In order to deal with sudden spikes in traffic, Company A uses Alibaba CloudAuto Scaling...

Alibaba Cloud ACA-Operator Question Answer

In order to deal with sudden spikes in traffic, Company A uses Alibaba Cloud

Auto Scaling to set up an alarm trigger task (growing the Scaling Group when

the average memory utilization on ECS instances exceeds 80%). During the

test, it was found that the alarm task was not executed successfully. Which of

these could be possible causes? (Number of correct answers: 3)

The ECS instances in the Scaling Group have not yet installed the CloudMonitor monitoring agent

Before triggering the alarm task, the number of instances in the group has reached the maximum number of instances allowed (MaxSize)

The instance types chosen in the Scaling Configuration are out-of-stock in the Alibaba Cloud Region where the Scaling Group is located

The number of instances in the current group exceeds the “expected number of instances” for the Scaling Group

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