[ aws . ec2 ]

describe-fleets

Description

Describes the specified EC2 Fleets or all of your EC2 Fleets.

For more information, see Monitor your EC2 Fleet in the Amazon EC2 User Guide .

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

describe-fleets is a paginated operation. Multiple API calls may be issued in order to retrieve the entire data set of results. You can disable pagination by providing the --no-paginate argument. When using --output text and the --query argument on a paginated response, the --query argument must extract data from the results of the following query expressions: Fleets

Synopsis

  describe-fleets
[--dry-run | --no-dry-run]
[--fleet-ids <value>]
[--filters <value>]
[--cli-input-json | --cli-input-yaml]
[--starting-token <value>]
[--page-size <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]

Options

--dry-run | --no-dry-run (boolean)

Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is DryRunOperation . Otherwise, it is UnauthorizedOperation .

--fleet-ids (list)

The IDs of the EC2 Fleets.

Note

If a fleet is of type instant , you must specify the fleet ID, otherwise it does not appear in the response.

(string)

Syntax:

"string" "string" ...

--filters (list)

The filters.

  • activity-status - The progress of the EC2 Fleet ( error | pending-fulfillment | pending-termination | fulfilled ).

  • excess-capacity-termination-policy - Indicates whether to terminate running instances if the target capacity is decreased below the current EC2 Fleet size (true | false ).

  • fleet-state - The state of the EC2 Fleet (submitted | active | deleted | failed | deleted-running | deleted-terminating | modifying ).

  • replace-unhealthy-instances - Indicates whether EC2 Fleet should replace unhealthy instances (true | false ).

  • type - The type of request (instant | request | maintain ).

(structure)

A filter name and value pair that is used to return a more specific list of results from a describe operation. Filters can be used to match a set of resources by specific criteria, such as tags, attributes, or IDs.

If you specify multiple filters, the filters are joined with an AND , and the request returns only results that match all of the specified filters.

Name -> (string)

The name of the filter. Filter names are case-sensitive.

Values -> (list)

The filter values. Filter values are case-sensitive. If you specify multiple values for a filter, the values are joined with an OR , and the request returns all results that match any of the specified values.

(string)

Shorthand Syntax:

Name=string,Values=string,string ...

JSON Syntax:

[
  {
    "Name": "string",
    "Values": ["string", ...]
  }
  ...
]

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--starting-token (string)

A token to specify where to start paginating. This is the NextToken from a previously truncated response.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--page-size (integer)

The size of each page to get in the AWS service call. This does not affect the number of items returned in the command’s output. Setting a smaller page size results in more calls to the AWS service, retrieving fewer items in each call. This can help prevent the AWS service calls from timing out.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--max-items (integer)

The total number of items to return in the command’s output. If the total number of items available is more than the value specified, a NextToken is provided in the command’s output. To resume pagination, provide the NextToken value in the starting-token argument of a subsequent command. Do not use the NextToken response element directly outside of the AWS CLI.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See ‘aws help’ for descriptions of global parameters.

Examples

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal’s quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

To describe an EC2 Fleet

The following describe-fleets example describes the specified EC2 Fleet.

aws ec2 describe-fleets \
    --fleet-ids fleet-12a34b55-67cd-8ef9-ba9b-9208dEXAMPLE

Output:

{
    "Fleets": [
        {
            "ActivityStatus": "pending_fulfillment",
            "CreateTime": "2020-09-01T18:26:05.000Z",
            "FleetId": "fleet-12a34b55-67cd-8ef9-ba9b-9208dEXAMPLE",
            "FleetState": "active",
            "ExcessCapacityTerminationPolicy": "termination",
            "FulfilledCapacity": 0.0,
            "FulfilledOnDemandCapacity": 0.0,
            "LaunchTemplateConfigs": [
                {
                    "LaunchTemplateSpecification": {
                        "LaunchTemplateId": "lt-0e632f2855a979cd5",
                        "Version": "1"
                    }
                }
            ],
            "TargetCapacitySpecification": {
                "TotalTargetCapacity": 2,
                "OnDemandTargetCapacity": 0,
                "SpotTargetCapacity": 2,
                "DefaultTargetCapacityType": "spot"
            },
            "TerminateInstancesWithExpiration": false,
            "Type": "maintain",
            "ReplaceUnhealthyInstances": false,
            "SpotOptions": {
                "AllocationStrategy": "lowestPrice",
                "InstanceInterruptionBehavior": "terminate",
                "InstancePoolsToUseCount": 1
            },
            "OnDemandOptions": {
                "AllocationStrategy": "lowestPrice"
            }
        }
    ]
}

For more information, see Managing an EC2 Fleet in the Amazon Elastic Compute Cloud User Guide for Linux Instances.

Output

NextToken -> (string)

The token for the next set of results.

Fleets -> (list)

Information about the EC2 Fleets.

(structure)

Describes an EC2 Fleet.

ActivityStatus -> (string)

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.

CreateTime -> (timestamp)

The creation date and time of the EC2 Fleet.

FleetId -> (string)

The ID of the EC2 Fleet.

FleetState -> (string)

The state of the EC2 Fleet.

ClientToken -> (string)

Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see Ensuring idempotency .

Constraints: Maximum 64 ASCII characters

ExcessCapacityTerminationPolicy -> (string)

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.

FulfilledCapacity -> (double)

The number of units fulfilled by this request compared to the set target capacity.

FulfilledOnDemandCapacity -> (double)

The number of units fulfilled by this request compared to the set target On-Demand capacity.

LaunchTemplateConfigs -> (list)

The launch template and overrides.

(structure)

Describes a launch template and overrides.

LaunchTemplateSpecification -> (structure)

The launch template.

LaunchTemplateId -> (string)

The ID of the launch template.

You must specify the LaunchTemplateId or the LaunchTemplateName , but not both.

LaunchTemplateName -> (string)

The name of the launch template.

You must specify the LaunchTemplateName or the LaunchTemplateId , but not both.

Version -> (string)

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 -> (list)

Any parameters that you specify override the same parameters in the launch template.

(structure)

Describes overrides for a launch template.

InstanceType -> (string)

The instance type.

Note

If you specify InstanceTypes , you can’t specify InstanceRequirements .

MaxPrice -> (string)

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.

Warning

If you specify a maximum price, your instances will be interrupted more frequently than if you do not specify this parameter.

SubnetId -> (string)

The ID of the subnet in which to launch the instances.

AvailabilityZone -> (string)

The Availability Zone in which to launch the instances.

WeightedCapacity -> (double)

The number of units provided by the specified instance type.

Priority -> (double)

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.

Placement -> (structure)

The location where the instance launched, if applicable.

GroupName -> (string)

The name of the placement group that the instance is in.

InstanceRequirements -> (structure)

The attributes for the instance types. When you specify instance attributes, Amazon EC2 will identify instance types with those attributes.

Note

If you specify InstanceRequirements , you can’t specify InstanceTypes .

VCpuCount -> (structure)

The minimum and maximum number of vCPUs.

Min -> (integer)

The minimum number of vCPUs. If the value is 0 , there is no minimum limit.

Max -> (integer)

The maximum number of vCPUs. If this parameter is not specified, there is no maximum limit.

MemoryMiB -> (structure)

The minimum and maximum amount of memory, in MiB.

Min -> (integer)

The minimum amount of memory, in MiB. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum amount of memory, in MiB. If this parameter is not specified, there is no maximum limit.

CpuManufacturers -> (list)

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 .

Note

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

(string)

MemoryGiBPerVCpu -> (structure)

The minimum and maximum amount of memory per vCPU, in GiB.

Default: No minimum or maximum limits

Min -> (double)

The minimum amount of memory per vCPU, in GiB. If this parameter is not specified, there is no minimum limit.

Max -> (double)

The maximum amount of memory per vCPU, in GiB. If this parameter is not specified, there is no maximum limit.

ExcludedInstanceTypes -> (list)

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.

Default: No excluded instance types

(string)

InstanceGenerations -> (list)

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 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

(string)

SpotMaxPricePercentageOverLowestPrice -> (integer)

The price protection threshold for Spot Instances. This is the maximum you’ll pay for a Spot Instance, expressed as a percentage above the least expensive current generation M, C, or R instance type with your specified attributes. When Amazon EC2 selects instance types with your attributes, it excludes instance types priced above your 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 and GetInstanceTypesFromInstanceRequirements .

Note

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: 100

OnDemandMaxPricePercentageOverLowestPrice -> (integer)

The price protection threshold for On-Demand Instances. This is the maximum you’ll pay for an On-Demand Instance, expressed as a percentage above the least expensive current generation M, C, or R instance type with your specified attributes. When Amazon EC2 selects instance types with your attributes, it excludes instance types priced above your 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 and GetInstanceTypesFromInstanceRequirements .

Note

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

BareMetal -> (string)

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

BurstablePerformance -> (string)

Indicates whether burstable performance T instance types are included, excluded, or required. For more information, see Burstable performance instances .

  • 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

RequireHibernateSupport -> (boolean)

Indicates whether instance types must support hibernation for On-Demand Instances.

This parameter is not supported for GetSpotPlacementScores .

Default: false

NetworkInterfaceCount -> (structure)

The minimum and maximum number of network interfaces.

Default: No minimum or maximum limits

Min -> (integer)

The minimum number of network interfaces. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum number of network interfaces. If this parameter is not specified, there is no maximum limit.

LocalStorage -> (string)

Indicates whether instance types with instance store volumes are included, excluded, or required. For more information, Amazon EC2 instance store 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

LocalStorageTypes -> (list)

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

(string)

TotalLocalStorageGB -> (structure)

The minimum and maximum amount of total local storage, in GB.

Default: No minimum or maximum limits

Min -> (double)

The minimum amount of total local storage, in GB. If this parameter is not specified, there is no minimum limit.

Max -> (double)

The maximum amount of total local storage, in GB. If this parameter is not specified, there is no maximum limit.

BaselineEbsBandwidthMbps -> (structure)

The minimum and maximum baseline bandwidth to Amazon EBS, in Mbps. For more information, see Amazon EBS–optimized instances in the Amazon EC2 User Guide .

Default: No minimum or maximum limits

Min -> (integer)

The minimum baseline bandwidth, in Mbps. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum baseline bandwidth, in Mbps. If this parameter is not specified, there is no maximum limit.

AcceleratorTypes -> (list)

The accelerator types that must be on the instance type.

  • For instance types with GPU accelerators, specify gpu .

  • For instance types with FPGA accelerators, specify fpga .

  • For instance types with inference accelerators, specify inference .

Default: Any accelerator type

(string)

AcceleratorCount -> (structure)

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

Min -> (integer)

The minimum number of accelerators. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum number of accelerators. If this parameter is not specified, there is no maximum limit.

AcceleratorManufacturers -> (list)

Indicates whether instance types must have accelerators by specific manufacturers.

  • For instance types with NVIDIA devices, specify nvidia .

  • For instance types with AMD devices, specify amd .

  • For instance types with Amazon Web Services devices, specify amazon-web-services .

  • For instance types with Xilinx devices, specify xilinx .

Default: Any manufacturer

(string)

AcceleratorNames -> (list)

The accelerators that must be on the instance type.

  • For instance types with NVIDIA A100 GPUs, specify a100 .

  • For instance types with NVIDIA V100 GPUs, specify v100 .

  • For instance types with NVIDIA K80 GPUs, specify k80 .

  • For instance types with NVIDIA T4 GPUs, specify t4 .

  • 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 Xilinx VU9P FPGAs, specify vu9p .

Default: Any accelerator

(string)

AcceleratorTotalMemoryMiB -> (structure)

The minimum and maximum amount of total accelerator memory, in MiB.

Default: No minimum or maximum limits

Min -> (integer)

The minimum amount of accelerator memory, in MiB. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum amount of accelerator memory, in MiB. If this parameter is not specified, there is no maximum limit.

TargetCapacitySpecification -> (structure)

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.

TotalTargetCapacity -> (integer)

The number of units to request, filled using DefaultTargetCapacityType .

OnDemandTargetCapacity -> (integer)

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.

SpotTargetCapacity -> (integer)

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.

DefaultTargetCapacityType -> (string)

The default TotalTargetCapacity , which is either Spot or On-Demand .

TargetCapacityUnitType -> (string)

The unit for the target capacity.

Default: units (translates to number of instances)

TerminateInstancesWithExpiration -> (boolean)

Indicates whether running instances should be terminated when the EC2 Fleet expires.

Type -> (string)

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 .

ValidFrom -> (timestamp)

The start date and time of the request, in UTC format (for example, YYYY -MM -DD T*HH* :MM :SS Z). The default is to start fulfilling the request immediately.

