Home » Amazon » AWS DevOps Engineer Professional v.2 » Which stack state refuses UpdateStack calls?
For AWS CloudFormation, which stack state refuses UpdateStack calls?
A. UPDATE_ROLLBACK_FAILED
B. UPDATE_ROLLBACK_COMPLETE
C. UPDATE_COMPLETE
D. CREATE_COMPLETE
Correct Answer: A
Explanation/Reference:
Explanation:
When a stack is in the UPDATE_ROLLBACK_FAILED state, you can continue rolling it back to return it to a working state (to UPDATE_ROLLBACK_COMPLETE). You cannot update a stack that is in the UPDATE_ROLLBACK_FAILED state.
However, if you can continue to roll it back, you can return the stack to its original settings and try to update it again.
Reference: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stackscontinueupdaterollback.html
