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Dong, Qiu Jian b05d81fd8b CCE UMN for 1.23 reuploaded -20221103 
Reviewed-by: gtema <artem.goncharov@gmail.com>
Co-authored-by: Dong, Qiu Jian <qiujiandong1@huawei.com>
Co-committed-by: Dong, Qiu Jian <qiujiandong1@huawei.com>
2022-11-10 19:50:29 +00:00

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storage-driver (System Resource Add-on, Mandatory)

Introduction

storage-driver functions as a standard Kubernetes FlexVolume plug-in to allow containers to use IaaS storage resources. By installing and upgrading storage-driver, you can quickly install and update cloud storage capabilities.

storage-driver is a system resource add-on. It is installed by default when a cluster of Kubernetes v1.13 or earlier is created.

Notes and Constraints

  • For clusters created in CCE, Kubernetes v1.15.11 is a transitional version in which the FlexVolume plug-in (storage-driver) is compatible with the CSI plug-in (everest). Clusters of v1.17 and later versions do not support FlexVolume any more. You need to use the everest add-on. For details about CSI and FlexVolume, see Differences Between CSI and FlexVolume Plug-ins.
  • The FlexVolume plug-in will be maintained by Kubernetes developers, but new functionality will only be added to CSI. You are advised not to create storage that connects to the FlexVolume plug-in (storage-driver) in CCE any more. Otherwise, the storage resources may not function normally.
  • This add-on can be installed only in clusters of v1.13 or earlier. By default, the everest add-on is installed when clusters of v1.15 or later are created.

    In a cluster of v1.13 or earlier, when an upgrade or bug fix is available for storage functionalities, you only need to install or upgrade the storage-driver add-on. Upgrading the cluster or creating a cluster is not required.

Installing the Add-on

This add-on has been installed by default. If it is uninstalled due to some reasons, you can reinstall it by performing the following steps:

If storage-driver is not installed in a cluster, perform the following steps to install it:

  1. Log in to the CCE console. In the navigation pane, choose Add-ons. On the Add-on Marketplace tab page, click Install Add-on under storage-driver.
  2. On the Install Add-on page, select the cluster and the add-on version, and click Next: Configuration.
  3. Click Install to install the add-on. Note that the storage-driver has no configurable parameters and can be directly installed.

    After the add-on is installed, click Go Back to Previous Page. On the Add-on Instance tab page, select the corresponding cluster to view the running instance. This indicates that the add-on has been installed on each node in the cluster.

Upgrading the Add-on

  1. Log in to the CCE console. In the navigation pane, choose Add-ons. On the Add-on Instance tab page, select the target cluster and click Upgrade under storage-driver.

    • If the Upgrade button is unavailable, the current add-on is already up-to-date and no upgrade is required.
    • When the upgrade is complete, the original storage-driver version on cluster nodes will be replaced by the latest version.

  2. On the Basic Information page, select the add-on version and click Next.
  3. Click Upgrade to upgrade the storage-driver add-on. Note that the storage-driver has no configurable parameters and can be directly upgraded.

Uninstalling the Add-on

  1. Log in to the CCE console. In the navigation pane, choose Add-ons. On the Add-on Instance tab page, select the target cluster and click Uninstall under storage-driver.
  2. In the dialog box displayed, click Yes to uninstall the add-on.
Parent topic: Add-ons