---
title: Getting Started with Datadog
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: Docs > Infrastructure > Datadog Resource Catalog
---

# aws_ec2_fleet{% #aws_ec2_fleet %}

## `account_id`{% #account_id %}

**Type**: `STRING`

## `activity_status`{% #activity_status %}

**Type**: `STRING`**Provider name**: `ActivityStatus`**Description**: The progress of the EC2 Fleet. If there is an error, the status is `error`. After all requests are placed, the status is `pending_fulfillment`. If the size of the EC2 Fleet is equal to or greater than its target capacity, the status is `fulfilled`. If the size of the EC2 Fleet is decreased, the status is `pending_termination` while instances are terminating.

## `client_token`{% #client_token %}

**Type**: `STRING`**Provider name**: `ClientToken`**Description**: Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see [Ensuring idempotency](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/Run_Instance_Idempotency.html). Constraints: Maximum 64 ASCII characters

## `context`{% #context %}

**Type**: `STRING`**Provider name**: `Context`**Description**: Reserved.

## `create_time`{% #create_time %}

**Type**: `TIMESTAMP`**Provider name**: `CreateTime`**Description**: The creation date and time of the EC2 Fleet.

## `errors`{% #errors %}

**Type**: `UNORDERED_LIST_STRUCT`**Provider name**: `Errors`**Description**: Information about the instances that could not be launched by the fleet. Valid only when Type is set to `instant`.

