Ec2Service

class aws_cdk.aws_ecs.Ec2Service(scope, id, *, task_definition, assign_public_ip=None, daemon=None, placement_constraints=None, placement_strategies=None, propagate_task_tags_from=None, security_group=None, security_groups=None, vpc_subnets=None, cluster, capacity_provider_strategies=None, circuit_breaker=None, cloud_map_options=None, deployment_controller=None, desired_count=None, enable_ecs_managed_tags=None, health_check_grace_period=None, max_healthy_percent=None, min_healthy_percent=None, propagate_tags=None, service_name=None)

Bases: aws_cdk.aws_ecs.BaseService

This creates a service using the EC2 launch type on an ECS cluster.

Resource

AWS::ECS::Service

Constructs a new instance of the Ec2Service class.

Parameters

  • scope (Construct) –

  • id (str) –

  • task_definition (TaskDefinition) – The task definition to use for tasks in the service. [disable-awslint:ref-via-interface]

  • assign_public_ip (Optional[bool]) – Specifies whether the task’s elastic network interface receives a public IP address. If true, each task will receive a public IP address. This property is only used for tasks that use the awsvpc network mode. Default: false

  • daemon (Optional[bool]) – Specifies whether the service will use the daemon scheduling strategy. If true, the service scheduler deploys exactly one task on each container instance in your cluster. When you are using this strategy, do not specify a desired number of tasks orany task placement strategies. Default: false

  • placement_constraints (Optional[Sequence[PlacementConstraint]]) – The placement constraints to use for tasks in the service. For more information, see Amazon ECS Task Placement Constraints. Default: - No constraints.

  • placement_strategies (Optional[Sequence[PlacementStrategy]]) – The placement strategies to use for tasks in the service. For more information, see Amazon ECS Task Placement Strategies. Default: - No strategies.

  • propagate_task_tags_from (Optional[PropagatedTagSource]) – (deprecated) 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: PropagatedTagSource.NONE

  • security_group (Optional[ISecurityGroup]) – (deprecated) The security groups to associate with the service. If you do not specify a security group, the default security group for the VPC is used. This property is only used for tasks that use the awsvpc network mode. Default: - A new security group is created.

  • security_groups (Optional[Sequence[ISecurityGroup]]) – The security groups to associate with the service. If you do not specify a security group, the default security group for the VPC is used. This property is only used for tasks that use the awsvpc network mode. Default: - A new security group is created.

  • vpc_subnets (Optional[SubnetSelection]) – The subnets to associate with the service. This property is only used for tasks that use the awsvpc network mode. Default: - Public subnets if assignPublicIp is set, otherwise the first available one of Private, Isolated, Public, in that order.

  • cluster (ICluster) – The name of the cluster that hosts the service.

  • capacity_provider_strategies (Optional[Sequence[CapacityProviderStrategy]]) – A list of Capacity Provider strategies used to place a service. Default: - undefined

  • circuit_breaker (Optional[DeploymentCircuitBreaker]) – Whether to enable the deployment circuit breaker. If this property is defined, circuit breaker will be implicitly enabled. Default: - disabled

  • cloud_map_options (Optional[CloudMapOptions]) – The options for configuring an Amazon ECS service to use service discovery. Default: - AWS Cloud Map service discovery is not enabled.

  • deployment_controller (Optional[DeploymentController]) – Specifies which deployment controller to use for the service. For more information, see Amazon ECS Deployment Types Default: - Rolling update (ECS)

  • desired_count (Union[int, float, None]) – The desired number of instantiations of the task definition to keep running on the service. Default: - When creating the service, default is 1; when updating the service, default uses the current task number.

  • enable_ecs_managed_tags (Optional[bool]) – Specifies whether to enable Amazon ECS managed tags for the tasks within the service. For more information, see Tagging Your Amazon ECS Resources Default: false

  • health_check_grace_period (Optional[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

  • max_healthy_percent (Union[int, float, None]) – 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

  • min_healthy_percent (Union[int, float, None]) – 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

  • propagate_tags (Optional[PropagatedTagSource]) – Specifies whether to propagate the tags from the task definition or the service to the tasks in the service. Valid values are: PropagatedTagSource.SERVICE, PropagatedTagSource.TASK_DEFINITION or PropagatedTagSource.NONE Default: PropagatedTagSource.NONE

  • service_name (Optional[str]) – The name of the service. Default: - CloudFormation-generated name.

