:doc:`EC2 <../../ec2>` / Client / modify_fleet

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modify_fleet
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.. py:method:: EC2.Client.modify_fleet(**kwargs)

  

  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.

  

  See also: `AWS API Documentation <https://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/ModifyFleet>`_  


  **Request Syntax**
  ::

    response = client.modify_fleet(
        DryRun=True|False,
        ExcessCapacityTerminationPolicy='no-termination'|'termination',
        LaunchTemplateConfigs=[
            {
                'LaunchTemplateSpecification': {
                    'LaunchTemplateId': 'string',
                    'LaunchTemplateName': 'string',
                    'Version': 'string'
                },
                'Overrides': [
                    {
                        'InstanceType': 'a1.medium'|'a1.large'|'a1.xlarge'|'a1.2xlarge'|'a1.4xlarge'|'a1.metal'|'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.medium'|'c6g.large'|'c6g.xlarge'|'c6g.2xlarge'|'c6g.4xlarge'|'c6g.8xlarge'|'c6g.12xlarge'|'c6g.16xlarge'|'c6g.metal'|'c6gd.medium'|'c6gd.large'|'c6gd.xlarge'|'c6gd.2xlarge'|'c6gd.4xlarge'|'c6gd.8xlarge'|'c6gd.12xlarge'|'c6gd.16xlarge'|'c6gd.metal'|'c6gn.medium'|'c6gn.large'|'c6gn.xlarge'|'c6gn.2xlarge'|'c6gn.4xlarge'|'c6gn.8xlarge'|'c6gn.12xlarge'|'c6gn.16xlarge'|'c6i.large'|'c6i.xlarge'|'c6i.2xlarge'|'c6i.4xlarge'|'c6i.8xlarge'|'c6i.12xlarge'|'c6i.16xlarge'|'c6i.24xlarge'|'c6i.32xlarge'|'c6i.metal'|'cc1.4xlarge'|'cc2.8xlarge'|'cg1.4xlarge'|'cr1.8xlarge'|'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'|'dl1.24xlarge'|'f1.2xlarge'|'f1.4xlarge'|'f1.16xlarge'|'g2.2xlarge'|'g2.8xlarge'|'g3.4xlarge'|'g3.8xlarge'|'g3.16xlarge'|'g3s.xlarge'|'g4ad.xlarge'|'g4ad.2xlarge'|'g4ad.4xlarge'|'g4ad.8xlarge'|'g4ad.16xlarge'|'g4dn.xlarge'|'g4dn.2xlarge'|'g4dn.4xlarge'|'g4dn.8xlarge'|'g4dn.12xlarge'|'g4dn.16xlarge'|'g4dn.metal'|'g5.xlarge'|'g5.2xlarge'|'g5.4xlarge'|'g5.8xlarge'|'g5.12xlarge'|'g5.16xlarge'|'g5.24xlarge'|'g5.48xlarge'|'g5g.xlarge'|'g5g.2xlarge'|'g5g.4xlarge'|'g5g.8xlarge'|'g5g.16xlarge'|'g5g.metal'|'hi1.4xlarge'|'hpc6a.48xlarge'|'hs1.8xlarge'|'h1.2xlarge'|'h1.4xlarge'|'h1.8xlarge'|'h1.16xlarge'|'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'|'im4gn.large'|'im4gn.xlarge'|'im4gn.2xlarge'|'im4gn.4xlarge'|'im4gn.8xlarge'|'im4gn.16xlarge'|'inf1.xlarge'|'inf1.2xlarge'|'inf1.6xlarge'|'inf1.24xlarge'|'is4gen.medium'|'is4gen.large'|'is4gen.xlarge'|'is4gen.2xlarge'|'is4gen.4xlarge'|'is4gen.8xlarge'|'m1.small'|'m1.medium'|'m1.large'|'m1.xlarge'|'m2.xlarge'|'m2.2xlarge'|'m2.4xlarge'|'m3.medium'|'m3.large'|'m3.xlarge'|'m3.2xlarge'|'m4.large'|'m4.xlarge'|'m4.2xlarge'|'m4.4xlarge'|'m4.10xlarge'|'m4.16xlarge'|'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'|'m5ad.large'|'m5ad.xlarge'|'m5ad.2xlarge'|'m5ad.4xlarge'|'m5ad.8xlarge'|'m5ad.12xlarge'|'m5ad.16xlarge'|'m5ad.24xlarge'|'m5d.large'|'m5d.xlarge'|'m5d.2xlarge'|'m5d.4xlarge'|'m5d.8xlarge'|'m5d.12xlarge'|'m5d.16xlarge'|'m5d.24xlarge'|'m5d.metal'|'m5dn.large'|'m5dn.xlarge'|'m5dn.2xlarge'|'m5dn.4xlarge'|'m5dn.8xlarge'|'m5dn.12xlarge'|'m5dn.16xlarge'|'m5dn.24xlarge'|'m5dn.metal'|'m5n.large'|'m5n.xlarge'|'m5n.2xlarge'|'m5n.4xlarge'|'m5n.8xlarge'|'m5n.12xlarge'|'m5n.16xlarge'|'m5n.24xlarge'|'m5n.metal'|'m5zn.large'|'m5zn.xlarge'|'m5zn.2xlarge'|'m5zn.3xlarge'|'m5zn.6xlarge'|'m5zn.12xlarge'|'m5zn.metal'|'m6a.large'|'m6a.xlarge'|'m6a.2xlarge'|'m6a.4xlarge'|'m6a.8xlarge'|'m6a.12xlarge'|'m6a.16xlarge'|'m6a.24xlarge'|'m6a.32xlarge'|'m6a.48xlarge'|'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'|'m6i.large'|'m6i.xlarge'|'m6i.2xlarge'|'m6i.4xlarge'|'m6i.8xlarge'|'m6i.12xlarge'|'m6i.16xlarge'|'m6i.24xlarge'|'m6i.32xlarge'|'m6i.metal'|'mac1.metal'|'p2.xlarge'|'p2.8xlarge'|'p2.16xlarge'|'p3.2xlarge'|'p3.8xlarge'|'p3.16xlarge'|'p3dn.24xlarge'|'p4d.24xlarge'|'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'|'r5ad.large'|'r5ad.xlarge'|'r5ad.2xlarge'|'r5ad.4xlarge'|'r5ad.8xlarge'|'r5ad.12xlarge'|'r5ad.16xlarge'|'r5ad.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'|'r5dn.large'|'r5dn.xlarge'|'r5dn.2xlarge'|'r5dn.4xlarge'|'r5dn.8xlarge'|'r5dn.12xlarge'|'r5dn.16xlarge'|'r5dn.24xlarge'|'r5dn.metal'|'r5n.large'|'r5n.xlarge'|'r5n.2xlarge'|'r5n.4xlarge'|'r5n.8xlarge'|'r5n.12xlarge'|'r5n.16xlarge'|'r5n.24xlarge'|'r5n.metal'|'r6g.medium'|'r6g.large'|'r6g.xlarge'|'r6g.2xlarge'|'r6g.4xlarge'|'r6g.8xlarge'|'r6g.12xlarge'|'r6g.16xlarge'|'r6g.metal'|'r6gd.medium'|'r6gd.large'|'r6gd.xlarge'|'r6gd.2xlarge'|'r6gd.4xlarge'|'r6gd.8xlarge'|'r6gd.12xlarge'|'r6gd.16xlarge'|'r6gd.metal'|'r6i.large'|'r6i.xlarge'|'r6i.2xlarge'|'r6i.4xlarge'|'r6i.8xlarge'|'r6i.12xlarge'|'r6i.16xlarge'|'r6i.24xlarge'|'r6i.32xlarge'|'r6i.metal'|'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'|'u-6tb1.56xlarge'|'u-6tb1.112xlarge'|'u-9tb1.112xlarge'|'u-12tb1.112xlarge'|'u-6tb1.metal'|'u-9tb1.metal'|'u-12tb1.metal'|'u-18tb1.metal'|'u-24tb1.metal'|'vt1.3xlarge'|'vt1.6xlarge'|'vt1.24xlarge'|'x1.16xlarge'|'x1.32xlarge'|'x1e.xlarge'|'x1e.2xlarge'|'x1e.4xlarge'|'x1e.8xlarge'|'x1e.16xlarge'|'x1e.32xlarge'|'x2iezn.2xlarge'|'x2iezn.4xlarge'|'x2iezn.6xlarge'|'x2iezn.8xlarge'|'x2iezn.12xlarge'|'x2iezn.metal'|'x2gd.medium'|'x2gd.large'|'x2gd.xlarge'|'x2gd.2xlarge'|'x2gd.4xlarge'|'x2gd.8xlarge'|'x2gd.12xlarge'|'x2gd.16xlarge'|'x2gd.metal'|'z1d.large'|'z1d.xlarge'|'z1d.2xlarge'|'z1d.3xlarge'|'z1d.6xlarge'|'z1d.12xlarge'|'z1d.metal'|'x2idn.16xlarge'|'x2idn.24xlarge'|'x2idn.32xlarge'|'x2iedn.xlarge'|'x2iedn.2xlarge'|'x2iedn.4xlarge'|'x2iedn.8xlarge'|'x2iedn.16xlarge'|'x2iedn.24xlarge'|'x2iedn.32xlarge'|'c6a.large'|'c6a.xlarge'|'c6a.2xlarge'|'c6a.4xlarge'|'c6a.8xlarge'|'c6a.12xlarge'|'c6a.16xlarge'|'c6a.24xlarge'|'c6a.32xlarge'|'c6a.48xlarge'|'c6a.metal'|'m6a.metal'|'i4i.large'|'i4i.xlarge'|'i4i.2xlarge'|'i4i.4xlarge'|'i4i.8xlarge'|'i4i.16xlarge'|'i4i.32xlarge'|'i4i.metal'|'x2idn.metal'|'x2iedn.metal'|'c7g.medium'|'c7g.large'|'c7g.xlarge'|'c7g.2xlarge'|'c7g.4xlarge'|'c7g.8xlarge'|'c7g.12xlarge'|'c7g.16xlarge'|'mac2.metal'|'c6id.large'|'c6id.xlarge'|'c6id.2xlarge'|'c6id.4xlarge'|'c6id.8xlarge'|'c6id.12xlarge'|'c6id.16xlarge'|'c6id.24xlarge'|'c6id.32xlarge'|'c6id.metal'|'m6id.large'|'m6id.xlarge'|'m6id.2xlarge'|'m6id.4xlarge'|'m6id.8xlarge'|'m6id.12xlarge'|'m6id.16xlarge'|'m6id.24xlarge'|'m6id.32xlarge'|'m6id.metal'|'r6id.large'|'r6id.xlarge'|'r6id.2xlarge'|'r6id.4xlarge'|'r6id.8xlarge'|'r6id.12xlarge'|'r6id.16xlarge'|'r6id.24xlarge'|'r6id.32xlarge'|'r6id.metal'|'r6a.large'|'r6a.xlarge'|'r6a.2xlarge'|'r6a.4xlarge'|'r6a.8xlarge'|'r6a.12xlarge'|'r6a.16xlarge'|'r6a.24xlarge'|'r6a.32xlarge'|'r6a.48xlarge'|'r6a.metal'|'p4de.24xlarge'|'u-3tb1.56xlarge'|'u-18tb1.112xlarge'|'u-24tb1.112xlarge'|'trn1.2xlarge'|'trn1.32xlarge'|'hpc6id.32xlarge'|'c6in.large'|'c6in.xlarge'|'c6in.2xlarge'|'c6in.4xlarge'|'c6in.8xlarge'|'c6in.12xlarge'|'c6in.16xlarge'|'c6in.24xlarge'|'c6in.32xlarge'|'m6in.large'|'m6in.xlarge'|'m6in.2xlarge'|'m6in.4xlarge'|'m6in.8xlarge'|'m6in.12xlarge'|'m6in.16xlarge'|'m6in.24xlarge'|'m6in.32xlarge'|'m6idn.large'|'m6idn.xlarge'|'m6idn.2xlarge'|'m6idn.4xlarge'|'m6idn.8xlarge'|'m6idn.12xlarge'|'m6idn.16xlarge'|'m6idn.24xlarge'|'m6idn.32xlarge'|'r6in.large'|'r6in.xlarge'|'r6in.2xlarge'|'r6in.4xlarge'|'r6in.8xlarge'|'r6in.12xlarge'|'r6in.16xlarge'|'r6in.24xlarge'|'r6in.32xlarge'|'r6idn.large'|'r6idn.xlarge'|'r6idn.2xlarge'|'r6idn.4xlarge'|'r6idn.8xlarge'|'r6idn.12xlarge'|'r6idn.16xlarge'|'r6idn.24xlarge'|'r6idn.32xlarge'|'c7g.metal'|'m7g.medium'|'m7g.large'|'m7g.xlarge'|'m7g.2xlarge'|'m7g.4xlarge'|'m7g.8xlarge'|'m7g.12xlarge'|'m7g.16xlarge'|'m7g.metal'|'r7g.medium'|'r7g.large'|'r7g.xlarge'|'r7g.2xlarge'|'r7g.4xlarge'|'r7g.8xlarge'|'r7g.12xlarge'|'r7g.16xlarge'|'r7g.metal'|'c6in.metal'|'m6in.metal'|'m6idn.metal'|'r6in.metal'|'r6idn.metal'|'inf2.xlarge'|'inf2.8xlarge'|'inf2.24xlarge'|'inf2.48xlarge'|'trn1n.32xlarge'|'i4g.large'|'i4g.xlarge'|'i4g.2xlarge'|'i4g.4xlarge'|'i4g.8xlarge'|'i4g.16xlarge'|'hpc7g.4xlarge'|'hpc7g.8xlarge'|'hpc7g.16xlarge'|'c7gn.medium'|'c7gn.large'|'c7gn.xlarge'|'c7gn.2xlarge'|'c7gn.4xlarge'|'c7gn.8xlarge'|'c7gn.12xlarge'|'c7gn.16xlarge'|'p5.48xlarge'|'m7i.large'|'m7i.xlarge'|'m7i.2xlarge'|'m7i.4xlarge'|'m7i.8xlarge'|'m7i.12xlarge'|'m7i.16xlarge'|'m7i.24xlarge'|'m7i.48xlarge'|'m7i-flex.large'|'m7i-flex.xlarge'|'m7i-flex.2xlarge'|'m7i-flex.4xlarge'|'m7i-flex.8xlarge'|'m7a.medium'|'m7a.large'|'m7a.xlarge'|'m7a.2xlarge'|'m7a.4xlarge'|'m7a.8xlarge'|'m7a.12xlarge'|'m7a.16xlarge'|'m7a.24xlarge'|'m7a.32xlarge'|'m7a.48xlarge'|'m7a.metal-48xl'|'hpc7a.12xlarge'|'hpc7a.24xlarge'|'hpc7a.48xlarge'|'hpc7a.96xlarge'|'c7gd.medium'|'c7gd.large'|'c7gd.xlarge'|'c7gd.2xlarge'|'c7gd.4xlarge'|'c7gd.8xlarge'|'c7gd.12xlarge'|'c7gd.16xlarge'|'m7gd.medium'|'m7gd.large'|'m7gd.xlarge'|'m7gd.2xlarge'|'m7gd.4xlarge'|'m7gd.8xlarge'|'m7gd.12xlarge'|'m7gd.16xlarge'|'r7gd.medium'|'r7gd.large'|'r7gd.xlarge'|'r7gd.2xlarge'|'r7gd.4xlarge'|'r7gd.8xlarge'|'r7gd.12xlarge'|'r7gd.16xlarge'|'r7a.medium'|'r7a.large'|'r7a.xlarge'|'r7a.2xlarge'|'r7a.4xlarge'|'r7a.8xlarge'|'r7a.12xlarge'|'r7a.16xlarge'|'r7a.24xlarge'|'r7a.32xlarge'|'r7a.48xlarge'|'c7i.large'|'c7i.xlarge'|'c7i.2xlarge'|'c7i.4xlarge'|'c7i.8xlarge'|'c7i.12xlarge'|'c7i.16xlarge'|'c7i.24xlarge'|'c7i.48xlarge'|'mac2-m2pro.metal'|'r7iz.large'|'r7iz.xlarge'|'r7iz.2xlarge'|'r7iz.4xlarge'|'r7iz.8xlarge'|'r7iz.12xlarge'|'r7iz.16xlarge'|'r7iz.32xlarge'|'c7a.medium'|'c7a.large'|'c7a.xlarge'|'c7a.2xlarge'|'c7a.4xlarge'|'c7a.8xlarge'|'c7a.12xlarge'|'c7a.16xlarge'|'c7a.24xlarge'|'c7a.32xlarge'|'c7a.48xlarge'|'c7a.metal-48xl'|'r7a.metal-48xl'|'r7i.large'|'r7i.xlarge'|'r7i.2xlarge'|'r7i.4xlarge'|'r7i.8xlarge'|'r7i.12xlarge'|'r7i.16xlarge'|'r7i.24xlarge'|'r7i.48xlarge'|'dl2q.24xlarge'|'mac2-m2.metal'|'i4i.12xlarge'|'i4i.24xlarge'|'c7i.metal-24xl'|'c7i.metal-48xl'|'m7i.metal-24xl'|'m7i.metal-48xl'|'r7i.metal-24xl'|'r7i.metal-48xl'|'r7iz.metal-16xl'|'r7iz.metal-32xl'|'c7gd.metal'|'m7gd.metal'|'r7gd.metal'|'g6.xlarge'|'g6.2xlarge'|'g6.4xlarge'|'g6.8xlarge'|'g6.12xlarge'|'g6.16xlarge'|'g6.24xlarge'|'g6.48xlarge'|'gr6.4xlarge'|'gr6.8xlarge'|'c7i-flex.large'|'c7i-flex.xlarge'|'c7i-flex.2xlarge'|'c7i-flex.4xlarge'|'c7i-flex.8xlarge'|'u7i-12tb.224xlarge'|'u7in-16tb.224xlarge'|'u7in-24tb.224xlarge'|'u7in-32tb.224xlarge'|'u7ib-12tb.224xlarge'|'c7gn.metal'|'r8g.medium'|'r8g.large'|'r8g.xlarge'|'r8g.2xlarge'|'r8g.4xlarge'|'r8g.8xlarge'|'r8g.12xlarge'|'r8g.16xlarge'|'r8g.24xlarge'|'r8g.48xlarge'|'r8g.metal-24xl'|'r8g.metal-48xl'|'mac2-m1ultra.metal'|'g6e.xlarge'|'g6e.2xlarge'|'g6e.4xlarge'|'g6e.8xlarge'|'g6e.12xlarge'|'g6e.16xlarge'|'g6e.24xlarge'|'g6e.48xlarge'|'c8g.medium'|'c8g.large'|'c8g.xlarge'|'c8g.2xlarge'|'c8g.4xlarge'|'c8g.8xlarge'|'c8g.12xlarge'|'c8g.16xlarge'|'c8g.24xlarge'|'c8g.48xlarge'|'c8g.metal-24xl'|'c8g.metal-48xl'|'m8g.medium'|'m8g.large'|'m8g.xlarge'|'m8g.2xlarge'|'m8g.4xlarge'|'m8g.8xlarge'|'m8g.12xlarge'|'m8g.16xlarge'|'m8g.24xlarge'|'m8g.48xlarge'|'m8g.metal-24xl'|'m8g.metal-48xl'|'x8g.medium'|'x8g.large'|'x8g.xlarge'|'x8g.2xlarge'|'x8g.4xlarge'|'x8g.8xlarge'|'x8g.12xlarge'|'x8g.16xlarge'|'x8g.24xlarge'|'x8g.48xlarge'|'x8g.metal-24xl'|'x8g.metal-48xl'|'i7ie.large'|'i7ie.xlarge'|'i7ie.2xlarge'|'i7ie.3xlarge'|'i7ie.6xlarge'|'i7ie.12xlarge'|'i7ie.18xlarge'|'i7ie.24xlarge'|'i7ie.48xlarge'|'i8g.large'|'i8g.xlarge'|'i8g.2xlarge'|'i8g.4xlarge'|'i8g.8xlarge'|'i8g.12xlarge'|'i8g.16xlarge'|'i8g.24xlarge'|'i8g.metal-24xl'|'u7i-6tb.112xlarge'|'u7i-8tb.112xlarge'|'u7inh-32tb.480xlarge'|'p5e.48xlarge'|'p5en.48xlarge'|'f2.12xlarge'|'f2.48xlarge'|'trn2.48xlarge'|'c7i-flex.12xlarge'|'c7i-flex.16xlarge'|'m7i-flex.12xlarge'|'m7i-flex.16xlarge'|'i7ie.metal-24xl'|'i7ie.metal-48xl'|'i8g.48xlarge'|'c8gd.medium'|'c8gd.large'|'c8gd.xlarge'|'c8gd.2xlarge'|'c8gd.4xlarge'|'c8gd.8xlarge'|'c8gd.12xlarge'|'c8gd.16xlarge'|'c8gd.24xlarge'|'c8gd.48xlarge'|'c8gd.metal-24xl'|'c8gd.metal-48xl'|'i7i.large'|'i7i.xlarge'|'i7i.2xlarge'|'i7i.4xlarge'|'i7i.8xlarge'|'i7i.12xlarge'|'i7i.16xlarge'|'i7i.24xlarge'|'i7i.48xlarge'|'i7i.metal-24xl'|'i7i.metal-48xl'|'p6-b200.48xlarge'|'m8gd.medium'|'m8gd.large'|'m8gd.xlarge'|'m8gd.2xlarge'|'m8gd.4xlarge'|'m8gd.8xlarge'|'m8gd.12xlarge'|'m8gd.16xlarge'|'m8gd.24xlarge'|'m8gd.48xlarge'|'m8gd.metal-24xl'|'m8gd.metal-48xl'|'r8gd.medium'|'r8gd.large'|'r8gd.xlarge'|'r8gd.2xlarge'|'r8gd.4xlarge'|'r8gd.8xlarge'|'r8gd.12xlarge'|'r8gd.16xlarge'|'r8gd.24xlarge'|'r8gd.48xlarge'|'r8gd.metal-24xl'|'r8gd.metal-48xl'|'c8gn.medium'|'c8gn.large'|'c8gn.xlarge'|'c8gn.2xlarge'|'c8gn.4xlarge'|'c8gn.8xlarge'|'c8gn.12xlarge'|'c8gn.16xlarge'|'c8gn.24xlarge'|'c8gn.48xlarge'|'c8gn.metal-24xl'|'c8gn.metal-48xl'|'f2.6xlarge'|'p6e-gb200.36xlarge'|'g6f.large'|'g6f.xlarge'|'g6f.2xlarge'|'g6f.4xlarge'|'gr6f.4xlarge'|'p5.4xlarge'|'r8i.large'|'r8i.xlarge'|'r8i.2xlarge'|'r8i.4xlarge'|'r8i.8xlarge'|'r8i.12xlarge'|'r8i.16xlarge'|'r8i.24xlarge'|'r8i.32xlarge'|'r8i.48xlarge'|'r8i.96xlarge'|'r8i.metal-48xl'|'r8i.metal-96xl'|'r8i-flex.large'|'r8i-flex.xlarge'|'r8i-flex.2xlarge'|'r8i-flex.4xlarge'|'r8i-flex.8xlarge'|'r8i-flex.12xlarge'|'r8i-flex.16xlarge'|'m8i.large'|'m8i.xlarge'|'m8i.2xlarge'|'m8i.4xlarge'|'m8i.8xlarge'|'m8i.12xlarge'|'m8i.16xlarge'|'m8i.24xlarge'|'m8i.32xlarge'|'m8i.48xlarge'|'m8i.96xlarge'|'m8i.metal-48xl'|'m8i.metal-96xl'|'m8i-flex.large'|'m8i-flex.xlarge'|'m8i-flex.2xlarge'|'m8i-flex.4xlarge'|'m8i-flex.8xlarge'|'m8i-flex.12xlarge'|'m8i-flex.16xlarge'|'i8ge.large'|'i8ge.xlarge'|'i8ge.2xlarge'|'i8ge.3xlarge'|'i8ge.6xlarge'|'i8ge.12xlarge'|'i8ge.18xlarge'|'i8ge.24xlarge'|'i8ge.48xlarge'|'i8ge.metal-24xl'|'i8ge.metal-48xl'|'mac-m4.metal'|'mac-m4pro.metal'|'r8gn.medium'|'r8gn.large'|'r8gn.xlarge'|'r8gn.2xlarge'|'r8gn.4xlarge'|'r8gn.8xlarge'|'r8gn.12xlarge'|'r8gn.16xlarge'|'r8gn.24xlarge'|'r8gn.48xlarge'|'r8gn.metal-24xl'|'r8gn.metal-48xl'|'c8i.large'|'c8i.xlarge'|'c8i.2xlarge'|'c8i.4xlarge'|'c8i.8xlarge'|'c8i.12xlarge'|'c8i.16xlarge'|'c8i.24xlarge'|'c8i.32xlarge'|'c8i.48xlarge'|'c8i.96xlarge'|'c8i.metal-48xl'|'c8i.metal-96xl'|'c8i-flex.large'|'c8i-flex.xlarge'|'c8i-flex.2xlarge'|'c8i-flex.4xlarge'|'c8i-flex.8xlarge'|'c8i-flex.12xlarge'|'c8i-flex.16xlarge'|'r8gb.medium'|'r8gb.large'|'r8gb.xlarge'|'r8gb.2xlarge'|'r8gb.4xlarge'|'r8gb.8xlarge'|'r8gb.12xlarge'|'r8gb.16xlarge'|'r8gb.24xlarge'|'r8gb.metal-24xl'|'m8a.medium'|'m8a.large'|'m8a.xlarge'|'m8a.2xlarge'|'m8a.4xlarge'|'m8a.8xlarge'|'m8a.12xlarge'|'m8a.16xlarge'|'m8a.24xlarge'|'m8a.48xlarge'|'m8a.metal-24xl'|'m8a.metal-48xl'|'trn2.3xlarge'|'r8a.medium'|'r8a.large'|'r8a.xlarge'|'r8a.2xlarge'|'r8a.4xlarge'|'r8a.8xlarge'|'r8a.12xlarge'|'r8a.16xlarge'|'r8a.24xlarge'|'r8a.48xlarge'|'r8a.metal-24xl'|'r8a.metal-48xl'|'p6-b300.48xlarge'|'c8a.medium'|'c8a.large'|'c8a.xlarge'|'c8a.2xlarge'|'c8a.4xlarge'|'c8a.8xlarge'|'c8a.12xlarge'|'c8a.16xlarge'|'c8a.24xlarge'|'c8a.48xlarge'|'c8a.metal-24xl'|'c8a.metal-48xl'|'c8gb.12xlarge'|'c8gb.16xlarge'|'c8gb.24xlarge'|'c8gb.2xlarge'|'c8gb.4xlarge'|'c8gb.8xlarge'|'c8gb.large'|'c8gb.medium'|'c8gb.metal-24xl'|'c8gb.xlarge'|'c8gb.48xlarge'|'c8gb.metal-48xl'|'m8gb.12xlarge'|'m8gb.16xlarge'|'m8gb.24xlarge'|'m8gb.2xlarge'|'m8gb.4xlarge'|'m8gb.8xlarge'|'m8gb.large'|'m8gb.medium'|'m8gb.xlarge'|'m8gb.48xlarge'|'m8gb.metal-24xl'|'m8gb.metal-48xl'|'m8gn.12xlarge'|'m8gn.16xlarge'|'m8gn.24xlarge'|'m8gn.2xlarge'|'m8gn.48xlarge'|'m8gn.4xlarge'|'m8gn.8xlarge'|'m8gn.large'|'m8gn.medium'|'m8gn.xlarge'|'m8gn.metal-24xl'|'m8gn.metal-48xl'|'x8aedz.12xlarge'|'x8aedz.24xlarge'|'x8aedz.3xlarge'|'x8aedz.6xlarge'|'x8aedz.large'|'x8aedz.metal-12xl'|'x8aedz.metal-24xl'|'x8aedz.xlarge'|'m8azn.medium'|'m8azn.large'|'m8azn.xlarge'|'m8azn.3xlarge'|'m8azn.6xlarge'|'m8azn.12xlarge'|'m8azn.24xlarge'|'m8azn.metal-12xl'|'m8azn.metal-24xl'|'x8i.large'|'x8i.xlarge'|'x8i.2xlarge'|'x8i.4xlarge'|'x8i.8xlarge'|'x8i.12xlarge'|'x8i.16xlarge'|'x8i.24xlarge'|'x8i.32xlarge'|'x8i.48xlarge'|'x8i.64xlarge'|'x8i.96xlarge'|'x8i.metal-48xl'|'x8i.metal-96xl'|'mac-m4max.metal'|'g7e.2xlarge'|'g7e.4xlarge'|'g7e.8xlarge'|'g7e.12xlarge'|'g7e.24xlarge'|'g7e.48xlarge'|'r8id.large'|'r8id.xlarge'|'r8id.2xlarge'|'r8id.4xlarge'|'r8id.8xlarge'|'r8id.12xlarge'|'r8id.16xlarge'|'r8id.24xlarge'|'r8id.32xlarge'|'r8id.48xlarge'|'r8id.96xlarge'|'r8id.metal-48xl'|'r8id.metal-96xl',
                        'MaxPrice': 'string',
                        'SubnetId': 'string',
                        'AvailabilityZone': 'string',
                        'WeightedCapacity': 123.0,
                        'Priority': 123.0,
                        'Placement': {
                            'AvailabilityZoneId': 'string',
                            'Affinity': 'string',
                            'GroupName': 'string',
                            'PartitionNumber': 123,
                            'HostId': 'string',
                            'Tenancy': 'default'|'dedicated'|'host',
                            'SpreadDomain': 'string',
                            'HostResourceGroupArn': 'string',
                            'GroupId': 'string',
                            'AvailabilityZone': 'string'
                        },
                        'BlockDeviceMappings': [
                            {
                                'DeviceName': 'string',
                                'VirtualName': 'string',
                                'Ebs': {
                                    'Encrypted': True|False,
                                    'DeleteOnTermination': True|False,
                                    'Iops': 123,
                                    'Throughput': 123,
                                    'KmsKeyId': 'string',
                                    'SnapshotId': 'string',
                                    'VolumeSize': 123,
                                    'VolumeType': 'standard'|'io1'|'io2'|'gp2'|'sc1'|'st1'|'gp3'
                                },
                                'NoDevice': 'string'
                            },
                        ],