- `error_code`**Type**: `STRING`**Provider name**: `ErrorCode`**Description**: The error code that indicates why the instance could not be launched. For more information about error codes, see [Error codes](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/errors-overview.html.html).
- `error_message`**Type**: `STRING`**Provider name**: `ErrorMessage`**Description**: The error message that describes why the instance could not be launched. For more information about error messages, see [Error codes](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/errors-overview.html.html).
- `launch_template_and_overrides`**Type**: `STRUCT`**Provider name**: `LaunchTemplateAndOverrides`**Description**: The launch templates and overrides that were used for launching the instances. The values that you specify in the Overrides replace the values in the launch template.
  - `launch_template_specification`**Type**: `STRUCT`**Provider name**: `LaunchTemplateSpecification`**Description**: The launch template.
    - `launch_template_id`**Type**: `STRING`**Provider name**: `LaunchTemplateId`**Description**: The ID of the launch template. You must specify the `LaunchTemplateId` or the `LaunchTemplateName`, but not both.
    - `launch_template_name`**Type**: `STRING`**Provider name**: `LaunchTemplateName`**Description**: The name of the launch template. You must specify the `LaunchTemplateName` or the `LaunchTemplateId`, but not both.
    - `version`**Type**: `STRING`**Provider name**: `Version`**Description**: The launch template version number, `$Latest`, or `$Default`. You must specify a value, otherwise the request fails. If the value is `$Latest`, Amazon EC2 uses the latest version of the launch template. If the value is `$Default`, Amazon EC2 uses the default version of the launch template.
  - `overrides`**Type**: `STRUCT`**Provider name**: `Overrides`**Description**: Any parameters that you specify override the same parameters in the launch template.
    - `availability_zone`**Type**: `STRING`**Provider name**: `AvailabilityZone`**Description**: The Availability Zone in which to launch the instances.
    - `image_id`**Type**: `STRING`**Provider name**: `ImageId`**Description**: The ID of the AMI in the format `ami-17characters00000`. Alternatively, you can specify a Systems Manager parameter, using one of the following formats. The Systems Manager parameter will resolve to an AMI ID on launch. To reference a public parameter:
      - `resolve:ssm: public-parameter`
To reference a parameter stored in the same account:
      - `resolve:ssm: parameter-name`
      - `resolve:ssm: parameter-name:version-number`
      - `resolve:ssm: parameter-name:label`
To reference a parameter shared from another Amazon Web Services account:
      - `resolve:ssm: parameter-ARN`
      - `resolve:ssm: parameter-ARN:version-number`
      - `resolve:ssm: parameter-ARN:label`
For more information, see [Use a Systems Manager parameter instead of an AMI ID](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/create-launch-template.html#use-an-ssm-parameter-instead-of-an-ami-id) in the Amazon EC2 User Guide.This parameter is only available for fleets of type `instant`. For fleets of type `maintain` and `request`, you must specify the AMI ID in the launch template.
    - `instance_requirements`**Type**: `STRUCT`**Provider name**: `InstanceRequirements`**Description**: The attributes for the instance types. When you specify instance attributes, Amazon EC2 will identify instance types with those attributes.If you specify `InstanceRequirements`, you can't specify `InstanceType`.
      - `accelerator_count`**Type**: `STRUCT`**Provider name**: `AcceleratorCount`**Description**: The minimum and maximum number of accelerators (GPUs, FPGAs, or Amazon Web Services Inferentia chips) on an instance. To exclude accelerator-enabled instance types, set `Max` to `0`.**Default**: No minimum or maximum limits
        - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum number of accelerators. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum number of accelerators. If this parameter is not specified, there is no minimum limit.
      - `accelerator_manufacturers`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `AcceleratorManufacturers`**Description**: Indicates whether instance types must have accelerators by specific manufacturers.
        - For instance types with Amazon Web Services devices, specify `amazon-web-services`.
        - For instance types with AMD devices, specify `amd`.
        - For instance types with Habana devices, specify `habana`.
        - For instance types with NVIDIA devices, specify `nvidia`.
        - For instance types with Xilinx devices, specify `xilinx`.
**Default**: Any manufacturer
      - `accelerator_names`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `AcceleratorNames`**Description**: The accelerators that must be on the instance type.
        - For instance types with NVIDIA A10G GPUs, specify `a10g`.
        - For instance types with NVIDIA A100 GPUs, specify `a100`.
        - For instance types with NVIDIA H100 GPUs, specify `h100`.
        - For instance types with Amazon Web Services Inferentia chips, specify `inferentia`.
        - For instance types with NVIDIA GRID K520 GPUs, specify `k520`.
        - For instance types with NVIDIA K80 GPUs, specify `k80`.
        - For instance types with NVIDIA M60 GPUs, specify `m60`.
        - For instance types with AMD Radeon Pro V520 GPUs, specify `radeon-pro-v520`.
        - For instance types with NVIDIA T4 GPUs, specify `t4`.
        - For instance types with NVIDIA T4G GPUs, specify `t4g`.
        - For instance types with Xilinx VU9P FPGAs, specify `vu9p`.
        - For instance types with NVIDIA V100 GPUs, specify `v100`.
**Default**: Any accelerator
      - `accelerator_total_memory_mib`**Type**: `STRUCT`**Provider name**: `AcceleratorTotalMemoryMiB`**Description**: The minimum and maximum amount of total accelerator memory, in MiB.**Default**: No minimum or maximum limits
        - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum amount of accelerator memory, in MiB. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum amount of accelerator memory, in MiB. If this parameter is not specified, there is no minimum limit.
      - `accelerator_types`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `AcceleratorTypes`**Description**: The accelerator types that must be on the instance type.
        - For instance types with FPGA accelerators, specify `fpga`.
        - For instance types with GPU accelerators, specify `gpu`.
        - For instance types with Inference accelerators, specify `inference`.
**Default**: Any accelerator type
      - `allowed_instance_types`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `AllowedInstanceTypes`**Description**: The instance types to apply your specified attributes against. All other instance types are ignored, even if they match your specified attributes. You can use strings with one or more wild cards, represented by an asterisk (``), to allow an instance type, size, or generation. The following are examples: `m5.8xlarge`, `c5.`, `m5a.`, `r*`, `3`. For example, if you specify `c5*`,Amazon EC2 will allow the entire C5 instance family, which includes all C5a and C5n instance types. If you specify `m5a.*`, Amazon EC2 will allow all the M5a instance types, but not the M5n instance types.If you specify `AllowedInstanceTypes`, you can't specify `ExcludedInstanceTypes`.**Default**: All instance types
      - `bare_metal`**Type**: `STRING`**Provider name**: `BareMetal`**Description**: Indicates whether bare metal instance types must be included, excluded, or required.
        - To include bare metal instance types, specify `included`.
        - To require only bare metal instance types, specify `required`.
        - To exclude bare metal instance types, specify `excluded`.
**Default**: `excluded`
      - `baseline_ebs_bandwidth_mbps`**Type**: `STRUCT`**Provider name**: `BaselineEbsBandwidthMbps`**Description**: The minimum and maximum baseline bandwidth to Amazon EBS, in Mbps. For more information, see [Amazon EBS–optimized instances](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-optimized.html) in the Amazon EC2 User Guide.**Default**: No minimum or maximum limits
        - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum baseline bandwidth, in Mbps. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum baseline bandwidth, in Mbps. If this parameter is not specified, there is no minimum limit.
      - `baseline_performance_factors`**Type**: `STRUCT`**Provider name**: `BaselinePerformanceFactors`**Description**: The baseline performance to consider, using an instance family as a baseline reference. The instance family establishes the lowest acceptable level of performance. Amazon EC2 uses this baseline to guide instance type selection, but there is no guarantee that the selected instance types will always exceed the baseline for every application. Currently, this parameter only supports CPU performance as a baseline performance factor. For more information, see [Performance protection](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-fleet-attribute-based-instance-type-selection.html#ec2fleet-abis-performance-protection) in the Amazon EC2 User Guide.
        - `cpu`**Type**: `STRUCT`**Provider name**: `Cpu`**Description**: The CPU performance to consider, using an instance family as the baseline reference.
          - `references`**Type**: `UNORDERED_LIST_STRUCT`**Provider name**: `References`**Description**: Specify an instance family to use as the baseline reference for CPU performance. All instance types that match your specified attributes will be compared against the CPU performance of the referenced instance family, regardless of CPU manufacturer or architecture differences.Currently, only one instance family can be specified in the list.
            - `instance_family`**Type**: `STRING`**Provider name**: `InstanceFamily`**Description**: The instance family to use as a baseline reference.Ensure that you specify the correct value for the instance family. The instance family is everything before the period (`.`) in the instance type name. For example, in the instance type `c6i.large`, the instance family is `c6i`, not `c6`. For more information, see [Amazon EC2 instance type naming conventions](https://docs.aws.amazon.com/ec2/latest/instancetypes/instance-type-names.html) in Amazon EC2 Instance Types.The following instance families are not supported for performance protection:
              - `c1`
              - `g3` | `g3s`
              - `hpc7g`
              - `m1` | `m2`
              - `mac1` | `mac2` | `mac2-m1ultra` | `mac2-m2` | `mac2-m2pro`
              - `p3dn` | `p4d` | `p5`
              - `t1`
              - `u-12tb1` | `u-18tb1` | `u-24tb1` | `u-3tb1` | `u-6tb1` | `u-9tb1` | `u7i-12tb` | `u7in-16tb` | `u7in-24tb` | `u7in-32tb`
If you enable performance protection by specifying a supported instance family, the returned instance types will exclude the above unsupported instance families. If you specify an unsupported instance family as a value for baseline performance, the API returns an empty response for and an exception for , , , and .
      - `burstable_performance`**Type**: `STRING`**Provider name**: `BurstablePerformance`**Description**: Indicates whether burstable performance T instance types are included, excluded, or required. For more information, see [Burstable performance instances](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/burstable-performance-instances.html).
        - To include burstable performance instance types, specify `included`.
        - To require only burstable performance instance types, specify `required`.
        - To exclude burstable performance instance types, specify `excluded`.
**Default**: `excluded`
      - `cpu_manufacturers`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `CpuManufacturers`**Description**: The CPU manufacturers to include.
        - For instance types with Intel CPUs, specify `intel`.
        - For instance types with AMD CPUs, specify `amd`.
        - For instance types with Amazon Web Services CPUs, specify `amazon-web-services`.
        - For instance types with Apple CPUs, specify `apple`.
Don't confuse the CPU manufacturer with the CPU architecture. Instances will be launched with a compatible CPU architecture based on the Amazon Machine Image (AMI) that you specify in your launch template.**Default**: Any manufacturer
      - `excluded_instance_types`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `ExcludedInstanceTypes`**Description**: The instance types to exclude. You can use strings with one or more wild cards, represented by an asterisk (``), to exclude an instance type, size, or generation. The following are examples: `m5.8xlarge`, `c5.`, `m5a.`, `r*`, `3`. For example, if you specify `c5*`,Amazon EC2 will exclude the entire C5 instance family, which includes all C5a and C5n instance types. If you specify `m5a.*`, Amazon EC2 will exclude all the M5a instance types, but not the M5n instance types.If you specify `ExcludedInstanceTypes`, you can't specify `AllowedInstanceTypes`.**Default**: No excluded instance types
      - `instance_generations`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `InstanceGenerations`**Description**: Indicates whether current or previous generation instance types are included. The current generation instance types are recommended for use. Current generation instance types are typically the latest two to three generations in each instance family. For more information, see [Instance types](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html) in the Amazon EC2 User Guide. For current generation instance types, specify `current`. For previous generation instance types, specify `previous`.**Default**: Current and previous generation instance types
      - `local_storage`**Type**: `STRING`**Provider name**: `LocalStorage`**Description**: Indicates whether instance types with instance store volumes are included, excluded, or required. For more information, [Amazon EC2 instance store](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html) in the Amazon EC2 User Guide.
        - To include instance types with instance store volumes, specify `included`.
        - To require only instance types with instance store volumes, specify `required`.
        - To exclude instance types with instance store volumes, specify `excluded`.
**Default**: `included`
      - `local_storage_types`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `LocalStorageTypes`**Description**: The type of local storage that is required.
        - For instance types with hard disk drive (HDD) storage, specify `hdd`.
        - For instance types with solid state drive (SSD) storage, specify `ssd`.
**Default**: `hdd` and `ssd`
      - `max_spot_price_as_percentage_of_optimal_on_demand_price`**Type**: `INT32`**Provider name**: `MaxSpotPriceAsPercentageOfOptimalOnDemandPrice`**Description**: [Price protection] The price protection threshold for Spot Instances, as a percentage of an identified On-Demand price. The identified On-Demand price is the price of the lowest priced current generation C, M, or R instance type with your specified attributes. If no current generation C, M, or R instance type matches your attributes, then the identified price is from the lowest priced current generation instance types, and failing that, from the lowest priced previous generation instance types that match your attributes. When Amazon EC2 selects instance types with your attributes, it will exclude instance types whose price exceeds your specified threshold. The parameter accepts an integer, which Amazon EC2 interprets as a percentage. If you set `TargetCapacityUnitType` to `vcpu` or `memory-mib`, the price protection threshold is based on the per vCPU or per memory price instead of the per instance price.Only one of `SpotMaxPricePercentageOverLowestPrice` or `MaxSpotPriceAsPercentageOfOptimalOnDemandPrice` can be specified. If you don't specify either, Amazon EC2 will automatically apply optimal price protection to consistently select from a wide range of instance types. To indicate no price protection threshold for Spot Instances, meaning you want to consider all instance types that match your attributes, include one of these parameters and specify a high value, such as `999999`.
      - `memory_gib_per_v_cpu`**Type**: `STRUCT`**Provider name**: `MemoryGiBPerVCpu`**Description**: The minimum and maximum amount of memory per vCPU, in GiB.**Default**: No minimum or maximum limits
        - `max`**Type**: `DOUBLE`**Provider name**: `Max`**Description**: The maximum amount of memory per vCPU, in GiB. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `DOUBLE`**Provider name**: `Min`**Description**: The minimum amount of memory per vCPU, in GiB. If this parameter is not specified, there is no minimum limit.
      - `memory_mib`**Type**: `STRUCT`**Provider name**: `MemoryMiB`**Description**: The minimum and maximum amount of memory, in MiB.
        - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum amount of memory, in MiB. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum amount of memory, in MiB. If this parameter is not specified, there is no minimum limit.
      - `network_bandwidth_gbps`**Type**: `STRUCT`**Provider name**: `NetworkBandwidthGbps`**Description**: The minimum and maximum amount of network bandwidth, in gigabits per second (Gbps).**Default**: No minimum or maximum limits
        - `max`**Type**: `DOUBLE`**Provider name**: `Max`**Description**: The maximum amount of network bandwidth, in Gbps. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `DOUBLE`**Provider name**: `Min`**Description**: The minimum amount of network bandwidth, in Gbps. If this parameter is not specified, there is no minimum limit.
      - `network_interface_count`**Type**: `STRUCT`**Provider name**: `NetworkInterfaceCount`**Description**: The minimum and maximum number of network interfaces.**Default**: No minimum or maximum limits
        - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum number of network interfaces. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum number of network interfaces. If this parameter is not specified, there is no minimum limit.
      - `on_demand_max_price_percentage_over_lowest_price`**Type**: `INT32`**Provider name**: `OnDemandMaxPricePercentageOverLowestPrice`**Description**: [Price protection] The price protection threshold for On-Demand Instances, as a percentage higher than an identified On-Demand price. The identified On-Demand price is the price of the lowest priced current generation C, M, or R instance type with your specified attributes. When Amazon EC2 selects instance types with your attributes, it will exclude instance types whose price exceeds your specified threshold. The parameter accepts an integer, which Amazon EC2 interprets as a percentage. To turn off price protection, specify a high value, such as `999999`. This parameter is not supported for [GetSpotPlacementScores](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetSpotPlacementScores.html) and [GetInstanceTypesFromInstanceRequirements](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetInstanceTypesFromInstanceRequirements.html).If you set `TargetCapacityUnitType` to `vcpu` or `memory-mib`, the price protection threshold is applied based on the per-vCPU or per-memory price instead of the per-instance price.**Default**: `20`
      - `require_hibernate_support`**Type**: `BOOLEAN`**Provider name**: `RequireHibernateSupport`**Description**: Indicates whether instance types must support hibernation for On-Demand Instances. This parameter is not supported for [GetSpotPlacementScores](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetSpotPlacementScores.html).**Default**: `false`
      - `spot_max_price_percentage_over_lowest_price`**Type**: `INT32`**Provider name**: `SpotMaxPricePercentageOverLowestPrice`**Description**: [Price protection] The price protection threshold for Spot Instances, as a percentage higher than an identified Spot price. The identified Spot price is the Spot price of the lowest priced current generation C, M, or R instance type with your specified attributes. If no current generation C, M, or R instance type matches your attributes, then the identified Spot price is from the lowest priced current generation instance types, and failing that, from the lowest priced previous generation instance types that match your attributes. When Amazon EC2 selects instance types with your attributes, it will exclude instance types whose Spot price exceeds your specified threshold. The parameter accepts an integer, which Amazon EC2 interprets as a percentage. If you set `TargetCapacityUnitType` to `vcpu` or `memory-mib`, the price protection threshold is applied based on the per-vCPU or per-memory price instead of the per-instance price. This parameter is not supported for [GetSpotPlacementScores](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetSpotPlacementScores.html) and [GetInstanceTypesFromInstanceRequirements](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetInstanceTypesFromInstanceRequirements.html).Only one of `SpotMaxPricePercentageOverLowestPrice` or `MaxSpotPriceAsPercentageOfOptimalOnDemandPrice` can be specified. If you don't specify either, Amazon EC2 will automatically apply optimal price protection to consistently select from a wide range of instance types. To indicate no price protection threshold for Spot Instances, meaning you want to consider all instance types that match your attributes, include one of these parameters and specify a high value, such as `999999`.**Default**: `100`
      - `total_local_storage_gb`**Type**: `STRUCT`**Provider name**: `TotalLocalStorageGB`**Description**: The minimum and maximum amount of total local storage, in GB.**Default**: No minimum or maximum limits
        - `max`**Type**: `DOUBLE`**Provider name**: `Max`**Description**: The maximum amount of total local storage, in GB. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `DOUBLE`**Provider name**: `Min`**Description**: The minimum amount of total local storage, in GB. If this parameter is not specified, there is no minimum limit.
      - `v_cpu_count`**Type**: `STRUCT`**Provider name**: `VCpuCount`**Description**: The minimum and maximum number of vCPUs.
        - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum number of vCPUs. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum number of vCPUs. If the value is `0`, there is no minimum limit.
    - `instance_type`**Type**: `STRING`**Provider name**: `InstanceType`**Description**: The instance type. `mac1.metal` is not supported as a launch template override.If you specify `InstanceType`, you can't specify `InstanceRequirements`.
    - `max_price`**Type**: `STRING`**Provider name**: `MaxPrice`**Description**: The maximum price per unit hour that you are willing to pay for a Spot Instance. We do not recommend using this parameter because it can lead to increased interruptions. If you do not specify this parameter, you will pay the current Spot price.If you specify a maximum price, your instances will be interrupted more frequently than if you do not specify this parameter.
    - `placement`**Type**: `STRUCT`**Provider name**: `Placement`**Description**: The location where the instance launched, if applicable.
      - `group_name`**Type**: `STRING`**Provider name**: `GroupName`**Description**: The name of the placement group that the instance is in.
    - `priority`**Type**: `DOUBLE`**Provider name**: `Priority`**Description**: The priority for the launch template override. The highest priority is launched first. If the On-Demand `AllocationStrategy` is set to `prioritized`, EC2 Fleet uses priority to determine which launch template override to use first in fulfilling On-Demand capacity. If the Spot `AllocationStrategy` is set to `capacity-optimized-prioritized`, EC2 Fleet uses priority on a best-effort basis to determine which launch template override to use in fulfilling Spot capacity, but optimizes for capacity first. Valid values are whole numbers starting at `0`. The lower the number, the higher the priority. If no number is set, the override has the lowest priority. You can set the same priority for different launch template overrides.
    - `subnet_id`**Type**: `STRING`**Provider name**: `SubnetId`**Description**: The ID of the subnet in which to launch the instances.
    - `weighted_capacity`**Type**: `DOUBLE`**Provider name**: `WeightedCapacity`**Description**: The number of units provided by the specified instance type. These are the same units that you chose to set the target capacity in terms of instances, or a performance characteristic such as vCPUs, memory, or I/O. If the target capacity divided by this value is not a whole number, Amazon EC2 rounds the number of instances to the next whole number. If this value is not specified, the default is 1.When specifying weights, the price used in the `lowest-price` and `price-capacity-optimized` allocation strategies is per unit hour (where the instance price is divided by the specified weight). However, if all the specified weights are above the requested `TargetCapacity`, resulting in only 1 instance being launched, the price used is per instance hour.
- `lifecycle`**Type**: `STRING`**Provider name**: `Lifecycle`**Description**: Indicates if the instance that could not be launched was a Spot Instance or On-Demand Instance.