Methods

add_placement_constraints(*constraints)

Adds one or more placement constraints to use for tasks in the service.

For more information, see Amazon ECS Task Placement Constraints.

Parameters

constraints (PlacementConstraint) –

Return type

None

add_placement_strategies(*strategies)

Adds one or more placement strategies to use for tasks in the service.

For more information, see Amazon ECS Task Placement Strategies.

Parameters

strategies (PlacementStrategy) –

Return type

None

apply_removal_policy(policy)

Apply the given removal policy to this resource.

The Removal Policy controls what happens to this resource when it stops being managed by CloudFormation, either because you’ve removed it from the CDK application or because you’ve made a change that requires the resource to be replaced.

The resource can be deleted (RemovalPolicy.DELETE), or left in your AWS account for data recovery and cleanup later (RemovalPolicy.RETAIN).

Parameters

policy (RemovalPolicy) –

Return type

None

associate_cloud_map_service(*, service, container=None, container_port=None)

Associates this service with a CloudMap service.

Parameters

  • service (IService) – The cloudmap service to register with.

  • container (Optional[ContainerDefinition]) – The container to point to for a SRV record. Default: - the task definition’s default container

  • container_port (Union[int, float, None]) – The port to point to for a SRV record. Default: - the default port of the task definition’s default container

Return type

None

attach_to_application_target_group(target_group)

This method is called to attach this service to an Application Load Balancer.

Don’t call this function directly. Instead, call listener.addTargets() to add this service to a load balancer.

Parameters

target_group (IApplicationTargetGroup) –

Return type

LoadBalancerTargetProps

attach_to_classic_lb(load_balancer)

Registers the service as a target of a Classic Load Balancer (CLB).

Don’t call this. Call loadBalancer.addTarget() instead.

Parameters

load_balancer (LoadBalancer) –

Return type

None

attach_to_network_target_group(target_group)

This method is called to attach this service to a Network Load Balancer.

Don’t call this function directly. Instead, call listener.addTargets() to add this service to a load balancer.

Parameters

target_group (INetworkTargetGroup) –

Return type

LoadBalancerTargetProps

auto_scale_task_count(*, max_capacity, min_capacity=None)

An attribute representing the minimum and maximum task count for an AutoScalingGroup.

Parameters

  • max_capacity (Union[int, float]) – Maximum capacity to scale to.

  • min_capacity (Union[int, float, None]) – Minimum capacity to scale to. Default: 1

Return type

ScalableTaskCount

enable_cloud_map(*, cloud_map_namespace=None, container=None, container_port=None, dns_record_type=None, dns_ttl=None, failure_threshold=None, name=None)

Enable CloudMap service discovery for the service.

Parameters

  • cloud_map_namespace (Optional[INamespace]) – The service discovery namespace for the Cloud Map service to attach to the ECS service. Default: - the defaultCloudMapNamespace associated to the cluster

  • container (Optional[ContainerDefinition]) – The container to point to for a SRV record. Default: - the task definition’s default container

  • container_port (Union[int, float, None]) – The port to point to for a SRV record. Default: - the default port of the task definition’s default container

  • dns_record_type (Optional[DnsRecordType]) – The DNS record type that you want AWS Cloud Map to create. The supported record types are A or SRV. Default: - DnsRecordType.A if TaskDefinition.networkMode = AWS_VPC, otherwise DnsRecordType.SRV

  • dns_ttl (Optional[Duration]) – The amount of time that you want DNS resolvers to cache the settings for this record. Default: 60

  • failure_threshold (Union[int, float, None]) – The number of 30-second intervals that you want Cloud Map to wait after receiving an UpdateInstanceCustomHealthStatus request before it changes the health status of a service instance. NOTE: This is used for HealthCheckCustomConfig

  • name (Optional[str]) – The name of the Cloud Map service to attach to the ECS service. Default: CloudFormation-generated name

Return type

Service

Returns

The created CloudMap service

load_balancer_target(*, container_name, container_port=None, protocol=None)

Return a load balancing target for a specific container and port.

Use this function to create a load balancer target if you want to load balance to another container than the first essential container or the first mapped port on the container.

Use the return value of this function where you would normally use a load balancer target, instead of the Service object itself.

Parameters

  • container_name (str) – The name of the container.

  • container_port (Union[int, float, None]) – The port number of the container. Only applicable when using application/network load balancers. Default: - Container port of the first added port mapping.

  • protocol (Optional[Protocol]) – The protocol used for the port mapping. Only applicable when using application load balancers. Default: Protocol.TCP

Example:

# Example automatically generated without compilation. See https://github.com/aws/jsii/issues/826
listener.add_targets("ECS",
    port=80,
    targets=[service.load_balancer_target(
        container_name="MyContainer",
        container_port=1234
    )]
)
Return type

IEcsLoadBalancerTarget

metric(metric_name, *, account=None, color=None, dimensions=None, label=None, period=None, region=None, statistic=None, unit=None)

This method returns the specified CloudWatch metric name for this service.

Parameters

  • metric_name (str) –

  • account (Optional[str]) – Account which this metric comes from. Default: - Deployment account.

  • color (Optional[str]) – The hex color code, prefixed with ‘#’ (e.g. ‘#00ff00’), to use when this metric is rendered on a graph. The Color class has a set of standard colors that can be used here. Default: - Automatic color

  • dimensions (Optional[Mapping[str, Any]]) – Dimensions of the metric. Default: - No dimensions.

  • label (Optional[str]) – Label for this metric when added to a Graph in a Dashboard. Default: - No label

  • period (Optional[Duration]) – The period over which the specified statistic is applied. Default: Duration.minutes(5)

  • region (Optional[str]) – Region which this metric comes from. Default: - Deployment region.

  • statistic (Optional[str]) – What function to use for aggregating. Can be one of the following: - “Minimum” | “min” - “Maximum” | “max” - “Average” | “avg” - “Sum” | “sum” - “SampleCount | “n” - “pNN.NN” Default: Average

  • unit (Optional[Unit]) – Unit used to filter the metric stream. Only refer to datums emitted to the metric stream with the given unit and ignore all others. Only useful when datums are being emitted to the same metric stream under different units. The default is to use all matric datums in the stream, regardless of unit, which is recommended in nearly all cases. CloudWatch does not honor this property for graphs. Default: - All metric datums in the given metric stream

Return type

Metric

metric_cpu_utilization(*, account=None, color=None, dimensions=None, label=None, period=None, region=None, statistic=None, unit=None)

This method returns the CloudWatch metric for this service’s CPU utilization.

Parameters

  • account (Optional[str]) – Account which this metric comes from. Default: - Deployment account.

  • color (Optional[str]) – The hex color code, prefixed with ‘#’ (e.g. ‘#00ff00’), to use when this metric is rendered on a graph. The Color class has a set of standard colors that can be used here. Default: - Automatic color

  • dimensions (Optional[Mapping[str, Any]]) – Dimensions of the metric. Default: - No dimensions.

  • label (Optional[str]) – Label for this metric when added to a Graph in a Dashboard. Default: - No label

  • period (Optional[Duration]) – The period over which the specified statistic is applied. Default: Duration.minutes(5)

  • region (Optional[str]) – Region which this metric comes from. Default: - Deployment region.

  • statistic (Optional[str]) – What function to use for aggregating. Can be one of the following: - “Minimum” | “min” - “Maximum” | “max” - “Average” | “avg” - “Sum” | “sum” - “SampleCount | “n” - “pNN.NN” Default: Average

  • unit (Optional[Unit]) – Unit used to filter the metric stream. Only refer to datums emitted to the metric stream with the given unit and ignore all others. Only useful when datums are being emitted to the same metric stream under different units. The default is to use all matric datums in the stream, regardless of unit, which is recommended in nearly all cases. CloudWatch does not honor this property for graphs. Default: - All metric datums in the given metric stream

Default

average over 5 minutes

Return type

Metric

metric_memory_utilization(*, account=None, color=None, dimensions=None, label=None, period=None, region=None, statistic=None, unit=None)

This method returns the CloudWatch metric for this service’s memory utilization.

