Migrating a multi-region OpenStack controller

If you deployed IBM Cloud Manager with OpenStack, version 4.2 to multi-region controllers, you can complete a migration to IBM Cloud Manager with OpenStack, version 4.3.

About this task

Multi-region controller migration is divided into two parts:

1. Master region controller where the Keystone service is shared.
2. Subordinate region controller that uses the Keystone service that is provided by the master region controller.