Major Themes

Action Required

Notable Features

Added K8s 1.17 to the test matrix and removed K8s 1.12 from the test matrix.

Ceph

OSD refactor: drop support for Rook legacy OSD, directory OSD and Filestore OSD. For more details refer to the corresponding issue.
OSD on PVC now supports a metadata device, refer to the cluster on PVC section or the corresponding issue.
OSD on PVC now supports PVC expansion, if the size of the underlying block increases the Bluestore main block and the overall storage capacity will grow up.
Ceph Nautilus 14.2.5 is the minimum supported version
OSD on PVC doesn't use LVM anymore to configure OSD, but solely relies on the entire block device, done here.
Specific devices for OSDs can now be specified using the full udev path (e.g. /dev/disk/by-id/ata-ST4000DM004-XXXX) instead of the device name.
OSD on PVC CRUSH device storage class can now be changed by setting an annotation "crushDeviceClass" on the "data" volume template. See "cluster-on-pvc.yaml" for example.
Rook will now refuse to create pools with replica size 1 unless requireSafeReplicaSize is set to false.

EdgeFS

YugabyteDB

Cassandra

Added JMX Prometheus exporter support.

Breaking Changes

Minio

The minio operator was removed from Rook

Known Issues

Deprecations