TaskDefinitionProps Struct

The properties for task definitions.

Source: aws-ecs/lib/base/task-definition.ts
Type last changed: v2.178.0 · 6 Feb 2025

Example

const vpc = ec2.Vpc.fromLookup(this, 'Vpc', {
  isDefault: true,
});

const cluster = new ecs.Cluster(this, 'FargateCluster', { vpc });

const taskDefinition = new ecs.TaskDefinition(this, 'TD', {
  memoryMiB: '512',
  cpu: '256',
  compatibility: ecs.Compatibility.FARGATE,
});

// Use custom() option - specify custom capacity provider strategy
const runTaskWithCustom = new tasks.EcsRunTask(this, 'RunTaskWithCustom', {
  cluster,
  taskDefinition,
  launchTarget: new tasks.EcsFargateLaunchTarget({
    platformVersion: ecs.FargatePlatformVersion.VERSION1_4,
    capacityProviderOptions: tasks.CapacityProviderOptions.custom([
      { capacityProvider: 'FARGATE_SPOT', weight: 2, base: 1 },
      { capacityProvider: 'FARGATE', weight: 1 },
    ]),
  }),
});

// Use default() option - uses cluster's default capacity provider strategy
const runTaskWithDefault = new tasks.EcsRunTask(this, 'RunTaskWithDefault', {
  cluster,
  taskDefinition,
  launchTarget: new tasks.EcsFargateLaunchTarget({
    platformVersion: ecs.FargatePlatformVersion.VERSION1_4,
    capacityProviderOptions: tasks.CapacityProviderOptions.default(),
  }),
});

Properties

compatibilityCompatibilitycompatibilityCompatibilitycompatibilityCompatibilityCompatibilityCompatibilityCompatibilityCompatibilityrequired#

The task launch type compatibility requirement.

cpustringcpustrcpuStringCpustringCpu*string= CPU units are not specified.#

The number of cpu units used by the task.

notes

If you are using the EC2 launch type, this field is optional and any value can be used. If you are using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the memory parameter:

256 (.25 vCPU) - Available memory values: 512 (0.5 GB), 1024 (1 GB), 2048 (2 GB)

512 (.5 vCPU) - Available memory values: 1024 (1 GB), 2048 (2 GB), 3072 (3 GB), 4096 (4 GB)

1024 (1 vCPU) - Available memory values: 2048 (2 GB), 3072 (3 GB), 4096 (4 GB), 5120 (5 GB), 6144 (6 GB), 7168 (7 GB), 8192 (8 GB)

2048 (2 vCPU) - Available memory values: Between 4096 (4 GB) and 16384 (16 GB) in increments of 1024 (1 GB)

4096 (4 vCPU) - Available memory values: Between 8192 (8 GB) and 30720 (30 GB) in increments of 1024 (1 GB)

8192 (8 vCPU) - Available memory values: Between 16384 (16 GB) and 61440 (60 GB) in increments of 4096 (4 GB)

16384 (16 vCPU) - Available memory values: Between 32768 (32 GB) and 122880 (120 GB) in increments of 8192 (8 GB)

enableFaultInjectionbooleanenable_fault_injectionboolenableFaultInjectionBooleanEnableFaultInjectionboolEnableFaultInjection*bool= undefined - ECS default setting …#

Enables fault injection and allows for fault injection requests to be accepted from the task's containers.

Fault injection only works with tasks using the {@link NetworkMode.AWS_VPC} or {@link NetworkMode.HOST} network modes.

default

Default: undefined - ECS default setting is false

ephemeralStorageGiBnumberephemeral_storage_gi_bint | floatephemeralStorageGiBNumberEphemeralStorageGiBdoubleEphemeralStorageGiB*float64= Undefined, in which case, the ta…#

The amount (in GiB) of ephemeral storage to be allocated to the task.

Only supported in Fargate platform version 1.4.0 or later for Linux tasks, and platform version 1.0.0 or later for Windows tasks.

default

Default: Undefined, in which case, the task will receive 20GiB ephemeral storage.

executionRoleIRoleexecution_roleIRoleexecutionRoleIRoleExecutionRoleIRoleExecutionRoleIRole= An execution role will be automa…#

The name of the IAM task execution role that grants the ECS agent permission to call AWS APIs on your behalf.

The role will be used to retrieve container images from ECR and create CloudWatch log groups.

default

Default: An execution role will be automatically created if you use ECR images in your task definition.

familystringfamilystrfamilyStringFamilystringFamily*string= Automatically generated name.#

The name of a family that this task definition is registered to.

