ECS / Client / create_service

create_service#

ECS.Client.create_service(**kwargs)#

Runs and maintains your desired number of tasks from a specified task definition. If the number of tasks running in a service drops below the desiredCount, Amazon ECS runs another copy of the task in the specified cluster. To update an existing service, see the UpdateService action.

Note

Starting April 15, 2023, Amazon Web Services will not onboard new customers to Amazon Elastic Inference (EI), and will help current customers migrate their workloads to options that offer better price and performance. After April 15, 2023, new customers will not be able to launch instances with Amazon EI accelerators in Amazon SageMaker, Amazon ECS, or Amazon EC2. However, customers who have used Amazon EI at least once during the past 30-day period are considered current customers and will be able to continue using the service.

In addition to maintaining the desired count of tasks in your service, you can optionally run your service behind one or more load balancers. The load balancers distribute traffic across the tasks that are associated with the service. For more information, see Service load balancing in the Amazon Elastic Container Service Developer Guide.

Tasks for services that don’t use a load balancer are considered healthy if they’re in the RUNNING state. Tasks for services that use a load balancer are considered healthy if they’re in the RUNNING state and are reported as healthy by the load balancer.

There are two service scheduler strategies available:

REPLICA - The replica scheduling strategy places and maintains your desired number of tasks across your cluster. By default, the service scheduler spreads tasks across Availability Zones. You can use task placement strategies and constraints to customize task placement decisions. For more information, see Service scheduler concepts in the Amazon Elastic Container Service Developer Guide.
DAEMON - The daemon scheduling strategy deploys exactly one task on each active container instance that meets all of the task placement constraints that you specify in your cluster. The service scheduler also evaluates the task placement constraints for running tasks. It also stops tasks that don’t meet the placement constraints. When using this strategy, you don’t need to specify a desired number of tasks, a task placement strategy, or use Service Auto Scaling policies. For more information, see Service scheduler concepts in the Amazon Elastic Container Service Developer Guide.

You can optionally specify a deployment configuration for your service. The deployment is initiated by changing properties. For example, the deployment might be initiated by the task definition or by your desired count of a service. This is done with an UpdateService operation. The default value for a replica service for minimumHealthyPercent is 100%. The default value for a daemon service for minimumHealthyPercent is 0%.

If a service uses the ECS deployment controller, the minimum healthy percent represents a lower limit on the number of tasks in a service that must remain in the RUNNING state during a deployment. Specifically, it represents it as a percentage of your desired number of tasks (rounded up to the nearest integer). This happens when any of your container instances are in the DRAINING state if the service contains tasks using the EC2 launch type. Using this parameter, you can deploy without using additional cluster capacity. For example, if you set your service to have desired number of four tasks and a minimum healthy percent of 50%, the scheduler might stop two existing tasks to free up cluster capacity before starting two new tasks. If they’re in the RUNNING state, tasks for services that don’t use a load balancer are considered healthy . If they’re in the RUNNING state and reported as healthy by the load balancer, tasks for services that do use a load balancer are considered healthy . The default value for minimum healthy percent is 100%.

If a service uses the ECS deployment controller, the maximum percent parameter represents an upper limit on the number of tasks in a service that are allowed in the RUNNING or PENDING state during a deployment. Specifically, it represents it as a percentage of the desired number of tasks (rounded down to the nearest integer). This happens when any of your container instances are in the DRAINING state if the service contains tasks using the EC2 launch type. Using this parameter, you can define the deployment batch size. For example, if your service has a desired number of four tasks and a maximum percent value of 200%, the scheduler may start four new tasks before stopping the four older tasks (provided that the cluster resources required to do this are available). The default value for maximum percent is 200%.

If a service uses either the CODE_DEPLOY or EXTERNAL deployment controller types and tasks that use the EC2 launch type, the minimum healthy percent and maximum percent values are used only to define the lower and upper limit on the number of the tasks in the service that remain in the RUNNING state. This is while the container instances are in the DRAINING state. If the tasks in the service use the Fargate launch type, the minimum healthy percent and maximum percent values aren’t used. This is the case even if they’re currently visible when describing your service.

When creating a service that uses the EXTERNAL deployment controller, you can specify only parameters that aren’t controlled at the task set level. The only required parameter is the service name. You control your services using the CreateTaskSet operation. For more information, see Amazon ECS deployment types in the Amazon Elastic Container Service Developer Guide.

When the service scheduler launches new tasks, it determines task placement. For information about task placement and task placement strategies, see Amazon ECS task placement in the Amazon Elastic Container Service Developer Guide.

Request Syntax

response = client.create_service(
    cluster='string',
    serviceName='string',
    taskDefinition='string',
    loadBalancers=[
        {
            'targetGroupArn': 'string',
            'loadBalancerName': 'string',
            'containerName': 'string',
            'containerPort': 123
        },
    ],
    serviceRegistries=[
        {
            'registryArn': 'string',
            'port': 123,
            'containerName': 'string',
            'containerPort': 123
        },
    ],
    desiredCount=123,
    clientToken='string',
    launchType='EC2'|'FARGATE'|'EXTERNAL',
    capacityProviderStrategy=[
        {
            'capacityProvider': 'string',
            'weight': 123,
            'base': 123
        },
    ],
    platformVersion='string',
    role='string',
    deploymentConfiguration={
        'deploymentCircuitBreaker': {
            'enable': True|False,
            'rollback': True|False
        },
        'maximumPercent': 123,
        'minimumHealthyPercent': 123,
        'alarms': {
            'alarmNames': [
                'string',
            ],
            'enable': True|False,
            'rollback': True|False
        }
    },
    placementConstraints=[
        {
            'type': 'distinctInstance'|'memberOf',
            'expression': 'string'
        },
    ],
    placementStrategy=[
        {
            'type': 'random'|'spread'|'binpack',
            'field': 'string'
        },
    ],
    networkConfiguration={
        'awsvpcConfiguration': {
            'subnets': [
                'string',
            ],
            'securityGroups': [
                'string',
            ],
            'assignPublicIp': 'ENABLED'|'DISABLED'
        }
    },
    healthCheckGracePeriodSeconds=123,
    schedulingStrategy='REPLICA'|'DAEMON',
    deploymentController={
        'type': 'ECS'|'CODE_DEPLOY'|'EXTERNAL'
    },
    tags=[
        {
            'key': 'string',
            'value': 'string'
        },
    ],
    enableECSManagedTags=True|False,
    propagateTags='TASK_DEFINITION'|'SERVICE'|'NONE',
    enableExecuteCommand=True|False,
    serviceConnectConfiguration={
        'enabled': True|False,
        'namespace': 'string',
        'services': [
            {
                'portName': 'string',
                'discoveryName': 'string',
                'clientAliases': [
                    {
                        'port': 123,
                        'dnsName': 'string'
                    },
                ],
                'ingressPortOverride': 123
            },
        ],
        'logConfiguration': {
            'logDriver': 'json-file'|'syslog'|'journald'|'gelf'|'fluentd'|'awslogs'|'splunk'|'awsfirelens',
            'options': {
                'string': 'string'
            },
            'secretOptions': [
                {
                    'name': 'string',
                    'valueFrom': 'string'
                },
            ]
        }
    }
)

Parameters:

cluster (string) – The short name or full Amazon Resource Name (ARN) of the cluster that you run your service on. If you do not specify a cluster, the default cluster is assumed.
serviceName (string) –
[REQUIRED]

The name of your service. Up to 255 letters (uppercase and lowercase), numbers, underscores, and hyphens are allowed. Service names must be unique within a cluster, but you can have similarly named services in multiple clusters within a Region or across multiple Regions.
taskDefinition (string) –
The family and revision ( family:revision) or full ARN of the task definition to run in your service. If a revision isn’t specified, the latest ACTIVE revision is used.

A task definition must be specified if the service uses either the ECS or CODE_DEPLOY deployment controllers.

For more information about deployment types, see Amazon ECS deployment types.
loadBalancers (list) –
A load balancer object representing the load balancers to use with your service. For more information, see Service load balancing in the Amazon Elastic Container Service Developer Guide.

If the service uses the rolling update ( ECS) deployment controller and using either an Application Load Balancer or Network Load Balancer, you must specify one or more target group ARNs to attach to the service. The service-linked role is required for services that use multiple target groups. For more information, see Using service-linked roles for Amazon ECS in the Amazon Elastic Container Service Developer Guide.

If the service uses the CODE_DEPLOY deployment controller, the service is required to use either an Application Load Balancer or Network Load Balancer. When creating an CodeDeploy deployment group, you specify two target groups (referred to as a targetGroupPair). During a deployment, CodeDeploy determines which task set in your service has the status PRIMARY, and it associates one target group with it. Then, it also associates the other target group with the replacement task set. The load balancer can also have up to two listeners: a required listener for production traffic and an optional listener that you can use to perform validation tests with Lambda functions before routing production traffic to it.

