CustomizedLoadMetricSpecification
Represents a CloudWatch metric of your choosing that can be used for predictive scaling.
For predictive scaling to work with a customized load metric specification, Amazon Auto Scaling
needs access to the Sum
and Average
statistics that CloudWatch computes
from metric data.
When you choose a load metric, make sure that the required Sum
and
Average
statistics for your metric are available in CloudWatch and that they
provide relevant data for predictive scaling. The Sum
statistic must represent
the total load on the resource, and the Average
statistic must represent the
average load per capacity unit of the resource. For example, there is a metric that counts
the number of requests processed by your Auto Scaling group. If the Sum
statistic
represents the total request count processed by the group, then the Average
statistic for the specified metric must represent the average request count processed by
each instance of the group.
If you publish your own metrics, you can aggregate the data points at a given interval and then publish the aggregated data points to CloudWatch. Before Amazon Auto Scaling generates the forecast, it sums up all the metric data points that occurred within each hour to match the granularity period that is used in the forecast (60 minutes).
For information about terminology, available metrics, or how to publish new metrics, see Amazon CloudWatch Concepts in the Amazon CloudWatch User Guide.
After creating your scaling plan, you can use the Amazon Auto Scaling console to visualize forecasts for the specified metric. For more information, see View Scaling Information for a Resource in the Amazon Auto Scaling User Guide.
Contents
 Dimensions

The dimensions of the metric.
Conditional: If you published your metric with dimensions, you must specify the same dimensions in your customized load metric specification.
Type: Array of MetricDimension objects
Required: No
 MetricName

The name of the metric.
Type: String
Required: Yes
 Namespace

The namespace of the metric.
Type: String
Required: Yes
 Statistic

The statistic of the metric. The only valid value is
Sum
.Type: String
Valid Values:
Sum
Required: Yes
 Unit

The unit of the metric.
Type: String
Required: No
See Also
For more information about using this API in one of the languagespecific Amazon SDKs, see the following: