A user has configured ELB with Auto Scaling. The user suspended the Auto Scaling terminate process only for a while. What will happen to the availability zone rebalancing process (AZRebalance. during this period?
A.
Auto Scaling will not launch or terminate any instances
B.
Auto Scaling will allow the instances to grow more than the maximum size
C.
Auto Scaling will keep launching instances till the maximum instance size
D.
It is not possible to suspend the terminate process while keeping the launch active
Suggested Answer:B🗳️
Auto Scaling performs various processes, such as Launch, Terminate, Availability Zone Rebalance (AZRebalance) etc. The AZRebalance process type seeks to maintain a balanced number of instances across Availability Zones within a region. If the user suspends the Terminate process, the AZRebalance process can cause the Auto Scaling group to grow up to ten percent larger than the maximum size. This is because Auto Scaling allows groups to temporarily grow larger than the maximum size during rebalancing activities. If Auto Scaling cannot terminate instances, the Auto Scaling group could remain up to ten percent larger than the maximum size until the user resumes the Terminate process type.
When the Auto Scaling terminate process is suspended, it means that instances will not be terminated by Auto Scaling. However, it does not prevent Auto Scaling from launching new instances. Therefore, if the conditions for scaling out are met (e.g., increased demand, scaling policies), Auto Scaling will continue to launch new instances, even if it results in exceeding the maximum size limit that has been set.
Correct Answer: B
https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-suspend-resume-processes.html
"Your Auto Scaling group does not scale in for alarms or scheduled actions that occur while the process is suspended. In addition, the following processes are disrupted:
AZRebalance is still active but does not function properly. It can launch new instances without terminating the old ones. This could cause your Auto Scaling group to grow up to 10 percent larger than its maximum size, because this is allowed temporarily during rebalancing activities. Your Auto Scaling group could remain above its maximum size until you resume the Terminate process. When Terminate resumes, AZRebalance gradually rebalances the Auto Scaling group if the group is no longer balanced between Availability Zones or if different Availability Zones are specified."
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