Limited Live Migration from OpenShift SDN to OVN-Kubernetes

Solution Verified - Updated -

Issue

Red Hat OpenShift Container Platform 4.16 will be the final version that supports OpenShiftSDN (reference). Red Hat OpenShift Container Platform requires new installations, as of the 4.15 release, to use OVN-Kubernetes (reference). Existing clusters using OpenShiftSDN can continue to be upgraded until 4.16, but must migrate before upgrading to Red Hat OpenShift Container Platform 4.17. The current documentation allows for the OpenShiftSDN to OVN-Kubernetes migration to take place, but requires a cluster-wide outage.

Environment

  • OpenShift Container Platform
    • 4.16
    • 4.15.31+

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