text: Monitoring Lookout for Metrics with Amazon CloudWatch
  When an anomaly detector processes data or sends an alert, Amazon Lookout for Metrics
  sends metrics to Amazon CloudWatch. You can build
  graphs and dashboards with these metrics in the CloudWatch console to monitor detector
  activity, and set alarms that
  notify you when there are errors in alert delivery or anomaly detection. To filter
  and sort metrics, use the
  AlertArn and
  AnomalyDetectorArn Amazon CloudWatch dimensions.
  To view metrics in the CloudWatch console
  Open the Amazon CloudWatch console Metrics page
  (
  AWS/LookoutMetricsnamespace).
  Choose a dimension schema.
  AlertArn – To view metrics for an alert channel.
  AnomalyDetectorArn – To view processing metrics for a detector.
  Choose metrics to add them to the graph.
  To choose a different statistic and customize the graph, use the options on the Graphed metrics tab. By default, graphs use the
  Averagestatistic for all metrics.
  CloudWatch has an Always Free tier. Beyond the free tier threshold, CloudWatch charges
  for metrics, dashboards, alarms,
  logs, and insights. For details, see CloudWatch pricing
  For more information about CloudWatch, see the Amazon CloudWatch User Guide.
  Using processing metrics
  When a detector processes data at the end of each interval, it sends metrics to Amazon CloudWatch. You can use these metrics to monitor detector activity and trigger an alarm if a detector fails to process data.
  There are three processing metrics:
  ExecutionsStarted– The number of times the detector looked for anomalies. For an active detector, this metric is sent once per interval.
  ExecutionsSucceeded– The number of processing attempts that succeeded.
  ExecutionsFailed– The number of processing attempts that failed.
  View the processing metrics with the
  Sum statistic.
  Using alert metrics
  When a detector finds an anomaly, it sends anomaly alerts to alert channels that you configure. Each time it sends an anomaly alert, the detector sends a metric to indicate whether the alarm was sent successfully.
  There are two alert metrics:
  Delivered– An anomaly alert was sent successfully.
  Undelivered– An anomaly alert could not be delivered.
  View the alert metrics with the
  Sum statistic.
  Configuring alarms
  To get notifications when a metric exceeds a threshold, create an alarm. For example,
  you can create an alarm
  that sends a notification when the sum of the
  ExecutionsFailed metric exceeds 1 for an hour.
  To create an alarm
  Open the Amazon CloudWatch console Metrics page
  (
  AWS/LookoutMetricsnamespace).
  Choose Create alarm.
  Choose Select metric and locate a metric for your detector, such as
  ExecutionsFailedfor
  my-detector.
  Follow the instructions to configure a condition, action, and name for the alarm.
  For detailed instructions, see Create a CloudWatch alarm in the Amazon CloudWatch User Guide.