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Cancels an instance refresh that is in progress and rolls back any changes that it made. Amazon EC2 Auto Scaling replaces any instances that were replaced during the instance refresh. This restores your Auto Scaling group to the configuration that it was using before the start of the instance refresh.
This operation is part of the instance refresh feature in Amazon EC2 Auto Scaling, which helps you update instances in your Auto Scaling group after you make configuration changes.
A rollback is not supported in the following situations:
There is no desired configuration specified for the instance refresh.
The Auto Scaling group has a launch template that uses an Amazon Web Services Systems
Manager parameter instead of an AMI ID for the ImageId property.
The Auto Scaling group uses the launch template's $Latest or $Default
version.
When you receive a successful response from this operation, Amazon EC2 Auto Scaling immediately begins replacing instances. You can check the status of this operation through the DescribeInstanceRefreshes API operation.
This is an asynchronous operation using the standard naming convention for .NET 4.5 or higher. For .NET 3.5 the operation is implemented as a pair of methods using the standard naming convention of BeginRollbackInstanceRefresh and EndRollbackInstanceRefresh.
Namespace: Amazon.AutoScaling
Assembly: AWSSDK.AutoScaling.dll
Version: 3.x.y.z
public virtual Task<RollbackInstanceRefreshResponse> RollbackInstanceRefreshAsync( RollbackInstanceRefreshRequest request, CancellationToken cancellationToken )
Container for the necessary parameters to execute the RollbackInstanceRefresh service method.
A cancellation token that can be used by other objects or threads to receive notice of cancellation.
| Exception | Condition |
|---|---|
| ActiveInstanceRefreshNotFoundException | The request failed because an active instance refresh or rollback for the specified Auto Scaling group was not found. |
| IrreversibleInstanceRefreshException | The request failed because a desired configuration was not found or an incompatible launch template (uses a Systems Manager parameter instead of an AMI ID) or launch template version ($Latest or $Default) is present on the Auto Scaling group. |
| LimitExceededException | You have already reached a limit for your Amazon EC2 Auto Scaling resources (for example, Auto Scaling groups, launch configurations, or lifecycle hooks). For more information, see DescribeAccountLimits in the Amazon EC2 Auto Scaling API Reference. |
| ResourceContentionException | You already have a pending update to an Amazon EC2 Auto Scaling resource (for example, an Auto Scaling group, instance, or load balancer). |
.NET Core App:
Supported in: 3.1
.NET Standard:
Supported in: 2.0
.NET Framework:
Supported in: 4.5