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AWS Fundamentals
L2 Construct

ApplicationLoadBalancedFargateService

A Fargate service running on an ECS cluster fronted by an application load balancer.

Import

import { ApplicationLoadBalancedFargateService } from 'aws-cdk-lib/aws-ecs-patterns';

Or use the module namespace:

import * as ecs_patterns from 'aws-cdk-lib/aws-ecs-patterns';
// ecs_patterns.ApplicationLoadBalancedFargateService

Properties

Configuration passed to the constructor as ApplicationLoadBalancedFargateServiceProps.

assignPublicIpOptional
boolean

Determines whether the service will be assigned a public IP address.

Default: false

containerCpuOptional
number

The minimum number of CPU units to reserve for the container.

Default: - No minimum CPU units reserved.

containerMemoryLimitMiBOptional
number

The amount (in MiB) of memory to present to the container. If your container attempts to exceed the allocated memory, the container is terminated.

Default: - No memory limit.

healthCheckOptional
HealthCheck

The health check command and associated configuration parameters for the container.

Default: - Health check configuration from container.

securityGroupsOptional
ISecurityGroup[]

The security groups to associate with the service. If you do not specify a security group, a new security group is created.

Default: - A new security group is created.

taskSubnetsOptional
SubnetSelection

The subnets to associate with the service.

Default: - Public subnets if `assignPublicIp` is set, otherwise the first available one of Private, Isolated, Public, in that order.

31 properties inherited from ApplicationLoadBalancedServiceBaseProps
capacityProviderStrategiesOptionalinherited from ApplicationLoadBalancedServiceBaseProps
CapacityProviderStrategy[]

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

Default: - undefined

certificateOptionalinherited from ApplicationLoadBalancedServiceBaseProps
ICertificate

Certificate Manager certificate to associate with the load balancer. Setting this option will set the load balancer protocol to HTTPS.

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.

circuitBreakerOptionalinherited from ApplicationLoadBalancedServiceBaseProps
DeploymentCircuitBreaker

Whether to enable the deployment circuit breaker. If this property is defined, circuit breaker will be implicitly enabled.

Default: - disabled

cloudMapOptionsOptionalinherited from ApplicationLoadBalancedServiceBaseProps
CloudMapOptions

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

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

clusterOptionalinherited from ApplicationLoadBalancedServiceBaseProps
ICluster

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.

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

deploymentControllerOptionalinherited from ApplicationLoadBalancedServiceBaseProps
DeploymentController

Specifies which deployment controller to use for the service. For more information, see [Amazon ECS Deployment Types](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/deployment-types.html)

Default: - Rolling update (ECS)

desiredCountOptionalinherited from ApplicationLoadBalancedServiceBaseProps
number

The desired number of instantiations of the task definition to keep running on the service. The minimum value is 1

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

domainNameOptionalinherited from ApplicationLoadBalancedServiceBaseProps
string

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

Default: - No domain name.

domainZoneOptionalinherited from ApplicationLoadBalancedServiceBaseProps
IHostedZone

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

Default: - No Route53 hosted domain zone.

enableECSManagedTagsOptionalinherited from ApplicationLoadBalancedServiceBaseProps
boolean

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)

Default: false

enableExecuteCommandOptionalinherited from ApplicationLoadBalancedServiceBaseProps
boolean

Whether ECS Exec should be enabled.

Default: - false

healthCheckGracePeriodOptionalinherited from ApplicationLoadBalancedServiceBaseProps
Duration

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

idleTimeoutOptionalinherited from ApplicationLoadBalancedServiceBaseProps
Duration

The load balancer idle timeout, in seconds. Can be between 1 and 4000 seconds

Default: - CloudFormation sets idle timeout to 60 seconds

ipAddressTypeOptionalinherited from ApplicationLoadBalancedServiceBaseProps
IpAddressType

The type of IP address to use.

Default: - IpAddressType.IPV4

listenerPortOptionalinherited from ApplicationLoadBalancedServiceBaseProps
number

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

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.

loadBalancerOptionalinherited from ApplicationLoadBalancedServiceBaseProps
IApplicationLoadBalancer

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]

Default: - a new load balancer will be created.

loadBalancerNameOptionalinherited from ApplicationLoadBalancedServiceBaseProps
string

Name of the load balancer.