Parameters

  • account (Optional[str]) – Account which this metric comes from. Default: - Deployment account.

  • color (Optional[str]) – The hex color code, prefixed with ‘#’ (e.g. ‘#00ff00’), to use when this metric is rendered on a graph. The Color class has a set of standard colors that can be used here. Default: - Automatic color

  • dimensions (Optional[Mapping[str, Any]]) – Dimensions of the metric. Default: - No dimensions.

  • label (Optional[str]) – Label for this metric when added to a Graph in a Dashboard. Default: - No label

  • period (Optional[Duration]) – The period over which the specified statistic is applied. Default: Duration.minutes(5)

  • region (Optional[str]) – Region which this metric comes from. Default: - Deployment region.

  • statistic (Optional[str]) – What function to use for aggregating. Can be one of the following: - “Minimum” | “min” - “Maximum” | “max” - “Average” | “avg” - “Sum” | “sum” - “SampleCount | “n” - “pNN.NN” Default: Average

  • unit (Optional[Unit]) – Unit used to filter the metric stream. Only refer to datums emitted to the metric stream with the given unit and ignore all others. Only useful when datums are being emitted to the same metric stream under different units. The default is to use all matric datums in the stream, regardless of unit, which is recommended in nearly all cases. CloudWatch does not honor this property for graphs. Default: - All metric datums in the given metric stream

Default

average over 5 minutes

Return type

Metric

register_load_balancer_targets(*targets)

Use this function to create all load balancer targets to be registered in this service, add them to target groups, and attach target groups to listeners accordingly.

Alternatively, you can use listener.addTargets() to create targets and add them to target groups.

Parameters

targets (EcsTarget) –

Example:

# Example automatically generated without compilation. See https://github.com/aws/jsii/issues/826
service.register_load_balancer_targets(
    container_name="web",
    container_port=80,
    new_target_group_id="ECS",
    listener=ecs.ListenerConfig.application_listener(listener,
        protocol=elbv2.ApplicationProtocol.HTTPS
    )
)
Return type

None

to_string()

Returns a string representation of this construct.

Return type

str

Attributes

cloud_map_service

The CloudMap service created for this service, if any.

Return type

Optional[IService]

cluster

The cluster that hosts the service.

Return type

ICluster

connections

The security groups which manage the allowed network traffic for the service.

Return type

Connections

env

The environment this resource belongs to.

For resources that are created and managed by the CDK (generally, those created by creating new class instances like Role, Bucket, etc.), this is always the same as the environment of the stack they belong to; however, for imported resources (those obtained from static methods like fromRoleArn, fromBucketName, etc.), that might be different than the stack they were imported into.

Return type

ResourceEnvironment

node

The construct tree node associated with this construct.

Return type

ConstructNode

service_arn

The Amazon Resource Name (ARN) of the service.

Return type

str

service_name

The name of the service.

Attribute

true

Return type

str

stack

The stack in which this resource is defined.

Return type

Stack

task_definition

The task definition to use for tasks in the service.

Return type

TaskDefinition

Static Methods

classmethod from_ec2_service_arn(scope, id, ec2_service_arn)

Imports from the specified service ARN.

Parameters

  • scope (Construct) –

  • id (str) –

  • ec2_service_arn (str) –

Return type

IEc2Service

classmethod from_ec2_service_attributes(scope, id, *, cluster, service_arn=None, service_name=None)

Imports from the specified service attrributes.

Parameters

  • scope (Construct) –

  • id (str) –

  • cluster (ICluster) – The cluster that hosts the service.

  • service_arn (Optional[str]) – The service ARN. Default: - either this, or {@link serviceName}, is required

  • service_name (Optional[str]) – The name of the service. Default: - either this, or {@link serviceArn}, is required

Return type

IBaseService

classmethod is_construct(x)

Return whether the given object is a Construct.

Parameters

x (Any) –

Return type

bool

classmethod is_resource(construct)

Check whether the given construct is a Resource.

Parameters

construct (IConstruct) –

Return type

bool