If you use the CODE_DEPLOY deployment controller, these values can be changed when updating the service.

For Application Load Balancers and Network Load Balancers, this object must contain the load balancer target group ARN, the container name, and the container port to access from the load balancer. The container name must be as it appears in a container definition. The load balancer name parameter must be omitted. When a task from this service is placed on a container instance, the container instance and port combination is registered as a target in the target group that’s specified here.

For Classic Load Balancers, this object must contain the load balancer name, the container name , and the container port to access from the load balancer. The container name must be as it appears in a container definition. The target group ARN parameter must be omitted. When a task from this service is placed on a container instance, the container instance is registered with the load balancer that’s specified here.

Services with tasks that use the awsvpc network mode (for example, those with the Fargate launch type) only support Application Load Balancers and Network Load Balancers. Classic Load Balancers aren’t supported. Also, when you create any target groups for these services, you must choose ip as the target type, not instance. This is because tasks that use the awsvpc network mode are associated with an elastic network interface, not an Amazon EC2 instance.
- (dict) –
  
  The load balancer configuration to use with a service or task set.
  
  When you add, update, or remove a load balancer configuration, Amazon ECS starts a new deployment with the updated Elastic Load Balancing configuration. This causes tasks to register to and deregister from load balancers.
  
  We recommend that you verify this on a test environment before you update the Elastic Load Balancing configuration.
  
  A service-linked role is required for services that use multiple target groups. For more information, see Using service-linked roles in the Amazon Elastic Container Service Developer Guide.
  - targetGroupArn (string) –
    
    The full Amazon Resource Name (ARN) of the Elastic Load Balancing target group or groups associated with a service or task set.
    
    A target group ARN is only specified when using an Application Load Balancer or Network Load Balancer. If you’re using a Classic Load Balancer, omit the target group ARN.
    
    For services using the ECS deployment controller, you can specify one or multiple target groups. For more information, see Registering multiple target groups with a service in the Amazon Elastic Container Service Developer Guide.
    
    For services using the CODE_DEPLOY deployment controller, you’re required to define two target groups for the load balancer. For more information, see Blue/green deployment with CodeDeploy in the Amazon Elastic Container Service Developer Guide.
    
    Warning
    If your service’s task definition uses the awsvpc network mode, you must choose ip as the target type, not instance. Do this when creating your target groups because tasks that use the awsvpc network mode are associated with an elastic network interface, not an Amazon EC2 instance. This network mode is required for the Fargate launch type.
  - loadBalancerName (string) –
    
    The name of the load balancer to associate with the Amazon ECS service or task set.
    
    A load balancer name is only specified when using a Classic Load Balancer. If you are using an Application Load Balancer or a Network Load Balancer the load balancer name parameter should be omitted.
  - containerName (string) –
    
    The name of the container (as it appears in a container definition) to associate with the load balancer.
  - containerPort (integer) –
    
    The port on the container to associate with the load balancer. This port must correspond to a containerPort in the task definition the tasks in the service are using. For tasks that use the EC2 launch type, the container instance they’re launched on must allow ingress traffic on the hostPort of the port mapping.
serviceRegistries (list) –
The details of the service discovery registry to associate with this service. For more information, see Service discovery.

Note
Each service may be associated with one service registry. Multiple service registries for each service isn’t supported.
- (dict) –
  
  The details for the service registry.
  
  Each service may be associated with one service registry. Multiple service registries for each service are not supported.
  
  When you add, update, or remove the service registries configuration, Amazon ECS starts a new deployment. New tasks are registered and deregistered to the updated service registry configuration.
  - registryArn (string) –
    
    The Amazon Resource Name (ARN) of the service registry. The currently supported service registry is Cloud Map. For more information, see CreateService.
  - port (integer) –
    
    The port value used if your service discovery service specified an SRV record. This field might be used if both the awsvpc network mode and SRV records are used.
  - containerName (string) –
    
    The container name value to be used for your service discovery service. It’s already specified in the task definition. If the task definition that your service task specifies uses the bridge or host network mode, you must specify a containerName and containerPort combination from the task definition. If the task definition that your service task specifies uses the awsvpc network mode and a type SRV DNS record is used, you must specify either a containerName and containerPort combination or a port value. However, you can’t specify both.
  - containerPort (integer) –
    
    The port value to be used for your service discovery service. It’s already specified in the task definition. If the task definition your service task specifies uses the bridge or host network mode, you must specify a containerName and containerPort combination from the task definition. If the task definition your service task specifies uses the awsvpc network mode and a type SRV DNS record is used, you must specify either a containerName and containerPort combination or a port value. However, you can’t specify both.
desiredCount (integer) –
The number of instantiations of the specified task definition to place and keep running in your service.

This is required if schedulingStrategy is REPLICA or isn’t specified. If schedulingStrategy is DAEMON then this isn’t required.
clientToken (string) – An identifier that you provide to ensure the idempotency of the request. It must be unique and is case sensitive. Up to 32 ASCII characters are allowed.
launchType (string) –
The infrastructure that you run your service on. For more information, see Amazon ECS launch types in the Amazon Elastic Container Service Developer Guide.

The FARGATE launch type runs your tasks on Fargate On-Demand infrastructure.

Note
Fargate Spot infrastructure is available for use but a capacity provider strategy must be used. For more information, see Fargate capacity providers in the Amazon ECS User Guide for Fargate.

The EC2 launch type runs your tasks on Amazon EC2 instances registered to your cluster.

The EXTERNAL launch type runs your tasks on your on-premises server or virtual machine (VM) capacity registered to your cluster.

A service can use either a launch type or a capacity provider strategy. If a launchType is specified, the capacityProviderStrategy parameter must be omitted.
capacityProviderStrategy (list) –
The capacity provider strategy to use for the service.

If a capacityProviderStrategy is specified, the launchType parameter must be omitted. If no capacityProviderStrategy or launchType is specified, the defaultCapacityProviderStrategy for the cluster is used.

A capacity provider strategy may contain a maximum of 6 capacity providers.
- (dict) –
  
  The details of a capacity provider strategy. A capacity provider strategy can be set when using the RunTask or CreateCluster APIs or as the default capacity provider strategy for a cluster with the CreateCluster API.
  
  Only capacity providers that are already associated with a cluster and have an ACTIVE or UPDATING status can be used in a capacity provider strategy. The PutClusterCapacityProviders API is used to associate a capacity provider with a cluster.
  
  If specifying a capacity provider that uses an Auto Scaling group, the capacity provider must already be created. New Auto Scaling group capacity providers can be created with the CreateCapacityProvider API operation.
  
  To use a Fargate capacity provider, specify either the FARGATE or FARGATE_SPOT capacity providers. The Fargate capacity providers are available to all accounts and only need to be associated with a cluster to be used in a capacity provider strategy.
  
  A capacity provider strategy may contain a maximum of 6 capacity providers.
  - capacityProvider (string) – [REQUIRED]
    
    The short name of the capacity provider.
  - weight (integer) –
    
    The weight value designates the relative percentage of the total number of tasks launched that should use the specified capacity provider. The weight value is taken into consideration after the base value, if defined, is satisfied.
    
    If no weight value is specified, the default value of 0 is used. When multiple capacity providers are specified within a capacity provider strategy, at least one of the capacity providers must have a weight value greater than zero and any capacity providers with a weight of 0 can’t be used to place tasks. If you specify multiple capacity providers in a strategy that all have a weight of 0, any RunTask or CreateService actions using the capacity provider strategy will fail.
    
    An example scenario for using weights is defining a strategy that contains two capacity providers and both have a weight of 1, then when the base is satisfied, the tasks will be split evenly across the two capacity providers. Using that same logic, if you specify a weight of 1 for capacityProviderA and a weight of 4 for capacityProviderB, then for every one task that’s run using capacityProviderA, four tasks would use capacityProviderB.
  - base (integer) –
    
    The base value designates how many tasks, at a minimum, to run on the specified capacity provider. Only one capacity provider in a capacity provider strategy can have a base defined. If no value is specified, the default value of 0 is used.
platformVersion (string) – The platform version that your tasks in the service are running on. A platform version is specified only for tasks using the Fargate launch type. If one isn’t specified, the LATEST platform version is used. For more information, see Fargate platform versions in the Amazon Elastic Container Service Developer Guide.
role (string) –
The name or full Amazon Resource Name (ARN) of the IAM role that allows Amazon ECS to make calls to your load balancer on your behalf. This parameter is only permitted if you are using a load balancer with your service and your task definition doesn’t use the awsvpc network mode. If you specify the role parameter, you must also specify a load balancer object with the loadBalancers parameter.

