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    ApsaraDB for MyBase:ModifyDedicatedHostClass

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    ApsaraDB for MyBase:ModifyDedicatedHostClass

    Last Updated:Aug 28, 2026

    Upgrades host specifications.

    Operation description

    After a host is created in a dedicated cluster, you can upgrade the host specifications, such as CPU and memory. For more information, see Upgrade host specifications.

    Note

    Upgrading host specifications causes the host and the database instances running on it to restart. For information about the impacts of a host restart, see Restart a host.

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    RAM authorization

    No authorization for this operation. If you encounter issues with this operation, contact technical support.

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    RegionId

    string

    Yes

    The region ID.

    cn-hangzhou
    DedicatedHostId

    string

    Yes

    The host ID. You can log on to the ApsaraDB for MyBase console and go to the Hosts page to view the host ID.

    ch-bp1fgj3kt7fsb****
    TargetClassCode

    string

    Yes

    The target instance type for the host upgrade. For more information, see Host specification details.

    rds.c6.x4large
    SwitchTime

    string

    No

    The time at which to upgrade host specifications. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC.

    Note

    This parameter must be specified only when SwitchTimeMode is set to 2.

    2021-07-13T07:14:22Z
    SwitchTimeMode

    string

    No

    The execution mode for upgrading host specifications. Valid values:

    • 0 (default): immediately upgrades host specifications.

    • 2: upgrades host specifications at a specified point in time.

    Note

    If you set this parameter to 2, you must specify SwitchTime.

    2

    Response elements

    Element

    Type

    Description

    Example

    object

    DedicatedHostId

    string

    The host ID.

    ch-bp1fgj3kt7fsb****
    RequestId

    string

    The request ID.

    D6E068C3-25BC-455A-85FE-45F0B22ESD12
    TaskId

    string

    The task ID.

    10254125

    Examples

    Success response

    JSON format

    {
  "DedicatedHostId": "ch-bp1fgj3kt7fsb****",
  "RequestId": "D6E068C3-25BC-455A-85FE-45F0B22ESD12",
  "TaskId": "10254125"
}

    Error codes

    HTTP status code

    Error code

    Error message

    Description
    400 InvalidAction The specified action is not valid. The specified action is not valid.

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.