                        'InstanceRequirements': {
                            'VCpuCount': {
                                'Min': 123,
                                'Max': 123
                            },
                            'MemoryMiB': {
                                'Min': 123,
                                'Max': 123
                            },
                            'CpuManufacturers': [
                                'intel'|'amd'|'amazon-web-services'|'apple',
                            ],
                            'MemoryGiBPerVCpu': {
                                'Min': 123.0,
                                'Max': 123.0
                            },
                            'ExcludedInstanceTypes': [
                                'string',
                            ],
                            'InstanceGenerations': [
                                'current'|'previous',
                            ],
                            'SpotMaxPricePercentageOverLowestPrice': 123,
                            'OnDemandMaxPricePercentageOverLowestPrice': 123,
                            'BareMetal': 'included'|'required'|'excluded',
                            'BurstablePerformance': 'included'|'required'|'excluded',
                            'RequireHibernateSupport': True|False,
                            'NetworkInterfaceCount': {
                                'Min': 123,
                                'Max': 123
                            },
                            'LocalStorage': 'included'|'required'|'excluded',
                            'LocalStorageTypes': [
                                'hdd'|'ssd',
                            ],
                            'TotalLocalStorageGB': {
                                'Min': 123.0,
                                'Max': 123.0
                            },
                            'BaselineEbsBandwidthMbps': {
                                'Min': 123,
                                'Max': 123
                            },
                            'AcceleratorTypes': [
                                'gpu'|'fpga'|'inference'|'media',
                            ],
                            'AcceleratorCount': {
                                'Min': 123,
                                'Max': 123
                            },
                            'AcceleratorManufacturers': [
                                'amazon-web-services'|'amd'|'nvidia'|'xilinx'|'habana',
                            ],
                            'AcceleratorNames': [
                                'a100'|'inferentia'|'k520'|'k80'|'m60'|'radeon-pro-v520'|'t4'|'vu9p'|'v100'|'a10g'|'h100'|'t4g'|'l40s'|'l4'|'gaudi-hl-205'|'inferentia2'|'trainium'|'trainium2'|'u30',
                            ],
                            'AcceleratorTotalMemoryMiB': {
                                'Min': 123,
                                'Max': 123
                            },
                            'NetworkBandwidthGbps': {
                                'Min': 123.0,
                                'Max': 123.0
                            },
                            'AllowedInstanceTypes': [
                                'string',
                            ],
                            'MaxSpotPriceAsPercentageOfOptimalOnDemandPrice': 123,
                            'BaselinePerformanceFactors': {
                                'Cpu': {
                                    'References': [
                                        {
                                            'InstanceFamily': 'string'
                                        },
                                    ]
                                }
                            },
                            'RequireEncryptionInTransit': True|False
                        },
                        'ImageId': 'string',
                        'AvailabilityZoneId': 'string'
                    },
                ]
            },
        ],
        FleetId='string',
        TargetCapacitySpecification={
            'TotalTargetCapacity': 123,
            'OnDemandTargetCapacity': 123,
            'SpotTargetCapacity': 123,
            'DefaultTargetCapacityType': 'spot'|'on-demand'|'capacity-block',
            'TargetCapacityUnitType': 'vcpu'|'memory-mib'|'units'
        },
        Context='string'
    )
    
