[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"cheat-sheet---en":3,"domain-info---en":3,"topic-info----en":3,"lesson-aws-certified-cloudops-engineer-associate-monitoring-logging-performance-alarms-dashboards-and-notifications-composite-alarms-and-alarm-actions-en":4,"next-aws-certified-cloudops-engineer-associate-monitoring-logging-performance-alarms-dashboards-and-notifications-composite-alarms-and-alarm-actions-en":19,"prev-aws-certified-cloudops-engineer-associate-monitoring-logging-performance-alarms-dashboards-and-notifications-composite-alarms-and-alarm-actions-en":31},null,{"locked":5,"reason":6,"meta":7,"item":3},true,"paywall",{"title":8,"description":9,"isFree":10,"estimatedMinutes":11,"difficulty":12,"learningObjectives":13},"Composite Alarms and Alarm Actions","Turn a wall of individual alarms into one signal with composite alarm rule expressions and action suppression, and make alarms fix things instead of just reporting them with EC2, Auto Scaling, Lambda, and Systems Manager actions.",false,22,"advanced",[14,15,16,17,18],"Write a composite alarm rule expression using ALARM, OK, INSUFFICIENT_DATA, AND, OR, and NOT","Explain which actions a composite alarm can and cannot perform","Configure an actions suppressor with WaitPeriod and ExtensionPeriod to silence expected alarms during maintenance","Choose between the reboot and recover EC2 alarm actions from the status check that failed","Identify the prerequisites and constraints of each alarm action type",{"locked":5,"reason":6,"meta":20,"item":3},{"title":21,"description":22,"isFree":10,"estimatedMinutes":23,"difficulty":24,"learningObjectives":25},"CloudWatch Dashboards","Build the view an engineer opens at 03:00: custom and automatic dashboards, the widget types worth knowing, cross-account and cross-Region graphs, dashboards as JSON in source control, and what sharing a dashboard really grants.",16,"beginner",[26,27,28,29,30],"Compare automatic dashboards with custom dashboards and choose between them","Select the right widget type for a given operational question","Build a dashboard that graphs metrics from several accounts and Regions in one view","Manage dashboards as JSON through PutDashboard instead of by clicking","Explain the permissions granted to people you share a dashboard with",{"locked":5,"reason":6,"meta":32,"item":3},{"title":33,"description":34,"isFree":10,"estimatedMinutes":35,"difficulty":36,"learningObjectives":37},"SNS for Operational Alerting","How an alarm notification actually reaches a human: SNS topics and subscriptions, the confirmation step that silently breaks alerting, filter policies, retry behavior per protocol, dead-letter queues, and the KMS permission that stops encrypted topics from receiving alarms.",20,"intermediate",[38,39,40,41,42,43],"Describe the publisher, topic, and subscription model and the endpoint types SNS can deliver to","Explain why an unconfirmed email subscription produces an alarm that appears to work but notifies nobody","Use subscription filter policies to route one topic to different audiences","Compare SNS retry behavior for AWS managed endpoints and customer managed endpoints","Configure a dead-letter queue and explain why it attaches to a subscription rather than a topic","Diagnose an encrypted SNS topic that never receives alarm notifications"]