AWS - CloudWatch
You configured a CloudWatch alarm to notify you via SNS when a metric exceeds a threshold, but you never receive alerts. What could be the cause?
You configured a CloudWatch alarm to notify you via SNS when a metric exceeds a threshold, but you never receive alerts. What could be the cause?
medium📝 Troubleshoot Q7 of 15
Step-by-Step Solution
Solution:
Step 1: Check SNS Subscription Status
If the SNS topic subscription is not confirmed, notifications will not be delivered.Step 2: Verify Metric Collection
Ensure metrics are being collected, but this alone won't prevent notifications if subscription is unconfirmed.Step 3: Confirm Alarm Configuration
Threshold settings and CloudWatch agent installation affect alarm triggering but not notification delivery if subscription is unconfirmed.Final Answer:
The SNS topic subscription is not confirmed -> Option BQuick Check:
Unconfirmed SNS subscriptions block notifications [OK]
Quick Trick: SNS subscriptions must be confirmed to receive notifications [OK]
Common Mistakes:
- Assuming metric collection issues prevent notifications
- Believing alarm threshold settings affect notification delivery
- Thinking CloudWatch agent installation affects SNS notifications
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