## `excess_capacity_termination_policy`{% #excess_capacity_termination_policy %}

**Type**: `STRING`**Provider name**: `ExcessCapacityTerminationPolicy`**Description**: Indicates whether running instances should be terminated if the target capacity of the EC2 Fleet is decreased below the current size of the EC2 Fleet. Supported only for fleets of type `maintain`.

## `fleet_id`{% #fleet_id %}

**Type**: `STRING`**Provider name**: `FleetId`**Description**: The ID of the EC2 Fleet.

## `fleet_state`{% #fleet_state %}

**Type**: `STRING`**Provider name**: `FleetState`**Description**: The state of the EC2 Fleet.

## `fulfilled_capacity`{% #fulfilled_capacity %}

**Type**: `DOUBLE`**Provider name**: `FulfilledCapacity`**Description**: The number of units fulfilled by this request compared to the set target capacity.

## `fulfilled_on_demand_capacity`{% #fulfilled_on_demand_capacity %}

**Type**: `DOUBLE`**Provider name**: `FulfilledOnDemandCapacity`**Description**: The number of units fulfilled by this request compared to the set target On-Demand capacity.

## `instances`{% #instances %}

**Type**: `UNORDERED_LIST_STRUCT`**Provider name**: `Instances`**Description**: Information about the instances that were launched by the fleet. Valid only when Type is set to `instant`.