ValidUntil -> (timestamp)

The end date and time of the request, in UTC format (for example, YYYY -MM -DD T*HH* :MM :SS Z). 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.

ReplaceUnhealthyInstances -> (boolean)

Indicates whether EC2 Fleet should replace unhealthy Spot Instances. Supported only for fleets of type maintain . For more information, see EC2 Fleet health checks in the Amazon EC2 User Guide .

SpotOptions -> (structure)

The configuration of Spot Instances in an EC2 Fleet.

AllocationStrategy -> (string)

The strategy that determines how to allocate the target Spot Instance capacity across the Spot Instance pools specified by the EC2 Fleet.

lowest-price - EC2 Fleet launches instances from the Spot Instance pools with the lowest price.

diversified - EC2 Fleet launches instances from all of the Spot Instance pools that you specify.

capacity-optimized (recommended) - EC2 Fleet launches instances from Spot Instance pools with optimal capacity for the number of instances that are launching. 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 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.

Default: lowest-price

MaintenanceStrategies -> (structure)

The strategies for managing your workloads on your Spot Instances that will be interrupted. Currently only the capacity rebalance strategy is available.

CapacityRebalance -> (structure)

The strategy to use when Amazon EC2 emits a signal that your Spot Instance is at an elevated risk of being interrupted.

ReplacementStrategy -> (string)

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.

TerminationDelay -> (integer)

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.

InstanceInterruptionBehavior -> (string)

The behavior when a Spot Instance is interrupted.

Default: terminate

InstancePoolsToUseCount -> (integer)

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.

SingleInstanceType -> (boolean)

Indicates that the fleet uses a single instance type to launch all Spot Instances in the fleet.

Supported only for fleets of type instant .

SingleAvailabilityZone -> (boolean)

Indicates that the fleet launches all Spot Instances into a single Availability Zone.

Supported only for fleets of type instant .

MinTargetCapacity -> (integer)

The minimum target capacity for Spot Instances in the fleet. If the minimum target capacity is not reached, the fleet launches no instances.

Supported only for fleets of type instant .

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

MaxTotalPrice -> (string)

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.

Warning

If you specify a maximum price, your Spot Instances will be interrupted more frequently than if you do not specify this parameter.

OnDemandOptions -> (structure)

The allocation strategy of On-Demand Instances in an EC2 Fleet.

AllocationStrategy -> (string)

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

CapacityReservationOptions -> (structure)

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

Supported only for fleets of type instant .

UsageStrategy -> (string)

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.

SingleInstanceType -> (boolean)

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 .

SingleAvailabilityZone -> (boolean)

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

Supported only for fleets of type instant .

MinTargetCapacity -> (integer)

The minimum target capacity for On-Demand Instances in the fleet. If the minimum target capacity is not reached, the fleet launches no instances.

Supported only for fleets of type instant .

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

MaxTotalPrice -> (string)

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

Tags -> (list)

The tags for an EC2 Fleet resource.

(structure)

Describes a tag.

Key -> (string)

The key of the tag.

Constraints: Tag keys are case-sensitive and accept a maximum of 127 Unicode characters. May not begin with aws: .

Value -> (string)

The value of the tag.

Constraints: Tag values are case-sensitive and accept a maximum of 256 Unicode characters.

Errors -> (list)

Information about the instances that could not be launched by the fleet. Valid only when Type is set to instant .

(structure)

Describes the instances that could not be launched by the fleet.

LaunchTemplateAndOverrides -> (structure)

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.

LaunchTemplateSpecification -> (structure)

The launch template.

LaunchTemplateId -> (string)

The ID of the launch template.

You must specify the LaunchTemplateId or the LaunchTemplateName , but not both.

LaunchTemplateName -> (string)

The name of the launch template.

You must specify the LaunchTemplateName or the LaunchTemplateId , but not both.

Version -> (string)

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 -> (structure)

Any parameters that you specify override the same parameters in the launch template.

InstanceType -> (string)

The instance type.

Note

If you specify InstanceTypes , you can’t specify InstanceRequirements .

MaxPrice -> (string)

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.

Warning

If you specify a maximum price, your instances will be interrupted more frequently than if you do not specify this parameter.

SubnetId -> (string)

The ID of the subnet in which to launch the instances.

AvailabilityZone -> (string)

The Availability Zone in which to launch the instances.

