POST /#Action=ModifySpotFleetRequest

Modifies the specified Spot Fleet request.

You can only modify a Spot Fleet request of type maintain.

While the Spot Fleet request is being modified, it is in the modifying state.

To scale up your Spot Fleet, increase its target capacity. The Spot Fleet launches the additional Spot Instances according to the allocation strategy for the Spot Fleet request. If the allocation strategy is lowestPrice, the Spot Fleet launches instances using the Spot Instance pool with the lowest price. If the allocation strategy is diversified, the Spot Fleet distributes the instances across the Spot Instance pools. If the allocation strategy is capacityOptimized, Spot Fleet launches instances from Spot Instance pools with optimal capacity for the number of instances that are launching.

To scale down your Spot Fleet, decrease its target capacity. First, the Spot Fleet cancels any open requests that exceed the new target capacity. You can request that the Spot Fleet terminate Spot Instances until the size of the fleet no longer exceeds the new target capacity. If the allocation strategy is lowestPrice, the Spot Fleet terminates the instances with the highest price per unit. If the allocation strategy is capacityOptimized, the Spot Fleet terminates the instances in the Spot Instance pools that have the least available Spot Instance capacity. If the allocation strategy is diversified, the Spot Fleet terminates instances across the Spot Instance pools. Alternatively, you can request that the Spot Fleet keep the fleet at its current size, but not replace any Spot Instances that are interrupted or that you terminate manually.

If you are finished with your Spot Fleet for now, but will use it again later, you can set the target capacity to 0.

Servers

Request headers

Name Type Required Description
X-Amz-Content-Sha256 String No
X-Amz-Credential String No
Content-Type String Yes The media type of the request body.

Default value: "text/xml"

X-Amz-Date String No
X-Amz-Algorithm String No
X-Amz-SignedHeaders String No
X-Amz-Security-Token String No
X-Amz-Signature String No

Query parameters

Name Type Required Description
Version String Yes

Possible values:

  • "2016-11-15"
Action String Yes

Possible values:

  • "ModifySpotFleetRequest"

Request body fields

Name Type Required Description
LaunchTemplateConfigs[] Array No

The launch template and overrides. You can only use this parameter if you specified a launch template (LaunchTemplateConfigs) in your Spot Fleet request. If you specified LaunchSpecifications in your Spot Fleet request, then omit this parameter.

TargetCapacity Integer No

The size of the fleet.

SpotFleetRequestId String Yes

The ID of the Spot Fleet request.

Context String No

Reserved.

OnDemandTargetCapacity Integer No

The number of On-Demand Instances in the fleet.

ExcessCapacityTerminationPolicy String No

Indicates whether running instances should be terminated if the target capacity of the Spot Fleet request is decreased below the current size of the Spot Fleet.

Supported only for fleets of type maintain.

Possible values:

  • "noTermination"
  • "default"

How to start integrating

  1. Add HTTP Task to your workflow definition.
  2. Search for the API you want to integrate with and click on the name.
    • This loads the API reference documentation and prepares the Http request settings.
  3. Click Test request to test run your request to the API and see the API's response.