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docs/doc/source/storage/kubernetes/default-behavior-of-the-cephfs-provisioner.rst
Juanita-Balaraj 63cd4f5fdc CephFS RWX Support in Host-based Ceph 
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Change-Id: Icd7b08ab69273f6073b960a13cf59905532f851a
Signed-off-by: Juanita-Balaraj <juanita.balaraj@windriver.com>
2021-05-03 16:39:45 -04:00

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Default Behavior of the CephFS Provisioner

The default Ceph Cluster configuration set up during installation contains a single storage tier, storage, containing all the OSDs.

The default CephFS provisioner service runs within the kube-system namespace and has a single storage class, 'cephfs', which is configured to:

  • use the default 'storage' Ceph storage tier
  • use a kube-cephfs-data and kube-cephfs-metadata Ceph pool, and
  • only support requests from the following namespaces: kube-system, default and kube-public.

The full details of the cephfs-provisioner configuration can be viewed using the following commands:

~(keystone_admin)]$ system helm-override-list platform-integ-apps

The following command provides the chart names and the overrides namespaces.

~(keystone_admin)]$ system helm-override-show platform-integ-apps cephfs-provisioner kube-system

See Create ReadWriteMany Persistent Volume Claims <create-readwritemany-persistent-volume-claims> and Mount ReadWriteMany Persistent Volumes in Containers <mount-readwritemany-persistent-volumes-in-containers> for an example of how to create and mount a ReadWriteMany PVC from the cephfs storage class.