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add OnDemandBaseCapacity parameter #1364

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add OnDemandBaseCapacity parameter #1364

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8 changes: 8 additions & 0 deletions templates/aws-stack.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -94,6 +94,7 @@ Metadata:
Parameters:
- MinSize
- MaxSize
- OnDemandBaseCapacity
- OnDemandPercentage
- SpotAllocationStrategy
- ScaleOutFactor
Expand Down Expand Up @@ -324,6 +325,12 @@ Parameters:
Type: String
Default: "10s"

OnDemandBaseCapacity:
Description: Specify how much On-Demand capacity the Auto Scaling group should have for its base portion before scaling by percentages. The maximum group size will be increased (but not decreased) to this value.
Type: Number
Default: ""
MinValue: 0

OnDemandPercentage:
Description: Percentage of total instances that should launch as OnDemand. Default is 100% OnDemand - reduce this to use some Spot Instances when they're available and cheaper than the OnDemand price. A value of 70 means 70% OnDemand and 30% Spot Instances.
Type: Number
Expand Down Expand Up @@ -1321,6 +1328,7 @@ Resources:
VPCZoneIdentifier: !If [ "CreateVpcResources", [ !Ref Subnet0, !Ref Subnet1 ], !Ref Subnets ]
MixedInstancesPolicy:
InstancesDistribution:
OnDemandBaseCapacity: !Ref OnDemandBaseCapacity
OnDemandPercentageAboveBaseCapacity: !Ref OnDemandPercentage
SpotAllocationStrategy: !Ref SpotAllocationStrategy
LaunchTemplate:
Expand Down