- Rook can now be configured to read "region" and "zone" labels on Kubernetes nodes and use that information as part of the CRUSH location for the OSDs.
- Ceph CRUSH tunable are not enforced to "firefly" anymore, Ceph picks the right tunable for its own version, to read more about tunable [see the Ceph documentation](http://docs.ceph.com/docs/master/rados/operations/crush-map/#tunables)
- For rgw, when deploying an object store with `object.yaml`, using `allNodes` is not supported anymore, a transition path has been implemented in the code though.
So if you were using `allNodes: true`, Rook will replace each daemonset with a deployment (one for one replacement) gradually.
This operation will be triggered on an update or when a new version of the operator is deployed.
Once complete, it is expected that you edit your object CR with `kubectl -n rook-ceph edit cephobjectstore.ceph.rook.io/my-store` and set `allNodes: false` and `instances` with the current number of rgw instances.