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Cloudwatch, auto scaling M8 demo - Coggle Diagram

- - - - ■ Period is the length of time to evaluate the metric or expression to create each individual data point for an alarm;( in seconds)
      - ■ Evaluation Period is the number of the most recent periods, or data points, to evaluate when determine alarm state
      - ■ Datapoints to Alarm is the number of data points within the evaluation period that must be breaching to cause the alarm to go to the ALARM state.
        
        The breaching data points do not have to be consecutive, they just must all be within the last number of data points equal to evaluation period
      - ■ For each alarm, you can specify CloudWatch to treat missing data points as belows:-
        
        ■ missing—the alarm does not consider missing data points when evaluating whether to change state (default )
        
        ■ notBreaching—missing data points are treated as being within the threshold
        
        ■ breaching—missing data points are treated as breaching the threshold
        
        ■ ignore—the current alarm state is maintained
      - states of alarm
        
        OK—The metric or expression is within the defined threshold.
        
        ■ ALARM—The metric or expression is outside of the defined threshold.
        
        ■ INSUFFICIENT_DATA—The alarm has just started, the metric is not available, or not
        
        enough data is available for the metric to determine the alarm state.