# ApplicationMultipleTargetGroupsEc2ServiceProps

The properties for the ApplicationMultipleTargetGroupsEc2Service service.

Extends: ApplicationMultipleTargetGroupsEc2ServiceProps
Extends: ApplicationMultipleTargetGroupsServiceBaseProps
Used as props by: ApplicationMultipleTargetGroupsEc2Service

- Source: [`aws-ecs-patterns/lib/ecs/application-multiple-target-groups-ecs-service.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0/packages/aws-cdk-lib/aws-ecs-patterns/lib/ecs/application-multiple-target-groups-ecs-service.ts#L16)
- Type last changed: v2.19.0 · 1 Apr 2022

## Example

```ts
// One application load balancer with one listener and two target groups.
declare const cluster: ecs.Cluster;
const loadBalancedEc2Service = new ecsPatterns.ApplicationMultipleTargetGroupsEc2Service(this, 'Service', {
  cluster,
  memoryLimitMiB: 256,
  taskImageOptions: {
    image: ecs.ContainerImage.fromRegistry("amazon/amazon-ecs-sample"),
  },
  targetGroups: [
    {
      containerPort: 80,
    },
    {
      containerPort: 90,
      pathPattern: 'a/b/c',
      priority: 10,
    },
  ],
});
```

## Properties

- `cloudMapOptions`: [CloudMapOptions](/cdk/api/v2/docs/aws-cdk-lib.aws_ecs.CloudMapOptions.html) — The options for configuring an Amazon ECS service to use service discovery.

  **Default:** AWS Cloud Map service discovery is not enabled.

- `cluster`: [ICluster](/cdk/api/v2/docs/aws-cdk-lib.aws_ecs.ICluster.html) — The name of the cluster that hosts the service.

  **Default:** create a new cluster; if both cluster and vpc are omitted, a new VPC will be created for you.

  If a cluster is specified, the vpc construct should be omitted. Alternatively, you can omit both cluster and vpc.

- `cpu`: number — The minimum number of CPU units to reserve for the container.

  **Default:** No minimum CPU units reserved.

  Valid values, which determines your range of valid values for the memory parameter:

- `desiredCount`: number — The desired number of instantiations of the task definition to keep running on the service.

  **Default:** The default is 1 for all new services and uses the existing service's desired count when updating an existing service.

- `enableECSManagedTags`: boolean = false — Specifies whether to enable Amazon ECS managed tags for the tasks within the service.

  For more information, see
  [Tagging Your Amazon ECS Resources](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ecs-using-tags.html)

- `enableExecuteCommand`: boolean = false — Whether ECS Exec should be enabled.

- `healthCheckGracePeriod`: [Duration](/cdk/api/v2/docs/aws-cdk-lib.Duration.html) — The period of time, in seconds, that the Amazon ECS service scheduler ignores unhealthy Elastic Load Balancing target health checks after a task has first started.

  **Default:** defaults to 60 seconds if at least one load balancer is in-use and it is not already set

- `loadBalancers`: [ApplicationLoadBalancerProps](/cdk/api/v2/docs/aws-cdk-lib.aws_ecs_patterns.ApplicationLoadBalancerProps.html)[] — The application load balancer that will serve traffic to the service.

  **Default:** a new load balancer with a listener will be created.

- `memoryLimitMiB`: number — The amount (in MiB) of memory to present to the container.

  **Default:** No memory limit.

  If your container attempts to exceed the allocated memory, the container
  is terminated.

  At least one of memoryLimitMiB and memoryReservationMiB is required.

- `memoryReservationMiB`: number — The soft limit (in MiB) of memory to reserve for the container.

  **Default:** No memory reserved.

  When system memory is under heavy contention, Docker attempts to keep the
  container memory to this soft limit. However, your container can consume more
  memory when it needs to, up to either the hard limit specified with the memory
  parameter (if applicable), or all of the available memory on the container
  instance, whichever comes first.

  At least one of memoryLimitMiB and memoryReservationMiB is required.

  Note that this setting will be ignored if TaskImagesOptions is specified

- `placementConstraints`: [PlacementConstraint](/cdk/api/v2/docs/aws-cdk-lib.aws_ecs.PlacementConstraint.html)[] — The placement constraints to use for tasks in the service.

  **Default:** No constraints.

  For more information, see
  [Amazon ECS Task Placement Constraints](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task-placement-constraints.html).

- `placementStrategies`: [PlacementStrategy](/cdk/api/v2/docs/aws-cdk-lib.aws_ecs.PlacementStrategy.html)[] — The placement strategies to use for tasks in the service.

  **Default:** No strategies.

  For more information, see
  [Amazon ECS Task Placement Strategies](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task-placement-strategies.html).

- `propagateTags`: [PropagatedTagSource](/cdk/api/v2/docs/aws-cdk-lib.aws_ecs.PropagatedTagSource.html) = none — Specifies whether to propagate the tags from the task definition or the service to the tasks in the service.

  Tags can only be propagated to the tasks within the service during service creation.

- `serviceName`: string — The name of the service.

  **Default:** CloudFormation-generated name.

- `targetGroups`: [ApplicationTargetProps](/cdk/api/v2/docs/aws-cdk-lib.aws_ecs_patterns.ApplicationTargetProps.html)[] — Properties to specify ALB target groups.

  **Default:** default portMapping registered as target group and attached to the first defined listener

- `taskDefinition`: [Ec2TaskDefinition](/cdk/api/v2/docs/aws-cdk-lib.aws_ecs.Ec2TaskDefinition.html) = none — The task definition to use for tasks in the service. Only one of TaskDefinition or TaskImageOptions must be specified.

  [disable-awslint:ref-via-interface]

- `taskImageOptions`: [ApplicationLoadBalancedTaskImageProps](/cdk/api/v2/docs/aws-cdk-lib.aws_ecs_patterns.ApplicationLoadBalancedTaskImageProps.html) = none — The properties required to create a new task definition.

  Only one of TaskDefinition or TaskImageOptions must be specified.

- `vpc`: [IVpc](/cdk/api/v2/docs/aws-cdk-lib.aws_ec2.IVpc.html) — The VPC where the container instances will be launched or the elastic network interfaces (ENIs) will be deployed.

  **Default:** uses the VPC defined in the cluster or creates a new VPC.

  If a vpc is specified, the cluster construct should be omitted. Alternatively, you can omit both vpc and cluster.