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Version: release-0.8

Expand volume

You can expand the storage volume size of each pod.

Before you start​

Check whether the cluster status is Running. Otherwise, the following operations may fail.

kbcli cluster list pulsar

Steps​

  1. Change configuration. There are 3 ways to apply volume expansion.

    Option 1. (Recommended) Use kbcli

    Configure the values of --components, --volume-claim-templates, and --storage, and run the command below to expand the volume.

    note

    Expand volume for journal first. ledger volume expansion must be performed after the journal volume expansion.

    • Expand volume for journal.

      kbcli cluster volume-expand pulsar --storage=40Gi --components=bookies -t journal
      • --components describes the component name for volume expansion.
      • --volume-claim-templates describes the VolumeClaimTemplate names in components.
      • --storage describes the volume storage size.

    • Expand volume for ledger.

      kbcli cluster volume-expand pulsar --storage=200Gi --components=bookies -t ledgers

    Option 2. Create an OpsRequest

    Change the value of storage according to your need and run the command below to expand the volume of a cluster.

    kubectl apply -f - <<EOF
    apiVersion: apps.kubeblocks.io/v1alpha1
    kind: OpsRequest
    metadata:
      generateName: pulsar-volume-expand-
    spec:
      clusterRef: pulsar
      type: VolumeExpansion
      volumeExpansion:
      - componentName: bookies
        volumeClaimTemplates:
        - name: ledgers
          storage: "200Gi"
        - name: journal
          storage: "40Gi"      
    EOF

    Option 3. Edit cluster with kubectl.

    kubectl edit cluster pulsar

  2. Validate the volume expansion operation.

    kubectl get ops
    • STATUS=VolumeExpanding: it means the volume expansion is in progress.
    • STATUS=Running: it means the volume expansion operation has been applied.

  3. Check whether the corresponding resources change.

    kbcli cluster describe pulsar