Warning
If your account has already created the Amazon ECS service-linked role, that role is used for your service unless you specify a role here. The service-linked role is required if your task definition uses the awsvpc network mode or if the service is configured to use service discovery, an external deployment controller, multiple target groups, or Elastic Inference accelerators in which case you don’t specify a role here. For more information, see Using service-linked roles for Amazon ECS in the Amazon Elastic Container Service Developer Guide.

If your specified role has a path other than /, then you must either specify the full role ARN (this is recommended) or prefix the role name with the path. For example, if a role with the name bar has a path of /foo/ then you would specify /foo/bar as the role name. For more information, see Friendly names and paths in the IAM User Guide.
deploymentConfiguration (dict) –
Optional deployment parameters that control how many tasks run during the deployment and the ordering of stopping and starting tasks.
- deploymentCircuitBreaker (dict) –
  
  Note
  The deployment circuit breaker can only be used for services using the rolling update ( ECS) deployment type.
  
  The deployment circuit breaker determines whether a service deployment will fail if the service can’t reach a steady state. If you use the deployment circuit breaker, a service deployment will transition to a failed state and stop launching new tasks. If you use the rollback option, when a service deployment fails, the service is rolled back to the last deployment that completed successfully. For more information, see Rolling update in the Amazon Elastic Container Service Developer Guide
  - enable (boolean) – [REQUIRED]
    
    Determines whether to use the deployment circuit breaker logic for the service.
  - rollback (boolean) – [REQUIRED]
    
    Determines whether to configure Amazon ECS to roll back the service if a service deployment fails. If rollback is on, when a service deployment fails, the service is rolled back to the last deployment that completed successfully.
- maximumPercent (integer) –
  
  If a service is using the rolling update ( ECS) deployment type, the maximumPercent parameter represents an upper limit on the number of your service’s tasks that are allowed in the RUNNING or PENDING state during a deployment, as a percentage of the desiredCount (rounded down to the nearest integer). This parameter enables you to define the deployment batch size. For example, if your service is using the REPLICA service scheduler and has a desiredCount of four tasks and a maximumPercent value of 200%, the scheduler may start four new tasks before stopping the four older tasks (provided that the cluster resources required to do this are available). The default maximumPercent value for a service using the REPLICA service scheduler is 200%.
  
  If a service is using either the blue/green ( CODE_DEPLOY) or EXTERNAL deployment types and tasks that use the EC2 launch type, the maximum percent value is set to the default value and is used to define the upper limit on the number of the tasks in the service that remain in the RUNNING state while the container instances are in the DRAINING state. If the tasks in the service use the Fargate launch type, the maximum percent value is not used, although it is returned when describing your service.
- minimumHealthyPercent (integer) –
  
  If a service is using the rolling update ( ECS) deployment type, the minimumHealthyPercent represents a lower limit on the number of your service’s tasks that must remain in the RUNNING state during a deployment, as a percentage of the desiredCount (rounded up to the nearest integer). This parameter enables you to deploy without using additional cluster capacity. For example, if your service has a desiredCount of four tasks and a minimumHealthyPercent of 50%, the service scheduler may stop two existing tasks to free up cluster capacity before starting two new tasks.
  
  For services that do not use a load balancer, the following should be noted:
  - A service is considered healthy if all essential containers within the tasks in the service pass their health checks.
  - If a task has no essential containers with a health check defined, the service scheduler will wait for 40 seconds after a task reaches a RUNNING state before the task is counted towards the minimum healthy percent total.
  - If a task has one or more essential containers with a health check defined, the service scheduler will wait for the task to reach a healthy status before counting it towards the minimum healthy percent total. A task is considered healthy when all essential containers within the task have passed their health checks. The amount of time the service scheduler can wait for is determined by the container health check settings.
  For services are that do use a load balancer, the following should be noted:
  - If a task has no essential containers with a health check defined, the service scheduler will wait for the load balancer target group health check to return a healthy status before counting the task towards the minimum healthy percent total.
  - If a task has an essential container with a health check defined, the service scheduler will wait for both the task to reach a healthy status and the load balancer target group health check to return a healthy status before counting the task towards the minimum healthy percent total.
  If a service is using either the blue/green ( CODE_DEPLOY) or EXTERNAL deployment types and is running tasks that use the EC2 launch type, the minimum healthy percent value is set to the default value and is used to define the lower limit on the number of the tasks in the service that remain in the RUNNING state while the container instances are in the DRAINING state. If a service is using either the blue/green ( CODE_DEPLOY) or EXTERNAL deployment types and is running tasks that use the Fargate launch type, the minimum healthy percent value is not used, although it is returned when describing your service.
- alarms (dict) –
  
  Information about the CloudWatch alarms.
  - alarmNames (list) – [REQUIRED]
    
    One or more CloudWatch alarm names. Use a “,” to separate the alarms.
    - (string) –
  - enable (boolean) – [REQUIRED]
    
    Determines whether to use the CloudWatch alarm option in the service deployment process.
  - rollback (boolean) – [REQUIRED]
    
    Determines whether to configure Amazon ECS to roll back the service if a service deployment fails. If rollback is used, when a service deployment fails, the service is rolled back to the last deployment that completed successfully.
placementConstraints (list) –
An array of placement constraint objects to use for tasks in your service. You can specify a maximum of 10 constraints for each task. This limit includes constraints in the task definition and those specified at runtime.
- (dict) –
  
  An object representing a constraint on task placement. For more information, see Task placement constraints in the Amazon Elastic Container Service Developer Guide.
  
  Note
  If you’re using the Fargate launch type, task placement constraints aren’t supported.
  - type (string) –
    
    The type of constraint. Use distinctInstance to ensure that each task in a particular group is running on a different container instance. Use memberOf to restrict the selection to a group of valid candidates.
  - expression (string) –
    
    A cluster query language expression to apply to the constraint. The expression can have a maximum length of 2000 characters. You can’t specify an expression if the constraint type is distinctInstance. For more information, see Cluster query language in the Amazon Elastic Container Service Developer Guide.
placementStrategy (list) –
The placement strategy objects to use for tasks in your service. You can specify a maximum of 5 strategy rules for each service.
- (dict) –
  
  The task placement strategy for a task or service. For more information, see Task placement strategies in the Amazon Elastic Container Service Developer Guide.
  - type (string) –
    
    The type of placement strategy. The random placement strategy randomly places tasks on available candidates. The spread placement strategy spreads placement across available candidates evenly based on the field parameter. The binpack strategy places tasks on available candidates that have the least available amount of the resource that’s specified with the field parameter. For example, if you binpack on memory, a task is placed on the instance with the least amount of remaining memory but still enough to run the task.
  - field (string) –
    
    The field to apply the placement strategy against. For the spread placement strategy, valid values are instanceId (or host, which has the same effect), or any platform or custom attribute that’s applied to a container instance, such as attribute:ecs.availability-zone. For the binpack placement strategy, valid values are cpu and memory. For the random placement strategy, this field is not used.
networkConfiguration (dict) –
The network configuration for the service. This parameter is required for task definitions that use the awsvpc network mode to receive their own elastic network interface, and it isn’t supported for other network modes. For more information, see Task networking in the Amazon Elastic Container Service Developer Guide.
- awsvpcConfiguration (dict) –
  
  The VPC subnets and security groups that are associated with a task.
  
  Note
  All specified subnets and security groups must be from the same VPC.
  - subnets (list) – [REQUIRED]
    
    The IDs of the subnets associated with the task or service. There’s a limit of 16 subnets that can be specified per AwsVpcConfiguration.
    
    Note
    All specified subnets must be from the same VPC.
    - (string) –
  - securityGroups (list) –
    
    The IDs of the security groups associated with the task or service. If you don’t specify a security group, the default security group for the VPC is used. There’s a limit of 5 security groups that can be specified per AwsVpcConfiguration.
    
    Note
    All specified security groups must be from the same VPC.
    - (string) –
  - assignPublicIp (string) –
    
    Whether the task’s elastic network interface receives a public IP address. The default value is DISABLED.
healthCheckGracePeriodSeconds (integer) –
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. This is only used when your service is configured to use a load balancer. If your service has a load balancer defined and you don’t specify a health check grace period value, the default value of 0 is used.

If you do not use an Elastic Load Balancing, we recommend that you use the startPeriod in the task definition health check parameters. For more information, see Health check.

