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Server Load Balancer:UpdateLoadBalancerAttribute

Last Updated:May 30, 2026

Updates the properties of an Application Load Balancer instance, such as its name and modification protection.

Operation description

The UpdateLoadBalancerAttribute operation is asynchronous. After you send a request, the system returns a request ID and runs the task in the background. The properties of the Application Load Balancer instance are not modified until the task is complete. You can call GetLoadBalancerAttribute to query the status of the update.

  • If the Application Load Balancer instance is in the Configuring state, the instance is being updated.

  • If the Application Load Balancer instance is in the Active state, the update is complete.

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Test

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

alb:UpdateLoadBalancerAttribute

update

*LoadBalancer

acs:alb:{#regionId}:{#accountId}:loadbalancer/{#loadbalancerId}

None None

Request parameters

Parameter

Type

Required

Description

Example

ClientToken

string

No

A client-generated token that is used to ensure the idempotence of the request. Make sure that the token is unique among different requests. The token can contain only ASCII characters.

Generate a value from your client and make sure that the value is unique among different requests. The token can contain only ASCII characters.

Note

If you do not specify this parameter, the system uses the RequestId as the ClientToken. The RequestId of each API request is unique.

5A2CFF0E-5718-45B5-9D4D-70B3FF3898

DryRun

boolean

No

Specifies whether to perform a dry run. Valid values:

  • true: Performs a dry run. The system checks for required parameters, the request format, and business limits. If the request fails the check, an error message is returned. If the request passes the check, the DryRunOperation error code is returned. No properties of the Application Load Balancer instance are modified.

  • false (default): Sends a normal request. After the request passes the check, a 2xx status code is returned and the operation is performed.

true

LoadBalancerId

string

Yes

The Application Load Balancer instance ID.

alb-o9ulmq5hgn68jk****

LoadBalancerName

string

No

The name of the Application Load Balancer instance must be 2 to 128 characters in length. It must start with a letter, a Chinese character, or a number. The name can contain numbers, periods (.), underscores (_), hyphens (-), and spaces.

alb-instance-test

ModificationProtectionConfig

object

No

The modification protection settings.

Reason

string

No

The reason for enabling modification protection.

The reason must be 2 to 128 characters long. It must start with a letter and can contain letters, digits, periods (.), underscores (_), and hyphens (-).

This parameter is valid only when Status is set to ConsoleProtection.

Managed Instance

Status

string

No

The modification protection status of the Application Load Balancer instance. Valid values:

  • NonProtection: Disables modification protection. If you specify a value for Reason, the value is cleared.

  • ConsoleProtection: Enables modification protection in the console. If you specify a value for Reason, the value takes effect.

Note

If you set the value to ConsoleProtection, you cannot modify the instance configuration in the Application Load Balancer console. However, you can still modify the instance configuration by calling API operations.

ConsoleProtection

Response elements

Element

Type

Description

Example

object

Updates the attributes of the load balancer instance.

JobId

string

The ID of the sync task.

72dcd26b-f12d-4c27-b3af-18f6aed5****

RequestId

string

The request ID.

CEF72CEB-54B6-4AE8-B225-F876FF7BA984

Examples

Success response

JSON format

{
  "JobId": "72dcd26b-f12d-4c27-b3af-18f6aed5****",
  "RequestId": "CEF72CEB-54B6-4AE8-B225-F876FF7BA984"
}

Error codes

HTTP status code

Error code

Error message

Description

400 IncorrectStatus.LoadBalancer The status of %s [%s] is incorrect.
400 IncorrectBusinessStatus.LoadBalancer The business status of %s [%s]  is incorrect. The business status of %s [%s]  is incorrect.
403 Forbidden.LoadBalancer Authentication is failed for %s. Authentication is failed for %s.
404 ResourceNotFound.LoadBalancer The specified resource %s is not found. The specified resource %s is not found.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.