OnDemandOptions - Amazon Elastic Compute Cloud
ContentsSee Also

OnDemandOptions

Describes the configuration of On-Demand Instances in an EC2 Fleet.

Contents

allocationStrategy

The strategy that determines the order of the launch template overrides to use in fulfilling On-Demand capacity.

lowest-price - EC2 Fleet uses price to determine the order, launching the lowest price first.

prioritized - EC2 Fleet uses the priority that you assigned to each launch template override, launching the highest priority first.

Default: lowest-price

Type: String

Valid Values: lowest-price | prioritized

Required: No

capacityReservationOptions

The strategy for using unused Capacity Reservations for fulfilling On-Demand capacity.

Supported only for fleets of type instant.

Type: CapacityReservationOptions object

Required: No

maxTotalPrice

The maximum amount per hour for On-Demand Instances that you're willing to pay.

Note

If your fleet includes T instances that are configured as unlimited, and if their average CPU usage exceeds the baseline utilization, you will incur a charge for surplus credits. The maxTotalPrice does not account for surplus credits, and, if you use surplus credits, your final cost might be higher than what you specified for maxTotalPrice. For more information, see Surplus credits can incur charges in the Amazon EC2 User Guide.

Type: String

Required: No

minTargetCapacity

The minimum target capacity for On-Demand Instances in the fleet. If this minimum capacity isn't reached, no instances are launched.

Constraints: Maximum value of 1000. Supported only for fleets of type instant.

At least one of the following must be specified: SingleAvailabilityZone | SingleInstanceType

Type: Integer

Required: No

singleAvailabilityZone

Indicates that the fleet launches all On-Demand Instances into a single Availability Zone.

Supported only for fleets of type instant.

Type: Boolean

Required: No

singleInstanceType

Indicates that the fleet uses a single instance type to launch all On-Demand Instances in the fleet.

Supported only for fleets of type instant.

Type: Boolean

Required: No

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: