Red Hat SummitChapter 3. Enhancements
This section describes the major enhancements introduced in Red Hat OpenShift Data foundation 4.10.
3.1. Adding OpenShift Data Foundation taints from the user interface
With this update, you can select the OpenShift Data Foundation(ODF) taint nodes option while creating the ODF cluster and even allows you to add the ODF taint post the cluster creation using the user interface. Adding the ODF taint allows only ODF pods to be run on those worker nodes, thus making it dedicated for ODF. For more information, see the deployment guide and managing guide for adding taints from the user interface during deployment and post-deployment respectively.
3.2. Support for AWS gp2 and gp3 CSI drivers
OpenShift Data Foundation now supports the gp2 CSI and gp3 CSI drivers introduced by AWS. These drivers provide improved storage expansion capabilities (gp2 CSI compared to gp2 in-tree) and a reduced monthly price-point (gp3). For more information, see the Infrastructure requirements section of the Planning Guide.
3.3. Utilization card update
With this update, you can view an improved graph representation under the Block and File dashboard. For internal mode cluster, the graph indicates an area chart for used capacity and recovery, stack chart for I/O operations and throughput, line chart for latency information for the internal mode cluster. For more information, see Metrics in the Block and File dashboard.
3.4. Rook
Update quota limit on Object Bucket Claim
Previously, when the usage exceeded the quota limit, then all the operations on the bucket attached with Object Bucket Claim(OBC) became read only. With this update, you can update the quota limit on OBC based on your requirement.
OSDs are safe when multiple jobs are fired
Previously, when multiple jobs removal were fired in parallel then there was a risk of losing data since it would forcefully remove the OSD.
With this update, if you perform multiple jobs removal then it checks whether the OSD is ok-to-stop first and then proceeds. This implementation waits endlessly and retries every minute thereby keeping the OSD safe from losing data.
3.5. Multi-Cloud Object Gateway
NooBaa services update
With this update, a new flag is added disable-load-balancer that replaces the type of service from LoadBalancer to ClusterIP. This allows you to disable the NooBaa service EXTERNAL-IP.
For instructions, see knowledgebase article about Disabling Multicloud Object Gateway external service for private clusters.
3.6. CSI driver
Automatic reclaim space for RADOS Block Devices
RADOS Block Devices(RBD) PersistentVolumes are thin-provisioned when created, meaning little space from the Ceph cluster is consumed. When data is stored on the PersistentVolume, the consumed storage increases automatically. However, after data is deleted, the consumed storage does not reduce, as the RBD PersistentVolume does not return the free space back to the Ceph cluster. In certain scenarios, it is required that the freed up space is returned to the Ceph cluster so that the other workloads can benefit from it.
With this update, the ReclaimSpace feature allows you to enable automatic reclaiming of freed up space from RBD PersistentVolumes with thin-provisioning. You can add an annotation to your PersistentVolume Claim, create a ReclaimSpaceCronJob for recurring space reclaiming, or run a ReclaimSpaceJob for a one-time operation. For more information, see Reclaiming space on target volumes
3.7. Management Console
View the Block and File or Object Service subcomponents on the ODF Dashboard
With this update, you can view the information of the ODF subcomponents, Block and File or Object Service, whenever any of it is down on the OpenShift Data Foundation dashboard.