WeightedCapacity -> (double)

The number of units provided by the specified instance type.

Priority -> (double)

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.

Placement -> (structure)

The location where the instance launched, if applicable.

GroupName -> (string)

The name of the placement group that the instance is in.

InstanceRequirements -> (structure)

The attributes for the instance types. When you specify instance attributes, Amazon EC2 will identify instance types with those attributes.

Note

If you specify InstanceRequirements , you can’t specify InstanceTypes .

VCpuCount -> (structure)

The minimum and maximum number of vCPUs.

Min -> (integer)

The minimum number of vCPUs. If the value is 0 , there is no minimum limit.

Max -> (integer)

The maximum number of vCPUs. If this parameter is not specified, there is no maximum limit.

MemoryMiB -> (structure)

The minimum and maximum amount of memory, in MiB.

Min -> (integer)

The minimum amount of memory, in MiB. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum amount of memory, in MiB. If this parameter is not specified, there is no maximum limit.

CpuManufacturers -> (list)

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 .

Note

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

(string)

MemoryGiBPerVCpu -> (structure)

The minimum and maximum amount of memory per vCPU, in GiB.

Default: No minimum or maximum limits

Min -> (double)

The minimum amount of memory per vCPU, in GiB. If this parameter is not specified, there is no minimum limit.

Max -> (double)

The maximum amount of memory per vCPU, in GiB. If this parameter is not specified, there is no maximum limit.

ExcludedInstanceTypes -> (list)

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.

Default: No excluded instance types

(string)

InstanceGenerations -> (list)

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 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

(string)

SpotMaxPricePercentageOverLowestPrice -> (integer)

The price protection threshold for Spot Instances. This is the maximum you’ll pay for a Spot Instance, expressed as a percentage above the least expensive current generation M, C, or R instance type with your specified attributes. When Amazon EC2 selects instance types with your attributes, it excludes instance types priced above your 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 and GetInstanceTypesFromInstanceRequirements .

Note

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: 100

OnDemandMaxPricePercentageOverLowestPrice -> (integer)

The price protection threshold for On-Demand Instances. This is the maximum you’ll pay for an On-Demand Instance, expressed as a percentage above the least expensive current generation M, C, or R instance type with your specified attributes. When Amazon EC2 selects instance types with your attributes, it excludes instance types priced above your 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 and GetInstanceTypesFromInstanceRequirements .

Note

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

BareMetal -> (string)

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

BurstablePerformance -> (string)

Indicates whether burstable performance T instance types are included, excluded, or required. For more information, see Burstable performance instances .

  • 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

RequireHibernateSupport -> (boolean)

Indicates whether instance types must support hibernation for On-Demand Instances.

This parameter is not supported for GetSpotPlacementScores .

Default: false

NetworkInterfaceCount -> (structure)

The minimum and maximum number of network interfaces.

Default: No minimum or maximum limits

Min -> (integer)

The minimum number of network interfaces. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum number of network interfaces. If this parameter is not specified, there is no maximum limit.

LocalStorage -> (string)

Indicates whether instance types with instance store volumes are included, excluded, or required. For more information, Amazon EC2 instance store 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

LocalStorageTypes -> (list)

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

(string)

TotalLocalStorageGB -> (structure)

The minimum and maximum amount of total local storage, in GB.

Default: No minimum or maximum limits

Min -> (double)

The minimum amount of total local storage, in GB. If this parameter is not specified, there is no minimum limit.

Max -> (double)

The maximum amount of total local storage, in GB. If this parameter is not specified, there is no maximum limit.

BaselineEbsBandwidthMbps -> (structure)

The minimum and maximum baseline bandwidth to Amazon EBS, in Mbps. For more information, see Amazon EBS–optimized instances in the Amazon EC2 User Guide .

Default: No minimum or maximum limits

Min -> (integer)

The minimum baseline bandwidth, in Mbps. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum baseline bandwidth, in Mbps. If this parameter is not specified, there is no maximum limit.

AcceleratorTypes -> (list)

The accelerator types that must be on the instance type.

  • For instance types with GPU accelerators, specify gpu .

  • For instance types with FPGA accelerators, specify fpga .

  • For instance types with inference accelerators, specify inference .

Default: Any accelerator type

(string)

AcceleratorCount -> (structure)

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

Min -> (integer)

The minimum number of accelerators. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum number of accelerators. If this parameter is not specified, there is no maximum limit.

