Canceling a Stack Update

After a stack update has begun, you can cancel the stack update if the stack is still in the UPDATE_IN_PROGRESS state. After an update has finished, you cannot cancel it. You can, however, update a stack again with any previous settings.

If you cancel a stack update, the stack is rolled back to the stack configuration that existed prior to initiating the stack update.

To cancel a stack update by using the console

1. From the list of stacks in the AWS CloudFormation console, select the stack that is currently being updated. Its status must be UPDATE_IN_PROGRESS.

2. Choose Stack actions and then Cancel update stack.

3. To continue canceling the update, click Cancel update. Otherwise, click Cancel to resume the update.

The stack proceeds to the UPDATE_ROLLBACK_IN_PROGRESS state. After the update cancellation is complete, the stack is set to UPDATE_ROLLBACK_COMPLETE.

To cancel a stack update by using the command line

• Use the command aws cloudformation cancel-update-stack to cancel an update.