An organization has configured Auto Scaling for hosting their application. The system admin wants to
understand the Auto Scaling health check process. If the instance is unhealthy, Auto Scaling launches an
instance and terminates the unhealthy instance. What is the order execution?
A.
Auto Scaling launches a new instance first and then terminates the unhealthy instance
B.
Auto Scaling performs the launch and terminate processes in a random order
C.
Auto Scaling launches and terminates the instances simultaneously
D.
Auto Scaling terminates the instance first and then launches a new instance
Explanation:
Auto Scaling keeps checking the health of the instances at regular intervals and marks the instance for
replacement when it is unhealthy. The ReplaceUnhealthy process terminates instances which are marked as
unhealthy and subsequently creates new instances to replace them. This process first terminates the instance
and then launches a new instance.
D
Auto Scaling creates a new scaling activity for terminating the unhealthy instance and then terminates it. Later, another scaling activity launches a new instance to replace the terminated instance.
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