Overview: Migrating applications from Red Hat OpenShift classic clusters to hosted control plane clusters
For Red Hat OpenShift administrators, migrating from a classic cluster to one utilizing the hosted control planes architecture can seem like a major undertaking. The good news is that this can be done smoothly with Red Hat.
Hosted control planes offer key advantages over the classic model:
- Reduced infrastructure costs and density: Hosted control planes centralize control planes, enabling more clusters to operate on fewer physical machines, thereby reducing infrastructure expenditure.
- Accelerated cluster creation: As control planes operate as pods within OpenShift, new clusters can be provisioned almost instantaneously, eliminating delays associated with machine provisioning.
- Enhanced separation between control and workload: Hosted control planes effectively decouple the management plane (control plane) from the workload plane, leading to improved security and isolation.
- Multi-architecture and multi-environment support: Hosted control planes facilitate the operation of control planes and worker nodes across diverse architectures and various environments.
- Centralized management: Hosted control planes offer a unified point of management for multiple control planes, streamlining operational tasks and monitoring processes.
We are excited to share a technical guide designed to assist you in planning, designing, and implementing a successful migration from classic OpenShift to OpenShift clusters in the hosted control planes architecture. This guide offers technical information, best practices, and recommendations to help you transition your workloads, applications, and data to the more efficient hosted control planes infrastructure.
Prerequisites:
- Existing clusters on OpenShift classic architecture
- Red Hat OpenShift Service on AWS (or a new hosted control planes architecture of your choice)
- Red Hat account
- Administrator access to your clusters
In this learning path, you will:
- Learn how to migrate clusters from your current architecture to modernized hosted control planes.
- Back up your clusters for disaster recovery.
- Install OpenShift APIs for Data Protection (OADP).
- Find out how to troubleshoot specific errors that you may encounter during migration.