A family groups multiple versions of a task definition.

inferenceAcceleratorsInferenceAccelerator[]inference_acceleratorstyping.List[InferenceAccelerator]inferenceAcceleratorsList<InferenceAccelerator>InferenceAcceleratorsInferenceAccelerator[]InferenceAccelerators*[]InferenceAccelerator= No inference accelerators.deprecated#

ECS TaskDefinition's inferenceAccelerator is EOL since April 2024

Not supported in Fargate.

ipcModeIpcModeipc_modeIpcModeipcModeIpcModeIpcModeIpcModeIpcModeIpcMode= IpcMode used by the task is not …#

The IPC resource namespace to use for the containers in the task.

Not supported in Fargate and Windows containers.

default

Default: IpcMode used by the task is not specified

memoryMiBstringmemory_mi_bstrmemoryMiBStringMemoryMiBstringMemoryMiB*string= Memory used by task is not speci…#

The amount (in MiB) of memory used by the task.

notes · default

If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the cpu parameter:

512 (0.5 GB), 1024 (1 GB), 2048 (2 GB) - Available cpu values: 256 (.25 vCPU)

1024 (1 GB), 2048 (2 GB), 3072 (3 GB), 4096 (4 GB) - Available cpu values: 512 (.5 vCPU)

2048 (2 GB), 3072 (3 GB), 4096 (4 GB), 5120 (5 GB), 6144 (6 GB), 7168 (7 GB), 8192 (8 GB) - Available cpu values: 1024 (1 vCPU)

Between 4096 (4 GB) and 16384 (16 GB) in increments of 1024 (1 GB) - Available cpu values: 2048 (2 vCPU)

Between 8192 (8 GB) and 30720 (30 GB) in increments of 1024 (1 GB) - Available cpu values: 4096 (4 vCPU)

Between 16384 (16 GB) and 61440 (60 GB) in increments of 4096 (4 GB) - Available cpu values: 8192 (8 vCPU)

Between 32768 (32 GB) and 122880 (120 GB) in increments of 8192 (8 GB) - Available cpu values: 16384 (16 vCPU)

Default: Memory used by task is not specified.

networkModeNetworkModenetwork_modeNetworkModenetworkModeNetworkModeNetworkModeNetworkModeNetworkModeNetworkMode= NetworkMode.Bridge for EC2 & Ext…#

The networking mode to use for the containers in the task.

On Fargate, the only supported networking mode is AwsVpc.

default

Default: NetworkMode.Bridge for EC2 & External tasks, AwsVpc for Fargate tasks.

pidModePidModepid_modePidModepidModePidModePidModePidModePidModePidMode= PidMode used by the task is not …#

The process namespace to use for the containers in the task.

notes · default

Only supported for tasks that are hosted on AWS Fargate if the tasks are using platform version 1.4.0 or later (Linux). Only the TASK option is supported for Linux-based Fargate containers. Not supported in Windows containers. If pidMode is specified for a Fargate task, then runtimePlatform.operatingSystemFamily must also be specified. For more information, see Task Definition Parameters.

Default: PidMode used by the task is not specified

placementConstraintsPlacementConstraint[]placement_constraintstyping.List[PlacementConstraint]placementConstraintsList<PlacementConstraint>PlacementConstraintsPlacementConstraint[]PlacementConstraints*[]PlacementConstraint= No placement constraints.#

The placement constraints to use for tasks in the service.

You can specify a maximum of 10 constraints per task (this limit includes constraints in the task definition and those specified at run time).

Not supported in Fargate.

proxyConfigurationProxyConfigurationproxy_configurationProxyConfigurationproxyConfigurationProxyConfigurationProxyConfigurationProxyConfigurationProxyConfigurationProxyConfiguration= No proxy configuration.#

The configuration details for the App Mesh proxy.

runtimePlatformRuntimePlatformruntime_platformRuntimePlatformruntimePlatformRuntimePlatformRuntimePlatformRuntimePlatformRuntimePlatformRuntimePlatform= Undefined.#

The operating system that your task definitions are running on.

A runtimePlatform is supported only for tasks using the Fargate launch type.

taskRoleIRoletask_roleIRoletaskRoleIRoleTaskRoleIRoleTaskRoleIRole= A task role is automatically cre…#

The name of the IAM role that grants containers in the task permission to call AWS APIs on your behalf.

default

Default: A task role is automatically created for you.

volumesVolume[]volumestyping.List[Volume]volumesList<Volume>VolumesVolume[]Volumes*[]Volume= No volumes are passed to the Doc…#

The list of volume definitions for the task.

For more information, see Task Definition Parameter Volumes.

default

Default: No volumes are passed to the Docker daemon on a container instance.

Used as props by

TaskDefinition

TaskDefinitionProps Struct ​

Example ​

Properties ​

Used as props by ​

TaskDefinitionProps Struct

Example

Properties

Used as props by