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Expand volume

You can expand the storage volume size of each pod.

note

Volume expansion triggers a concurrent restart and the pod role may change after the operation.

Before you start​

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

kbcli cluster list <name>

Example

kbcli cluster list redis-cluster
>
NAME                 NAMESPACE        CLUSTER-DEFINITION        VERSION                TERMINATION-POLICY        STATUS         CREATED-TIME
redis-cluster        default          redis                     redis-7.0.6            Delete                    Running        Apr 10,2023 19:00 UTC+0800

Steps​

  1. Change configuration.

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

    kbcli cluster volume-expand redis-cluster --components="redis" \
    --volume-claim-templates="data" --storage="20Gi"
    • --components describes the component name for volume expansion.
    • --volume-claim-templates describes the VolumeClaimTemplate names in components.
    • --storage describes the volume storage size.

  2. Validate the volume expansion.

    kbcli cluster list redis-cluster
    >
    NAME                 NAMESPACE        CLUSTER-DEFINITION        VERSION                  TERMINATION-POLICY        STATUS          CREATED-TIME
    redis-cluster        default          redis                     redis-7.0.6              Delete                    Updating        Apr 10,2023 16:27 UTC+0800
    • STATUS=Updating: it means the volume expansion is in progress.
    • STATUS=Running: it means the volume expansion operation has been applied.