Deploying Pre-Provisioned Block PV PVC and POD

Follow these steps to statically create a PVC in a new Kubernetes cluster, using the information from the leftover underlying volume.

If you are reusing a volume from another Kubernetes cluster, delete the PVC and PV objects from the old Kubernetes cluster before creating a PV in the new Kubernetes cluster.

Deploying a Block Workload

This chart will create three resources on the cluster:

PV pointing to the volume on the Lightbits cluster.
PVC that will bind to this PV (match the size and labels).
POD that will consume this PVC and will run a simple workload on that volume.

Bash
    
helm install --set preprovisioned.enabled=true \  --set global.storageClass.mgmtEndpoints="10.20.131.24:443\\,10.20.131.2:443\\,10.20.131.6:443\\,192.168.18.96:443\\,192.168.18.99:443\\,192.168.20.24:443" \  --set global.jwtSecret.name="example-secret" \  --set global.jwtSecret.namespace="default" \  --set preprovisioned.lightosVolNguid=0e436046-4bd2-4d71-a55d-8dc1ea33307c \  --set preprovisioned.volumeMode=Block \  --set preprovisioned.storage=1Gi \  lb-csi-preprovisioned-volume \  lightbits-helm-repo/lb-csi-workload-examples
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Will output:

Bash
    
 
NAME: lb-csi-preprovisioned-volumeLAST DEPLOYED: Sun Feb 21 16:09:02 2021NAMESPACE: defaultSTATUS: deployedREVISION: 1TEST SUITE: None
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Creating a PVC that Binds to the New PV

Define the following PVC resource file - pvc.yml:

YAML
    
 
kind: PersistentVolumeClaimapiVersion: v1metadata:  name: pre-provisioned-pvcspec:  accessModes:  - ReadWriteOnce  resources:    requests:      storage: 1Gi  storageClassName: example-sc  volumeMode: Block  volumeName: example-pre-provisioned-pv
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And create this resource:

Bash
    
 
kubectl create -f pvc.yml
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Verifying that the PVC is Bounded to the PV

Verify that 'PV' and 'PVC' are created and in 'Bounded' state, and that 'POD' is in 'Running' state.

Bash
    
​x
    
kubectl get pv,pvc,podsNAME                            CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                                 STORAGECLASSpv/example-pre-provisioned-pv   1Gi        RWO            Delete           Bound    default/example-pre-provisioned-pvc   example-sc​NAME                              STATUS   VOLUME                       CAPACITY   ACCESS MODES   STORAGECLASSpvc/example-pre-provisioned-pvc   Bound    example-pre-provisioned-pv   1Gi        RWO            example-sc​NAME                              READY   STATUS    RESTARTS   AGEpod/example-pre-provisioned-pod   1/1     Running   0          26m
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Deleting Resources

Delete release:

Bash
    
 
helm uninstall lb-csi-preprovisioned-volume
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Verify that all resources are gone.

Bash
    
 
kubectl get pv,pvcNo resources found in default namespace.
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