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travisn 5ebb651e37 ceph: update the cephcluster custom resource with ceph health 
The CephCluster resource will now expose the health of the ceph cluster
so admins can query the status with k8s api or kubectl instead of
needing to run the rook toolbox. The operator will query the
ceph status periodically and update the status in the custom resource.

Signed-off-by: travisn <tnielsen@redhat.com>
2019-04-10 14:41:18 -06:00

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Major Themes

Action Required

Notable Features

Minio Object Stores

- Now have an additional label named `objectstore` with the name of the Object Store, to allow better selection for Services.
- Use `Readiness` and `Liveness` probes.
- Updated automatically on Object Store CRD changes.

Ceph

  • Ceph Nautilus (v14) is now supported by Rook.
  • Ceph status is surfaced in the CephCluster CR and periodically updated by the operator (default is 60s). The interval can be configured with the ROOK_CEPH_STATUS_CHECK_INTERVAL env var.
  • A CephNFS CRD will start NFS daemon(s) for exporting CephFS volumes or RGW buckets. See the NFS documentation.
  • Selinux labeling for mounts can now be toggled with the ROOK_ENABLE_SELINUX_RELABELING environment variable.
  • Recursive chown for mounts can now be toggled with the ROOK_ENABLE_FSGROUP environment variable.
  • Added the dashboard port configuration setting.
  • Added the dashboard ssl configuration setting.
  • Added Ceph CSI driver deployments on Kubernetes 1.13 and above.
  • The number of mons can be increased automatically when new nodes come online. See the preferredCount setting in the cluster CRD documentation.
  • New Kubernetes nodes or nodes which are not tainted NoSchedule anymore get added automatically to the existing rook cluster if useAllNodes is set. Issue #2208

Breaking Changes

  • Rook no longer supports Kubernetes 1.8 and 1.9.
  • Rook no longer supports running more than one monitor on the same node when hostNetwork and allowMultiplePerNode are true.
  • Rook Operator switches from Extensions v1beta1 to use Apps v1 API for DaemonSet and Deployment.

Ceph

  • The example operator and CRD yaml files have been refactored to simplify configuration. See the examples help topic for more details.
    • The common resources are now factored into common.yaml from operator.yaml and cluster.yaml.
    • common.yaml: Creates the namespace, RBAC, CRD definitions, and other common operator and cluster resources
    • operator.yaml: Only contains the operator deployment
    • cluster.yaml: Only contains the cluster CRD
    • Multiple examples of the operator and CRDs are provided for common usage of the operator and CRDs.
    • By default, a single namespace (rook-ceph) is configured instead of two namespaces (rook-ceph-system and rook-ceph). New and upgraded clusters can still be configured with the operator and cluster in two separate namespaces.
  • Rook will no longer create a directory-based osd in the dataDirHostPath if no directories or devices are specified or if there are no disks on the host.
  • Containers in mon, mgr, mds, rgw, and rbd-mirror pods have been removed and/or changed names.
  • Config paths in mon, mgr, mds and rgw containers are now always under /etc/ceph or /var/lib/ceph and as close to Ceph's default path as possible regardless of the dataDirHostPath setting.
  • The rbd-mirror pod labels now read rbd-mirror instead of rbdmirror for consistency.

Known Issues

Deprecations

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