- `instance_ids`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `InstanceIds`**Description**: The IDs of the instances.
- `instance_type`**Type**: `STRING`**Provider name**: `InstanceType`**Description**: The instance type.
- `launch_template_and_overrides`**Type**: `STRUCT`**Provider name**: `LaunchTemplateAndOverrides`**Description**: The launch templates and overrides that were used for launching the instances. The values that you specify in the Overrides replace the values in the launch template.
  - `launch_template_specification`**Type**: `STRUCT`**Provider name**: `LaunchTemplateSpecification`**Description**: The launch template.
    - `launch_template_id`**Type**: `STRING`**Provider name**: `LaunchTemplateId`**Description**: The ID of the launch template. You must specify the `LaunchTemplateId` or the `LaunchTemplateName`, but not both.
    - `launch_template_name`**Type**: `STRING`**Provider name**: `LaunchTemplateName`**Description**: The name of the launch template. You must specify the `LaunchTemplateName` or the `LaunchTemplateId`, but not both.
    - `version`**Type**: `STRING`**Provider name**: `Version`**Description**: The launch template version number, `$Latest`, or `$Default`. You must specify a value, otherwise the request fails. If the value is `$Latest`, Amazon EC2 uses the latest version of the launch template. If the value is `$Default`, Amazon EC2 uses the default version of the launch template.
  - `overrides`**Type**: `STRUCT`**Provider name**: `Overrides`**Description**: Any parameters that you specify override the same parameters in the launch template.
    - `availability_zone`**Type**: `STRING`**Provider name**: `AvailabilityZone`**Description**: The Availability Zone in which to launch the instances.
    - `image_id`**Type**: `STRING`**Provider name**: `ImageId`**Description**: The ID of the AMI in the format `ami-17characters00000`. Alternatively, you can specify a Systems Manager parameter, using one of the following formats. The Systems Manager parameter will resolve to an AMI ID on launch. To reference a public parameter:
      - `resolve:ssm: public-parameter`
To reference a parameter stored in the same account:
      - `resolve:ssm: parameter-name`
      - `resolve:ssm: parameter-name:version-number`
      - `resolve:ssm: parameter-name:label`
To reference a parameter shared from another Amazon Web Services account:
      - `resolve:ssm: parameter-ARN`
      - `resolve:ssm: parameter-ARN:version-number`
      - `resolve:ssm: parameter-ARN:label`
For more information, see [Use a Systems Manager parameter instead of an AMI ID](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/create-launch-template.html#use-an-ssm-parameter-instead-of-an-ami-id) in the Amazon EC2 User Guide.This parameter is only available for fleets of type `instant`. For fleets of type `maintain` and `request`, you must specify the AMI ID in the launch template.
    - `instance_requirements`**Type**: `STRUCT`**Provider name**: `InstanceRequirements`**Description**: The attributes for the instance types. When you specify instance attributes, Amazon EC2 will identify instance types with those attributes.If you specify `InstanceRequirements`, you can't specify `InstanceType`.
      - `accelerator_count`**Type**: `STRUCT`**Provider name**: `AcceleratorCount`**Description**: The minimum and maximum number of accelerators (GPUs, FPGAs, or Amazon Web Services Inferentia chips) on an instance. To exclude accelerator-enabled instance types, set `Max` to `0`.**Default**: No minimum or maximum limits
        - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum number of accelerators. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum number of accelerators. If this parameter is not specified, there is no minimum limit.
      - `accelerator_manufacturers`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `AcceleratorManufacturers`**Description**: Indicates whether instance types must have accelerators by specific manufacturers.
        - For instance types with Amazon Web Services devices, specify `amazon-web-services`.
        - For instance types with AMD devices, specify `amd`.
        - For instance types with Habana devices, specify `habana`.
        - For instance types with NVIDIA devices, specify `nvidia`.
        - For instance types with Xilinx devices, specify `xilinx`.
**Default**: Any manufacturer
      - `accelerator_names`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `AcceleratorNames`**Description**: The accelerators that must be on the instance type.
        - For instance types with NVIDIA A10G GPUs, specify `a10g`.
        - For instance types with NVIDIA A100 GPUs, specify `a100`.
        - For instance types with NVIDIA H100 GPUs, specify `h100`.
        - For instance types with Amazon Web Services Inferentia chips, specify `inferentia`.
        - For instance types with NVIDIA GRID K520 GPUs, specify `k520`.
        - For instance types with NVIDIA K80 GPUs, specify `k80`.
        - For instance types with NVIDIA M60 GPUs, specify `m60`.
        - For instance types with AMD Radeon Pro V520 GPUs, specify `radeon-pro-v520`.
        - For instance types with NVIDIA T4 GPUs, specify `t4`.
        - For instance types with NVIDIA T4G GPUs, specify `t4g`.
        - For instance types with Xilinx VU9P FPGAs, specify `vu9p`.
        - For instance types with NVIDIA V100 GPUs, specify `v100`.
**Default**: Any accelerator
      - `accelerator_total_memory_mib`**Type**: `STRUCT`**Provider name**: `AcceleratorTotalMemoryMiB`**Description**: The minimum and maximum amount of total accelerator memory, in MiB.**Default**: No minimum or maximum limits
        - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum amount of accelerator memory, in MiB. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum amount of accelerator memory, in MiB. If this parameter is not specified, there is no minimum limit.
      - `accelerator_types`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `AcceleratorTypes`**Description**: The accelerator types that must be on the instance type.
        - For instance types with FPGA accelerators, specify `fpga`.
        - For instance types with GPU accelerators, specify `gpu`.
        - For instance types with Inference accelerators, specify `inference`.
**Default**: Any accelerator type
      - `allowed_instance_types`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `AllowedInstanceTypes`**Description**: The instance types to apply your specified attributes against. All other instance types are ignored, even if they match your specified attributes. You can use strings with one or more wild cards, represented by an asterisk (``), to allow an instance type, size, or generation. The following are examples: `m5.8xlarge`, `c5.`, `m5a.`, `r*`, `3`. For example, if you specify `c5*`,Amazon EC2 will allow the entire C5 instance family, which includes all C5a and C5n instance types. If you specify `m5a.*`, Amazon EC2 will allow all the M5a instance types, but not the M5n instance types.If you specify `AllowedInstanceTypes`, you can't specify `ExcludedInstanceTypes`.**Default**: All instance types
      - `bare_metal`**Type**: `STRING`**Provider name**: `BareMetal`**Description**: Indicates whether bare metal instance types must be included, excluded, or required.
        - To include bare metal instance types, specify `included`.
        - To require only bare metal instance types, specify `required`.
        - To exclude bare metal instance types, specify `excluded`.
**Default**: `excluded`
      - `baseline_ebs_bandwidth_mbps`**Type**: `STRUCT`**Provider name**: `BaselineEbsBandwidthMbps`**Description**: The minimum and maximum baseline bandwidth to Amazon EBS, in Mbps. For more information, see [Amazon EBS–optimized instances](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-optimized.html) in the Amazon EC2 User Guide.**Default**: No minimum or maximum limits
        - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum baseline bandwidth, in Mbps. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum baseline bandwidth, in Mbps. If this parameter is not specified, there is no minimum limit.
      - `baseline_performance_factors`**Type**: `STRUCT`**Provider name**: `BaselinePerformanceFactors`**Description**: The baseline performance to consider, using an instance family as a baseline reference. The instance family establishes the lowest acceptable level of performance. Amazon EC2 uses this baseline to guide instance type selection, but there is no guarantee that the selected instance types will always exceed the baseline for every application. Currently, this parameter only supports CPU performance as a baseline performance factor. For more information, see [Performance protection](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-fleet-attribute-based-instance-type-selection.html#ec2fleet-abis-performance-protection) in the Amazon EC2 User Guide.
        - `cpu`**Type**: `STRUCT`**Provider name**: `Cpu`**Description**: The CPU performance to consider, using an instance family as the baseline reference.
          - `references`**Type**: `UNORDERED_LIST_STRUCT`**Provider name**: `References`**Description**: Specify an instance family to use as the baseline reference for CPU performance. All instance types that match your specified attributes will be compared against the CPU performance of the referenced instance family, regardless of CPU manufacturer or architecture differences.Currently, only one instance family can be specified in the list.
            - `instance_family`**Type**: `STRING`**Provider name**: `InstanceFamily`**Description**: The instance family to use as a baseline reference.Ensure that you specify the correct value for the instance family. The instance family is everything before the period (`.`) in the instance type name. For example, in the instance type `c6i.large`, the instance family is `c6i`, not `c6`. For more information, see [Amazon EC2 instance type naming conventions](https://docs.aws.amazon.com/ec2/latest/instancetypes/instance-type-names.html) in Amazon EC2 Instance Types.The following instance families are not supported for performance protection:
              - `c1`
              - `g3` | `g3s`
              - `hpc7g`
              - `m1` | `m2`
              - `mac1` | `mac2` | `mac2-m1ultra` | `mac2-m2` | `mac2-m2pro`
              - `p3dn` | `p4d` | `p5`
              - `t1`
              - `u-12tb1` | `u-18tb1` | `u-24tb1` | `u-3tb1` | `u-6tb1` | `u-9tb1` | `u7i-12tb` | `u7in-16tb` | `u7in-24tb` | `u7in-32tb`
If you enable performance protection by specifying a supported instance family, the returned instance types will exclude the above unsupported instance families. If you specify an unsupported instance family as a value for baseline performance, the API returns an empty response for and an exception for , , , and .
      - `burstable_performance`**Type**: `STRING`**Provider name**: `BurstablePerformance`**Description**: Indicates whether burstable performance T instance types are included, excluded, or required. For more information, see [Burstable performance instances](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/burstable-performance-instances.html).
        - To include burstable performance instance types, specify `included`.
        - To require only burstable performance instance types, specify `required`.
        - To exclude burstable performance instance types, specify `excluded`.
**Default**: `excluded`
      - `cpu_manufacturers`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `CpuManufacturers`**Description**: The CPU manufacturers to include.
        - For instance types with Intel CPUs, specify `intel`.
        - For instance types with AMD CPUs, specify `amd`.
        - For instance types with Amazon Web Services CPUs, specify `amazon-web-services`.
        - For instance types with Apple CPUs, specify `apple`.
Don't confuse the CPU manufacturer with the CPU architecture. Instances will be launched with a compatible CPU architecture based on the Amazon Machine Image (AMI) that you specify in your launch template.**Default**: Any manufacturer
      - `excluded_instance_types`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `ExcludedInstanceTypes`**Description**: The instance types to exclude. You can use strings with one or more wild cards, represented by an asterisk (``), to exclude an instance type, size, or generation. The following are examples: `m5.8xlarge`, `c5.`, `m5a.`, `r*`, `3`. For example, if you specify `c5*`,Amazon EC2 will exclude the entire C5 instance family, which includes all C5a and C5n instance types. If you specify `m5a.*`, Amazon EC2 will exclude all the M5a instance types, but not the M5n instance types.If you specify `ExcludedInstanceTypes`, you can't specify `AllowedInstanceTypes`.**Default**: No excluded instance types
      - `instance_generations`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `InstanceGenerations`**Description**: Indicates whether current or previous generation instance types are included. The current generation instance types are recommended for use. Current generation instance types are typically the latest two to three generations in each instance family. For more information, see [Instance types](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html) in the Amazon EC2 User Guide. For current generation instance types, specify `current`. For previous generation instance types, specify `previous`.**Default**: Current and previous generation instance types
      - `local_storage`**Type**: `STRING`**Provider name**: `LocalStorage`**Description**: Indicates whether instance types with instance store volumes are included, excluded, or required. For more information, [Amazon EC2 instance store](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html) in the Amazon EC2 User Guide.
        - To include instance types with instance store volumes, specify `included`.
        - To require only instance types with instance store volumes, specify `required`.
        - To exclude instance types with instance store volumes, specify `excluded`.
**Default**: `included`
      - `local_storage_types`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `LocalStorageTypes`**Description**: The type of local storage that is required.
        - For instance types with hard disk drive (HDD) storage, specify `hdd`.
        - For instance types with solid state drive (SSD) storage, specify `ssd`.
**Default**: `hdd` and `ssd`
      - `max_spot_price_as_percentage_of_optimal_on_demand_price`**Type**: `INT32`**Provider name**: `MaxSpotPriceAsPercentageOfOptimalOnDemandPrice`**Description**: [Price protection] The price protection threshold for Spot Instances, as a percentage of an identified On-Demand price. The identified On-Demand price is the price of the lowest priced current generation C, M, or R instance type with your specified attributes. If no current generation C, M, or R instance type matches your attributes, then the identified price is from the lowest priced current generation instance types, and failing that, from the lowest priced previous generation instance types that match your attributes. When Amazon EC2 selects instance types with your attributes, it will exclude instance types whose price exceeds your specified threshold. The parameter accepts an integer, which Amazon EC2 interprets as a percentage. If you set `TargetCapacityUnitType` to `vcpu` or `memory-mib`, the price protection threshold is based on the per vCPU or per memory price instead of the per instance price.Only one of `SpotMaxPricePercentageOverLowestPrice` or `MaxSpotPriceAsPercentageOfOptimalOnDemandPrice` can be specified. If you don't specify either, Amazon EC2 will automatically apply optimal price protection to consistently select from a wide range of instance types. To indicate no price protection threshold for Spot Instances, meaning you want to consider all instance types that match your attributes, include one of these parameters and specify a high value, such as `999999`.
      - `memory_gib_per_v_cpu`**Type**: `STRUCT`**Provider name**: `MemoryGiBPerVCpu`**Description**: The minimum and maximum amount of memory per vCPU, in GiB.**Default**: No minimum or maximum limits
        - `max`**Type**: `DOUBLE`**Provider name**: `Max`**Description**: The maximum amount of memory per vCPU, in GiB. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `DOUBLE`**Provider name**: `Min`**Description**: The minimum amount of memory per vCPU, in GiB. If this parameter is not specified, there is no minimum limit.
      - `memory_mib`**Type**: `STRUCT`**Provider name**: `MemoryMiB`**Description**: The minimum and maximum amount of memory, in MiB.
        - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum amount of memory, in MiB. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum amount of memory, in MiB. If this parameter is not specified, there is no minimum limit.
      - `network_bandwidth_gbps`**Type**: `STRUCT`**Provider name**: `NetworkBandwidthGbps`**Description**: The minimum and maximum amount of network bandwidth, in gigabits per second (Gbps).**Default**: No minimum or maximum limits
        - `max`**Type**: `DOUBLE`**Provider name**: `Max`**Description**: The maximum amount of network bandwidth, in Gbps. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `DOUBLE`**Provider name**: `Min`**Description**: The minimum amount of network bandwidth, in Gbps. If this parameter is not specified, there is no minimum limit.
      - `network_interface_count`**Type**: `STRUCT`**Provider name**: `NetworkInterfaceCount`**Description**: The minimum and maximum number of network interfaces.**Default**: No minimum or maximum limits
        - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum number of network interfaces. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum number of network interfaces. If this parameter is not specified, there is no minimum limit.
      - `on_demand_max_price_percentage_over_lowest_price`**Type**: `INT32`**Provider name**: `OnDemandMaxPricePercentageOverLowestPrice`**Description**: [Price protection] The price protection threshold for On-Demand Instances, as a percentage higher than an identified On-Demand price. The identified On-Demand price is the price of the lowest priced current generation C, M, or R instance type with your specified attributes. When Amazon EC2 selects instance types with your attributes, it will exclude instance types whose price exceeds your specified threshold. The parameter accepts an integer, which Amazon EC2 interprets as a percentage. To turn off price protection, specify a high value, such as `999999`. This parameter is not supported for [GetSpotPlacementScores](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetSpotPlacementScores.html) and [GetInstanceTypesFromInstanceRequirements](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetInstanceTypesFromInstanceRequirements.html).If you set `TargetCapacityUnitType` to `vcpu` or `memory-mib`, the price protection threshold is applied based on the per-vCPU or per-memory price instead of the per-instance price.**Default**: `20`
      - `require_hibernate_support`**Type**: `BOOLEAN`**Provider name**: `RequireHibernateSupport`**Description**: Indicates whether instance types must support hibernation for On-Demand Instances. This parameter is not supported for [GetSpotPlacementScores](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetSpotPlacementScores.html).**Default**: `false`
      - `spot_max_price_percentage_over_lowest_price`**Type**: `INT32`**Provider name**: `SpotMaxPricePercentageOverLowestPrice`**Description**: [Price protection] The price protection threshold for Spot Instances, as a percentage higher than an identified Spot price. The identified Spot price is the Spot price of the lowest priced current generation C, M, or R instance type with your specified attributes. If no current generation C, M, or R instance type matches your attributes, then the identified Spot price is from the lowest priced current generation instance types, and failing that, from the lowest priced previous generation instance types that match your attributes. When Amazon EC2 selects instance types with your attributes, it will exclude instance types whose Spot price exceeds your specified threshold. The parameter accepts an integer, which Amazon EC2 interprets as a percentage. If you set `TargetCapacityUnitType` to `vcpu` or `memory-mib`, the price protection threshold is applied based on the per-vCPU or per-memory price instead of the per-instance price. This parameter is not supported for [GetSpotPlacementScores](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetSpotPlacementScores.html) and [GetInstanceTypesFromInstanceRequirements](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetInstanceTypesFromInstanceRequirements.html).Only one of `SpotMaxPricePercentageOverLowestPrice` or `MaxSpotPriceAsPercentageOfOptimalOnDemandPrice` can be specified. If you don't specify either, Amazon EC2 will automatically apply optimal price protection to consistently select from a wide range of instance types. To indicate no price protection threshold for Spot Instances, meaning you want to consider all instance types that match your attributes, include one of these parameters and specify a high value, such as `999999`.**Default**: `100`
      - `total_local_storage_gb`**Type**: `STRUCT`**Provider name**: `TotalLocalStorageGB`**Description**: The minimum and maximum amount of total local storage, in GB.**Default**: No minimum or maximum limits
        - `max`**Type**: `DOUBLE`**Provider name**: `Max`**Description**: The maximum amount of total local storage, in GB. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `DOUBLE`**Provider name**: `Min`**Description**: The minimum amount of total local storage, in GB. If this parameter is not specified, there is no minimum limit.
      - `v_cpu_count`**Type**: `STRUCT`**Provider name**: `VCpuCount`**Description**: The minimum and maximum number of vCPUs.
        - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum number of vCPUs. If this parameter is not specified, there is no maximum limit.
        - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum number of vCPUs. If the value is `0`, there is no minimum limit.
    - `instance_type`**Type**: `STRING`**Provider name**: `InstanceType`**Description**: The instance type. `mac1.metal` is not supported as a launch template override.If you specify `InstanceType`, you can't specify `InstanceRequirements`.
    - `max_price`**Type**: `STRING`**Provider name**: `MaxPrice`**Description**: The maximum price per unit hour that you are willing to pay for a Spot Instance. We do not recommend using this parameter because it can lead to increased interruptions. If you do not specify this parameter, you will pay the current Spot price.If you specify a maximum price, your instances will be interrupted more frequently than if you do not specify this parameter.
    - `placement`**Type**: `STRUCT`**Provider name**: `Placement`**Description**: The location where the instance launched, if applicable.
      - `group_name`**Type**: `STRING`**Provider name**: `GroupName`**Description**: The name of the placement group that the instance is in.
    - `priority`**Type**: `DOUBLE`**Provider name**: `Priority`**Description**: The priority for the launch template override. The highest priority is launched first. If the On-Demand `AllocationStrategy` is set to `prioritized`, EC2 Fleet uses priority to determine which launch template override to use first in fulfilling On-Demand capacity. If the Spot `AllocationStrategy` is set to `capacity-optimized-prioritized`, EC2 Fleet uses priority on a best-effort basis to determine which launch template override to use in fulfilling Spot capacity, but optimizes for capacity first. Valid values are whole numbers starting at `0`. The lower the number, the higher the priority. If no number is set, the override has the lowest priority. You can set the same priority for different launch template overrides.
    - `subnet_id`**Type**: `STRING`**Provider name**: `SubnetId`**Description**: The ID of the subnet in which to launch the instances.
    - `weighted_capacity`**Type**: `DOUBLE`**Provider name**: `WeightedCapacity`**Description**: The number of units provided by the specified instance type. These are the same units that you chose to set the target capacity in terms of instances, or a performance characteristic such as vCPUs, memory, or I/O. If the target capacity divided by this value is not a whole number, Amazon EC2 rounds the number of instances to the next whole number. If this value is not specified, the default is 1.When specifying weights, the price used in the `lowest-price` and `price-capacity-optimized` allocation strategies is per unit hour (where the instance price is divided by the specified weight). However, if all the specified weights are above the requested `TargetCapacity`, resulting in only 1 instance being launched, the price used is per instance hour.
- `lifecycle`**Type**: `STRING`**Provider name**: `Lifecycle`**Description**: Indicates if the instance that was launched is a Spot Instance or On-Demand Instance.
- `platform`**Type**: `STRING`**Provider name**: `Platform`**Description**: The value is `windows` for Windows instances in an EC2 Fleet. Otherwise, the value is blank.