  :type DryRun: boolean
  :param DryRun: 

    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``.

    

  
  :type ExcessCapacityTerminationPolicy: string
  :param ExcessCapacityTerminationPolicy: 

    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.

     

    Supported only for fleets of type ``maintain``.

    

  
  :type LaunchTemplateConfigs: list
  :param LaunchTemplateConfigs: 

    The launch template and overrides.

    

  
    - *(dict) --* 

      Describes a launch template and overrides.

      

    
      - **LaunchTemplateSpecification** *(dict) --* 

        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.

           

          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.

         

        For fleets of type ``request`` and ``maintain``, a maximum of 300 items is allowed across all launch templates.

        

      
        - *(dict) --* 

          Describes overrides for a launch template.

          

        
          - **InstanceType** *(string) --* 

            The instance type.

             

            ``mac1.metal`` is not supported as a launch template override.

             

            .. note::

              

              If you specify ``InstanceType``, 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.

               

              If you specify a maximum price, it must be more than USD $0.001. Specifying a value below USD $0.001 will result in an ``InvalidParameterValue`` error message.

              

            

          
          - **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. For example, ``us-east-2a``.

             

            Either ``AvailabilityZone`` or ``AvailabilityZoneId`` must be specified in the request, but not both.

            

          
          - **WeightedCapacity** *(float) --* 

            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.

             

            .. note::

              

              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.

              

            

          
          - **Priority** *(float) --* 

            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 launch template override has the lowest priority. You can set the same priority for different launch template overrides.

            

          
          - **Placement** *(dict) --* 

            The location where the instance launched, if applicable.

            

          
            - **AvailabilityZoneId** *(string) --* 

              The ID of the Availability Zone of the instance.

               

              On input, you can specify ``AvailabilityZone`` or ``AvailabilityZoneId``, but not both. If you specify neither one, Amazon EC2 automatically selects an Availability Zone for you.

               

              This parameter is not supported for `CreateFleet <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateFleet>`__.

              

            
            - **Affinity** *(string) --* 

              The affinity setting for the instance on the Dedicated Host.

               

              This parameter is not supported for `CreateFleet <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateFleet>`__ or `ImportInstance <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_ImportInstance.html>`__.

              

            
            - **GroupName** *(string) --* 

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

               

              On input, you can specify ``GroupId`` or ``GroupName``, but not both.

              

            
            - **PartitionNumber** *(integer) --* 

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

               

              This parameter is not supported for `CreateFleet <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateFleet>`__.

              

            
            - **HostId** *(string) --* 

              The ID of the Dedicated Host on which the instance resides.

               

              This parameter is not supported for `CreateFleet <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateFleet>`__ or `ImportInstance <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_ImportInstance.html>`__.

              

            
            - **Tenancy** *(string) --* 

              The tenancy of the instance. An instance with a tenancy of ``dedicated`` runs on single-tenant hardware.

               

              This parameter is not supported for `CreateFleet <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateFleet>`__. The ``host`` tenancy is not supported for `ImportInstance <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_ImportInstance.html>`__ or for T3 instances that are configured for the ``unlimited`` CPU credit option.

              

            
            - **SpreadDomain** *(string) --* 

              Reserved for future use.

              

            
            - **HostResourceGroupArn** *(string) --* 

              The ARN of the host resource group in which to launch the instances.

               

              On input, if you specify this parameter, either omit the **Tenancy** parameter or set it to ``host``.

               

              This parameter is not supported for `CreateFleet <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateFleet>`__.

              

            
            - **GroupId** *(string) --* 

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

               

              On input, you can specify ``GroupId`` or ``GroupName``, but not both.

              

            
            - **AvailabilityZone** *(string) --* 

              The Availability Zone of the instance.

               

              On input, you can specify ``AvailabilityZone`` or ``AvailabilityZoneId``, but not both. If you specify neither one, Amazon EC2 automatically selects an Availability Zone for you.

               

              This parameter is not supported for `CreateFleet <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateFleet>`__.

              

            
          
          - **BlockDeviceMappings** *(list) --* 

            The block device mappings, which define the EBS volumes and instance store volumes to attach to the instance at launch.

             

            Supported only for fleets of type ``instant``.

             

            For more information, see `Block device mappings for volumes on Amazon EC2 instances <https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/block-device-mapping-concepts.html>`__ in the *Amazon EC2 User Guide*.

            

          
            - *(dict) --* 

              Describes a block device mapping, which defines the EBS volumes and instance store volumes to attach to an instance at launch.

               

              To override a block device mapping specified in the launch template:

               

              
              * Specify the exact same ``DeviceName`` here as specified in the launch template.
               
              * Only specify the parameters you want to change.
               
              * Any parameters you don't specify here will keep their original launch template values.
              

               

              To add a new block device mapping:

               

              
              * Specify a ``DeviceName`` that doesn't exist in the launch template.
               
              * Specify all desired parameters here.
              

              

            
              - **DeviceName** *(string) --* 

                The device name (for example, ``/dev/sdh`` or ``xvdh``).

                

              
              - **VirtualName** *(string) --* 

                The virtual device name ( ``ephemeralN``). Instance store volumes are numbered starting from 0. An instance type with 2 available instance store volumes can specify mappings for ``ephemeral0`` and ``ephemeral1``. The number of available instance store volumes depends on the instance type. After you connect to the instance, you must mount the volume.

                 

                NVMe instance store volumes are automatically enumerated and assigned a device name. Including them in your block device mapping has no effect.

                 

                Constraints: For M3 instances, you must specify instance store volumes in the block device mapping for the instance. When you launch an M3 instance, we ignore any instance store volumes specified in the block device mapping for the AMI.

                

              
              - **Ebs** *(dict) --* 

                Parameters used to automatically set up EBS volumes when the instance is launched.

                

              
                - **Encrypted** *(boolean) --* 

                  Indicates whether the encryption state of an EBS volume is changed while being restored from a backing snapshot. The effect of setting the encryption state to ``true`` depends on the volume origin (new or from a snapshot), starting encryption state, ownership, and whether encryption by default is enabled. For more information, see `Amazon EBS encryption <https://docs.aws.amazon.com/ebs/latest/userguide/ebs-encryption.html>`__ in the *Amazon EBS User Guide*.

                   

                  In no case can you remove encryption from an encrypted volume.

                   

                  Encrypted volumes can only be attached to instances that support Amazon EBS encryption. For more information, see `Supported instance types <https://docs.aws.amazon.com/ebs/latest/userguide/ebs-encryption-requirements.html#ebs-encryption_supported_instances>`__.

                   

                  This parameter is not returned by `DescribeImageAttribute <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DescribeImageAttribute>`__.

