aws-cdk-lib.aws_ecs_patterns.ApplicationLoadBalancedEc2Service

class ApplicationLoadBalancedEc2Service (construct)

LanguageType name
.NETAmazon.CDK.AWS.ECS.Patterns.ApplicationLoadBalancedEc2Service
Gogithub.com/aws/aws-cdk-go/awscdk/v2/awsecspatterns#ApplicationLoadBalancedEc2Service
Javasoftware.amazon.awscdk.services.ecs.patterns.ApplicationLoadBalancedEc2Service
Pythonaws_cdk.aws_ecs_patterns.ApplicationLoadBalancedEc2Service
TypeScript (source)aws-cdk-lib » aws_ecs_patterns » ApplicationLoadBalancedEc2Service

Implements IConstruct, IDependable

An EC2 service running on an ECS cluster fronted by an application load balancer.

Example

declare const cluster: ecs.Cluster;
const loadBalancedEcsService = new ecsPatterns.ApplicationLoadBalancedEc2Service(this, 'Service', {
  cluster,
  memoryLimitMiB: 1024,
  taskImageOptions: {
    image: ecs.ContainerImage.fromRegistry('test'),
    environment: {
      TEST_ENVIRONMENT_VARIABLE1: "test environment variable 1 value",
      TEST_ENVIRONMENT_VARIABLE2: "test environment variable 2 value",
    },
    command: ['command'],
    entryPoint: ['entry', 'point'],
  },
  desiredCount: 2,
});

Initializer

new ApplicationLoadBalancedEc2Service(scope: Construct, id: string, props?: ApplicationLoadBalancedEc2ServiceProps)

Parameters

  • scope Construct
  • id string
  • props ApplicationLoadBalancedEc2ServiceProps

Constructs a new instance of the ApplicationLoadBalancedEc2Service class.

Construct Props

NameTypeDescription
capacityProviderStrategies?CapacityProviderStrategy[]A list of Capacity Provider strategies used to place a service.
certificate?ICertificateCertificate Manager certificate to associate with the load balancer.
circuitBreaker?DeploymentCircuitBreakerWhether to enable the deployment circuit breaker.
cloudMapOptions?CloudMapOptionsThe options for configuring an Amazon ECS service to use service discovery.
cluster?IClusterThe name of the cluster that hosts the service.
cpu?numberThe number of cpu units used by the task.
deploymentController?DeploymentControllerSpecifies which deployment controller to use for the service.
desiredCount?numberThe desired number of instantiations of the task definition to keep running on the service.
domainName?stringThe domain name for the service, e.g. "api.example.com.".
domainZone?IHostedZoneThe Route53 hosted zone for the domain, e.g. "example.com.".
enableECSManagedTags?booleanSpecifies whether to enable Amazon ECS managed tags for the tasks within the service.
enableExecuteCommand?booleanWhether ECS Exec should be enabled.
healthCheckGracePeriod?DurationThe 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.
idleTimeout?DurationThe load balancer idle timeout, in seconds.
listenerPort?numberListener port of the application load balancer that will serve traffic to the service.
loadBalancer?IApplicationLoadBalancerThe application load balancer that will serve traffic to the service.
loadBalancerName?stringName of the load balancer.
maxHealthyPercent?numberThe maximum number of tasks, specified as a percentage of the Amazon ECS service's DesiredCount value, that can run in a service during a deployment.
memoryLimitMiB?numberThe hard limit (in MiB) of memory to present to the container.
memoryReservationMiB?numberThe soft limit (in MiB) of memory to reserve for the container.
minHealthyPercent?numberThe minimum number of tasks, specified as a percentage of the Amazon ECS service's DesiredCount value, that must continue to run and remain healthy during a deployment.
openListener?booleanDetermines whether or not the Security Group for the Load Balancer's Listener will be open to all traffic by default.
placementConstraints?PlacementConstraint[]The placement constraints to use for tasks in the service.
placementStrategies?PlacementStrategy[]The placement strategies to use for tasks in the service.
propagateTags?PropagatedTagSourceSpecifies whether to propagate the tags from the task definition or the service to the tasks in the service.
protocol?ApplicationProtocolThe protocol for connections from clients to the load balancer.
protocolVersion?ApplicationProtocolVersionThe protocol version to use.
publicLoadBalancer?booleanDetermines whether the Load Balancer will be internet-facing.
recordType?ApplicationLoadBalancedServiceRecordTypeSpecifies whether the Route53 record should be a CNAME, an A record using the Alias feature or no record at all.
redirectHTTP?booleanSpecifies whether the load balancer should redirect traffic on port 80 to port 443 to support HTTP->HTTPS redirects This is only valid if the protocol of the ALB is HTTPS.
serviceName?stringThe name of the service.
sslPolicy?SslPolicyThe security policy that defines which ciphers and protocols are supported by the ALB Listener.
targetProtocol?ApplicationProtocolThe protocol for connections from the load balancer to the ECS tasks.
taskDefinition?Ec2TaskDefinitionThe task definition to use for tasks in the service. TaskDefinition or TaskImageOptions must be specified, but not both..
taskImageOptions?ApplicationLoadBalancedTaskImageOptionsThe properties required to create a new task definition.
vpc?IVpcThe VPC where the container instances will be launched or the elastic network interfaces (ENIs) will be deployed.

capacityProviderStrategies?

