Multiple filesystems are supported as of the Ceph Pacific release. So we remove the flag from the operator configuration and just have a ceph version check instead. The Operator configuration option `ROOK_ALLOW_MULTIPLE_FILESYSTEMS` has been removed in favor of simply verifying the Ceph version is at least Pacific. Multiple filesystems are stable since Ceph Pacific. So users who had `ROOK_ALLOW_MULTIPLE_FILESYSTEMS` enabled will need to update their Ceph version to Pacific. Closes: https://github.com/rook/rook/issues/7183 Signed-off-by: Sébastien Han <seb@redhat.com>
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Major Themes
v1.7...
K8s Version Support
Upgrade Guides
Breaking Changes
Ceph
- The Operator configuration option
ROOK_ALLOW_MULTIPLE_FILESYSTEMShas been removed in favor of simply verifying the Ceph version is at least Pacific. Multiple filesystems are stable since Ceph Pacific. So users who hadROOK_ALLOW_MULTIPLE_FILESYSTEMSenabled will need to update their Ceph version to Pacific.
Features
Core
Ceph
- Add user data protection when deleting Rook-Ceph Custom Resources
- A CephCluster will not be deleted if there are any other Rook-Ceph Custom resources referencing it with the assumption that they are using the underlying Ceph cluster.
- A CephObjectStore will not be deleted if there is a bucket present. In addition to protection from deletion when users have data in the store, this implicitly protects these resources from being deleted when there is a referencing ObjectBucketClaim present.
- See the design for detailed information.
- Add support for creating Hybrid Storage Pools
- Hybrid storage pool helps to create hybrid crush rule for choosing primary OSD for high performance devices (ssd, nvme, etc) and remaining OSD for low performance devices (hdd).
- See the design for more details.
- Checkout the ceph docs for detailed information.
- Add support cephfs mirroring peer configuration, refer to the configuration for more details
- Add support for Kubernetes TLS secret for referring TLS certs needed for ceph RGW server.
- Stretch clusters are considered stable
- Ceph v16.2.5 or greater is required for stretch clusters
Cassandra
- CRDs converted from v1beta1 to v1
- Schema is generated from the internal types for more complete validation
- Minimum K8s version for the v1 CRDs is K8s 1.16
NFS
- CRDs converted from v1beta1 to v1
- Schema is generated from the internal types for more complete validation
- Minimum K8s version for the v1 CRDs is K8s 1.16