CloudFormation / Client / detect_stack_set_drift

detect_stack_set_drift#

CloudFormation.Client.detect_stack_set_drift(**kwargs)#

Detect drift on a stack set. When CloudFormation performs drift detection on a stack set, it performs drift detection on the stack associated with each stack instance in the stack set. For more information, see How CloudFormation performs drift detection on a stack set.

DetectStackSetDrift returns the OperationId of the stack set drift detection operation. Use this operation id with DescribeStackSetOperation to monitor the progress of the drift detection operation. The drift detection operation may take some time, depending on the number of stack instances included in the stack set, in addition to the number of resources included in each stack.

Once the operation has completed, use the following actions to return drift information:

  • Use DescribeStackSet to return detailed information about the stack set, including detailed information about the last completed drift operation performed on the stack set. (Information about drift operations that are in progress isn’t included.)

  • Use ListStackInstances to return a list of stack instances belonging to the stack set, including the drift status and last drift time checked of each instance.

  • Use DescribeStackInstance to return detailed information about a specific stack instance, including its drift status and last drift time checked.

For more information about performing a drift detection operation on a stack set, see Detecting unmanaged changes in stack sets.

You can only run a single drift detection operation on a given stack set at one time.

To stop a drift detection stack set operation, use StopStackSetOperation.

See also: AWS API Documentation

Request Syntax

response = client.detect_stack_set_drift(
    StackSetName='string',
    OperationPreferences={
        'RegionConcurrencyType': 'SEQUENTIAL'|'PARALLEL',
        'RegionOrder': [
            'string',
        ],
        'FailureToleranceCount': 123,
        'FailureTolerancePercentage': 123,
        'MaxConcurrentCount': 123,
        'MaxConcurrentPercentage': 123,
        'ConcurrencyMode': 'STRICT_FAILURE_TOLERANCE'|'SOFT_FAILURE_TOLERANCE'
    },
    OperationId='string',
    CallAs='SELF'|'DELEGATED_ADMIN'
)
Parameters:

  • StackSetName (string) –

    [REQUIRED]

    The name of the stack set on which to perform the drift detection operation.

  • OperationPreferences (dict) –

    The user-specified preferences for how CloudFormation performs a stack set operation.

    For more information about maximum concurrent accounts and failure tolerance, see Stack set operation options.

    • RegionConcurrencyType (string) –

      The concurrency type of deploying StackSets operations in Regions, could be in parallel or one Region at a time.

    • RegionOrder (list) –

      The order of the Regions where you want to perform the stack operation.

      Note

      RegionOrder isn’t followed if AutoDeployment is enabled.

      • (string) –

    • FailureToleranceCount (integer) –

      The number of accounts, per Region, for which this operation can fail before CloudFormation stops the operation in that Region. If the operation is stopped in a Region, CloudFormation doesn’t attempt the operation in any subsequent Regions.

      Conditional: You must specify either FailureToleranceCount or FailureTolerancePercentage (but not both).

      By default, 0 is specified.

    • FailureTolerancePercentage (integer) –

      The percentage of accounts, per Region, for which this stack operation can fail before CloudFormation stops the operation in that Region. If the operation is stopped in a Region, CloudFormation doesn’t attempt the operation in any subsequent Regions.

      When calculating the number of accounts based on the specified percentage, CloudFormation rounds down to the next whole number.

      Conditional: You must specify either FailureToleranceCount or FailureTolerancePercentage, but not both.

      By default, 0 is specified.

    • MaxConcurrentCount (integer) –

      The maximum number of accounts in which to perform this operation at one time. This can depend on the value of FailureToleranceCount depending on your ConcurrencyMode. MaxConcurrentCount is at most one more than the FailureToleranceCount if you’re using STRICT_FAILURE_TOLERANCE.

      Note that this setting lets you specify the maximum for operations. For large deployments, under certain circumstances the actual number of accounts acted upon concurrently may be lower due to service throttling.

      Conditional: You must specify either MaxConcurrentCount or MaxConcurrentPercentage, but not both.

      By default, 1 is specified.

    • MaxConcurrentPercentage (integer) –

      The maximum percentage of accounts in which to perform this operation at one time.

      When calculating the number of accounts based on the specified percentage, CloudFormation rounds down to the next whole number. This is true except in cases where rounding down would result is zero. In this case, CloudFormation sets the number as one instead.

      Note that this setting lets you specify the maximum for operations. For large deployments, under certain circumstances the actual number of accounts acted upon concurrently may be lower due to service throttling.

      Conditional: You must specify either MaxConcurrentCount or MaxConcurrentPercentage, but not both.

      By default, 1 is specified.

    • ConcurrencyMode (string) –

      Specifies how the concurrency level behaves during the operation execution.

      • STRICT_FAILURE_TOLERANCE: This option dynamically lowers the concurrency level to ensure the number of failed accounts never exceeds the value of FailureToleranceCount +1. The initial actual concurrency is set to the lower of either the value of the MaxConcurrentCount, or the value of MaxConcurrentCount +1. The actual concurrency is then reduced proportionally by the number of failures. This is the default behavior. If failure tolerance or Maximum concurrent accounts are set to percentages, the behavior is similar.

      • SOFT_FAILURE_TOLERANCE: This option decouples FailureToleranceCount from the actual concurrency. This allows stack set operations to run at the concurrency level set by the MaxConcurrentCount value, or MaxConcurrentPercentage, regardless of the number of failures.

  • OperationId (string) –

    The ID of the stack set operation.

    This field is autopopulated if not provided.

  • CallAs (string) –

    [Service-managed permissions] Specifies whether you are acting as an account administrator in the organization’s management account or as a delegated administrator in a member account.

    By default, SELF is specified. Use SELF for stack sets with self-managed permissions.

    • If you are signed in to the management account, specify SELF.

    • If you are signed in to a delegated administrator account, specify DELEGATED_ADMIN. Your Amazon Web Services account must be registered as a delegated administrator in the management account. For more information, see Register a delegated administrator in the CloudFormation User Guide.

Return type:

dict

Returns:

Response Syntax

{
    'OperationId': 'string'
}

Response Structure

  • (dict) –

    • OperationId (string) –

      The ID of the drift detection stack set operation.

      You can use this operation ID with DescribeStackSetOperation to monitor the progress of the drift detection operation.

Exceptions

  • CloudFormation.Client.exceptions.InvalidOperationException

  • CloudFormation.Client.exceptions.OperationInProgressException

  • CloudFormation.Client.exceptions.StackSetNotFoundException