Type: CapacityProviderStrategy[] (optional, default: undefined)

A list of Capacity Provider strategies used to place a service.


certificate?

Type: ICertificate (optional, default: No certificate associated with the load balancer, if using the HTTP protocol. For HTTPS, a DNS-validated certificate will be created for the load balancer's specified domain name if a domain name and domain zone are specified.)

Certificate Manager certificate to associate with the load balancer.

Setting this option will set the load balancer protocol to HTTPS.


circuitBreaker?

Type: DeploymentCircuitBreaker (optional, default: disabled)

Whether to enable the deployment circuit breaker.

If this property is defined, circuit breaker will be implicitly enabled.


cloudMapOptions?

Type: CloudMapOptions (optional, default: AWS Cloud Map service discovery is not enabled.)

The options for configuring an Amazon ECS service to use service discovery.


cluster?

Type: ICluster (optional, default: create a new cluster; if both cluster and vpc are omitted, a new VPC will be created for you.)

The name of the cluster that hosts the service.

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


cpu?

Type: number (optional, default: none)

The number of cpu units used by the task.

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

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

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

1024 (1 vCPU) - Available memory values: 2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB

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

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

This default is set in the underlying FargateTaskDefinition construct.


deploymentController?

Type: DeploymentController (optional, default: Rolling update (ECS))

Specifies which deployment controller to use for the service.

For more information, see Amazon ECS Deployment Types


desiredCount?

Type: number (optional, default: If the feature flag, ECS_REMOVE_DEFAULT_DESIRED_COUNT is false, the default is 1; if true, the default is 1 for all new services and uses the existing services desired count when updating an existing service.)

The desired number of instantiations of the task definition to keep running on the service.

The minimum value is 1


domainName?

Type: string (optional, default: No domain name.)

The domain name for the service, e.g. "api.example.com.".


domainZone?

Type: IHostedZone (optional, default: No Route53 hosted domain zone.)

The Route53 hosted zone for the domain, e.g. "example.com.".


enableECSManagedTags?

Type: boolean (optional, default: false)

Specifies whether to enable Amazon ECS managed tags for the tasks within the service.

For more information, see Tagging Your Amazon ECS Resources


enableExecuteCommand?

Type: boolean (optional, default: false)

Whether ECS Exec should be enabled.


healthCheckGracePeriod?

Type: Duration (optional, default: defaults to 60 seconds if at least one load balancer is in-use and it is not already set)

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.


idleTimeout?

Type: Duration (optional, default: CloudFormation sets idle timeout to 60 seconds)

The load balancer idle timeout, in seconds.

Can be between 1 and 4000 seconds


listenerPort?

Type: number (optional, default: The default listener port is determined from the protocol (port 80 for HTTP, port 443 for HTTPS). A domain name and zone must be also be specified if using HTTPS.)

Listener port of the application load balancer that will serve traffic to the service.


loadBalancer?

Type: IApplicationLoadBalancer (optional, default: a new load balancer will be created.)

The application load balancer that will serve traffic to the service.

The VPC attribute of a load balancer must be specified for it to be used to create a new service with this pattern.

[disable-awslint:ref-via-interface]


loadBalancerName?

Type: string (optional, default: Automatically generated name.)

Name of the load balancer.


maxHealthyPercent?

Type: number (optional, default: 100 if daemon, otherwise 200)

The maximum number of tasks, specified as a percentage of the Amazon ECS service's DesiredCount value, that can run in a service during a deployment.


memoryLimitMiB?

Type: number (optional, default: No memory limit.)

The hard limit (in MiB) of memory to present to the container.

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

At least one of memoryLimitMiB and memoryReservationMiB is required.


memoryReservationMiB?

Type: number (optional, default: No memory reserved.)

The soft limit (in MiB) of memory to reserve for the container.

When system memory is under contention, Docker attempts to keep the container memory within the limit. If the container requires more memory, it can consume up to the value specified by the Memory property or all of the available memory on the container instance—whichever comes first.

At least one of memoryLimitMiB and memoryReservationMiB is required.


minHealthyPercent?

