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Version: release-0.9

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 mycluster
>
NAME NAMESPACE CLUSTER-DEFINITION VERSION TERMINATION-POLICY STATUS CREATED-TIME
mycluster demo mysql mysql-8.0.33 Delete Running Jul 05,2024 18:46 UTC+0800

Steps

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

    kbcli cluster volume-expand mycluster -n demo --components="mysql" --volume-claim-templates="data" --storage="40Gi"
    • --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 operation. There are two options.

    • View the OpsRequest progress.

      KubeBlocks outputs a command automatically for you to view the details of the OpsRequest progress. The output includes the status of this OpsRequest and PVC. When the status is Succeed, this OpsRequest is completed.

      kbcli cluster describe-ops mycluster-volumeexpansion-8257f -n demo
    • View the cluster status.

      kbcli cluster list mycluster -n demo
      >
      NAME NAMESPACE CLUSTER-DEFINITION VERSION TERMINATION-POLICY STATUS CREATED-TIME
      mycluster demo mysql mysql-8.0.33 Delete Running Jul 05,2024 18:46 UTC+0800
      • STATUS=Updating: it means the volume expansion is in progress.
      • STATUS=Running: it means the volume expansion operation has been applied.
  3. After the OpsRequest status is Succeed or the cluster status is Running again, check whether the corresponding resources change.

    kbcli cluster describe mycluster -n demo