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docs/doc/source/storage/kubernetes/create-readwritemany-persistent-volume-claims.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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.. iqu1616951298602
.. _create-readwritemany-persistent-volume-claims:
=============================================
Create ReadWriteMany Persistent Volume Claims
=============================================
Container images have an ephemeral file system by default. For data to survive
beyond the lifetime of a container, it can read and write files to a persistent
volume obtained with a Persistent Volume Claim \(PVC\) created to provide
persistent storage.
.. rubric:: |context|
For multiple containers to mount the same |PVC|, create a |PVC| with accessMode
of ReadWriteMany \(RWX\).
The following steps show an example of creating a 1GB |PVC| with ReadWriteMany
accessMode.
.. rubric:: |proc|
.. _iqu1616951298602-steps-bdr-qnm-tkb:
#. Create the **rwx-test-claim** Persistent Volume Claim.
#. Create a yaml file defining the claim and its attributes.
For example:
.. code-block:: none
~(keystone_admin)]$
cat <<EOF > rwx-claim.yaml
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: rwx-test-claim
spec:
accessModes:
- ReadWriteMany
resources:
requests:
storage: 1Gi
storageClassName: cephfs
EOF
2. Apply the settings created above.
.. code-block:: none
~(keystone_admin)]$ kubectl apply -f rwx-claim.yaml
persistentvolumeclaim/rwx-test-claim created
This results in 1GB |PVC| being created. You can view the |PVC| using the
following command.
.. code-block:: none
~(keystone_admin)]$ kubectl get persistentvolumeclaims
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS
rwx-test-claim Bound pvc-df9f.. 1Gi RWX cephfs
.. code-block:: none
~(keystone_admin)]$ kubectl get persistentvolume
NAME CAPACITY ACCESS.. RECLAIM.. STATUS CLAIM STORAGECLASS
pvc-df9f.. 1Gi RWX Delete Bound default/rwx-test-claim cephfs