modify-fleet¶

Description¶

Modifies the specified EC2 Fleet.

You can only modify an EC2 Fleet request of type maintain .

While the EC2 Fleet is being modified, it is in the modifying state.

To scale up your EC2 Fleet, increase its target capacity. The EC2 Fleet launches the additional Spot Instances according to the allocation strategy for the EC2 Fleet request. If the allocation strategy is lowest-price , the EC2 Fleet launches instances using the Spot Instance pool with the lowest price. If the allocation strategy is diversified , the EC2 Fleet distributes the instances across the Spot Instance pools. If the allocation strategy is capacity-optimized , EC2 Fleet launches instances from Spot Instance pools with optimal capacity for the number of instances that are launching.

To scale down your EC2 Fleet, decrease its target capacity. First, the EC2 Fleet cancels any open requests that exceed the new target capacity. You can request that the EC2 Fleet terminate Spot Instances until the size of the fleet no longer exceeds the new target capacity. If the allocation strategy is lowest-price , the EC2 Fleet terminates the instances with the highest price per unit. If the allocation strategy is capacity-optimized , the EC2 Fleet terminates the instances in the Spot Instance pools that have the least available Spot Instance capacity. If the allocation strategy is diversified , the EC2 Fleet terminates instances across the Spot Instance pools. Alternatively, you can request that the EC2 Fleet keep the fleet at its current size, but not replace any Spot Instances that are interrupted or that you terminate manually.

If you are finished with your EC2 Fleet for now, but will use it again later, you can set the target capacity to 0.

Synopsis¶

  modify-fleet
[--dry-run | --no-dry-run]
[--excess-capacity-termination-policy <value>]
[--launch-template-configs <value>]
--fleet-id <value>
[--target-capacity-specification <value>]
[--cli-input-json | --cli-input-yaml]
[--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 .

--excess-capacity-termination-policy (string)

Indicates whether running instances should be terminated if the total target capacity of the EC2 Fleet is decreased below the current size of the EC2 Fleet.

Possible values:

no-termination

termination

--launch-template-configs (list)

The launch template and overrides.

(structure)

Describes a launch template and overrides.

LaunchTemplateSpecification -> (structure)

The launch template to use. You must specify either the launch template ID or launch template name in the request.

LaunchTemplateId -> (string)

The ID of the launch template. If you specify the template ID, you can’t specify the template name.

LaunchTemplateName -> (string)

The name of the launch template. If you specify the template name, you can’t specify the template ID.

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.

MaxPrice -> (string)

The maximum price per unit hour that you are willing to pay for a Spot Instance.

SubnetId -> (string)

The IDs of the subnets in which to launch the instances. Separate multiple subnet IDs using commas (for example, subnet-1234abcdeexample1, subnet-0987cdef6example2 ). A request of type instant can have only one subnet ID.

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 first 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 launch template 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.

AvailabilityZone -> (string)

The Availability Zone of the instance.

If not specified, an Availability Zone will be automatically chosen for you based on the load balancing criteria for the Region.

This parameter is not supported by CreateFleet .

Affinity -> (string)

The affinity setting for the instance on the Dedicated Host. This parameter is not supported for the ImportInstance command.

This parameter is not supported by CreateFleet .

GroupName -> (string)

The name of the placement group the instance is in.

PartitionNumber -> (integer)

The number of the partition the instance is in. Valid only if the placement group strategy is set to partition .

This parameter is not supported by CreateFleet .

HostId -> (string)

The ID of the Dedicated Host on which the instance resides. This parameter is not supported for the ImportInstance command.

This parameter is not supported by CreateFleet .

Tenancy -> (string)

The tenancy of the instance (if the instance is running in a VPC). An instance with a tenancy of dedicated runs on single-tenant hardware. The host tenancy is not supported for the ImportInstance command.

This parameter is not supported by CreateFleet .

SpreadDomain -> (string)

Reserved for future use.

This parameter is not supported by CreateFleet .

HostResourceGroupArn -> (string)

The ARN of the host resource group in which to launch the instances. If you specify a host resource group ARN, omit the Tenancy parameter or set it to host .

This parameter is not supported by CreateFleet .

