A tenant administrator or business group manager selects one or more flavors when creating Red Hat OpenStack blueprints.

Flavors are virtual hardware templates that define the machine resource specifications for instances provisioned in Red Hat OpenStack. Flavors are managed within the Red Hat OpenStack provider and are imported during data collection.

If a flavor that is used in a blueprint is later deleted from the Red Hat OpenStack provider, it is also removed from the blueprint. If all the flavors have been removed from a blueprint, the blueprint is disabled and cannot be used for machine requests until it is edited to add at least one flavor.