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    Cloud Firewall:ModifyPrivateDnsEndpoint

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    Cloud Firewall:ModifyPrivateDnsEndpoint

    Last Updated:Aug 04, 2026

    Modifies a private DNS endpoint.

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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

    yundun-cloudfirewall:ModifyPrivateDnsEndpoint

    update

    *PrivateDNS

    acs:cloudfirewall::{#accountId}:privatedns/{#AccessInstanceId}

    		 None None

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    AccessInstanceId

    string

    Yes

    The instance ID.

    pd-12345
    PrivateDnsType

    string

    Yes

    The private DNS type. Valid values:

    • PrivateZone

    • Custom

    Custom
    PrimaryDns

    string

    No

    The primary DNS.

    1.1.1.1
    StandbyDns

    string

    No

    The standby DNS.

    1.1.1.2
    AccessInstanceName

    string

    Yes

    The private instance name.

    test
    RegionNo

    string

    Yes

    The region ID of the instance.

    cn-hangzhou

    Response elements

    Element

    Type

    Description

    Example

    object

    Schema of Response

    RequestId

    string

    The request ID.

    6B780BD6-282C-51A9-A8E6-59F636BAFA54

    Examples

    Success response

    JSON format

    {
  "RequestId": "6B780BD6-282C-51A9-A8E6-59F636BAFA54"
}

    Error codes

    HTTP status code

    Error code

    Error message

    Description
    400 ErrorPrivateDnsNotFound private dns not found. The specified private DNS does not exist
    400 ErrorPrivateDnsIpAddress private dns ip address error. Private DNS IP Error
    400 ErrorPrivateDnsIpSame the primary and backup DNS IP cannot be the same. The primary and secondary IP addresses of a private DNS cannot be the same.

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.