AWS - CloudWatch
A CloudWatch alarm is not triggering notifications even though it enters ALARM state. What is the most probable cause?
A CloudWatch alarm is not triggering notifications even though it enters ALARM state. What is the most probable cause?
medium📝 Debug Q7 of 15
Step-by-Step Solution
Solution:
Step 1: Understand notification mechanism
Alarms send notifications via SNS topics.Step 2: Identify missing SNS topic effect
Without SNS topic, no notifications are sent even if alarm triggers.Final Answer:
Missing SNS topic causes no notifications on ALARM -> Option AQuick Check:
Notifications require SNS topic association [OK]
Quick Trick: Associate SNS topic to receive alarm notifications [OK]
Common Mistakes:
- Blaming metric frequency for notifications
- Assuming low threshold stops notifications
- Ignoring alarm state correctness
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