Topic 1 Question 325
A SysOps administrator is managing a web application that runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The instances run in an EC2 Auto Scaling group. The administrator wants to set an alarm for when all target instances associated with the ALB are unhealthy.
Which condition should be used with the alarm?
AWS/ApplicationELB HealthyHostCount <= 0
AWS/ApplicationELB UnhealthyHostCount >= 1
AWS/EC2 StatusCheckFailed <= 0
AWS/EC2 StatusCheckFailed >= 1
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コメント(9)
- 正解だと思う選択肢: A
"all target instances" means zero Healthy, not one Healthy. "<= 0" means less than or equal to zero
👍 17Gomer2023/06/14 - 正解だと思う選択肢: A
The question states: The administrator wants to set an alarm for when all target instances associated with the ALB are unhealthy. A. AWS/ApplicationELB HealthyHostCount <= 0 would trigger the Alarm because all the host are unhealthy.
Option B: would trigger if one or more is unhealthy but you would still could have healthy host!
👍 5rev22112023/06/13 - 正解だと思う選択肢: B
B. AWS/ApplicationELB UnhealthyHostCount >= 1
By using this condition, the alarm will be triggered when there is at least one unhealthy target instance associated with the Application Load Balancer (ALB).
👍 3mracni2023/06/12
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