AWS::OpsWorks::Layer AutoScalingThresholds - Amazon CloudFormation
SyntaxProperties
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AWS::OpsWorks::Layer AutoScalingThresholds

Describes a load-based auto scaling upscaling or downscaling threshold configuration, which specifies when Amazon OpsWorks Stacks starts or stops load-based instances.

Syntax

To declare this entity in your Amazon CloudFormation template, use the following syntax:

JSON

{
  "CpuThreshold" : Double,
  "IgnoreMetricsTime" : Integer,
  "InstanceCount" : Integer,
  "LoadThreshold" : Double,
  "MemoryThreshold" : Double,
  "ThresholdsWaitTime" : Integer
}

YAML

  CpuThreshold: Double
  IgnoreMetricsTime: Integer
  InstanceCount: Integer
  LoadThreshold: Double
  MemoryThreshold: Double
  ThresholdsWaitTime: Integer

Properties

CpuThreshold

The CPU utilization threshold, as a percent of the available CPU. A value of -1 disables the threshold.

Required: No

Type: Double

Update requires: No interruption

IgnoreMetricsTime

The amount of time (in minutes) after a scaling event occurs that Amazon OpsWorks Stacks should ignore metrics and suppress additional scaling events. For example, Amazon OpsWorks Stacks adds new instances following an upscaling event but the instances won't start reducing the load until they have been booted and configured. There is no point in raising additional scaling events during that operation, which typically takes several minutes. IgnoreMetricsTime allows you to direct Amazon OpsWorks Stacks to suppress scaling events long enough to get the new instances online.

Required: No

Type: Integer

Minimum: 1

Maximum: 100

Update requires: No interruption

InstanceCount

The number of instances to add or remove when the load exceeds a threshold.

Required: No

Type: Integer

Update requires: No interruption

LoadThreshold

The load threshold. A value of -1 disables the threshold. For more information about how load is computed, see Load (computing).

Required: No

Type: Double

Update requires: No interruption

MemoryThreshold

The memory utilization threshold, as a percent of the available memory. A value of -1 disables the threshold.

Required: No

Type: Double

Update requires: No interruption

ThresholdsWaitTime

The amount of time, in minutes, that the load must exceed a threshold before more instances are added or removed.

Required: No

Type: Integer

Minimum: 1

Maximum: 100

Update requires: No interruption