## `launch_template_configs`{% #launch_template_configs %}

**Type**: `UNORDERED_LIST_STRUCT`**Provider name**: `LaunchTemplateConfigs`**Description**: The launch template and overrides.

- `launch_template_specification`**Type**: `STRUCT`**Provider name**: `LaunchTemplateSpecification`**Description**: The launch template.
  - `launch_template_id`**Type**: `STRING`**Provider name**: `LaunchTemplateId`**Description**: The ID of the launch template. You must specify the `LaunchTemplateId` or the `LaunchTemplateName`, but not both.
  - `launch_template_name`**Type**: `STRING`**Provider name**: `LaunchTemplateName`**Description**: The name of the launch template. You must specify the `LaunchTemplateName` or the `LaunchTemplateId`, but not both.
  - `version`**Type**: `STRING`**Provider name**: `Version`**Description**: The launch template version number, `$Latest`, or `$Default`. You must specify a value, otherwise the request fails. If the value is `$Latest`, Amazon EC2 uses the latest version of the launch template. If the value is `$Default`, Amazon EC2 uses the default version of the launch template.
- `overrides`**Type**: `UNORDERED_LIST_STRUCT`**Provider name**: `Overrides`**Description**: Any parameters that you specify override the same parameters in the launch template.
  - `availability_zone`**Type**: `STRING`**Provider name**: `AvailabilityZone`**Description**: The Availability Zone in which to launch the instances.
  - `image_id`**Type**: `STRING`**Provider name**: `ImageId`**Description**: The ID of the AMI in the format `ami-17characters00000`. Alternatively, you can specify a Systems Manager parameter, using one of the following formats. The Systems Manager parameter will resolve to an AMI ID on launch. To reference a public parameter:
    - `resolve:ssm: public-parameter`
To reference a parameter stored in the same account:
    - `resolve:ssm: parameter-name`
    - `resolve:ssm: parameter-name:version-number`
    - `resolve:ssm: parameter-name:label`
To reference a parameter shared from another Amazon Web Services account:
    - `resolve:ssm: parameter-ARN`
    - `resolve:ssm: parameter-ARN:version-number`
    - `resolve:ssm: parameter-ARN:label`
For more information, see [Use a Systems Manager parameter instead of an AMI ID](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/create-launch-template.html#use-an-ssm-parameter-instead-of-an-ami-id) in the Amazon EC2 User Guide.This parameter is only available for fleets of type `instant`. For fleets of type `maintain` and `request`, you must specify the AMI ID in the launch template.
  - `instance_requirements`**Type**: `STRUCT`**Provider name**: `InstanceRequirements`**Description**: The attributes for the instance types. When you specify instance attributes, Amazon EC2 will identify instance types with those attributes.If you specify `InstanceRequirements`, you can't specify `InstanceType`.
    - `accelerator_count`**Type**: `STRUCT`**Provider name**: `AcceleratorCount`**Description**: The minimum and maximum number of accelerators (GPUs, FPGAs, or Amazon Web Services Inferentia chips) on an instance. To exclude accelerator-enabled instance types, set `Max` to `0`.**Default**: No minimum or maximum limits
      - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum number of accelerators. If this parameter is not specified, there is no maximum limit.
      - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum number of accelerators. If this parameter is not specified, there is no minimum limit.
    - `accelerator_manufacturers`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `AcceleratorManufacturers`**Description**: Indicates whether instance types must have accelerators by specific manufacturers.
      - For instance types with Amazon Web Services devices, specify `amazon-web-services`.
      - For instance types with AMD devices, specify `amd`.
      - For instance types with Habana devices, specify `habana`.
      - For instance types with NVIDIA devices, specify `nvidia`.
      - For instance types with Xilinx devices, specify `xilinx`.
**Default**: Any manufacturer
    - `accelerator_names`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `AcceleratorNames`**Description**: The accelerators that must be on the instance type.
      - For instance types with NVIDIA A10G GPUs, specify `a10g`.
      - For instance types with NVIDIA A100 GPUs, specify `a100`.
      - For instance types with NVIDIA H100 GPUs, specify `h100`.
      - For instance types with Amazon Web Services Inferentia chips, specify `inferentia`.
      - For instance types with NVIDIA GRID K520 GPUs, specify `k520`.
      - For instance types with NVIDIA K80 GPUs, specify `k80`.
      - For instance types with NVIDIA M60 GPUs, specify `m60`.
      - For instance types with AMD Radeon Pro V520 GPUs, specify `radeon-pro-v520`.
      - For instance types with NVIDIA T4 GPUs, specify `t4`.
      - For instance types with NVIDIA T4G GPUs, specify `t4g`.
      - For instance types with Xilinx VU9P FPGAs, specify `vu9p`.
      - For instance types with NVIDIA V100 GPUs, specify `v100`.
**Default**: Any accelerator
    - `accelerator_total_memory_mib`**Type**: `STRUCT`**Provider name**: `AcceleratorTotalMemoryMiB`**Description**: The minimum and maximum amount of total accelerator memory, in MiB.**Default**: No minimum or maximum limits
      - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum amount of accelerator memory, in MiB. If this parameter is not specified, there is no maximum limit.
      - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum amount of accelerator memory, in MiB. If this parameter is not specified, there is no minimum limit.
    - `accelerator_types`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `AcceleratorTypes`**Description**: The accelerator types that must be on the instance type.
      - For instance types with FPGA accelerators, specify `fpga`.
      - For instance types with GPU accelerators, specify `gpu`.
      - For instance types with Inference accelerators, specify `inference`.
**Default**: Any accelerator type
    - `allowed_instance_types`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `AllowedInstanceTypes`**Description**: The instance types to apply your specified attributes against. All other instance types are ignored, even if they match your specified attributes. You can use strings with one or more wild cards, represented by an asterisk (``), to allow an instance type, size, or generation. The following are examples: `m5.8xlarge`, `c5.`, `m5a.`, `r*`, `3`. For example, if you specify `c5*`,Amazon EC2 will allow the entire C5 instance family, which includes all C5a and C5n instance types. If you specify `m5a.*`, Amazon EC2 will allow all the M5a instance types, but not the M5n instance types.If you specify `AllowedInstanceTypes`, you can't specify `ExcludedInstanceTypes`.**Default**: All instance types
    - `bare_metal`**Type**: `STRING`**Provider name**: `BareMetal`**Description**: Indicates whether bare metal instance types must be included, excluded, or required.
      - To include bare metal instance types, specify `included`.
      - To require only bare metal instance types, specify `required`.
      - To exclude bare metal instance types, specify `excluded`.
**Default**: `excluded`
    - `baseline_ebs_bandwidth_mbps`**Type**: `STRUCT`**Provider name**: `BaselineEbsBandwidthMbps`**Description**: The minimum and maximum baseline bandwidth to Amazon EBS, in Mbps. For more information, see [Amazon EBS–optimized instances](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-optimized.html) in the Amazon EC2 User Guide.**Default**: No minimum or maximum limits
      - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum baseline bandwidth, in Mbps. If this parameter is not specified, there is no maximum limit.
      - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum baseline bandwidth, in Mbps. If this parameter is not specified, there is no minimum limit.
    - `baseline_performance_factors`**Type**: `STRUCT`**Provider name**: `BaselinePerformanceFactors`**Description**: The baseline performance to consider, using an instance family as a baseline reference. The instance family establishes the lowest acceptable level of performance. Amazon EC2 uses this baseline to guide instance type selection, but there is no guarantee that the selected instance types will always exceed the baseline for every application. Currently, this parameter only supports CPU performance as a baseline performance factor. For more information, see [Performance protection](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-fleet-attribute-based-instance-type-selection.html#ec2fleet-abis-performance-protection) in the Amazon EC2 User Guide.
      - `cpu`**Type**: `STRUCT`**Provider name**: `Cpu`**Description**: The CPU performance to consider, using an instance family as the baseline reference.
        - `references`**Type**: `UNORDERED_LIST_STRUCT`**Provider name**: `References`**Description**: Specify an instance family to use as the baseline reference for CPU performance. All instance types that match your specified attributes will be compared against the CPU performance of the referenced instance family, regardless of CPU manufacturer or architecture differences.Currently, only one instance family can be specified in the list.
          - `instance_family`**Type**: `STRING`**Provider name**: `InstanceFamily`**Description**: The instance family to use as a baseline reference.Ensure that you specify the correct value for the instance family. The instance family is everything before the period (`.`) in the instance type name. For example, in the instance type `c6i.large`, the instance family is `c6i`, not `c6`. For more information, see [Amazon EC2 instance type naming conventions](https://docs.aws.amazon.com/ec2/latest/instancetypes/instance-type-names.html) in Amazon EC2 Instance Types.The following instance families are not supported for performance protection:
            - `c1`
            - `g3` | `g3s`
            - `hpc7g`
            - `m1` | `m2`
            - `mac1` | `mac2` | `mac2-m1ultra` | `mac2-m2` | `mac2-m2pro`
            - `p3dn` | `p4d` | `p5`
            - `t1`
            - `u-12tb1` | `u-18tb1` | `u-24tb1` | `u-3tb1` | `u-6tb1` | `u-9tb1` | `u7i-12tb` | `u7in-16tb` | `u7in-24tb` | `u7in-32tb`
If you enable performance protection by specifying a supported instance family, the returned instance types will exclude the above unsupported instance families. If you specify an unsupported instance family as a value for baseline performance, the API returns an empty response for and an exception for , , , and .
    - `burstable_performance`**Type**: `STRING`**Provider name**: `BurstablePerformance`**Description**: Indicates whether burstable performance T instance types are included, excluded, or required. For more information, see [Burstable performance instances](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/burstable-performance-instances.html).
      - To include burstable performance instance types, specify `included`.
      - To require only burstable performance instance types, specify `required`.
      - To exclude burstable performance instance types, specify `excluded`.
**Default**: `excluded`
    - `cpu_manufacturers`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `CpuManufacturers`**Description**: The CPU manufacturers to include.
      - For instance types with Intel CPUs, specify `intel`.
      - For instance types with AMD CPUs, specify `amd`.
      - For instance types with Amazon Web Services CPUs, specify `amazon-web-services`.
      - For instance types with Apple CPUs, specify `apple`.
Don't confuse the CPU manufacturer with the CPU architecture. Instances will be launched with a compatible CPU architecture based on the Amazon Machine Image (AMI) that you specify in your launch template.**Default**: Any manufacturer
    - `excluded_instance_types`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `ExcludedInstanceTypes`**Description**: The instance types to exclude. You can use strings with one or more wild cards, represented by an asterisk (``), to exclude an instance type, size, or generation. The following are examples: `m5.8xlarge`, `c5.`, `m5a.`, `r*`, `3`. For example, if you specify `c5*`,Amazon EC2 will exclude the entire C5 instance family, which includes all C5a and C5n instance types. If you specify `m5a.*`, Amazon EC2 will exclude all the M5a instance types, but not the M5n instance types.If you specify `ExcludedInstanceTypes`, you can't specify `AllowedInstanceTypes`.**Default**: No excluded instance types