AcceleratorManufacturers -> (list)

Indicates whether instance types must have accelerators by specific manufacturers.

  • For instance types with NVIDIA devices, specify nvidia .

  • For instance types with AMD devices, specify amd .

  • For instance types with Amazon Web Services devices, specify amazon-web-services .

  • For instance types with Xilinx devices, specify xilinx .

Default: Any manufacturer

(string)

AcceleratorNames -> (list)

The accelerators that must be on the instance type.

  • For instance types with NVIDIA A100 GPUs, specify a100 .

  • For instance types with NVIDIA V100 GPUs, specify v100 .

  • For instance types with NVIDIA K80 GPUs, specify k80 .

  • For instance types with NVIDIA T4 GPUs, specify t4 .

  • 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 Xilinx VU9P FPGAs, specify vu9p .

Default: Any accelerator

(string)

AcceleratorTotalMemoryMiB -> (structure)

The minimum and maximum amount of total accelerator memory, in MiB.

Default: No minimum or maximum limits

Min -> (integer)

The minimum amount of accelerator memory, in MiB. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum amount of accelerator memory, in MiB. If this parameter is not specified, there is no maximum limit.

Lifecycle -> (string)

Indicates if the instance that could not be launched was a Spot Instance or On-Demand Instance.

ErrorCode -> (string)

The error code that indicates why the instance could not be launched. For more information about error codes, see Error codes .

ErrorMessage -> (string)

The error message that describes why the instance could not be launched. For more information about error messages, see Error codes .

Instances -> (list)

Information about the instances that were launched by the fleet. Valid only when Type is set to instant .

(structure)

Describes the instances that were launched by the fleet.

LaunchTemplateAndOverrides -> (structure)

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.

LaunchTemplateSpecification -> (structure)

The launch template.

LaunchTemplateId -> (string)

The ID of the launch template.

You must specify the LaunchTemplateId or the LaunchTemplateName , but not both.

LaunchTemplateName -> (string)

The name of the launch template.

You must specify the LaunchTemplateName or the LaunchTemplateId , but not both.

Version -> (string)

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 -> (structure)

Any parameters that you specify override the same parameters in the launch template.

InstanceType -> (string)

The instance type.

Note

If you specify InstanceTypes , you can’t specify InstanceRequirements .

MaxPrice -> (string)

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.

Warning

If you specify a maximum price, your instances will be interrupted more frequently than if you do not specify this parameter.

SubnetId -> (string)

The ID of the subnet in which to launch the instances.

AvailabilityZone -> (string)

The Availability Zone in which to launch the instances.

WeightedCapacity -> (double)

The number of units provided by the specified instance type.

Priority -> (double)

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.

Placement -> (structure)

The location where the instance launched, if applicable.

GroupName -> (string)

The name of the placement group that the instance is in.

InstanceRequirements -> (structure)

The attributes for the instance types. When you specify instance attributes, Amazon EC2 will identify instance types with those attributes.

Note

If you specify InstanceRequirements , you can’t specify InstanceTypes .

VCpuCount -> (structure)

The minimum and maximum number of vCPUs.

Min -> (integer)

The minimum number of vCPUs. If the value is 0 , there is no minimum limit.

Max -> (integer)

The maximum number of vCPUs. If this parameter is not specified, there is no maximum limit.

MemoryMiB -> (structure)

The minimum and maximum amount of memory, in MiB.

Min -> (integer)

The minimum amount of memory, in MiB. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum amount of memory, in MiB. If this parameter is not specified, there is no maximum limit.

CpuManufacturers -> (list)

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 .

Note

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

(string)

MemoryGiBPerVCpu -> (structure)

The minimum and maximum amount of memory per vCPU, in GiB.

Default: No minimum or maximum limits

Min -> (double)

The minimum amount of memory per vCPU, in GiB. If this parameter is not specified, there is no minimum limit.

Max -> (double)

The maximum amount of memory per vCPU, in GiB. If this parameter is not specified, there is no maximum limit.

ExcludedInstanceTypes -> (list)

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.