JSON Syntax:

[
  {
    "LaunchTemplateSpecification": {
      "LaunchTemplateId": "string",
      "LaunchTemplateName": "string",
      "Version": "string"
    },
    "Overrides": [
      {
        "InstanceType": "t1.micro"|"t2.nano"|"t2.micro"|"t2.small"|"t2.medium"|"t2.large"|"t2.xlarge"|"t2.2xlarge"|"t3.nano"|"t3.micro"|"t3.small"|"t3.medium"|"t3.large"|"t3.xlarge"|"t3.2xlarge"|"t3a.nano"|"t3a.micro"|"t3a.small"|"t3a.medium"|"t3a.large"|"t3a.xlarge"|"t3a.2xlarge"|"t4g.nano"|"t4g.micro"|"t4g.small"|"t4g.medium"|"t4g.large"|"t4g.xlarge"|"t4g.2xlarge"|"m1.small"|"m1.medium"|"m1.large"|"m1.xlarge"|"m3.medium"|"m3.large"|"m3.xlarge"|"m3.2xlarge"|"m4.large"|"m4.xlarge"|"m4.2xlarge"|"m4.4xlarge"|"m4.10xlarge"|"m4.16xlarge"|"m2.xlarge"|"m2.2xlarge"|"m2.4xlarge"|"cr1.8xlarge"|"r3.large"|"r3.xlarge"|"r3.2xlarge"|"r3.4xlarge"|"r3.8xlarge"|"r4.large"|"r4.xlarge"|"r4.2xlarge"|"r4.4xlarge"|"r4.8xlarge"|"r4.16xlarge"|"r5.large"|"r5.xlarge"|"r5.2xlarge"|"r5.4xlarge"|"r5.8xlarge"|"r5.12xlarge"|"r5.16xlarge"|"r5.24xlarge"|"r5.metal"|"r5a.large"|"r5a.xlarge"|"r5a.2xlarge"|"r5a.4xlarge"|"r5a.8xlarge"|"r5a.12xlarge"|"r5a.16xlarge"|"r5a.24xlarge"|"r5b.large"|"r5b.xlarge"|"r5b.2xlarge"|"r5b.4xlarge"|"r5b.8xlarge"|"r5b.12xlarge"|"r5b.16xlarge"|"r5b.24xlarge"|"r5b.metal"|"r5d.large"|"r5d.xlarge"|"r5d.2xlarge"|"r5d.4xlarge"|"r5d.8xlarge"|"r5d.12xlarge"|"r5d.16xlarge"|"r5d.24xlarge"|"r5d.metal"|"r5ad.large"|"r5ad.xlarge"|"r5ad.2xlarge"|"r5ad.4xlarge"|"r5ad.8xlarge"|"r5ad.12xlarge"|"r5ad.16xlarge"|"r5ad.24xlarge"|"r6g.metal"|"r6g.medium"|"r6g.large"|"r6g.xlarge"|"r6g.2xlarge"|"r6g.4xlarge"|"r6g.8xlarge"|"r6g.12xlarge"|"r6g.16xlarge"|"r6gd.metal"|"r6gd.medium"|"r6gd.large"|"r6gd.xlarge"|"r6gd.2xlarge"|"r6gd.4xlarge"|"r6gd.8xlarge"|"r6gd.12xlarge"|"r6gd.16xlarge"|"x1.16xlarge"|"x1.32xlarge"|"x1e.xlarge"|"x1e.2xlarge"|"x1e.4xlarge"|"x1e.8xlarge"|"x1e.16xlarge"|"x1e.32xlarge"|"i2.xlarge"|"i2.2xlarge"|"i2.4xlarge"|"i2.8xlarge"|"i3.large"|"i3.xlarge"|"i3.2xlarge"|"i3.4xlarge"|"i3.8xlarge"|"i3.16xlarge"|"i3.metal"|"i3en.large"|"i3en.xlarge"|"i3en.2xlarge"|"i3en.3xlarge"|"i3en.6xlarge"|"i3en.12xlarge"|"i3en.24xlarge"|"i3en.metal"|"hi1.4xlarge"|"hs1.8xlarge"|"c1.medium"|"c1.xlarge"|"c3.large"|"c3.xlarge"|"c3.2xlarge"|"c3.4xlarge"|"c3.8xlarge"|"c4.large"|"c4.xlarge"|"c4.2xlarge"|"c4.4xlarge"|"c4.8xlarge"|"c5.large"|"c5.xlarge"|"c5.2xlarge"|"c5.4xlarge"|"c5.9xlarge"|"c5.12xlarge"|"c5.18xlarge"|"c5.24xlarge"|"c5.metal"|"c5a.large"|"c5a.xlarge"|"c5a.2xlarge"|"c5a.4xlarge"|"c5a.8xlarge"|"c5a.12xlarge"|"c5a.16xlarge"|"c5a.24xlarge"|"c5ad.large"|"c5ad.xlarge"|"c5ad.2xlarge"|"c5ad.4xlarge"|"c5ad.8xlarge"|"c5ad.12xlarge"|"c5ad.16xlarge"|"c5ad.24xlarge"|"c5d.large"|"c5d.xlarge"|"c5d.2xlarge"|"c5d.4xlarge"|"c5d.9xlarge"|"c5d.12xlarge"|"c5d.18xlarge"|"c5d.24xlarge"|"c5d.metal"|"c5n.large"|"c5n.xlarge"|"c5n.2xlarge"|"c5n.4xlarge"|"c5n.9xlarge"|"c5n.18xlarge"|"c5n.metal"|"c6g.metal"|"c6g.medium"|"c6g.large"|"c6g.xlarge"|"c6g.2xlarge"|"c6g.4xlarge"|"c6g.8xlarge"|"c6g.12xlarge"|"c6g.16xlarge"|"c6gd.metal"|"c6gd.medium"|"c6gd.large"|"c6gd.xlarge"|"c6gd.2xlarge"|"c6gd.4xlarge"|"c6gd.8xlarge"|"c6gd.12xlarge"|"c6gd.16xlarge"|"c6gn.medium"|"c6gn.large"|"c6gn.xlarge"|"c6gn.2xlarge"|"c6gn.4xlarge"|"c6gn.8xlarge"|"c6gn.12xlarge"|"c6gn.16xlarge"|"cc1.4xlarge"|"cc2.8xlarge"|"g2.2xlarge"|"g2.8xlarge"|"g3.4xlarge"|"g3.8xlarge"|"g3.16xlarge"|"g3s.xlarge"|"g4ad.4xlarge"|"g4ad.8xlarge"|"g4ad.16xlarge"|"g4dn.xlarge"|"g4dn.2xlarge"|"g4dn.4xlarge"|"g4dn.8xlarge"|"g4dn.12xlarge"|"g4dn.16xlarge"|"g4dn.metal"|"cg1.4xlarge"|"p2.xlarge"|"p2.8xlarge"|"p2.16xlarge"|"p3.2xlarge"|"p3.8xlarge"|"p3.16xlarge"|"p3dn.24xlarge"|"p4d.24xlarge"|"d2.xlarge"|"d2.2xlarge"|"d2.4xlarge"|"d2.8xlarge"|"d3.xlarge"|"d3.2xlarge"|"d3.4xlarge"|"d3.8xlarge"|"d3en.xlarge"|"d3en.2xlarge"|"d3en.4xlarge"|"d3en.6xlarge"|"d3en.8xlarge"|"d3en.12xlarge"|"f1.2xlarge"|"f1.4xlarge"|"f1.16xlarge"|"m5.large"|"m5.xlarge"|"m5.2xlarge"|"m5.4xlarge"|"m5.8xlarge"|"m5.12xlarge"|"m5.16xlarge"|"m5.24xlarge"|"m5.metal"|"m5a.large"|"m5a.xlarge"|"m5a.2xlarge"|"m5a.4xlarge"|"m5a.8xlarge"|"m5a.12xlarge"|"m5a.16xlarge"|"m5a.24xlarge"|"m5d.large"|"m5d.xlarge"|"m5d.2xlarge"|"m5d.4xlarge"|"m5d.8xlarge"|"m5d.12xlarge"|"m5d.16xlarge"|"m5d.24xlarge"|"m5d.metal"|"m5ad.large"|"m5ad.xlarge"|"m5ad.2xlarge"|"m5ad.4xlarge"|"m5ad.8xlarge"|"m5ad.12xlarge"|"m5ad.16xlarge"|"m5ad.24xlarge"|"m5zn.large"|"m5zn.xlarge"|"m5zn.2xlarge"|"m5zn.3xlarge"|"m5zn.6xlarge"|"m5zn.12xlarge"|"m5zn.metal"|"h1.2xlarge"|"h1.4xlarge"|"h1.8xlarge"|"h1.16xlarge"|"z1d.large"|"z1d.xlarge"|"z1d.2xlarge"|"z1d.3xlarge"|"z1d.6xlarge"|"z1d.12xlarge"|"z1d.metal"|"u-6tb1.metal"|"u-9tb1.metal"|"u-12tb1.metal"|"u-18tb1.metal"|"u-24tb1.metal"|"a1.medium"|"a1.large"|"a1.xlarge"|"a1.2xlarge"|"a1.4xlarge"|"a1.metal"|"m5dn.large"|"m5dn.xlarge"|"m5dn.2xlarge"|"m5dn.4xlarge"|"m5dn.8xlarge"|"m5dn.12xlarge"|"m5dn.16xlarge"|"m5dn.24xlarge"|"m5n.large"|"m5n.xlarge"|"m5n.2xlarge"|"m5n.4xlarge"|"m5n.8xlarge"|"m5n.12xlarge"|"m5n.16xlarge"|"m5n.24xlarge"|"r5dn.large"|"r5dn.xlarge"|"r5dn.2xlarge"|"r5dn.4xlarge"|"r5dn.8xlarge"|"r5dn.12xlarge"|"r5dn.16xlarge"|"r5dn.24xlarge"|"r5n.large"|"r5n.xlarge"|"r5n.2xlarge"|"r5n.4xlarge"|"r5n.8xlarge"|"r5n.12xlarge"|"r5n.16xlarge"|"r5n.24xlarge"|"inf1.xlarge"|"inf1.2xlarge"|"inf1.6xlarge"|"inf1.24xlarge"|"m6g.metal"|"m6g.medium"|"m6g.large"|"m6g.xlarge"|"m6g.2xlarge"|"m6g.4xlarge"|"m6g.8xlarge"|"m6g.12xlarge"|"m6g.16xlarge"|"m6gd.metal"|"m6gd.medium"|"m6gd.large"|"m6gd.xlarge"|"m6gd.2xlarge"|"m6gd.4xlarge"|"m6gd.8xlarge"|"m6gd.12xlarge"|"m6gd.16xlarge"|"mac1.metal",
        "MaxPrice": "string",
        "SubnetId": "string",
        "AvailabilityZone": "string",
        "WeightedCapacity": double,
        "Priority": double,
        "Placement": {
          "AvailabilityZone": "string",
          "Affinity": "string",
          "GroupName": "string",
          "PartitionNumber": integer,
          "HostId": "string",
          "Tenancy": "default"|"dedicated"|"host",
          "SpreadDomain": "string",
          "HostResourceGroupArn": "string"
        }
      }
      ...
    ]
  }
  ...
]

