Red Hat SummitChapter 1. Preparing to deploy OpenShift Data Foundation
When you deploy OpenShift Data Foundation on OpenShift Container Platform using the local storage devices provided by IBM Power, you can create internal cluster resources. This approach internally provisions base services so that all the applications can access additional storage classes..
Before you begin the deployment of Red Hat OpenShift Data Foundation using a local storage, ensure that you meet the resource requirements. See Requirements for installing OpenShift Data Foundation using local storage devices.
Optional: If you want to enable cluster-wide encryption using the external Key Management System (KMS) follow these steps:
- Ensure that you have a valid Red Hat OpenShift Data Foundation Advanced subscription. To know how subscriptions for OpenShift Data Foundation work, see knowledgebase article on OpenShift Data Foundation subscriptions.
- When the Token authentication method is selected for encryption then refer to Enabling cluster-wide encryption with the Token authentication using KMS.
- When the Kubernetes authentication method is selected for encryption then refer to Enabling cluster-wide encryption with the Kubernetes authentication using KMS.
- Ensure that you are using signed certificates on your Vault servers.
After you have addressed the above, perform the following steps:
1.1. Requirements for installing OpenShift Data Foundation using local storage devices
Node requirements
The cluster must consist of at least three OpenShift Container Platform worker nodes in the cluster with locally attached storage devices on each of them.
- Each of the three selected nodes must have at least one raw block device available to be used by OpenShift Data Foundation.
- The devices to be used must be empty, that is, there should be no persistent volumes (PVs), volume groups (VGs), or local volumes (LVs) remaining on the disks.
You must have a minimum of three labeled worker nodes.
Each node that has local storage devices to be used by OpenShift Data Foundation must have a specific label to deploy OpenShift Data Foundation pods. To label the nodes, use the following command:
$ oc label nodes <NodeNames> cluster.ocs.openshift.io/openshift-storage=''
For more information, see the Resource requirements section in the Planning guide.
Disaster recovery requirements
Disaster Recovery features supported by Red Hat OpenShift Data Foundation require all of the following prerequisites to successfully implement a disaster recovery solution:
- A valid Red Hat OpenShift Data Foundation Advanced subscription.
- A valid Red Hat Advanced Cluster Management (RHACM) for Kubernetes subscription.
To know in detail how subscriptions for OpenShift Data Foundation work, see knowledgebase article on OpenShift Data Foundation subscriptions.
For detailed disaster recovery solution requirements, see Configuring OpenShift Data Foundation Disaster Recovery for OpenShift Workloads guide, and Requirements and recommendations section of the Install guide in Red Hat Advanced Cluster Management for Kubernetes documentation.