Default: No excluded instance types

(string)

InstanceGenerations -> (list)

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 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

(string)

SpotMaxPricePercentageOverLowestPrice -> (integer)

The price protection threshold for Spot Instances. This is the maximum you’ll pay for a Spot Instance, expressed as a percentage above the least expensive current generation M, C, or R instance type with your specified attributes. When Amazon EC2 selects instance types with your attributes, it excludes instance types priced above your 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 and GetInstanceTypesFromInstanceRequirements .

Note

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: 100

OnDemandMaxPricePercentageOverLowestPrice -> (integer)

The price protection threshold for On-Demand Instances. This is the maximum you’ll pay for an On-Demand Instance, expressed as a percentage above the least expensive current generation M, C, or R instance type with your specified attributes. When Amazon EC2 selects instance types with your attributes, it excludes instance types priced above your 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 and GetInstanceTypesFromInstanceRequirements .

Note

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

BareMetal -> (string)

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

BurstablePerformance -> (string)

Indicates whether burstable performance T instance types are included, excluded, or required. For more information, see Burstable performance instances .

  • 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

RequireHibernateSupport -> (boolean)

Indicates whether instance types must support hibernation for On-Demand Instances.

This parameter is not supported for GetSpotPlacementScores .

Default: false

NetworkInterfaceCount -> (structure)

The minimum and maximum number of network interfaces.

Default: No minimum or maximum limits

Min -> (integer)

The minimum number of network interfaces. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum number of network interfaces. If this parameter is not specified, there is no maximum limit.

LocalStorage -> (string)

Indicates whether instance types with instance store volumes are included, excluded, or required. For more information, Amazon EC2 instance store 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

LocalStorageTypes -> (list)

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

(string)

TotalLocalStorageGB -> (structure)

The minimum and maximum amount of total local storage, in GB.

Default: No minimum or maximum limits

Min -> (double)

The minimum amount of total local storage, in GB. If this parameter is not specified, there is no minimum limit.

Max -> (double)

The maximum amount of total local storage, in GB. If this parameter is not specified, there is no maximum limit.

BaselineEbsBandwidthMbps -> (structure)

The minimum and maximum baseline bandwidth to Amazon EBS, in Mbps. For more information, see Amazon EBS–optimized instances in the Amazon EC2 User Guide .

Default: No minimum or maximum limits

Min -> (integer)

The minimum baseline bandwidth, in Mbps. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum baseline bandwidth, in Mbps. If this parameter is not specified, there is no maximum limit.

AcceleratorTypes -> (list)

The accelerator types that must be on the instance type.

  • For instance types with GPU accelerators, specify gpu .

  • For instance types with FPGA accelerators, specify fpga .

  • For instance types with inference accelerators, specify inference .

Default: Any accelerator type

(string)

AcceleratorCount -> (structure)

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

Min -> (integer)

The minimum number of accelerators. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum number of accelerators. If this parameter is not specified, there is no maximum limit.

AcceleratorManufacturers -> (list)

Indicates whether instance types must have accelerators by specific manufacturers.

  • For instance types with NVIDIA devices, specify nvidia .

  • For instance types with AMD devices, specify amd .

  • For instance types with Amazon Web Services devices, specify amazon-web-services .

  • For instance types with Xilinx devices, specify xilinx .

Default: Any manufacturer

(string)

AcceleratorNames -> (list)

The accelerators that must be on the instance type.

  • For instance types with NVIDIA A100 GPUs, specify a100 .

  • For instance types with NVIDIA V100 GPUs, specify v100 .

  • For instance types with NVIDIA K80 GPUs, specify k80 .

  • For instance types with NVIDIA T4 GPUs, specify t4 .

  • 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 Xilinx VU9P FPGAs, specify vu9p .

Default: Any accelerator

(string)

AcceleratorTotalMemoryMiB -> (structure)

The minimum and maximum amount of total accelerator memory, in MiB.

Default: No minimum or maximum limits

Min -> (integer)

The minimum amount of accelerator memory, in MiB. If this parameter is not specified, there is no minimum limit.

Max -> (integer)

The maximum amount of accelerator memory, in MiB. If this parameter is not specified, there is no maximum limit.

Lifecycle -> (string)

Indicates if the instance that was launched is a Spot Instance or On-Demand Instance.

InstanceIds -> (list)

The IDs of the instances.

(string)

InstanceType -> (string)

The instance type.

Platform -> (string)

The value is Windows for Windows instances. Otherwise, the value is blank.

Context -> (string)

Reserved.