--fleet-id (string)

The ID of the EC2 Fleet.

--target-capacity-specification (structure)

The size of the EC2 Fleet.

TotalTargetCapacity -> (integer)

The number of units to request, filled using DefaultTargetCapacityType .

OnDemandTargetCapacity -> (integer)

The number of On-Demand units to request.

SpotTargetCapacity -> (integer)

The number of Spot units to request.

DefaultTargetCapacityType -> (string)

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

Shorthand Syntax:

TotalTargetCapacity=integer,OnDemandTargetCapacity=integer,SpotTargetCapacity=integer,DefaultTargetCapacityType=string

JSON Syntax:

{
  "TotalTargetCapacity": integer,
  "OnDemandTargetCapacity": integer,
  "SpotTargetCapacity": integer,
  "DefaultTargetCapacityType": "spot"|"on-demand"
}

--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.

--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¶

To scale an EC2 Fleet

The following modify-fleet example modifies the target capacity of the specified EC2 Fleet. If the specified value is greater than the current capacity, the EC2 Fleet launches additional instances. If the specified value is less than the current capacity, the EC2 Fleet cancels any open requests and if the termination policy is terminate, the EC2 fleet terminates any instances that exceed the new target capacity.

aws ec2 modify-fleet \
    --fleet-ids fleet-12a34b55-67cd-8ef9-ba9b-9208dEXAMPLE \
    --target-capacity-specification TotalTargetCapacity=5

Output:

{
    "Return": true
}

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

Output¶

Return -> (boolean)

Is true if the request succeeds, and an error otherwise.

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