If your service’s tasks take a while to start and respond to Elastic Load Balancing health checks, you can specify a health check grace period of up to 2,147,483,647 seconds (about 69 years). During that time, the Amazon ECS service scheduler ignores health check status. This grace period can prevent the service scheduler from marking tasks as unhealthy and stopping them before they have time to come up.
schedulingStrategy (string) –
The scheduling strategy to use for the service. For more information, see Services.

There are two service scheduler strategies available:
- REPLICA-The replica scheduling strategy places and maintains the desired number of tasks across your cluster. By default, the service scheduler spreads tasks across Availability Zones. You can use task placement strategies and constraints to customize task placement decisions. This scheduler strategy is required if the service uses the CODE_DEPLOY or EXTERNAL deployment controller types.
- DAEMON-The daemon scheduling strategy deploys exactly one task on each active container instance that meets all of the task placement constraints that you specify in your cluster. The service scheduler also evaluates the task placement constraints for running tasks and will stop tasks that don’t meet the placement constraints. When you’re using this strategy, you don’t need to specify a desired number of tasks, a task placement strategy, or use Service Auto Scaling policies.
Note
Tasks using the Fargate launch type or the CODE_DEPLOY or EXTERNAL deployment controller types don’t support the DAEMON scheduling strategy.
deploymentController (dict) –
The deployment controller to use for the service. If no deployment controller is specified, the default value of ECS is used.
- type (string) – [REQUIRED]
  
  The deployment controller type to use.
  
  There are three deployment controller types available:
  
  ECS
  
  The rolling update ( ECS) deployment type involves replacing the current running version of the container with the latest version. The number of containers Amazon ECS adds or removes from the service during a rolling update is controlled by adjusting the minimum and maximum number of healthy tasks allowed during a service deployment, as specified in the DeploymentConfiguration.
  
  CODE_DEPLOY
  
  The blue/green ( CODE_DEPLOY) deployment type uses the blue/green deployment model powered by CodeDeploy, which allows you to verify a new deployment of a service before sending production traffic to it.
  
  EXTERNAL
  
  The external ( EXTERNAL) deployment type enables you to use any third-party deployment controller for full control over the deployment process for an Amazon ECS service.
tags (list) –
The metadata that you apply to the service to help you categorize and organize them. Each tag consists of a key and an optional value, both of which you define. When a service is deleted, the tags are deleted as well.

The following basic restrictions apply to tags:
- Maximum number of tags per resource - 50
- For each resource, each tag key must be unique, and each tag key can have only one value.
- Maximum key length - 128 Unicode characters in UTF-8
- Maximum value length - 256 Unicode characters in UTF-8
- If your tagging schema is used across multiple services and resources, remember that other services may have restrictions on allowed characters. Generally allowed characters are: letters, numbers, and spaces representable in UTF-8, and the following characters: + - = . _ : / @.
- Tag keys and values are case-sensitive.
- Do not use aws:, AWS:, or any upper or lowercase combination of such as a prefix for either keys or values as it is reserved for Amazon Web Services use. You cannot edit or delete tag keys or values with this prefix. Tags with this prefix do not count against your tags per resource limit.
- (dict) –
  
  The metadata that you apply to a resource to help you categorize and organize them. Each tag consists of a key and an optional value. You define them.
  
  The following basic restrictions apply to tags:
  - Maximum number of tags per resource - 50
  - For each resource, each tag key must be unique, and each tag key can have only one value.
  - Maximum key length - 128 Unicode characters in UTF-8
  - Maximum value length - 256 Unicode characters in UTF-8
  - If your tagging schema is used across multiple services and resources, remember that other services may have restrictions on allowed characters. Generally allowed characters are: letters, numbers, and spaces representable in UTF-8, and the following characters: + - = . _ : / @.
  - Tag keys and values are case-sensitive.
  - Do not use aws:, AWS:, or any upper or lowercase combination of such as a prefix for either keys or values as it is reserved for Amazon Web Services use. You cannot edit or delete tag keys or values with this prefix. Tags with this prefix do not count against your tags per resource limit.
  - key (string) –
    
    One part of a key-value pair that make up a tag. A key is a general label that acts like a category for more specific tag values.
  - value (string) –
    
    The optional part of a key-value pair that make up a tag. A value acts as a descriptor within a tag category (key).
enableECSManagedTags (boolean) –
Specifies whether to turn on Amazon ECS managed tags for the tasks within the service. For more information, see Tagging your Amazon ECS resources in the Amazon Elastic Container Service Developer Guide.

When you use Amazon ECS managed tags, you need to set the propagateTags request parameter.
propagateTags (string) –
Specifies whether to propagate the tags from the task definition to the task. If no value is specified, the tags aren’t propagated. Tags can only be propagated to the task during task creation. To add tags to a task after task creation, use the TagResource API action.

The default is NONE.
enableExecuteCommand (boolean) – Determines whether the execute command functionality is turned on for the service. If true, this enables execute command functionality on all containers in the service tasks.
serviceConnectConfiguration (dict) –
The configuration for this service to discover and connect to services, and be discovered by, and connected from, other services within a namespace.

Tasks that run in a namespace can use short names to connect to services in the namespace. Tasks can connect to services across all of the clusters in the namespace. Tasks connect through a managed proxy container that collects logs and metrics for increased visibility. Only the tasks that Amazon ECS services create are supported with Service Connect. For more information, see Service Connect in the Amazon Elastic Container Service Developer Guide.
- enabled (boolean) – [REQUIRED]
  
  Specifies whether to use Service Connect with this service.
- namespace (string) –
  
  The namespace name or full Amazon Resource Name (ARN) of the Cloud Map namespace for use with Service Connect. The namespace must be in the same Amazon Web Services Region as the Amazon ECS service and cluster. The type of namespace doesn’t affect Service Connect. For more information about Cloud Map, see Working with Services in the Cloud Map Developer Guide.
- services (list) –
  
  The list of Service Connect service objects. These are names and aliases (also known as endpoints) that are used by other Amazon ECS services to connect to this service.
  
  This field is not required for a “client” Amazon ECS service that’s a member of a namespace only to connect to other services within the namespace. An example of this would be a frontend application that accepts incoming requests from either a load balancer that’s attached to the service or by other means.
  
  An object selects a port from the task definition, assigns a name for the Cloud Map service, and a list of aliases (endpoints) and ports for client applications to refer to this service.
  - (dict) –
    
    The Service Connect service object configuration. For more information, see Service Connect in the Amazon Elastic Container Service Developer Guide.
    - portName (string) – [REQUIRED]
      
      The portName must match the name of one of the portMappings from all the containers in the task definition of this Amazon ECS service.
    - discoveryName (string) –
      
      The discoveryName is the name of the new Cloud Map service that Amazon ECS creates for this Amazon ECS service. This must be unique within the Cloud Map namespace. The name can contain up to 64 characters. The name can include lowercase letters, numbers, underscores (_), and hyphens (-). The name can’t start with a hyphen.
      
      If the discoveryName isn’t specified, the port mapping name from the task definition is used in portName.namespace.
    - clientAliases (list) –
      
      The list of client aliases for this Service Connect service. You use these to assign names that can be used by client applications. The maximum number of client aliases that you can have in this list is 1.
      
      Each alias (“endpoint”) is a fully-qualified name and port number that other Amazon ECS tasks (“clients”) can use to connect to this service.
      
      Each name and port mapping must be unique within the namespace.
      
      For each ServiceConnectService, you must provide at least one clientAlias with one port.
      - (dict) –
        
        Each alias (“endpoint”) is a fully-qualified name and port number that other tasks (“clients”) can use to connect to this service.
        
        Each name and port mapping must be unique within the namespace.
        
        Tasks that run in a namespace can use short names to connect to services in the namespace. Tasks can connect to services across all of the clusters in the namespace. Tasks connect through a managed proxy container that collects logs and metrics for increased visibility. Only the tasks that Amazon ECS services create are supported with Service Connect. For more information, see Service Connect in the Amazon Elastic Container Service Developer Guide.
        
        port (integer) – [REQUIRED]
        
        The listening port number for the Service Connect proxy. This port is available inside of all of the tasks within the same namespace.
        
        To avoid changing your applications in client Amazon ECS services, set this to the same port that the client application uses by default. For more information, see Service Connect in the Amazon Elastic Container Service Developer Guide.
        
        dnsName (string) –
        
        The dnsName is the name that you use in the applications of client tasks to connect to this service. The name must be a valid DNS name but doesn’t need to be fully-qualified. The name can include up to 127 characters. The name can include lowercase letters, numbers, underscores (_), hyphens (-), and periods (.). The name can’t start with a hyphen.
        
