3.2. Metro-DR deployment workflow
This section provides an overview of the steps required to configure and deploy Metro-DR capabilities using the latest versions of Red Hat OpenShift Data Foundation, Red Hat Ceph Storage (RHCS) and Red Hat Advanced Cluster Management for Kubernetes (RHACM) version 2.8 or later, across two distinct OpenShift Container Platform clusters. In addition to two managed clusters, a third OpenShift Container Platform cluster will be required to deploy the Advanced Cluster Management.
To configure your infrastructure, perform the below steps in the order given:
- Ensure requirements across the Hub, Primary and Secondary Openshift Container Platform clusters that are part of the DR solution are met. See Requirements for enabling Metro-DR.
- Ensure you meet the requirements for deploying Red Hat Ceph Storage stretch cluster with arbiter. See Requirements for deploying Red Hat Ceph Storage.
- Deploy and configure Red Hat Ceph Storage stretch mode. For instructions on enabling Ceph cluster on two different data centers using stretched mode functionality, see Deploying Red Hat Ceph Storage.
- Install OpenShift Data Foundation operator and create a storage system on Primary and Secondary managed clusters. See Installing OpenShift Data Foundation on managed clusters.
- Install the ODF Multicluster Orchestrator on the Hub cluster. See Installing OpenShift Data Foundation Multicluster Orchestrator on Hub cluster.
- Configure SSL access between the Hub, Primary and Secondary clusters. See Configuring SSL access across clusters.
Create a DRPolicy resource for use with applications requiring DR protection across the Primary and Secondary clusters. See Creating Disaster Recovery Policy on Hub cluster.
注意The Metro-DR solution can only have one DRpolicy.
Testing your disaster recovery solution with:
Subscription-based application:
- Create sample applications. See Creating a sample Subscription-based application.
- Test failover and relocate operations using the sample application between managed clusters. See Subscription-based application failover and relocating subscription-based application.
ApplicationSet-based application:
- Create sample applications. See Creating ApplicationSet-based applications.
- Test failover and relocate operations using the sample application between managed clusters. See ApplicationSet-based application failover and relocating ApplicationSet-based application.
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