Spot
Constructors
Properties
The strategy that determines how to allocate the target Spot Instance capacity across the Spot Instance pools specified by the Spot Fleet launch configuration. For more information, see Allocation strategies for Spot Instances in the Amazon EC2 User Guide .
Indicates whether running Spot Instances should be terminated if you decrease the target capacity of the Spot Fleet request below the current size of the Spot Fleet. Supported only for fleets of type maintain .
The Amazon Resource Name (ARN) of an AWS Identity and Access Management (IAM) role that grants the Spot Fleet the permission to request, launch, terminate, and tag instances on your behalf. For more information, see Spot Fleet Prerequisites in the Amazon EC2 User Guide . Spot Fleet can terminate Spot Instances on your behalf when you cancel its Spot Fleet request or when the Spot Fleet request expires, if you set TerminateInstancesWithExpiration .
The behavior when a Spot Instance is interrupted. The default is terminate .
The number of Spot pools across which to allocate your target Spot capacity. Valid only when Spot AllocationStrategy is set to lowest-price . Spot Fleet selects the cheapest Spot pools and evenly allocates your target Spot capacity across the number of Spot pools that you specify. Note that Spot Fleet attempts to draw Spot Instances from the number of pools that you specify on a best effort basis. If a pool runs out of Spot capacity before fulfilling your target capacity, Spot Fleet will continue to fulfill your request by drawing from the next cheapest pool. To ensure that your target capacity is met, you might receive Spot Instances from more than the number of pools that you specified. Similarly, if most of the pools have no Spot capacity, you might receive your full target capacity from fewer than the number of pools that you specified.
The launch specifications for the Spot Fleet request. If you specify LaunchSpecifications , you can't specify LaunchTemplateConfigs .
The launch template and overrides. If you specify LaunchTemplateConfigs , you can't specify LaunchSpecifications .
One or more Classic Load Balancers and target groups to attach to the Spot Fleet request. Spot Fleet registers the running Spot Instances with the specified Classic Load Balancers and target groups. With Network Load Balancers, Spot Fleet cannot register instances that have the following instance types: C1, CC1, CC2, CG1, CG2, CR1, CS1, G1, G2, HI1, HS1, M1, M2, M3, and T1.
The order of the launch template overrides to use in fulfilling On-Demand capacity. If you specify lowestPrice , Spot Fleet uses price to determine the order, launching the lowest price first. If you specify prioritized , Spot Fleet uses the priority that you assign to each Spot Fleet launch template override, launching the highest priority first. If you do not specify a value, Spot Fleet defaults to lowestPrice .
The maximum amount per hour for On-Demand Instances that you're willing to pay. You can use the onDemandMaxTotalPrice parameter, the spotMaxTotalPrice parameter, or both parameters to ensure that your fleet cost does not exceed your budget. If you set a maximum price per hour for the On-Demand Instances and Spot Instances in your request, Spot Fleet will launch instances until it reaches the maximum amount you're willing to pay. When the maximum amount you're willing to pay is reached, the fleet stops launching instances even if it hasn’t met the target capacity.
The number of On-Demand units to request. You can choose to set the target capacity in terms of instances or a performance characteristic that is important to your application workload, such as vCPUs, memory, or I/O. If the request type is maintain , you can specify a target capacity of 0 and add capacity later.
Indicates whether Spot Fleet should replace unhealthy instances.
The strategies for managing your Spot Instances that are at an elevated risk of being interrupted.
The maximum amount per hour for Spot Instances that you're willing to pay. You can use the spotMaxTotalPrice parameter, the onDemandMaxTotalPrice parameter, or both parameters to ensure that your fleet cost does not exceed your budget. If you set a maximum price per hour for the On-Demand Instances and Spot Instances in your request, Spot Fleet will launch instances until it reaches the maximum amount you're willing to pay. When the maximum amount you're willing to pay is reached, the fleet stops launching instances even if it hasn’t met the target capacity.
The key-value pair for tagging the Spot Fleet request on creation. The value for ResourceType must be spot-fleet-request , otherwise the Spot Fleet request fails. To tag instances at launch, specify the tags in the launch template (valid only if you use LaunchTemplateConfigs ) or in the [SpotFleetTagSpecification](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_SpotFleetTagSpecification.html) (valid only if you use LaunchSpecifications ). For information about tagging after launch, see Tag your resources .
The number of units to request for the Spot Fleet. You can choose to set the target capacity in terms of instances or a performance characteristic that is important to your application workload, such as vCPUs, memory, or I/O. If the request type is maintain , you can specify a target capacity of 0 and add capacity later.
The unit for the target capacity. You can specify this parameter only when using attribute-based instance type selection. Default: units (the number of instances)
Indicates whether running Spot Instances are terminated when the Spot Fleet request expires.
The type of request. Indicates whether the Spot Fleet only requests the target capacity or also attempts to maintain it. When this value is request , the Spot Fleet only places the required requests. It does not attempt to replenish Spot Instances if capacity is diminished, nor does it submit requests in alternative Spot pools if capacity is not available. When this value is maintain , the Spot Fleet maintains the target capacity. The Spot Fleet places the required requests to meet capacity and automatically replenishes any interrupted instances. Default: maintain . instant is listed but is not used by Spot Fleet.
The end date and time of the request, in UTC format ( YYYY - MM - DD T HH : MM : SS Z). After the end date and time, no new Spot Instance requests are placed or able to fulfill the request. If no value is specified, the Spot Fleet request remains until you cancel it.