                   

                  For `CreateImage <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateImage>`__ and `RegisterImage <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_RegisterImage>`__, whether you can include this parameter, and the allowed values differ depending on the type of block device mapping you are creating.

                   

                  
                  * If you are creating a block device mapping for a **new (empty) volume**, you can include this parameter, and specify either ``true`` for an encrypted volume, or ``false`` for an unencrypted volume. If you omit this parameter, it defaults to ``false`` (unencrypted).
                   
                  * If you are creating a block device mapping from an **existing encrypted or unencrypted snapshot**, you must omit this parameter. If you include this parameter, the request will fail, regardless of the value that you specify.
                   
                  * If you are creating a block device mapping from an **existing unencrypted volume**, you can include this parameter, but you must specify ``false``. If you specify ``true``, the request will fail. In this case, we recommend that you omit the parameter.
                   
                  * If you are creating a block device mapping from an **existing encrypted volume**, you can include this parameter, and specify either ``true`` or ``false``. However, if you specify ``false``, the parameter is ignored and the block device mapping is always encrypted. In this case, we recommend that you omit the parameter.
                  

                  

                
                - **DeleteOnTermination** *(boolean) --* 

                  Indicates whether the EBS volume is deleted on instance termination. For more information, see `Preserve data when an instance is terminated <https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/preserving-volumes-on-termination.html>`__ in the *Amazon EC2 User Guide*.

                  

                
                - **Iops** *(integer) --* 

                  The number of I/O operations per second (IOPS). For ``gp3``, ``io1``, and ``io2`` volumes, this represents the number of IOPS that are provisioned for the volume. For ``gp2`` volumes, this represents the baseline performance of the volume and the rate at which the volume accumulates I/O credits for bursting.

                   

                  The following are the supported values for each volume type:

                   

                  
                  * ``gp3``: 3,000 - 80,000 IOPS
                   
                  * ``io1``: 100 - 64,000 IOPS
                   
                  * ``io2``: 100 - 256,000 IOPS
                  

                   

                  For ``io2`` volumes, you can achieve up to 256,000 IOPS on `instances built on the Nitro System <https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html#ec2-nitro-instances>`__. On other instances, you can achieve performance up to 32,000 IOPS.

                   

                  This parameter is required for ``io1`` and ``io2`` volumes. The default for ``gp3`` volumes is 3,000 IOPS.

                  

                
                - **Throughput** *(integer) --* 

                  The throughput that the volume supports, in MiB/s.

                   

                  This parameter is valid only for ``gp3`` volumes.

                   

                  Valid Range: Minimum value of 125. Maximum value of 2,000.

                  

                
                - **KmsKeyId** *(string) --* 

                  Identifier (key ID, key alias, key ARN, or alias ARN) of the customer managed KMS key to use for EBS encryption.

                   

                  This parameter is only supported on ``BlockDeviceMapping`` objects called by `CreateFleet <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateFleet.html>`__, `RequestSpotInstances <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_RequestSpotInstances.html>`__, and `RunInstances <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_RunInstances.html>`__.

                  

                
                - **SnapshotId** *(string) --* 

                  The ID of the snapshot.

                  

                
                - **VolumeSize** *(integer) --* 

                  The size of the volume, in GiBs. You must specify either a snapshot ID or a volume size. If you specify a snapshot, the default is the snapshot size. You can specify a volume size that is equal to or larger than the snapshot size.

                   

                  The following are the supported sizes for each volume type:

                   

                  
                  * ``gp2``: 1 - 16,384 GiB
                   
                  * ``gp3``: 1 - 65,536 GiB
                   
                  * ``io1``: 4 - 16,384 GiB
                   
                  * ``io2``: 4 - 65,536 GiB
                   
                  * ``st1`` and ``sc1``: 125 - 16,384 GiB
                   
                  * ``standard``: 1 - 1024 GiB
                  

                  

                
                - **VolumeType** *(string) --* 

                  The volume type. For more information, see `Amazon EBS volume types <https://docs.aws.amazon.com/ebs/latest/userguide/ebs-volume-types.html>`__ in the *Amazon EBS User Guide*.

                  

                
              
              - **NoDevice** *(string) --* 

                To omit the device from the block device mapping, specify an empty string. When this property is specified, the device is removed from the block device mapping regardless of the assigned value.

                

              
            
        
          - **InstanceRequirements** *(dict) --* 

            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 ``InstanceType``.

              

            

          
            - **VCpuCount** *(dict) --* **[REQUIRED]** 

              The minimum and maximum number of vCPUs.

              

            
              - **Min** *(integer) --* **[REQUIRED]** 

                The minimum number of vCPUs. To specify no minimum limit, specify ``0``.

                

              
              - **Max** *(integer) --* 

                The maximum number of vCPUs. To specify no maximum limit, omit this parameter.

                

              
            
            - **MemoryMiB** *(dict) --* **[REQUIRED]** 

              The minimum and maximum amount of memory, in MiB.

              

            
              - **Min** *(integer) --* **[REQUIRED]** 

                The minimum amount of memory, in MiB. To specify no minimum limit, specify ``0``.

                

              
              - **Max** *(integer) --* 

                The maximum amount of memory, in MiB. To specify no maximum limit, omit this parameter.

                

              
            
            - **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``.
               
              * For instance types with Apple CPUs, specify ``apple``.
              

               

              .. 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** *(dict) --* 

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

               

              Default: No minimum or maximum limits

              

            
              - **Min** *(float) --* 

                The minimum amount of memory per vCPU, in GiB. To specify no minimum limit, omit this parameter.

                

              
              - **Max** *(float) --* 

                The maximum amount of memory per vCPU, in GiB. To specify no maximum limit, omit this parameter.

                

              
            
            - **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 family, 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.

               

              .. note::

                

                If you specify ``ExcludedInstanceTypes``, you can't specify ``AllowedInstanceTypes``.

                

               

              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 <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

              

            
              - *(string) --* 

              
          
            - **SpotMaxPricePercentageOverLowestPrice** *(integer) --* 

              [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>`__.

               

              .. note::

                

                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``

              

            
            - **OnDemandMaxPricePercentageOverLowestPrice** *(integer) --* 

              [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 indicate no price protection threshold, 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>`__.

               

              .. 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 <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``

              

            
            - **RequireHibernateSupport** *(boolean) --* 

              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``

              

            
            - **NetworkInterfaceCount** *(dict) --* 

              The minimum and maximum number of network interfaces.

               

              Default: No minimum or maximum limits

              

            
              - **Min** *(integer) --* 

                The minimum number of network interfaces. To specify no minimum limit, omit this parameter.

                

              
              - **Max** *(integer) --* 

                The maximum number of network interfaces. To specify no maximum limit, omit this parameter.

                

              
            
            - **LocalStorage** *(string) --* 

              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``

              

            
            - **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** *(dict) --* 

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

               

              Default: No minimum or maximum limits

              

            
              - **Min** *(float) --* 

                The minimum amount of total local storage, in GB. To specify no minimum limit, omit this parameter.

