An Auto Scaling group launches Amazon EC2 instances and scales using average CPU utilization as the metric. The Auto Scaling events show InsufficientInstanceCapacity errors. What steps should a SysOps administrator take to fix this problem? (Choose two.)
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Correct answer: Use a different EC2 instance type for the Auto Scaling group., Distribute the Auto Scaling group across additional Availability Zones..
Why this is the answer
InsufficientInstanceCapacity errors indicate that AWS does not have enough available capacity for the requested instance type in the specified Availability Zone(s). To resolve this, you can either use a different EC2 instance type that might have more available capacity or distribute the Auto Scaling group across additional Availability Zones. Distributing across more AZs increases the pool of available capacity for your requested instance type. Changing EBS volume sizes or increasing the maximum number of instances won't address the fundamental capacity shortage. Submitting a service quota increase request is for when you've hit your account's limit, not when AWS itself lacks capacity in a region/AZ.
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