You can mount existing compute volumes to pods using static provisioning of persistent volumes.
To mount a compute volume
In the self-service panel, obtain the ID of the desired volume.
- Access the Kubernetes cluster via the dashboard. Click Kubernetes access for instructions.
- On the Kubernetes dashboard, create a storage class, as described in Creating storage classes.
Create a persistent volume. To do it, click + Create and specify the following YAML file:
apiVersion: v1 kind: PersistentVolume metadata: annotations: pv.kubernetes.io/provisioned-by: cinder.csi.openstack.org name: mypv spec: accessModes: - ReadWriteOnce capacity: storage: 10Gi csi: driver: cinder.csi.openstack.org fsType: ext4 volumeHandle: c5850e42-4f9d-42b5-9bee-8809dedae424 persistentVolumeReclaimPolicy: Delete storageClassName: mysc
This manifest specifies the persistent volume
mypvfrom the storage class
myscthat has 10 GiB of storage and access mode that allows it to be mounted in the read/write mode by a single node. The PV
mypvuses the compute volume with the ID
c5850e42-4f9d-42b5-9bee-8809dedae424as backing storage.
Create a persistent volume claim. Before you define the PVC, make sure the PV is created and has the status “Available”. The existing PV must meet the claim’s requirements to storage size, access mode and storage class. Click + Create and specify the following YAML file:
apiVersion: v1 kind: PersistentVolumeClaim metadata: name: mypvc spec: accessModes: - ReadWriteOnce resources: requests: storage: 10Gi storageClassName: mysc
Once the persistent volume claim
mypvcis created, the volume
mypvis bound to it.
Create a pod and specify the PVC as its volume. Use the example from Step 4 in Dynamically provisioning persistent volumes.
In the self-service panel, the compute volume will be mounted to the virtual machine running the Kubernetes pod.