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Specifying Stack Parameters and Reviewing your Stack Update on the AWS CloudFormation Console
To specify stack parameters when updating a stack
On the Specify Parameters page of the Update Stack wizard, enter the values of any parameters that are defined in the updated stack template.
If you have added or removed parameters, the parameters listed here will differ from the ones specified during stack creation. For existing stack parameters, the values that you entered when you created the stack or that were specified during the last update will be used as the defaults in the parameter's field.
Click Continue to review your stack update.
Review the settings of the stack update. If you need to change any settings:
Click Edit Stack to choose a different stack template to use for the update.
Click Back or Edit Parameters to return to specifying parameters.
Click Continue to begin updating your stack.
Your stack will enter the UPDATE_IN_PROGRESS state. After it has finished updating, the stack state will be set to UPDATE_COMPLETE.
If the stack fails to update, it will automatically roll back and the stack will be set to UPDATE_ROLLBACK_COMPLETE.
Note
After your stack has begun updating, you can cancel the update while it's still in the UPDATE_IN_PROGRESS state. For more information, see Canceling a Stack Update
