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Umanga Chapagain 25e4275082 Rook: Added NodeAffinity to agent and discovery daemon 
Previously, Rook Agent and Discovery DaemonSet deployment didn't allow
adding nodeAffinity. This commit adds nodeAffinity spec to daemonSet
deployment, which can be configured through environment variables in
operator deployment yaml.

+ Support multiple LabelKey, each with multiple LabelValue
+ Support multiple LabelKey with no value

Signed-off-by: Umanga Chapagain <chapagainumanga@gmail.com>
2019-07-05 13:48:09 +05:30

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Major Themes

Action Required

Notable Features

  • Creation of storage pools through the custom resource definitions (CRDs) now allows users to optionally specify deviceClass property to enable distribution of the data only across the specified device class. See Ceph Block Pool CRD for an example usage
  • Added K8s 1.15 to the test matrix and removed K8s 1.10 from the test matrix.
  • OwnerReferences are created with the fully qualified apiVersion such that the references will work properly on OpenShift.

Ceph

  • 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.
  • Rgw pods have liveness probe enabled
  • Rgw is now configured with the Beast backend as of the Nautilus release
  • OSD: newly updated cluster from 0.9 to 1.0.3 and thus Ceph Nautilus will have their OSDs allowing new features for Nautilus
  • Rgw instances have their own key and thus are properly reflected in the Ceph status
  • The Rook Agent pods are now started when the CephCluster is created rather than immediately when the operator is started.
  • 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
  • NodeAffinity can be applied to rook-ceph-agent DaemonSet with AGENT_NODE_AFFINITY environment variable.
  • NodeAffinity can be applied to rook-discover DaemonSet with DISCOVER_AGENT_NODE_AFFINITY environment variable.

Breaking Changes

Known Issues

Deprecations

Ceph

  • 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.

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