Skip to content

EC2  >  Operations  >  create_fleet

create_fleet

Operation

create_fleet async

create_fleet(input: CreateFleetInput, plugins: list[Plugin] | None = None) -> CreateFleetOutput

Creates an EC2 Fleet that contains the configuration information for On-Demand Instances and Spot Instances. Instances are launched immediately if there is available capacity.

A single EC2 Fleet can include multiple launch specifications that vary by instance type, AMI, Availability Zone, or subnet.

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

Parameters:

Name Type Description Default
input CreateFleetInput

An instance of CreateFleetInput.

required
plugins list[Plugin] | None

A list of callables that modify the configuration dynamically. Changes made by these plugins only apply for the duration of the operation execution and will not affect any other operation invocations.

None

Returns:

Type Description
CreateFleetOutput

An instance of CreateFleetOutput.

Input

CreateFleetInput dataclass

Bases: _SerdeShape

Dataclass for CreateFleetInput structure.

Attributes

client_token class-attribute instance-attribute
client_token: str | None = ...

Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. If you do not specify a client token, a randomly generated token is used for the request to ensure idempotency.

For more information, see Ensuring idempotency.

This field is autopopulated if not provided.

context class-attribute instance-attribute
context: str | None = ...

Reserved.

dry_run class-attribute instance-attribute
dry_run: bool | None = ...

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 class-attribute instance-attribute
excess_capacity_termination_policy: str | None = ...

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.

launch_template_configs class-attribute instance-attribute
launch_template_configs: list[FleetLaunchTemplateConfigRequest] | None = ...

The configuration for the EC2 Fleet.

on_demand_options class-attribute instance-attribute
on_demand_options: OnDemandOptionsRequest | None = ...

Describes the configuration of On-Demand Instances in an EC2 Fleet.

replace_unhealthy_instances class-attribute instance-attribute
replace_unhealthy_instances: bool | None = ...

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.

reserved_capacity_options class-attribute instance-attribute
reserved_capacity_options: ReservedCapacityOptionsRequest | None = ...

Defines EC2 Fleet preferences for utilizing reserved capacity when DefaultTargetCapacityType is set to reserved-capacity.

Supported only for fleets of type instant.

spot_options class-attribute instance-attribute
spot_options: SpotOptionsRequest | None = ...

Describes the configuration of Spot Instances in an EC2 Fleet.

tag_specifications class-attribute instance-attribute
tag_specifications: list[TagSpecification] | None = ...

The key-value pair for tagging the EC2 Fleet request on creation. For more information, see Tag your resources.

If the fleet type is instant, specify a resource type of fleet to tag the fleet, instance to tag the instances at launch, volume to tag the volumes at launch, or network-interface to tag the network interfaces at launch.

If the fleet type is maintain or request, specify a resource type of fleet to tag the fleet. You cannot specify a resource type of instance, volume, or network-interface. To tag instances at launch, specify the tags in a launch template.

target_capacity_specification class-attribute instance-attribute
target_capacity_specification: TargetCapacitySpecificationRequest | None = ...

The number of units to request.

terminate_instances_with_expiration class-attribute instance-attribute
terminate_instances_with_expiration: bool | None = ...

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

type class-attribute instance-attribute
type: str | None = ...

The fleet type. The default value is maintain.

  • maintain - The EC2 Fleet places an asynchronous request for your desired capacity, and continues to maintain your desired Spot capacity by replenishing interrupted Spot Instances.

  • request - The EC2 Fleet places an asynchronous one-time request for your desired capacity, but does submit Spot requests in alternative capacity pools if Spot capacity is unavailable, and does not maintain Spot capacity if Spot Instances are interrupted.

  • instant - The EC2 Fleet places a synchronous one-time request for your desired capacity, and returns errors for any instances that could not be launched.

For more information, see EC2 Fleet request types in the Amazon EC2 User Guide.

valid_from class-attribute instance-attribute
valid_from: datetime | None = ...

The start date and time of the request, in UTC format (for example, YYYY-MM-DDTHH:MM:SSZ). The default is to start fulfilling the request immediately.

valid_until class-attribute instance-attribute
valid_until: datetime | None = ...

The end date and time of the request, in UTC format (for example, YYYY-MM-DDTHH:MM:SSZ). At this point, no new EC2 Fleet requests are placed or able to fulfill the request. If no value is specified, the request remains until you cancel it.

Output

CreateFleetOutput dataclass

Bases: _SerdeShape

Dataclass for CreateFleetOutput structure.

Attributes

errors class-attribute instance-attribute
errors: list[CreateFleetError] | None = ...

Information about the instances that could not be launched by the fleet. Supported only for fleets of type instant.

fleet_id class-attribute instance-attribute
fleet_id: str | None = ...

The ID of the EC2 Fleet.

instances class-attribute instance-attribute
instances: list[CreateFleetInstance] | None = ...

Information about the instances that were launched by the fleet. Supported only for fleets of type instant.

response_metadata class-attribute instance-attribute
response_metadata: ResponseMetadata = ...

Metadata about the response that produced this output. Use this to recover the request identifiers a service's support team needs in order to investigate a call. Members of the metadata are individually optional.