        If this parameter isn’t specified, the default value of discoveryName.namespace is used. If the discoveryName isn’t specified, the port mapping name from the task definition is used in portName.namespace.
        
        To avoid changing your applications in client Amazon ECS services, set this to the same name that the client application uses by default. For example, a few common names are database, db, or the lowercase name of a database, such as mysql or redis. For more information, see Service Connect in the Amazon Elastic Container Service Developer Guide.
    - ingressPortOverride (integer) –
      
      The port number for the Service Connect proxy to listen on.
      
      Use the value of this field to bypass the proxy for traffic on the port number specified in the named portMapping in the task definition of this application, and then use it in your VPC security groups to allow traffic into the proxy for this Amazon ECS service.
      
      In awsvpc mode and Fargate, the default value is the container port number. The container port number is in the portMapping in the task definition. In bridge mode, the default value is the ephemeral port of the Service Connect proxy.
- logConfiguration (dict) –
  
  The log configuration for the container. This parameter maps to LogConfig in the Create a container section of the Docker Remote API and the --log-driver option to docker run.
  
  By default, containers use the same logging driver that the Docker daemon uses. However, the container might use a different logging driver than the Docker daemon by specifying a log driver configuration in the container definition. For more information about the options for different supported log drivers, see Configure logging drivers in the Docker documentation.
  
  Understand the following when specifying a log configuration for your containers.
  - Amazon ECS currently supports a subset of the logging drivers available to the Docker daemon (shown in the valid values below). Additional log drivers may be available in future releases of the Amazon ECS container agent.
  - This parameter requires version 1.18 of the Docker Remote API or greater on your container instance.
  - For tasks that are hosted on Amazon EC2 instances, the Amazon ECS container agent must register the available logging drivers with the ECS_AVAILABLE_LOGGING_DRIVERS environment variable before containers placed on that instance can use these log configuration options. For more information, see Amazon ECS container agent configuration in the Amazon Elastic Container Service Developer Guide.
  - For tasks that are on Fargate, because you don’t have access to the underlying infrastructure your tasks are hosted on, any additional software needed must be installed outside of the task. For example, the Fluentd output aggregators or a remote host running Logstash to send Gelf logs to.
  - logDriver (string) – [REQUIRED]
    
    The log driver to use for the container.
    
    For tasks on Fargate, the supported log drivers are awslogs, splunk, and awsfirelens.
    
    For tasks hosted on Amazon EC2 instances, the supported log drivers are awslogs, fluentd, gelf, json-file, journald, logentries, syslog, splunk, and awsfirelens.
    
    For more information about using the awslogs log driver, see Using the awslogs log driver in the Amazon Elastic Container Service Developer Guide.
    
    For more information about using the awsfirelens log driver, see Custom log routing in the Amazon Elastic Container Service Developer Guide.
    
    Note
    If you have a custom driver that isn’t listed, you can fork the Amazon ECS container agent project that’s available on GitHub and customize it to work with that driver. We encourage you to submit pull requests for changes that you would like to have included. However, we don’t currently provide support for running modified copies of this software.
  - options (dict) –
    
    The configuration options to send to the log driver. This parameter requires version 1.19 of the Docker Remote API or greater on your container instance. To check the Docker Remote API version on your container instance, log in to your container instance and run the following command: sudo docker version --format '{{.Server.APIVersion}}'
    - (string) –
      - (string) –
  - secretOptions (list) –
    
    The secrets to pass to the log configuration. For more information, see Specifying sensitive data in the Amazon Elastic Container Service Developer Guide.
    - (dict) –
      
      An object representing the secret to expose to your container. Secrets can be exposed to a container in the following ways:
      - To inject sensitive data into your containers as environment variables, use the secrets container definition parameter.
      - To reference sensitive information in the log configuration of a container, use the secretOptions container definition parameter.
      For more information, see Specifying sensitive data in the Amazon Elastic Container Service Developer Guide.
      - name (string) – [REQUIRED]
        
        The name of the secret.
      - valueFrom (string) – [REQUIRED]
        
        The secret to expose to the container. The supported values are either the full ARN of the Secrets Manager secret or the full ARN of the parameter in the SSM Parameter Store.
        
        For information about the require Identity and Access Management permissions, see Required IAM permissions for Amazon ECS secrets (for Secrets Manager) or Required IAM permissions for Amazon ECS secrets (for Systems Manager Parameter store) in the Amazon Elastic Container Service Developer Guide.
        
        Note
        If the SSM Parameter Store parameter exists in the same Region as the task you’re launching, then you can use either the full ARN or name of the parameter. If the parameter exists in a different Region, then the full ARN must be specified.

Return type:

dict

Returns:

Response Syntax

{
    'service': {
        'serviceArn': 'string',
        'serviceName': 'string',
        'clusterArn': 'string',
        'loadBalancers': [
            {
                'targetGroupArn': 'string',
                'loadBalancerName': 'string',
                'containerName': 'string',
                'containerPort': 123
            },
        ],
        'serviceRegistries': [
            {
                'registryArn': 'string',
                'port': 123,
                'containerName': 'string',
                'containerPort': 123
            },
        ],
        'status': 'string',
        'desiredCount': 123,
        'runningCount': 123,
        'pendingCount': 123,
        'launchType': 'EC2'|'FARGATE'|'EXTERNAL',
        'capacityProviderStrategy': [
            {
                'capacityProvider': 'string',
                'weight': 123,
                'base': 123
            },
        ],
        'platformVersion': 'string',
        'platformFamily': 'string',
        'taskDefinition': 'string',
        'deploymentConfiguration': {
            'deploymentCircuitBreaker': {
                'enable': True|False,
                'rollback': True|False
            },
            'maximumPercent': 123,
            'minimumHealthyPercent': 123,
            'alarms': {
                'alarmNames': [
                    'string',
                ],
                'enable': True|False,
                'rollback': True|False
            }
        },
        'taskSets': [
            {
                'id': 'string',
                'taskSetArn': 'string',
                'serviceArn': 'string',
                'clusterArn': 'string',
                'startedBy': 'string',
                'externalId': 'string',
                'status': 'string',
                'taskDefinition': 'string',
                'computedDesiredCount': 123,
                'pendingCount': 123,
                'runningCount': 123,
                'createdAt': datetime(2015, 1, 1),
                'updatedAt': datetime(2015, 1, 1),
                'launchType': 'EC2'|'FARGATE'|'EXTERNAL',
                'capacityProviderStrategy': [
                    {
                        'capacityProvider': 'string',
                        'weight': 123,
                        'base': 123
                    },
                ],
                'platformVersion': 'string',
                'platformFamily': 'string',
                'networkConfiguration': {
                    'awsvpcConfiguration': {
                        'subnets': [
                            'string',
                        ],
                        'securityGroups': [
                            'string',
                        ],
                        'assignPublicIp': 'ENABLED'|'DISABLED'
                    }
                },
                'loadBalancers': [
                    {
                        'targetGroupArn': 'string',
                        'loadBalancerName': 'string',
                        'containerName': 'string',
                        'containerPort': 123
                    },
                ],
                'serviceRegistries': [
                    {
                        'registryArn': 'string',
                        'port': 123,
                        'containerName': 'string',
                        'containerPort': 123
                    },
                ],
                'scale': {
                    'value': 123.0,
                    'unit': 'PERCENT'
                },
                'stabilityStatus': 'STEADY_STATE'|'STABILIZING',
                'stabilityStatusAt': datetime(2015, 1, 1),
                'tags': [
                    {
                        'key': 'string',
                        'value': 'string'
                    },
                ]
            },
        ],
        'deployments': [
            {
                'id': 'string',
                'status': 'string',
                'taskDefinition': 'string',
                'desiredCount': 123,
                'pendingCount': 123,
                'runningCount': 123,
                'failedTasks': 123,
                'createdAt': datetime(2015, 1, 1),
                'updatedAt': datetime(2015, 1, 1),
                'capacityProviderStrategy': [
                    {
                        'capacityProvider': 'string',
                        'weight': 123,
                        'base': 123
                    },
                ],
                'launchType': 'EC2'|'FARGATE'|'EXTERNAL',
                'platformVersion': 'string',
                'platformFamily': 'string',
                'networkConfiguration': {
                    'awsvpcConfiguration': {
                        'subnets': [
                            'string',
                        ],
                        'securityGroups': [
                            'string',
                        ],
                        'assignPublicIp': 'ENABLED'|'DISABLED'
                    }
                },
                'rolloutState': 'COMPLETED'|'FAILED'|'IN_PROGRESS',
                'rolloutStateReason': 'string',
                'serviceConnectConfiguration': {
                    'enabled': True|False,
                    'namespace': 'string',
                    'services': [
                        {
                            'portName': 'string',
                            'discoveryName': 'string',
                            'clientAliases': [
                                {
                                    'port': 123,
                                    'dnsName': 'string'
                                },
                            ],
                            'ingressPortOverride': 123
                        },
                    ],
                    'logConfiguration': {
                        'logDriver': 'json-file'|'syslog'|'journald'|'gelf'|'fluentd'|'awslogs'|'splunk'|'awsfirelens',
                        'options': {
                            'string': 'string'
                        },
                        'secretOptions': [
                            {
                                'name': 'string',
                                'valueFrom': 'string'
                            },
                        ]
                    }
                },
                'serviceConnectResources': [
                    {
                        'discoveryName': 'string',
                        'discoveryArn': 'string'
                    },
                ]
            },
        ],
        'roleArn': 'string',
        'events': [
            {
                'id': 'string',
                'createdAt': datetime(2015, 1, 1),
                'message': 'string'
            },
        ],
        'createdAt': datetime(2015, 1, 1),
        'placementConstraints': [
            {
                'type': 'distinctInstance'|'memberOf',
                'expression': 'string'
            },
        ],
        'placementStrategy': [
            {
                'type': 'random'|'spread'|'binpack',
                'field': 'string'
            },
        ],
        'networkConfiguration': {
            'awsvpcConfiguration': {
                'subnets': [
                    'string',
                ],
                'securityGroups': [
                    'string',
                ],
                'assignPublicIp': 'ENABLED'|'DISABLED'
            }
        },
        'healthCheckGracePeriodSeconds': 123,
        'schedulingStrategy': 'REPLICA'|'DAEMON',
        'deploymentController': {
            'type': 'ECS'|'CODE_DEPLOY'|'EXTERNAL'
        },
        'tags': [
            {
                'key': 'string',
                'value': 'string'
            },
        ],
        'createdBy': 'string',
        'enableECSManagedTags': True|False,
        'propagateTags': 'TASK_DEFINITION'|'SERVICE'|'NONE',
        'enableExecuteCommand': True|False
    }
}

