About migrating from OKD 3 to 4

OKD 4 contains new technologies and functionality that result in a cluster that is self-managing, flexible, and automated. OKD 4 clusters are deployed and managed very differently from OKD 3.

The most effective way to migrate from OKD 3 to 4 is by using a CI/CD pipeline to automate deployments in an application lifecycle management framework.

If you do not have a CI/CD pipeline or if you are migrating stateful applications, you can use the Migration Toolkit for Containers (MTC) to migrate your application workloads.

You can use Red Hat Advanced Cluster Management for Kubernetes to help you import and manage your OKD 3 clusters easily, enforce policies, and redeploy your applications. Take advantage of the free subscription to use Red Hat Advanced Cluster Management to simplify your migration process.

To successfully transition to OKD 4, review the following information:

For new features and enhancements, technical changes, and known issues, see the MTC release notes.