# DetectStackDrift
<a name="API_DetectStackDrift"></a>

Detects whether a stack's actual configuration differs, or has *drifted*, from its expected configuration, as defined in the stack template and any values specified as template parameters. For each resource in the stack that supports drift detection, CloudFormation compares the actual configuration of the resource with its expected template configuration. Only resource properties explicitly defined in the stack template are checked for drift. A stack is considered to have drifted if one or more of its resources differ from their expected template configurations. For more information, see [Detect unmanaged configuration changes to stacks and resources with drift detection](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-stack-drift.html).

Use `DetectStackDrift` to detect drift on all supported resources for a given stack, or [DetectStackResourceDrift](API_DetectStackResourceDrift.md) to detect drift on individual resources.

For a list of stack resources that currently support drift detection, see [Resource type support for imports and drift detection](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/resource-import-supported-resources.html).

 `DetectStackDrift` can take up to several minutes, depending on the number of resources contained within the stack. Use [DescribeStackDriftDetectionStatus](API_DescribeStackDriftDetectionStatus.md) to monitor the progress of a detect stack drift operation. Once the drift detection operation has completed, use [DescribeStackResourceDrifts](API_DescribeStackResourceDrifts.md) to return drift information about the stack and its resources.

When detecting drift on a stack, CloudFormation doesn't detect drift on any nested stacks belonging to that stack. Perform `DetectStackDrift` directly on the nested stack itself.

## Request Parameters
<a name="API_DetectStackDrift_RequestParameters"></a>

 For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).

 **LogicalResourceIds.member.N**   
The logical names of any resources you want to use as filters.  
Type: Array of strings  
Array Members: Minimum number of 1 item. Maximum number of 200 items.  
Required: No

 ** StackName **   
The name of the stack for which you want to detect drift.  
Type: String  
Length Constraints: Minimum length of 1.  
Pattern: `([a-zA-Z][-a-zA-Z0-9]*)|(arn:\b(aws|aws-us-gov|aws-cn)\b:[-a-zA-Z0-9:/._+]*)`   
Required: Yes

## Response Elements
<a name="API_DetectStackDrift_ResponseElements"></a>

The following element is returned by the service.

 ** StackDriftDetectionId **   
The ID of the drift detection results of this operation.  
CloudFormation generates new results, with a new drift detection ID, each time this operation is run. However, the number of drift results CloudFormation retains for any given stack, and for how long, may vary.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 36.

## Errors
<a name="API_DetectStackDrift_Errors"></a>

For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

## Examples
<a name="API_DetectStackDrift_Examples"></a>

### DetectStackDrift
<a name="API_DetectStackDrift_Example_1"></a>

This example illustrates one usage of DetectStackDrift.

#### Sample Request
<a name="API_DetectStackDrift_Example_1_Request"></a>

```
https://cloudformation.us-east-1.amazonaws.com/
 ?Action=DetectStackDrift
 &Version=2010-05-15
 &StackName=my-stack-with-resource-drift
 &X-Amz-Algorithm=AWS4-HMAC-SHA256
 &X-Amz-Credential=[Access key ID and scope]
 &X-Amz-Date=20171211T230005Z
 &X-Amz-SignedHeaders=content-type;host
 &X-Amz-Signature=[Signature]
```

#### Sample Response
<a name="API_DetectStackDrift_Example_1_Response"></a>

```
<DetectStackDriftResponse xmlns="http://cloudformation.amazonaws.com/doc/2010-05-15/">
  <DetectStackDriftResult>
    <StackDriftDetectionId>2f2b2d60-df86-11e7-bea1-500c2example</StackDriftDetectionId>
  </DetectStackDriftResult>
  <ResponseMetadata>
    <RequestId>2f07c75d-df86-11e7-8270-89489example</RequestId>
  </ResponseMetadata>
</DetectStackDriftResponse>
```

## See Also
<a name="API_DetectStackDrift_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/cloudformation-2010-05-15/DetectStackDrift) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/cloudformation-2010-05-15/DetectStackDrift) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/cloudformation-2010-05-15/DetectStackDrift) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/cloudformation-2010-05-15/DetectStackDrift) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/cloudformation-2010-05-15/DetectStackDrift) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/cloudformation-2010-05-15/DetectStackDrift) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/cloudformation-2010-05-15/DetectStackDrift) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/cloudformation-2010-05-15/DetectStackDrift) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/cloudformation-2010-05-15/DetectStackDrift) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/cloudformation-2010-05-15/DetectStackDrift)