Response Structure

(dict) –
- service (dict) –
  
  The full description of your service following the create call.
  
  A service will return either a capacityProviderStrategy or launchType parameter, but not both, depending where one was specified when it was created.
  
  If a service is using the ECS deployment controller, the deploymentController and taskSets parameters will not be returned.
  
  if the service uses the CODE_DEPLOY deployment controller, the deploymentController, taskSets and deployments parameters will be returned, however the deployments parameter will be an empty list.
  - serviceArn (string) –
    
    The ARN that identifies the service. For more information about the ARN format, see Amazon Resource Name (ARN) in the Amazon ECS Developer Guide.
  - serviceName (string) –
    
    The name of your service. Up to 255 letters (uppercase and lowercase), numbers, underscores, and hyphens are allowed. Service names must be unique within a cluster. However, you can have similarly named services in multiple clusters within a Region or across multiple Regions.
  - clusterArn (string) –
    
    The Amazon Resource Name (ARN) of the cluster that hosts the service.
  - loadBalancers (list) –
    
    A list of Elastic Load Balancing load balancer objects. It contains the load balancer name, the container name, and the container port to access from the load balancer. The container name is as it appears in a container definition.
    - (dict) –
      
      The load balancer configuration to use with a service or task set.
      
      When you add, update, or remove a load balancer configuration, Amazon ECS starts a new deployment with the updated Elastic Load Balancing configuration. This causes tasks to register to and deregister from load balancers.
      
      We recommend that you verify this on a test environment before you update the Elastic Load Balancing configuration.
      
      A service-linked role is required for services that use multiple target groups. For more information, see Using service-linked roles in the Amazon Elastic Container Service Developer Guide.
      - targetGroupArn (string) –
        
        The full Amazon Resource Name (ARN) of the Elastic Load Balancing target group or groups associated with a service or task set.
        
        A target group ARN is only specified when using an Application Load Balancer or Network Load Balancer. If you’re using a Classic Load Balancer, omit the target group ARN.
        
        For services using the ECS deployment controller, you can specify one or multiple target groups. For more information, see Registering multiple target groups with a service in the Amazon Elastic Container Service Developer Guide.
        
        For services using the CODE_DEPLOY deployment controller, you’re required to define two target groups for the load balancer. For more information, see Blue/green deployment with CodeDeploy in the Amazon Elastic Container Service Developer Guide.
        
        Warning
        If your service’s task definition uses the awsvpc network mode, you must choose ip as the target type, not instance. Do this when creating your target groups because tasks that use the awsvpc network mode are associated with an elastic network interface, not an Amazon EC2 instance. This network mode is required for the Fargate launch type.
      - loadBalancerName (string) –
        
        The name of the load balancer to associate with the Amazon ECS service or task set.
        
        A load balancer name is only specified when using a Classic Load Balancer. If you are using an Application Load Balancer or a Network Load Balancer the load balancer name parameter should be omitted.
      - containerName (string) –
        
        The name of the container (as it appears in a container definition) to associate with the load balancer.
      - containerPort (integer) –
        
        The port on the container to associate with the load balancer. This port must correspond to a containerPort in the task definition the tasks in the service are using. For tasks that use the EC2 launch type, the container instance they’re launched on must allow ingress traffic on the hostPort of the port mapping.
  - serviceRegistries (list) –
    
    The details for the service discovery registries to assign to this service. For more information, see Service Discovery.
    - (dict) –
      
      The details for the service registry.
      
      Each service may be associated with one service registry. Multiple service registries for each service are not supported.
      
      When you add, update, or remove the service registries configuration, Amazon ECS starts a new deployment. New tasks are registered and deregistered to the updated service registry configuration.
      - registryArn (string) –
        
        The Amazon Resource Name (ARN) of the service registry. The currently supported service registry is Cloud Map. For more information, see CreateService.
      - port (integer) –
        
        The port value used if your service discovery service specified an SRV record. This field might be used if both the awsvpc network mode and SRV records are used.
      - containerName (string) –
        
        The container name value to be used for your service discovery service. It’s already specified in the task definition. If the task definition that your service task specifies uses the bridge or host network mode, you must specify a containerName and containerPort combination from the task definition. If the task definition that your service task specifies uses the awsvpc network mode and a type SRV DNS record is used, you must specify either a containerName and containerPort combination or a port value. However, you can’t specify both.
      - containerPort (integer) –
        
        The port value to be used for your service discovery service. It’s already specified in the task definition. If the task definition your service task specifies uses the bridge or host network mode, you must specify a containerName and containerPort combination from the task definition. If the task definition your service task specifies uses the awsvpc network mode and a type SRV DNS record is used, you must specify either a containerName and containerPort combination or a port value. However, you can’t specify both.
  - status (string) –
    
    The status of the service. The valid values are ACTIVE, DRAINING, or INACTIVE.
  - desiredCount (integer) –
    
    The desired number of instantiations of the task definition to keep running on the service. This value is specified when the service is created with CreateService, and it can be modified with UpdateService.
  - runningCount (integer) –
    
    The number of tasks in the cluster that are in the RUNNING state.
  - pendingCount (integer) –
    
    The number of tasks in the cluster that are in the PENDING state.
  - launchType (string) –
    
    The launch type the service is using. When using the DescribeServices API, this field is omitted if the service was created using a capacity provider strategy.
  - capacityProviderStrategy (list) –
    
    The capacity provider strategy the service uses. When using the DescribeServices API, this field is omitted if the service was created using a launch type.
    - (dict) –
      
      The details of a capacity provider strategy. A capacity provider strategy can be set when using the RunTask or CreateCluster APIs or as the default capacity provider strategy for a cluster with the CreateCluster API.
      
      Only capacity providers that are already associated with a cluster and have an ACTIVE or UPDATING status can be used in a capacity provider strategy. The PutClusterCapacityProviders API is used to associate a capacity provider with a cluster.
      
      If specifying a capacity provider that uses an Auto Scaling group, the capacity provider must already be created. New Auto Scaling group capacity providers can be created with the CreateCapacityProvider API operation.
      
      To use a Fargate capacity provider, specify either the FARGATE or FARGATE_SPOT capacity providers. The Fargate capacity providers are available to all accounts and only need to be associated with a cluster to be used in a capacity provider strategy.
      
      A capacity provider strategy may contain a maximum of 6 capacity providers.
      - capacityProvider (string) –
        
        The short name of the capacity provider.
      - weight (integer) –
        
        The weight value designates the relative percentage of the total number of tasks launched that should use the specified capacity provider. The weight value is taken into consideration after the base value, if defined, is satisfied.
        
