On 8/22/2017 12:36 PM, Dmitry Tantsur wrote:
All operators running ironic will have to set the resource class field before upgrading to Pike and change their flavors before upgrading to Queens. See our upgrade notes [6] for details.

It might be worth mentioning that the ironic virt driver in nova is going to be automatically migrating the embedded flavor within existing instances in Pike as long as the associated node has a resource_class set:

https://review.openstack.org/#/c/487954/

Also worth mentioning that a periodic task in the nova-compute service will automatically create any custom resource class from an ironic node in the Placement service if it does not already exist so it can be used later for scheduling with flavors that have the resource class set.

--

Thanks,

Matt

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