my-rook-config/PendingReleaseNotes.md

Major Themes

Action Required

Notable Features

• Added K8s 1.17 and K8s 1.18 to the test matrix and removed K8s 1.12 from the test matrix.
• Tests are still run against K8s 1.11 in the release branch as the minimum supported version.
• Rook is now built with go modules in golang 1.13

Ceph

• Ceph Octopus is now supported, with continued support for Nautilus.
  • Ceph Nautilus 14.2.5 is the minimum supported version
  • Support for Mimic was removed. Clusters must be upgraded to Nautilus before upgrading to v1.3.
• 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.
• 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.
• CSI drivers can now be configured using "rook-ceph-operator-config" ConfigMap. ConfigMap can be used in mix with the already existing Env Vars defined in operator deployment manifest. Precedence will be given to ConfigMap in case of conflicting configurations.
• Rook Ceph cleanupPolicy will clean up the dataDirHostPath only after user confirmation. For more info about CleanUpPolicy read the design as well as the documentation cleanupPolicy
• Rook monitor, mds and osd now have liveness probe checks on their respective sockets
• Most of the operator's controller implementations are now based on the controller runtime. No impact to user clusters is expected.
• Object stores can be created without specifying pools in the CephObjectStore CR to allow for pool management outside of Rook such as in the dashboard.
• Operator logs are more concise with the Ceph commands only printing at debug level.
• Various improvements to the integration tests including tests for an external cluster and for a cluster running on PVCs.
• Pools can now be configured to inline compress the data using the compressionMode parameter. Support added here
• Ceph OSDs do not use the host PID, but the PID namespace of the pod (more security). The OSD does not see host running processes anymore.
• placement of all the ceph daemons now supports topologySpreadConstraints.

EdgeFS

YugabyteDB

• Master and TServer pods for YugabyteDB will have resources requests and limits specified as per YugabyteDB recommendations. This will help avoid the soft/hard memory limit issue.

Cassandra

• Added JMX Prometheus exporter support.

Breaking Changes

Ceph

• Support for Mimic was removed
• Support for filestore (directory-based) OSDs was removed. See the upgrade guide for migration instructions.
• Support for OSDs created in Rook v0.9 or earlier was removed (created with Rook partitions instead of ceph-volume). See the upgrade guide for migration instructions.

Minio

• The minio operator was removed from Rook

Known Issues

Deprecations