        If no weight value is specified, the default value of 0 is used. When multiple capacity providers are specified within a capacity provider strategy, at least one of the capacity providers must have a weight value greater than zero and any capacity providers with a weight of 0 can’t be used to place tasks. If you specify multiple capacity providers in a strategy that all have a weight of 0, any RunTask or CreateService actions using the capacity provider strategy will fail.
        
        An example scenario for using weights is defining a strategy that contains two capacity providers and both have a weight of 1, then when the base is satisfied, the tasks will be split evenly across the two capacity providers. Using that same logic, if you specify a weight of 1 for capacityProviderA and a weight of 4 for capacityProviderB, then for every one task that’s run using capacityProviderA, four tasks would use capacityProviderB.
      - base (integer) –
        
        The base value designates how many tasks, at a minimum, to run on the specified capacity provider. Only one capacity provider in a capacity provider strategy can have a base defined. If no value is specified, the default value of 0 is used.
  - platformVersion (string) –
    
    The platform version to run your service on. A platform version is only specified for tasks that are hosted on Fargate. If one isn’t specified, the LATEST platform version is used. For more information, see Fargate Platform Versions in the Amazon Elastic Container Service Developer Guide.
  - platformFamily (string) –
    
    The operating system that your tasks in the service run on. A platform family is specified only for tasks using the Fargate launch type.
    
    All tasks that run as part of this service must use the same platformFamily value as the service (for example, LINUX).
  - taskDefinition (string) –
    
    The task definition to use for tasks in the service. This value is specified when the service is created with CreateService, and it can be modified with UpdateService.
  - deploymentConfiguration (dict) –
    
    Optional deployment parameters that control how many tasks run during the deployment and the ordering of stopping and starting tasks.
    - deploymentCircuitBreaker (dict) –
      
      Note
      The deployment circuit breaker can only be used for services using the rolling update ( ECS) deployment type.
      
      The deployment circuit breaker determines whether a service deployment will fail if the service can’t reach a steady state. If you use the deployment circuit breaker, a service deployment will transition to a failed state and stop launching new tasks. If you use the rollback option, when a service deployment fails, the service is rolled back to the last deployment that completed successfully. For more information, see Rolling update in the Amazon Elastic Container Service Developer Guide
      - enable (boolean) –
        
        Determines whether to use the deployment circuit breaker logic for the service.
      - rollback (boolean) –
        
        Determines whether to configure Amazon ECS to roll back the service if a service deployment fails. If rollback is on, when a service deployment fails, the service is rolled back to the last deployment that completed successfully.
    - maximumPercent (integer) –
      
      If a service is using the rolling update ( ECS) deployment type, the maximumPercent parameter represents an upper limit on the number of your service’s tasks that are allowed in the RUNNING or PENDING state during a deployment, as a percentage of the desiredCount (rounded down to the nearest integer). This parameter enables you to define the deployment batch size. For example, if your service is using the REPLICA service scheduler and has a desiredCount of four tasks and a maximumPercent value of 200%, the scheduler may start four new tasks before stopping the four older tasks (provided that the cluster resources required to do this are available). The default maximumPercent value for a service using the REPLICA service scheduler is 200%.
      
      If a service is using either the blue/green ( CODE_DEPLOY) or EXTERNAL deployment types and tasks that use the EC2 launch type, the maximum percent value is set to the default value and is used to define the upper limit on the number of the tasks in the service that remain in the RUNNING state while the container instances are in the DRAINING state. If the tasks in the service use the Fargate launch type, the maximum percent value is not used, although it is returned when describing your service.
    - minimumHealthyPercent (integer) –
      
      If a service is using the rolling update ( ECS) deployment type, the minimumHealthyPercent represents a lower limit on the number of your service’s tasks that must remain in the RUNNING state during a deployment, as a percentage of the desiredCount (rounded up to the nearest integer). This parameter enables you to deploy without using additional cluster capacity. For example, if your service has a desiredCount of four tasks and a minimumHealthyPercent of 50%, the service scheduler may stop two existing tasks to free up cluster capacity before starting two new tasks.
      
      For services that do not use a load balancer, the following should be noted:
      - A service is considered healthy if all essential containers within the tasks in the service pass their health checks.
      - If a task has no essential containers with a health check defined, the service scheduler will wait for 40 seconds after a task reaches a RUNNING state before the task is counted towards the minimum healthy percent total.
      - If a task has one or more essential containers with a health check defined, the service scheduler will wait for the task to reach a healthy status before counting it towards the minimum healthy percent total. A task is considered healthy when all essential containers within the task have passed their health checks. The amount of time the service scheduler can wait for is determined by the container health check settings.
      For services are that do use a load balancer, the following should be noted:
      - If a task has no essential containers with a health check defined, the service scheduler will wait for the load balancer target group health check to return a healthy status before counting the task towards the minimum healthy percent total.
      - If a task has an essential container with a health check defined, the service scheduler will wait for both the task to reach a healthy status and the load balancer target group health check to return a healthy status before counting the task towards the minimum healthy percent total.
      If a service is using either the blue/green ( CODE_DEPLOY) or EXTERNAL deployment types and is running tasks that use the EC2 launch type, the minimum healthy percent value is set to the default value and is used to define the lower limit on the number of the tasks in the service that remain in the RUNNING state while the container instances are in the DRAINING state. If a service is using either the blue/green ( CODE_DEPLOY) or EXTERNAL deployment types and is running tasks that use the Fargate launch type, the minimum healthy percent value is not used, although it is returned when describing your service.
    - alarms (dict) –
      
      Information about the CloudWatch alarms.
      - alarmNames (list) –
        
        One or more CloudWatch alarm names. Use a “,” to separate the alarms.
        
        (string) –
      - enable (boolean) –
        
        Determines whether to use the CloudWatch alarm option in the service deployment process.
      - rollback (boolean) –
        
        Determines whether to configure Amazon ECS to roll back the service if a service deployment fails. If rollback is used, when a service deployment fails, the service is rolled back to the last deployment that completed successfully.
  - taskSets (list) –
    
    Information about a set of Amazon ECS tasks in either an CodeDeploy or an EXTERNAL deployment. An Amazon ECS task set includes details such as the desired number of tasks, how many tasks are running, and whether the task set serves production traffic.
    - (dict) –
      
      Information about a set of Amazon ECS tasks in either an CodeDeploy or an EXTERNAL deployment. An Amazon ECS task set includes details such as the desired number of tasks, how many tasks are running, and whether the task set serves production traffic.
      - id (string) –
        
        The ID of the task set.
      - taskSetArn (string) –
        
        The Amazon Resource Name (ARN) of the task set.
      - serviceArn (string) –
        
        The Amazon Resource Name (ARN) of the service the task set exists in.
      - clusterArn (string) –
        
        The Amazon Resource Name (ARN) of the cluster that the service that hosts the task set exists in.
      - startedBy (string) –
        
        The tag specified when a task set is started. If an CodeDeploy deployment created the task set, the startedBy parameter is CODE_DEPLOY. If an external deployment created the task set, the startedBy field isn’t used.
      - externalId (string) –
        
        The external ID associated with the task set.
        
        If an CodeDeploy deployment created a task set, the externalId parameter contains the CodeDeploy deployment ID.
        
        If a task set is created for an external deployment and is associated with a service discovery registry, the externalId parameter contains the ECS_TASK_SET_EXTERNAL_ID Cloud Map attribute.
      - status (string) –
        
        The status of the task set. The following describes each state.
        
        PRIMARY
        
        The task set is serving production traffic.
        
        ACTIVE
        
        The task set isn’t serving production traffic.
        
        DRAINING
        
        The tasks in the task set are being stopped, and their corresponding targets are being deregistered from their target group.
      - taskDefinition (string) –
        
        The task definition that the task set is using.
      - computedDesiredCount (integer) –
        
        The computed desired count for the task set. This is calculated by multiplying the service’s desiredCount by the task set’s scale percentage. The result is always rounded up. For example, if the computed desired count is 1.2, it rounds up to 2 tasks.
      - pendingCount (integer) –
        
        The number of tasks in the task set that are in the PENDING status during a deployment. A task in the PENDING state is preparing to enter the RUNNING state. A task set enters the PENDING status when it launches for the first time or when it’s restarted after being in the STOPPED state.
      - runningCount (integer) –
        
        The number of tasks in the task set that are in the RUNNING status during a deployment. A task in the RUNNING state is running and ready for use.
      - createdAt (datetime) –
        
        The Unix timestamp for the time when the task set was created.
      - updatedAt (datetime) –
        
        The Unix timestamp for the time when the task set was last updated.
      - launchType (string) –
        
        The launch type the tasks in the task set are using. For more information, see Amazon ECS launch types in the Amazon Elastic Container Service Developer Guide.
      - capacityProviderStrategy (list) –
        
        The capacity provider strategy that are associated with the task set.
        