    - `instance_generations`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `InstanceGenerations`**Description**: Indicates whether current or previous generation instance types are included. The current generation instance types are recommended for use. Current generation instance types are typically the latest two to three generations in each instance family. For more information, see [Instance types](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html) in the Amazon EC2 User Guide. For current generation instance types, specify `current`. For previous generation instance types, specify `previous`.**Default**: Current and previous generation instance types
    - `local_storage`**Type**: `STRING`**Provider name**: `LocalStorage`**Description**: Indicates whether instance types with instance store volumes are included, excluded, or required. For more information, [Amazon EC2 instance store](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html) in the Amazon EC2 User Guide.
      - To include instance types with instance store volumes, specify `included`.
      - To require only instance types with instance store volumes, specify `required`.
      - To exclude instance types with instance store volumes, specify `excluded`.
**Default**: `included`
    - `local_storage_types`**Type**: `UNORDERED_LIST_STRING`**Provider name**: `LocalStorageTypes`**Description**: The type of local storage that is required.
      - For instance types with hard disk drive (HDD) storage, specify `hdd`.
      - For instance types with solid state drive (SSD) storage, specify `ssd`.
**Default**: `hdd` and `ssd`
    - `max_spot_price_as_percentage_of_optimal_on_demand_price`**Type**: `INT32`**Provider name**: `MaxSpotPriceAsPercentageOfOptimalOnDemandPrice`**Description**: [Price protection] The price protection threshold for Spot Instances, as a percentage of an identified On-Demand price. The identified On-Demand price is the price of the lowest priced current generation C, M, or R instance type with your specified attributes. If no current generation C, M, or R instance type matches your attributes, then the identified price is from the lowest priced current generation instance types, and failing that, from the lowest priced previous generation instance types that match your attributes. When Amazon EC2 selects instance types with your attributes, it will exclude instance types whose price exceeds your specified threshold. The parameter accepts an integer, which Amazon EC2 interprets as a percentage. If you set `TargetCapacityUnitType` to `vcpu` or `memory-mib`, the price protection threshold is based on the per vCPU or per memory price instead of the per instance price.Only one of `SpotMaxPricePercentageOverLowestPrice` or `MaxSpotPriceAsPercentageOfOptimalOnDemandPrice` can be specified. If you don't specify either, Amazon EC2 will automatically apply optimal price protection to consistently select from a wide range of instance types. To indicate no price protection threshold for Spot Instances, meaning you want to consider all instance types that match your attributes, include one of these parameters and specify a high value, such as `999999`.
    - `memory_gib_per_v_cpu`**Type**: `STRUCT`**Provider name**: `MemoryGiBPerVCpu`**Description**: The minimum and maximum amount of memory per vCPU, in GiB.**Default**: No minimum or maximum limits
      - `max`**Type**: `DOUBLE`**Provider name**: `Max`**Description**: The maximum amount of memory per vCPU, in GiB. If this parameter is not specified, there is no maximum limit.
      - `min`**Type**: `DOUBLE`**Provider name**: `Min`**Description**: The minimum amount of memory per vCPU, in GiB. If this parameter is not specified, there is no minimum limit.
    - `memory_mib`**Type**: `STRUCT`**Provider name**: `MemoryMiB`**Description**: The minimum and maximum amount of memory, in MiB.
      - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum amount of memory, in MiB. If this parameter is not specified, there is no maximum limit.
      - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum amount of memory, in MiB. If this parameter is not specified, there is no minimum limit.
    - `network_bandwidth_gbps`**Type**: `STRUCT`**Provider name**: `NetworkBandwidthGbps`**Description**: The minimum and maximum amount of network bandwidth, in gigabits per second (Gbps).**Default**: No minimum or maximum limits
      - `max`**Type**: `DOUBLE`**Provider name**: `Max`**Description**: The maximum amount of network bandwidth, in Gbps. If this parameter is not specified, there is no maximum limit.
      - `min`**Type**: `DOUBLE`**Provider name**: `Min`**Description**: The minimum amount of network bandwidth, in Gbps. If this parameter is not specified, there is no minimum limit.
    - `network_interface_count`**Type**: `STRUCT`**Provider name**: `NetworkInterfaceCount`**Description**: The minimum and maximum number of network interfaces.**Default**: No minimum or maximum limits
      - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum number of network interfaces. If this parameter is not specified, there is no maximum limit.
      - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum number of network interfaces. If this parameter is not specified, there is no minimum limit.
    - `on_demand_max_price_percentage_over_lowest_price`**Type**: `INT32`**Provider name**: `OnDemandMaxPricePercentageOverLowestPrice`**Description**: [Price protection] The price protection threshold for On-Demand Instances, as a percentage higher than an identified On-Demand price. The identified On-Demand price is the price of the lowest priced current generation C, M, or R instance type with your specified attributes. When Amazon EC2 selects instance types with your attributes, it will exclude instance types whose price exceeds your specified threshold. The parameter accepts an integer, which Amazon EC2 interprets as a percentage. To turn off price protection, specify a high value, such as `999999`. This parameter is not supported for [GetSpotPlacementScores](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetSpotPlacementScores.html) and [GetInstanceTypesFromInstanceRequirements](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetInstanceTypesFromInstanceRequirements.html).If you set `TargetCapacityUnitType` to `vcpu` or `memory-mib`, the price protection threshold is applied based on the per-vCPU or per-memory price instead of the per-instance price.**Default**: `20`
    - `require_hibernate_support`**Type**: `BOOLEAN`**Provider name**: `RequireHibernateSupport`**Description**: Indicates whether instance types must support hibernation for On-Demand Instances. This parameter is not supported for [GetSpotPlacementScores](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetSpotPlacementScores.html).**Default**: `false`
    - `spot_max_price_percentage_over_lowest_price`**Type**: `INT32`**Provider name**: `SpotMaxPricePercentageOverLowestPrice`**Description**: [Price protection] The price protection threshold for Spot Instances, as a percentage higher than an identified Spot price. The identified Spot price is the Spot price of the lowest priced current generation C, M, or R instance type with your specified attributes. If no current generation C, M, or R instance type matches your attributes, then the identified Spot price is from the lowest priced current generation instance types, and failing that, from the lowest priced previous generation instance types that match your attributes. When Amazon EC2 selects instance types with your attributes, it will exclude instance types whose Spot price exceeds your specified threshold. The parameter accepts an integer, which Amazon EC2 interprets as a percentage. If you set `TargetCapacityUnitType` to `vcpu` or `memory-mib`, the price protection threshold is applied based on the per-vCPU or per-memory price instead of the per-instance price. This parameter is not supported for [GetSpotPlacementScores](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetSpotPlacementScores.html) and [GetInstanceTypesFromInstanceRequirements](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetInstanceTypesFromInstanceRequirements.html).Only one of `SpotMaxPricePercentageOverLowestPrice` or `MaxSpotPriceAsPercentageOfOptimalOnDemandPrice` can be specified. If you don't specify either, Amazon EC2 will automatically apply optimal price protection to consistently select from a wide range of instance types. To indicate no price protection threshold for Spot Instances, meaning you want to consider all instance types that match your attributes, include one of these parameters and specify a high value, such as `999999`.**Default**: `100`
    - `total_local_storage_gb`**Type**: `STRUCT`**Provider name**: `TotalLocalStorageGB`**Description**: The minimum and maximum amount of total local storage, in GB.**Default**: No minimum or maximum limits
      - `max`**Type**: `DOUBLE`**Provider name**: `Max`**Description**: The maximum amount of total local storage, in GB. If this parameter is not specified, there is no maximum limit.
      - `min`**Type**: `DOUBLE`**Provider name**: `Min`**Description**: The minimum amount of total local storage, in GB. If this parameter is not specified, there is no minimum limit.
    - `v_cpu_count`**Type**: `STRUCT`**Provider name**: `VCpuCount`**Description**: The minimum and maximum number of vCPUs.
      - `max`**Type**: `INT32`**Provider name**: `Max`**Description**: The maximum number of vCPUs. If this parameter is not specified, there is no maximum limit.
      - `min`**Type**: `INT32`**Provider name**: `Min`**Description**: The minimum number of vCPUs. If the value is `0`, there is no minimum limit.
  - `instance_type`**Type**: `STRING`**Provider name**: `InstanceType`**Description**: The instance type. `mac1.metal` is not supported as a launch template override.If you specify `InstanceType`, you can't specify `InstanceRequirements`.
  - `max_price`**Type**: `STRING`**Provider name**: `MaxPrice`**Description**: The maximum price per unit hour that you are willing to pay for a Spot Instance. We do not recommend using this parameter because it can lead to increased interruptions. If you do not specify this parameter, you will pay the current Spot price.If you specify a maximum price, your instances will be interrupted more frequently than if you do not specify this parameter.
  - `placement`**Type**: `STRUCT`**Provider name**: `Placement`**Description**: The location where the instance launched, if applicable.
    - `group_name`**Type**: `STRING`**Provider name**: `GroupName`**Description**: The name of the placement group that the instance is in.
  - `priority`**Type**: `DOUBLE`**Provider name**: `Priority`**Description**: The priority for the launch template override. The highest priority is launched first. If the On-Demand `AllocationStrategy` is set to `prioritized`, EC2 Fleet uses priority to determine which launch template override to use first in fulfilling On-Demand capacity. If the Spot `AllocationStrategy` is set to `capacity-optimized-prioritized`, EC2 Fleet uses priority on a best-effort basis to determine which launch template override to use in fulfilling Spot capacity, but optimizes for capacity first. Valid values are whole numbers starting at `0`. The lower the number, the higher the priority. If no number is set, the override has the lowest priority. You can set the same priority for different launch template overrides.
  - `subnet_id`**Type**: `STRING`**Provider name**: `SubnetId`**Description**: The ID of the subnet in which to launch the instances.
  - `weighted_capacity`**Type**: `DOUBLE`**Provider name**: `WeightedCapacity`**Description**: The number of units provided by the specified instance type. These are the same units that you chose to set the target capacity in terms of instances, or a performance characteristic such as vCPUs, memory, or I/O. If the target capacity divided by this value is not a whole number, Amazon EC2 rounds the number of instances to the next whole number. If this value is not specified, the default is 1.When specifying weights, the price used in the `lowest-price` and `price-capacity-optimized` allocation strategies is per unit hour (where the instance price is divided by the specified weight). However, if all the specified weights are above the requested `TargetCapacity`, resulting in only 1 instance being launched, the price used is per instance hour.

