You can call this operation to update a stack instance in a specified account within a region.

A stack instance is a stack in a specified account within a region. You must specify at least one account and one region.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes UpdateStackInstances

The operation that you want to perform. Set the value to UpdateStackInstances.

AccountIds JSON Yes ["123456"]

The list of target account IDs, in JSON format. A maximum of 20 accounts can be specified.

ParameterOverrides.N.ParameterKey String Yes Amount

The name of override parameter N. If the name and value of the parameter are not specified, the name and value specified during stack group creation are used.

Maximum value of N: 200.

ParameterOverrides.N.ParameterValue String Yes 1

The value of override parameter N. If the name and value of the parameter are not specified, the name and value specified during stack group creation are used.

Maximum value of N: 200.

RegionId String Yes cn-hangzhou

The region ID of the stack. You can call the DescribeRegions operation to query the most recent region list.

RegionIds JSON Yes ["cn-hangzhou", "cn-beijing"]

The list of target regions, in JSON format. A maximum of 20 regions can be specified.

StackGroupName String Yes MyStackGroup

The name of the stack group. The name must be unique in a region. The name can be up to 255 characters in length and can contain digits, letters, hyphens (-), and underscores (_). It must start with a digit or letter.

ClientToken String No 123e4567-e89b-12d3-a456-426655440000

The client token that is used to ensure the idempotence of the request. You can use the client to generate the value, but you must ensure that it is unique among different requests. The token can contain only letters, digits, hyphens (-), and underscores(_) and cannot exceed 64 characters in length. For more information, see How to ensure idempotence.

OperationDescription String No Update stack instances in hangzhou and beijing

The description of the operation. The description describes the purpose or action of the operation.

The description must be 1 to 256 characters in length.

OperationPreferences JSON No {"FailureToleranceCount": 1, "MaxConcurrentCount": 2}

The operation settings, in JSON format. The following fields are supported:

  • FailureToleranceCount

The maximum number of stack operation failures that can occur. In a stack group operation, if the total number of failures does not exceed the FailureToleranceCount value, the operation succeeds. Otherwise, the operation fails.

If the FailureToleranceCount parameter is not specified, the default value is 0. You can specify either the FailureToleranceCount parameter or the FailureTolerancePercentage parameter. But you cannot specify both of them.

Valid values: 0 to 20.

  • FailureTolerancePercentage

The percentage of stack operation failures that can occur. In a stack group operation, if the percentage of failures does not exceed the FailureTolerancePercentage value, the operation succeeds. Otherwise, the operation fails.

You can specify either the FailureToleranceCount parameter or the FailureTolerancePercentage parameter. But you cannot specify both of them.

Valid values: 0 to 100.

  • MaxConcurrentCount

The maximum number of target accounts in which a stack group operation can be performed at one time.

You can specify either the MaxConcurrentCount parameter or the MaxConcurrentPercentage parameter. But you cannot specify both of them.

Valid values: 1 to 20.

  • MaxConcurrentPercentage

The maximum percentage of target accounts in which a stack group operation can be performed at one time.

You can specify either the FailureToleranceCount parameter or the FailureTolerancePercentage parameter. But you cannot specify both of them.

Valid values: 1 to 100.

Response parameters

Parameter Type Example Description
OperationId String 6da106ca-1784-4a6f-a7e1-e723863dc75a

The ID of the operation.

RequestId String 14A07460-EBE7-47CA-9757-12CC4761D47A

The ID of the request.

Examples

Sample requests

http(s)://[Endpoint]/? Action=UpdateStackInstances
&AccountIds=["123456"]
&ParameterOverrides.1.ParameterKey=Amount
&ParameterOverrides.1.ParameterValue=1
&RegionId=cn-hangzhou
&RegionIds=["cn-hangzhou", "cn-beijing"]
&StackGroupName=MyStackGroup
&<Common request parameters>

Sample success responses

XML format

<RequestId>14A07460-EBE7-47CA-9757-12CC4761D47A</RequestId>
<OperationId>6da106ca-1784-4a6f-a7e1-e723863dc75a</OperationId>

JSON format

{
    "RequestId": "14A07460-EBE7-47CA-9757-12CC4761D47A",
    "OperationId": "6da106ca-1784-4a6f-a7e1-e723863dc75a"
}

Error codes

For a list of error codes, visit the API Error Center.