Default: - Automatically generated name.

maxHealthyPercentOptionalinherited from ApplicationLoadBalancedServiceBaseProps
number

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.

Default: - 100 if daemon, otherwise 200

minHealthyPercentOptionalinherited from ApplicationLoadBalancedServiceBaseProps
number

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.

Default: - 0 if daemon, otherwise 50

openListenerOptionalinherited from ApplicationLoadBalancedServiceBaseProps
boolean

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

Default: true -- The security group allows ingress from all IP addresses.

propagateTagsOptionalinherited from ApplicationLoadBalancedServiceBaseProps
PropagatedTagSource

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.

Default: - none

protocolOptionalinherited from ApplicationLoadBalancedServiceBaseProps
ApplicationProtocol

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.

Default: HTTP. If a certificate is specified, the protocol will be set by default to HTTPS.

protocolVersionOptionalinherited from ApplicationLoadBalancedServiceBaseProps
ApplicationProtocolVersion

The protocol version to use.

Default: ApplicationProtocolVersion.HTTP1

publicLoadBalancerOptionalinherited from ApplicationLoadBalancedServiceBaseProps
boolean

Determines whether the Load Balancer will be internet-facing.

Default: true

recordTypeOptionalinherited from ApplicationLoadBalancedServiceBaseProps
ApplicationLoadBalancedServiceRecordType

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.

Default: ApplicationLoadBalancedServiceRecordType.ALIAS

redirectHTTPOptionalinherited from ApplicationLoadBalancedServiceBaseProps
boolean

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

Default: false

serviceNameOptionalinherited from ApplicationLoadBalancedServiceBaseProps
string

The name of the service.

Default: - CloudFormation-generated name.

sslPolicyOptionalinherited from ApplicationLoadBalancedServiceBaseProps
SslPolicy

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

Default: - The recommended elastic load balancing security policy

targetProtocolOptionalinherited from ApplicationLoadBalancedServiceBaseProps
ApplicationProtocol

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).

Default: HTTP.

taskImageOptionsOptionalinherited from ApplicationLoadBalancedServiceBaseProps
ApplicationLoadBalancedTaskImageOptions

The properties required to create a new task definition. TaskDefinition or TaskImageOptions must be specified, but not both.

Default: none

vpcOptionalinherited from ApplicationLoadBalancedServiceBaseProps
IVpc

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.

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

6 properties inherited from FargateServiceBaseProps
cpuOptionalinherited from FargateServiceBaseProps
number

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 8192 (8 vCPU) - Available memory values: Between 16GB and 60GB in 4GB increments 16384 (16 vCPU) - Available memory values: Between 32GB and 120GB in 8GB increments This default is set in the underlying FargateTaskDefinition construct.

Default: 256

ephemeralStorageGiBOptionalinherited from FargateServiceBaseProps
number

The amount (in GiB) of ephemeral storage to be allocated to the task. The minimum supported value is `21` GiB and the maximum supported value is `200` GiB. Only supported in Fargate platform version 1.4.0 or later.

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

memoryLimitMiBOptionalinherited from FargateServiceBaseProps
number

The amount (in MiB) of memory used by the task. 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) This default is set in the underlying FargateTaskDefinition construct.

Default: 512

platformVersionOptionalinherited from FargateServiceBaseProps
FargatePlatformVersion

The platform version on which to run your service. If one is not specified, the LATEST platform version is used by default. For more information, see [AWS Fargate Platform Versions](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/platform_versions.html) in the Amazon Elastic Container Service Developer Guide.

Default: Latest

runtimePlatformOptionalinherited from FargateServiceBaseProps
RuntimePlatform

The runtime platform of the task definition.

Default: - If the property is undefined, `operatingSystemFamily` is LINUX and `cpuArchitecture` is X86_64

taskDefinitionOptionalinherited from FargateServiceBaseProps
FargateTaskDefinition

The task definition to use for tasks in the service. TaskDefinition or TaskImageOptions must be specified, but not both. [disable-awslint:ref-via-interface]

Default: - none

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