Type: number (optional, default: 0 if daemon, otherwise 50)

The minimum number of tasks, specified as a percentage of the Amazon ECS service's DesiredCount value, that must continue to run and remain healthy during a deployment.


openListener?

Type: boolean (optional, default: true -- The security group allows ingress from all IP addresses.)

Determines whether or not the Security Group for the Load Balancer's Listener will be open to all traffic by default.


placementConstraints?

Type: PlacementConstraint[] (optional, default: No constraints.)

The placement constraints to use for tasks in the service.

For more information, see Amazon ECS Task Placement Constraints.


placementStrategies?

Type: PlacementStrategy[] (optional, default: No strategies.)

The placement strategies to use for tasks in the service.

For more information, see Amazon ECS Task Placement Strategies.


propagateTags?

Type: PropagatedTagSource (optional, default: 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.


protocol?

Type: ApplicationProtocol (optional, default: HTTP. If a certificate is specified, the protocol will be set by default to HTTPS.)

The protocol for connections from clients to the load balancer.

The load balancer port is determined from the protocol (port 80 for HTTP, port 443 for HTTPS). If HTTPS, either a certificate or domain name and domain zone must also be specified.


protocolVersion?

Type: ApplicationProtocolVersion (optional, default: ApplicationProtocolVersion.HTTP1)

The protocol version to use.


publicLoadBalancer?

Type: boolean (optional, default: true)

Determines whether the Load Balancer will be internet-facing.


recordType?

Type: ApplicationLoadBalancedServiceRecordType (optional, default: ApplicationLoadBalancedServiceRecordType.ALIAS)

Specifies whether the Route53 record should be a CNAME, an A record using the Alias feature or no record at all.

This is useful if you need to work with DNS systems that do not support alias records.


redirectHTTP?

Type: boolean (optional, default: false)

Specifies whether the load balancer should redirect traffic on port 80 to port 443 to support HTTP->HTTPS redirects This is only valid if the protocol of the ALB is HTTPS.


serviceName?

Type: string (optional, default: CloudFormation-generated name.)

The name of the service.


sslPolicy?

Type: SslPolicy (optional, default: The recommended elastic load balancing security policy)

The security policy that defines which ciphers and protocols are supported by the ALB Listener.


targetProtocol?

Type: ApplicationProtocol (optional, default: HTTP.)

The protocol for connections from the load balancer to the ECS tasks.

The default target port is determined from the protocol (port 80 for HTTP, port 443 for HTTPS).


taskDefinition?

Type: Ec2TaskDefinition (optional, default: none)

The task definition to use for tasks in the service. TaskDefinition or TaskImageOptions must be specified, but not both..

[disable-awslint:ref-via-interface]


taskImageOptions?

Type: ApplicationLoadBalancedTaskImageOptions (optional, default: none)

The properties required to create a new task definition.

TaskDefinition or TaskImageOptions must be specified, but not both.


vpc?

Type: IVpc (optional, default: uses the VPC defined in the cluster or creates a new VPC.)

The VPC where the container instances will be launched or the elastic network interfaces (ENIs) will be deployed.

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

Properties

NameTypeDescription
clusterIClusterThe cluster that hosts the service.
listenerApplicationListenerThe listener for the service.
loadBalancerApplicationLoadBalancerThe Application Load Balancer for the service.
nodeNodeThe tree node.
serviceEc2ServiceThe EC2 service in this construct.
targetGroupApplicationTargetGroupThe target group for the service.
taskDefinitionEc2TaskDefinitionThe EC2 Task Definition in this construct.
certificate?ICertificateCertificate Manager certificate to associate with the load balancer.
internalDesiredCount?numberThe desired number of instantiations of the task definition to keep running on the service.
redirectListener?ApplicationListenerThe redirect listener for the service if redirectHTTP is enabled.

cluster

Type: ICluster

The cluster that hosts the service.


listener

Type: ApplicationListener

The listener for the service.


loadBalancer

Type: ApplicationLoadBalancer

The Application Load Balancer for the service.


node

Type: Node

The tree node.


service

Type: Ec2Service

The EC2 service in this construct.


targetGroup

Type: ApplicationTargetGroup

The target group for the service.


taskDefinition

Type: Ec2TaskDefinition

The EC2 Task Definition in this construct.


certificate?

Type: ICertificate (optional)

Certificate Manager certificate to associate with the load balancer.


internalDesiredCount?

Type: number (optional)

The desired number of instantiations of the task definition to keep running on the service.

The default is 1 for all new services and uses the existing services desired count when updating an existing service if one is not provided.


redirectListener?

Type: ApplicationListener (optional)

The redirect listener for the service if redirectHTTP is enabled.

Methods

NameDescription
toString()Returns a string representation of this construct.

toString()

public toString(): string

Returns

  • string

Returns a string representation of this construct.