Kubernetes cluster.