                

              
              - **Max** *(float) --* 

                The maximum amount of total local storage, in GB. To specify no maximum limit, omit this parameter.

                

              
            
            - **BaselineEbsBandwidthMbps** *(dict) --* 

              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

              

            
              - **Min** *(integer) --* 

                The minimum baseline bandwidth, in Mbps. To specify no minimum limit, omit this parameter.

                

              
              - **Max** *(integer) --* 

                The maximum baseline bandwidth, in Mbps. To specify no maximum limit, omit this parameter.

                

              
            
            - **AcceleratorTypes** *(list) --* 

              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``.
               
              * For instance types with Media accelerators, specify ``media``.
              

               

              Default: Any accelerator type

              

            
              - *(string) --* 

              
          
            - **AcceleratorCount** *(dict) --* 

              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. To specify no minimum limit, omit this parameter.

                

              
              - **Max** *(integer) --* 

                The maximum number of accelerators. To specify no maximum limit, omit this parameter. To exclude accelerator-enabled instance types, set ``Max`` to ``0``.

                

              
            
            - **AcceleratorManufacturers** *(list) --* 

              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

              

            
              - *(string) --* 

              
          
            - **AcceleratorNames** *(list) --* 

              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 Amazon Web Services Inferentia2 chips, specify ``inferentia2``.
               
              * For instance types with Habana Gaudi HL-205 GPUs, specify ``gaudi-hl-205``.
               
              * For instance types with NVIDIA GRID K520 GPUs, specify ``k520``.
               
              * For instance types with NVIDIA K80 GPUs, specify ``k80``.
               
              * For instance types with NVIDIA L4 GPUs, specify ``l4``.
               
              * For instance types with NVIDIA L40S GPUs, specify ``l40s``.
               
              * 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 Amazon Web Services Trainium chips, specify ``trainium``.
               
              * For instance types with Amazon Web Services Trainium2 chips, specify ``trainium2``.
               
              * For instance types with NVIDIA T4 GPUs, specify ``t4``.
               
              * For instance types with NVIDIA T4G GPUs, specify ``t4g``.
               
              * For instance types with Xilinx U30 cards, specify ``u30``.
               
              * For instance types with Xilinx VU9P FPGAs, specify ``vu9p``.
               
              * For instance types with NVIDIA V100 GPUs, specify ``v100``.
              

               

              Default: Any accelerator

              

            
              - *(string) --* 

              
          
            - **AcceleratorTotalMemoryMiB** *(dict) --* 

              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. To specify no minimum limit, omit this parameter.

                

              
              - **Max** *(integer) --* 

                The maximum amount of accelerator memory, in MiB. To specify no maximum limit, omit this parameter.

                

              
            
            - **NetworkBandwidthGbps** *(dict) --* 

              The minimum and maximum amount of baseline network bandwidth, in gigabits per second (Gbps). For more information, see `Amazon EC2 instance network bandwidth <https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-network-bandwidth.html>`__ in the *Amazon EC2 User Guide*.

               

              Default: No minimum or maximum limits

              

            
              - **Min** *(float) --* 

                The minimum amount of network bandwidth, in Gbps. To specify no minimum limit, omit this parameter.

                

              
              - **Max** *(float) --* 

                The maximum amount of network bandwidth, in Gbps. To specify no maximum limit, omit this parameter.

                

              
            
            - **AllowedInstanceTypes** *(list) --* 

              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.

               

              .. note::

                

                If you specify ``AllowedInstanceTypes``, you can't specify ``ExcludedInstanceTypes``.

                

               

              Default: All instance types

              

            
              - *(string) --* 

              
          
            - **MaxSpotPriceAsPercentageOfOptimalOnDemandPrice** *(integer) --* 

              [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.

               

              .. note::

                

                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``.

                

              

            
            - **BaselinePerformanceFactors** *(dict) --* 

              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** *(dict) --* 

                The CPU performance to consider, using an instance family as the baseline reference.

                

              
                - **References** *(list) --* 

                  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.

                   

                  .. note::

                    

                    Currently, only one instance family can be specified in the list.

                    

                  

                
                  - *(dict) --* 

                    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.

                     

                    .. note::

                      

                      Currently, only one instance family can be specified in the list.

                      

                    

                  
                    - **InstanceFamily** *(string) --* 

                      The instance family to use as a baseline reference.

                       

                      .. note::

                        

                        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 `GetInstanceTypesFromInstanceRequirements <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_GetInstanceTypesFromInstanceRequirements>`__ and an exception for `CreateFleet <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateFleet>`__, `RequestSpotFleet <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_RequestSpotFleet>`__, `ModifyFleet <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_ModifyFleet>`__, and `ModifySpotFleetRequest <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_ModifySpotFleetRequest>`__.

                      

                    
                  
              
              
            
            - **RequireEncryptionInTransit** *(boolean) --* 

              Specifies whether instance types must support encrypting in-transit traffic between instances. For more information, including the supported instance types, see `Encryption in transit <https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/data-protection.html#encryption-transit>`__ in the *Amazon EC2 User Guide*.

               

              Default: ``false``

              

            
          
          - **ImageId** *(string) --* 

            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*.

             

            .. note::

              

              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.

              

            

          
          - **AvailabilityZoneId** *(string) --* 

            The ID of the Availability Zone in which to launch the instances. For example, ``use2-az1``.

             

            Either ``AvailabilityZone`` or ``AvailabilityZoneId`` must be specified in the request, but not both.

            

          
        
    
    

  :type FleetId: string
  :param FleetId: **[REQUIRED]** 

    The ID of the EC2 Fleet.

    

  
  :type TargetCapacitySpecification: dict
  :param TargetCapacitySpecification: 

    The size of the EC2 Fleet.

    

  
    - **TotalTargetCapacity** *(integer) --* **[REQUIRED]** 

      The number of units to request, filled using the default target capacity type.

      

    
    - **OnDemandTargetCapacity** *(integer) --* 

      The number of On-Demand units to request.

      

    
    - **SpotTargetCapacity** *(integer) --* 

      The number of Spot units to request.

      

    
    - **DefaultTargetCapacityType** *(string) --* 

      The default target capacity type.

      

    
    - **TargetCapacityUnitType** *(string) --* 

      The unit for the target capacity. You can specify this parameter only when using attributed-based instance type selection.

       

      Default: ``units`` (the number of instances)

      

    
  
  :type Context: string
  :param Context: 

    Reserved.

    

  
  
  :rtype: dict
  :returns: 
    
    **Response Syntax**

    
    ::

      {
          'Return': True|False
      }
      
    **Response Structure**

    

    - *(dict) --* 
      

      - **Return** *(boolean) --* 

        If the request succeeds, the response returns ``true``. If the request fails, no response is returned, and instead an error message is returned.

        
  