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Rolling Back Huawei CSI

If CSI fails to be upgraded from 2.x or 3.x to 4.5.0 and needs to be rolled back, uninstall CSI by referring to Uninstalling Huawei CSI Using Helm and then download and install CSI of the source version.

NOTICE:

  • During the upgrade or rollback, the existing resources such as PVCs, snapshots, and Pods will run properly and will not affect your service access.
  • During the upgrade or rollback, you cannot use Huawei CSI to create new resources or mount or unmount an existing PVC.
  • During the upgrade or rollback, do not uninstall the snapshot-dependent component service.

1 - Rolling Back Huawei CSI on Kubernetes, OpenShift, and Tanzu

Prerequisites

  • CSI has been updated using Helm 3.

Procedure

  1. Use a remote access tool, such as PuTTY, to log in to any master node in the Kubernetes cluster through the management IP address.

  2. Go to the helm/esdk working directory. For the directory path, see Table 1.

    cd helm/esdk

  3. Run the following command to query the historical versions of the CSI services deployed using Helm.

    helm history helm-huawei-csi -n huawei-csi

    The following is an example of the command output.

    REVISION        UPDATED                         STATUS          CHART           APP VERSION     DESCRIPTION     
1       	Mon Jan  8 04:15:40 2024	superseded	esdk-4.4.0	4.4.0      	Install complete
2       	Mon Jan  8 04:16:12 2024	deployed  	esdk-4.5.0	4.5.0      	Upgrade complete

  4. Run the following command to roll back the CSI services to the specified version.

    In the preceding command, revision-number indicates a version number queried in 3. For example, the version is 1.

    helm rollback helm-huawei-csi -n huawei-csi 1

    The following is an example of the command output. If Rollback was a success is displayed in the command output, the CSI services are successfully rolled back to the specified version.

    Rollback was a success! Happy Helming!

2 - Rolling Back Huawei CSI on CCE or CCE Agile

  • During the upgrade or rollback, the existing resources such as PVCs, snapshots, and Pods will run properly and will not affect your service access.
  • During the upgrade or rollback, you cannot use Huawei CSI to create new resources or mount or unmount an existing PVC.
  • During the upgrade or rollback, do not uninstall the snapshot-dependent component service.

Prerequisites

You have downloaded the CSI software package of the source version.

Procedure

  1. Use a remote access tool, such as PuTTY, to log in to any master node in the Kubernetes cluster through the management IP address.
  2. Uninstall CSI. For details, see Procedure.
  3. Reinstall CSI of the source version. For details, see Installing Huawei CSI on the CCE or CCE Agile Platform.