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    PolarDB:FailoverDBClusterZonal

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    PolarDB:FailoverDBClusterZonal

    Last Updated:Sep 24, 2026

    Performs a manual primary/secondary switchover for an edge cluster.

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    RAM authorization

    The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

    • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

    • API: The API that you can call to perform the action.

    • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

    • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

      • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

      • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

    • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

    • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

    Action

    Access level

    Resource type

    Condition key

    Dependent action

    polardb:FailoverDBClusterZonal

    update

    *All Resource

    *

    		 None None

    Request syntax

    POST  HTTP/1.1

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    DBClusterId

    string

    Yes

    The cluster ID.

    pc-**************
    TargetDBNodeId

    string

    No

    The ID of the node to be switched to the primary node. If you leave this parameter empty, the system automatically elects a node. You can call the DescribeDBClusters operation to query the node ID.

    pi-***********
    RollBackForDisaster

    boolean

    No

    Specifies whether to switch back to the original primary zone after a failover. Valid values:

    • true: Switch back to the original primary zone.

    • false: Do not switch back to the original primary zone.

    false
    ClientToken

    string

    No

    The client token that is used to ensure the idempotence of the request. You can use the client to generate the value. Make sure that the value is unique among different requests. The token is case-sensitive and can contain a maximum of 64 ASCII characters.

    6000170000591aed949d0f54a343f1a4233c1e7d1c5******
    TargetZoneType

    string

    No

    Specifies whether the switchover is a primary/secondary switchover within the primary zone. Valid values:

    • Primary: primary/secondary switchover within the primary zone.

    • Standby: switchover to the hot standby storage cluster.

    Default value: Primary. This value indicates that the switchover is performed within the active zone.

    Valid values:

    • Primary :

      Primary/secondary switchover within the primary zone.

    • Standby :

      Switchover to the hot standby storage cluster.

    Primary

    Response elements

    Element

    Type

    Description

    Example

    object

    Schema of Response

    RequestId

    string

    The request ID.

    925B84D9-CA72-432C-95CF-738C22******

    Examples

    Success response

    JSON format

    {
  "RequestId": "925B84D9-CA72-432C-95CF-738C22******"
}

    Error codes

    HTTP status code

    Error code

    Error message

    Description
    400 HaStatusNotSupport Current DB instance HA status does not support this operation. The HA status of the instance does not support this operation.
    400 InvalidDBNodeId.Malformed The specified parameter DBNodeId is not valid. The specified DBNodeId parameter is invalid.
    400 InvalidDBType.Malformed The Specified DBType is not valid. The specified database type is invalid.
    400 UnsupportHighFrequenceSwitchOver The instance has switch over too frequent within ten minutes. The current switch is too frequent, it is recommended to try again in 5 minutes.
    400 UnsupportWitchUnhealthyReplication The action is unsupported with unhealthy replication. The current replication relationship is abnormal. Switching is not supported.
    403 OperationDenied.DBNodeType The operation is not permitted due to type of node. The specified node type does not support this operation.
    403 OperationDenied.ClusterCategory The operation is not permitted due to cluster category. This series is not supported by the cluster.
    404 InvalidDBCluster.NotFound The DBClusterId provided does not exist in our records. The specified DBClusterId parameter does not exist in the current record.
    404 InvalidDBClusterId.Malformed The specified parameter DBClusterId is not valid. The specified DBClusterId parameter is invalid.

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.