AWS - CloudWatch
If a CloudWatch alarm is configured with an SNS topic ARN in its AlarmActions, what will be the result when the alarm state changes to ALARM?
If a CloudWatch alarm is configured with an SNS topic ARN in its AlarmActions, what will be the result when the alarm state changes to ALARM?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand alarm action with SNS topic
When alarm state changes to ALARM, it sends a notification to the SNS topic ARN specified.Step 2: SNS topic behavior on receiving alarm notification
The SNS topic then publishes the message to all its subscribed endpoints.Final Answer:
SNS topic publishes a message to all subscribers. -> Option AQuick Check:
Alarm to SNS = message to subscribers [OK]
Quick Trick: SNS topic notifies subscribers on alarm state change [OK]
Common Mistakes:
MISTAKES- Confusing SNS with Auto Scaling actions
- Thinking alarm disables itself
- Assuming SNS deletes subscriptions
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