AutoScalingGroupLTProps
@cosmos-building-blocks/service › Globals › AutoScalingGroupLTProps
Properties for AutoScalingGroupLT
Hierarchy
AutoScalingGroupProps
↳ AutoScalingGroupLTProps
Index
Properties
Properties
Readonly instanceType
• instanceType: InstanceType
Overrides void
Defined in packages/@cosmos-building-blocks/service/src/autoscaling.ts:29
Type of instance to launch. if used with useInstanceTemplate = true, it will be applied to LaunchTemplate.
Make sure to check and tweak launchTemplateOverrides and instancesDistribution as the default values set for those
properties will overwrite this InstanceType
Optional Readonly instancesDistribution
• instancesDistribution? : Partial‹InstancesDistributionProperty›
Defined in packages/@cosmos-building-blocks/service/src/autoscaling.ts:57
Can only be used along with useInstanceTemplate = true.
Specifies the distribution of On-Demand Instances and Spot Instances,
the maximum price to pay for Spot Instances, and how the Auto Scaling group allocates instance types
to fulfill On-Demand and Spot capacity.
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-autoscalinggroup-instancesdistribution.html
default - Uses all Spot instances of types specified in property launchTemplateOverrides
{
onDemandAllocationStrategy: "prioritized",
onDemandBaseCapacity: 0,
onDemandPercentageAboveBaseCapacity: 0,
spotAllocationStrategy: "capacity-optimized",
spotMaxPrice: props.spotPrice,
}
Optional Readonly launchTemplateOverrides
• launchTemplateOverrides? : Array‹LaunchTemplateOverridesProperty›
Defined in packages/@cosmos-building-blocks/service/src/autoscaling.ts:41
Can only be used along with useInstanceTemplate = true.
Array of LaunchTemplateOverridesProperty which is a subproperty of LaunchTemplate that describes an override for a launch template.
Currently, the only supported override is instance type
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-autoscalinggroup-launchtemplateoverrides.html
default
[{ instanceType: "t3.medium" }, { instanceType: "t3.small" }]
This will use any Spot instances available, "t3.medium" or "t3.small"
based on spotAllocationStrategy set in instancesDistribution
Optional Readonly useInstanceTemplate
• useInstanceTemplate? : undefined | false | true
Defined in packages/@cosmos-building-blocks/service/src/autoscaling.ts:23
Set this to true if you want to use Instance Template instead of Launch Config.
You can fine tune your default LaunchTemplate with instanceType, launchTemplateOverrides and instancesDistribution
default - false