## `on_demand_options`{% #on_demand_options %}

**Type**: `STRUCT`**Provider name**: `OnDemandOptions`**Description**: The allocation strategy of On-Demand Instances in an EC2 Fleet.

- `allocation_strategy`**Type**: `STRING`**Provider name**: `AllocationStrategy`**Description**: 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`
- `capacity_reservation_options`**Type**: `STRUCT`**Provider name**: `CapacityReservationOptions`**Description**: The strategy for using unused Capacity Reservations for fulfilling On-Demand capacity. Supported only for fleets of type `instant`.
  - `usage_strategy`**Type**: `STRING`**Provider name**: `UsageStrategy`**Description**: Indicates whether to use unused Capacity Reservations for fulfilling On-Demand capacity. If you specify `use-capacity-reservations-first`, the fleet uses unused Capacity Reservations to fulfill On-Demand capacity up to the target On-Demand capacity. If multiple instance pools have unused Capacity Reservations, the On-Demand allocation strategy (`lowest-price` or `prioritized`) is applied. If the number of unused Capacity Reservations is less than the On-Demand target capacity, the remaining On-Demand target capacity is launched according to the On-Demand allocation strategy (`lowest-price` or `prioritized`). If you do not specify a value, the fleet fulfils the On-Demand capacity according to the chosen On-Demand allocation strategy.
- `max_total_price`**Type**: `STRING`**Provider name**: `MaxTotalPrice`**Description**: The maximum amount per hour for On-Demand Instances that you're willing to pay.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](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/burstable-performance-instances-unlimited-mode-concepts.html#unlimited-mode-surplus-credits) in the Amazon EC2 User Guide.
- `min_target_capacity`**Type**: `INT32`**Provider name**: `MinTargetCapacity`**Description**: 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`
- `single_availability_zone`**Type**: `BOOLEAN`**Provider name**: `SingleAvailabilityZone`**Description**: Indicates that the fleet launches all On-Demand Instances into a single Availability Zone. Supported only for fleets of type `instant`.
- `single_instance_type`**Type**: `BOOLEAN`**Provider name**: `SingleInstanceType`**Description**: 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`.

