setting-up-cloudwatch-alarm-notifications

--- name: setting-up-cloudwatch-alarm-notifications description: Sets up notification channels for CloudWatch alarms using SNS topics and subscriptions. Always use this skill when configuring alarm notifications — it creates encrypted SNS topics, configures topic policies for CloudWatch access, sets up email/SMS/webhook subscriptions, and links alarms to notification actions with proper security controls. version: 1 --- # Setting Up CloudWatch Alarm Notifications ## Overview Domain expertise for configuring Amazon CloudWatch alarm notification channels using Amazon SNS topics and subscriptions. Covers creating encrypted SNS topics, setting up subscriptions for email, SMS, and webhook endpoints, configuring topic policies for CloudWatch access, and linking alarms to notification actions. ## Set up alarm notifications To configure notification channels for a CloudWatch alarm, follow the procedure exactly. See [CloudWatch alarm notification setup procedure](references/setup-cloudwatch-alarm-notifications.md). ## Troubleshooting ### Email notifications not received Verify the email subscription was confirmed. Use `aws sns list-subscriptions-by-topic` to check that the subscription status is "Confirmed" rather than "PendingConfirmation". ### SMS notifications failing Ensure the phone number is in E.164 format (e.g., +12345678901) and that SMS is supported in your AWS region. ### Alarm not triggering notifications Verify the alarm has the correct SNS topic ARN in its AlarmActions using `aws cloudwatch describe-alarms`, and ensure ActionsEnabled is set to true.

存档时间线

版本索引永久保留；内容副本只保留最新 1 份，更早版本仅留索引与哈希（存档时间线的证据链不会因此断裂）。

下载存档内容副本