## `replace_unhealthy_instances`{% #replace_unhealthy_instances %}

**Type**: `BOOLEAN`**Provider name**: `ReplaceUnhealthyInstances`**Description**: Indicates whether EC2 Fleet should replace unhealthy Spot Instances. Supported only for fleets of type `maintain`. For more information, see [EC2 Fleet health checks](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/manage-ec2-fleet.html#ec2-fleet-health-checks) in the Amazon EC2 User Guide.

## `spot_options`{% #spot_options %}

**Type**: `STRUCT`**Provider name**: `SpotOptions`**Description**: The configuration of Spot Instances in an EC2 Fleet.

- `allocation_strategy`**Type**: `STRING`**Provider name**: `AllocationStrategy`**Description**: The strategy that determines how to allocate the target Spot Instance capacity across the Spot Instance pools specified by the EC2 Fleet launch configuration. For more information, see [Allocation strategies for Spot Instances](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-fleet-allocation-strategy.html) in the Amazon EC2 User Guide.
  {% dl %}
  
  {% dt %}
price-capacity-optimized (recommended)
  {% /dt %}

  {% dd %}
EC2 Fleet identifies the pools with the highest capacity availability for the number of instances that are launching. This means that we will request Spot Instances from the pools that we believe have the lowest chance of interruption in the near term. EC2 Fleet then requests Spot Instances from the lowest priced of these pools.
  {% /dd %}

  {% dt %}
capacity-optimized
  {% /dt %}

  {% dd %}
  EC2 Fleet identifies the pools with the highest capacity availability for the number of instances that are launching. This means that we will request Spot Instances from the pools that we believe have the lowest chance of interruption in the near term. To give certain instance types a higher chance of launching first, use `capacity-optimized-prioritized`. Set a priority for each instance type by using the `Priority` parameter for `LaunchTemplateOverrides`. You can assign the same priority to different `LaunchTemplateOverrides`. EC2 implements the priorities on a best-effort basis, but optimizes for capacity first. `capacity-optimized-prioritized` is supported only if your EC2 Fleet uses a launch template. Note that if the On-Demand `AllocationStrategy` is set to `prioritized`, the same priority is applied when fulfilling On-Demand capacity.
    {% /dd %}

  {% dt %}
diversified
  {% /dt %}

  {% dd %}
EC2 Fleet requests instances from all of the Spot Instance pools that you specify.
  {% /dd %}

  {% dt %}
lowest-price (not recommended)
  {% /dt %}

  {% dd %}
  We don't recommend the `lowest-price` allocation strategy because it has the highest risk of interruption for your Spot Instances.EC2 Fleet requests instances from the lowest priced Spot Instance pool that has available capacity. If the lowest priced pool doesn't have available capacity, the Spot Instances come from the next lowest priced pool that has available capacity. If a pool runs out of capacity before fulfilling your desired capacity, EC2 Fleet will continue to fulfill your request by drawing from the next lowest priced pool. To ensure that your desired capacity is met, you might receive Spot Instances from several pools. Because this strategy only considers instance price and not capacity availability, it might lead to high interruption rates.
    {% /dd %}

    {% /dl %}
**Default**: `lowest-price`
- `instance_interruption_behavior`**Type**: `STRING`**Provider name**: `InstanceInterruptionBehavior`**Description**: The behavior when a Spot Instance is interrupted.**Default**: `terminate`
- `instance_pools_to_use_count`**Type**: `INT32`**Provider name**: `InstancePoolsToUseCount`**Description**: The number of Spot pools across which to allocate your target Spot capacity. Supported only when `AllocationStrategy` is set to `lowest-price`. EC2 Fleet selects the cheapest Spot pools and evenly allocates your target Spot capacity across the number of Spot pools that you specify. Note that EC2 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, EC2 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.
- `maintenance_strategies`**Type**: `STRUCT`**Provider name**: `MaintenanceStrategies`**Description**: The strategies for managing your workloads on your Spot Instances that will be interrupted. Currently only the capacity rebalance strategy is available.
  - `capacity_rebalance`**Type**: `STRUCT`**Provider name**: `CapacityRebalance`**Description**: The strategy to use when Amazon EC2 emits a signal that your Spot Instance is at an elevated risk of being interrupted.
    - `replacement_strategy`**Type**: `STRING`**Provider name**: `ReplacementStrategy`**Description**: The replacement strategy to use. Only available for fleets of type `maintain`. `launch` - EC2 Fleet launches a new replacement Spot Instance when a rebalance notification is emitted for an existing Spot Instance in the fleet. EC2 Fleet does not terminate the instances that receive a rebalance notification. You can terminate the old instances, or you can leave them running. You are charged for all instances while they are running. `launch-before-terminate` - EC2 Fleet launches a new replacement Spot Instance when a rebalance notification is emitted for an existing Spot Instance in the fleet, and then, after a delay that you specify (in `TerminationDelay`), terminates the instances that received a rebalance notification.
    - `termination_delay`**Type**: `INT32`**Provider name**: `TerminationDelay`**Description**: The amount of time (in seconds) that Amazon EC2 waits before terminating the old Spot Instance after launching a new replacement Spot Instance. Required when `ReplacementStrategy` is set to `launch-before-terminate`. Not valid when `ReplacementStrategy` is set to `launch`. Valid values: Minimum value of `120` seconds. Maximum value of `7200` seconds.
- `max_total_price`**Type**: `STRING`**Provider name**: `MaxTotalPrice`**Description**: The maximum amount per hour for Spot Instances that you're willing to pay. We do not recommend using this parameter because it can lead to increased interruptions. If you do not specify this parameter, you will pay the current Spot price.If you specify a maximum price, your Spot Instances will be interrupted more frequently than if you do not specify this parameter.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](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/burstable-performance-instances-unlimited-mode-concepts.html#unlimited-mode-surplus-credits) in the Amazon EC2 User Guide.
- `min_target_capacity`**Type**: `INT32`**Provider name**: `MinTargetCapacity`**Description**: The minimum target capacity for Spot 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`
- `single_availability_zone`**Type**: `BOOLEAN`**Provider name**: `SingleAvailabilityZone`**Description**: Indicates that the fleet launches all Spot Instances into a single Availability Zone. Supported only for fleets of type `instant`.
- `single_instance_type`**Type**: `BOOLEAN`**Provider name**: `SingleInstanceType`**Description**: Indicates that the fleet uses a single instance type to launch all Spot Instances in the fleet. Supported only for fleets of type `instant`.

## `tags`{% #tags %}

**Type**: `UNORDERED_LIST_STRING`

## `target_capacity_specification`{% #target_capacity_specification %}

**Type**: `STRUCT`**Provider name**: `TargetCapacitySpecification`**Description**: The number of 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.

- `default_target_capacity_type`**Type**: `STRING`**Provider name**: `DefaultTargetCapacityType`**Description**: The default target capacity type.
- `on_demand_target_capacity`**Type**: `INT32`**Provider name**: `OnDemandTargetCapacity`**Description**: The number of On-Demand units to request. If you specify a target capacity for Spot units, you cannot specify a target capacity for On-Demand units.
- `spot_target_capacity`**Type**: `INT32`**Provider name**: `SpotTargetCapacity`**Description**: The maximum number of Spot units to launch. If you specify a target capacity for On-Demand units, you cannot specify a target capacity for Spot units.
- `target_capacity_unit_type`**Type**: `STRING`**Provider name**: `TargetCapacityUnitType`**Description**: The unit for the target capacity.
- `total_target_capacity`**Type**: `INT32`**Provider name**: `TotalTargetCapacity`**Description**: The number of units to request, filled the default target capacity type.

## `terminate_instances_with_expiration`{% #terminate_instances_with_expiration %}

**Type**: `BOOLEAN`**Provider name**: `TerminateInstancesWithExpiration`**Description**: Indicates whether running instances should be terminated when the EC2 Fleet expires.

## `type`{% #type %}

**Type**: `STRING`**Provider name**: `Type`**Description**: The type of request. Indicates whether the EC2 Fleet only `requests` the target capacity, or also attempts to `maintain` it. If you request a certain target capacity, EC2 Fleet only places the required requests; it does not attempt to replenish instances if capacity is diminished, and it does not submit requests in alternative capacity pools if capacity is unavailable. To maintain a certain target capacity, EC2 Fleet places the required requests to meet this target capacity. It also automatically replenishes any interrupted Spot Instances. Default: `maintain`.

## `valid_from`{% #valid_from %}

**Type**: `TIMESTAMP`**Provider name**: `ValidFrom`**Description**: The start date and time of the request, in UTC format (for example, YYYY-MM-DDTHH:MM:SSZ). The default is to start fulfilling the request immediately.

## `valid_until`{% #valid_until %}

**Type**: `TIMESTAMP`**Provider name**: `ValidUntil`**Description**: The end date and time of the request, in UTC format (for example, YYYY-MM-DDTHH:MM:SSZ). At this point, no new instance requests are placed or able to fulfill the request. The default end date is 7 days from the current date.