        (dict) –
        
        The details of a capacity provider strategy. A capacity provider strategy can be set when using the RunTask or CreateCluster APIs or as the default capacity provider strategy for a cluster with the CreateCluster API.
        
        Only capacity providers that are already associated with a cluster and have an ACTIVE or UPDATING status can be used in a capacity provider strategy. The PutClusterCapacityProviders API is used to associate a capacity provider with a cluster.
        
        If specifying a capacity provider that uses an Auto Scaling group, the capacity provider must already be created. New Auto Scaling group capacity providers can be created with the CreateCapacityProvider API operation.
        
        To use a Fargate capacity provider, specify either the FARGATE or FARGATE_SPOT capacity providers. The Fargate capacity providers are available to all accounts and only need to be associated with a cluster to be used in a capacity provider strategy.
        
        A capacity provider strategy may contain a maximum of 6 capacity providers.
        
        capacityProvider (string) –
        
        The short name of the capacity provider.
        
        weight (integer) –
        
        The weight value designates the relative percentage of the total number of tasks launched that should use the specified capacity provider. The weight value is taken into consideration after the base value, if defined, is satisfied.
        
        If no weight value is specified, the default value of 0 is used. When multiple capacity providers are specified within a capacity provider strategy, at least one of the capacity providers must have a weight value greater than zero and any capacity providers with a weight of 0 can’t be used to place tasks. If you specify multiple capacity providers in a strategy that all have a weight of 0, any RunTask or CreateService actions using the capacity provider strategy will fail.
        
        An example scenario for using weights is defining a strategy that contains two capacity providers and both have a weight of 1, then when the base is satisfied, the tasks will be split evenly across the two capacity providers. Using that same logic, if you specify a weight of 1 for capacityProviderA and a weight of 4 for capacityProviderB, then for every one task that’s run using capacityProviderA, four tasks would use capacityProviderB.
        
        base (integer) –
        
        The base value designates how many tasks, at a minimum, to run on the specified capacity provider. Only one capacity provider in a capacity provider strategy can have a base defined. If no value is specified, the default value of 0 is used.
      - platformVersion (string) –
        
        The Fargate platform version where the tasks in the task set are running. A platform version is only specified for tasks run on Fargate. For more information, see Fargate platform versions in the Amazon Elastic Container Service Developer Guide.
      - platformFamily (string) –
        
        The operating system that your tasks in the set are running on. A platform family is specified only for tasks that use the Fargate launch type.
        
        All tasks in the set must have the same value.
      - networkConfiguration (dict) –
        
        The network configuration for the task set.
        
        awsvpcConfiguration (dict) –
        
        The VPC subnets and security groups that are associated with a task.
        
        Note
        All specified subnets and security groups must be from the same VPC.
        
        subnets (list) –
        
        The IDs of the subnets associated with the task or service. There’s a limit of 16 subnets that can be specified per AwsVpcConfiguration.
        
        Note
        All specified subnets must be from the same VPC.
        
        (string) –
        
        securityGroups (list) –
        
        The IDs of the security groups associated with the task or service. If you don’t specify a security group, the default security group for the VPC is used. There’s a limit of 5 security groups that can be specified per AwsVpcConfiguration.
        
        Note
        All specified security groups must be from the same VPC.
        
        (string) –
        
        assignPublicIp (string) –
        
        Whether the task’s elastic network interface receives a public IP address. The default value is DISABLED.
      - loadBalancers (list) –
        
        Details on a load balancer that are used with a task set.
        
        (dict) –
        
        The load balancer configuration to use with a service or task set.
        
        When you add, update, or remove a load balancer configuration, Amazon ECS starts a new deployment with the updated Elastic Load Balancing configuration. This causes tasks to register to and deregister from load balancers.
        
        We recommend that you verify this on a test environment before you update the Elastic Load Balancing configuration.
        
        A service-linked role is required for services that use multiple target groups. For more information, see Using service-linked roles in the Amazon Elastic Container Service Developer Guide.
        
        targetGroupArn (string) –
        
        The full Amazon Resource Name (ARN) of the Elastic Load Balancing target group or groups associated with a service or task set.
        
        A target group ARN is only specified when using an Application Load Balancer or Network Load Balancer. If you’re using a Classic Load Balancer, omit the target group ARN.
        
        For services using the ECS deployment controller, you can specify one or multiple target groups. For more information, see Registering multiple target groups with a service in the Amazon Elastic Container Service Developer Guide.
        
        For services using the CODE_DEPLOY deployment controller, you’re required to define two target groups for the load balancer. For more information, see Blue/green deployment with CodeDeploy in the Amazon Elastic Container Service Developer Guide.
        
        Warning
        If your service’s task definition uses the awsvpc network mode, you must choose ip as the target type, not instance. Do this when creating your target groups because tasks that use the awsvpc network mode are associated with an elastic network interface, not an Amazon EC2 instance. This network mode is required for the Fargate launch type.
        
        loadBalancerName (string) –
        
        The name of the load balancer to associate with the Amazon ECS service or task set.
        
        A load balancer name is only specified when using a Classic Load Balancer. If you are using an Application Load Balancer or a Network Load Balancer the load balancer name parameter should be omitted.
        
        containerName (string) –
        
        The name of the container (as it appears in a container definition) to associate with the load balancer.
        
        containerPort (integer) –
        
        The port on the container to associate with the load balancer. This port must correspond to a containerPort in the task definition the tasks in the service are using. For tasks that use the EC2 launch type, the container instance they’re launched on must allow ingress traffic on the hostPort of the port mapping.
      - serviceRegistries (list) –
        
        The details for the service discovery registries to assign to this task set. For more information, see Service discovery.
        
        (dict) –
        
        The details for the service registry.
        
        Each service may be associated with one service registry. Multiple service registries for each service are not supported.
        
        When you add, update, or remove the service registries configuration, Amazon ECS starts a new deployment. New tasks are registered and deregistered to the updated service registry configuration.
        
        registryArn (string) –
        
        The Amazon Resource Name (ARN) of the service registry. The currently supported service registry is Cloud Map. For more information, see CreateService.
        
        port (integer) –
        
        The port value used if your service discovery service specified an SRV record. This field might be used if both the awsvpc network mode and SRV records are used.
        
        containerName (string) –
        
        The container name value to be used for your service discovery service. It’s already specified in the task definition. If the task definition that your service task specifies uses the bridge or host network mode, you must specify a containerName and containerPort combination from the task definition. If the task definition that your service task specifies uses the awsvpc network mode and a type SRV DNS record is used, you must specify either a containerName and containerPort combination or a port value. However, you can’t specify both.
        
        containerPort (integer) –
        
        The port value to be used for your service discovery service. It’s already specified in the task definition. If the task definition your service task specifies uses the bridge or host network mode, you must specify a containerName and containerPort combination from the task definition. If the task definition your service task specifies uses the awsvpc network mode and a type SRV DNS record is used, you must specify either a containerName and containerPort combination or a port value. However, you can’t specify both.
      - scale (dict) –
        
        A floating-point percentage of your desired number of tasks to place and keep running in the task set.
        
        value (float) –
        
        The value, specified as a percent total of a service’s desiredCount, to scale the task set. Accepted values are numbers between 0 and 100.
        
        unit (string) –
        
        The unit of measure for the scale value.
      - stabilityStatus (string) –
        
        The stability status. This indicates whether the task set has reached a steady state. If the following conditions are met, the task set are in STEADY_STATE:
        
        The task runningCount is equal to the computedDesiredCount.
        
        The pendingCount is 0.
        
        There are no tasks that are running on container instances in the DRAINING status.
        
        All tasks are reporting a healthy status from the load balancers, service discovery, and container health checks.
        
        If any of those conditions aren’t met, the stability status returns STABILIZING.
      - stabilityStatusAt (datetime) –
        
        The Unix timestamp for the time when the task set stability status was retrieved.
      - tags (list) –
        
        The metadata that you apply to the task set to help you categorize and organize them. Each tag consists of a key and an optional value. You define both.
        
        The following basic restrictions apply to tags:
        
        Maximum number of tags per resource - 50
        
        For each resource, each tag key must be unique, and each tag key can have only one value.
        
        Maximum key length - 128 Unicode characters in UTF-8
        
        Maximum value length - 256 Unicode characters in UTF-8
        
        If your tagging schema is used across multiple services and resources, remember that other services may have restrictions on allowed characters. Generally allowed characters are: letters, numbers, and spaces representable in UTF-8, and the following characters: + - = . _ : / @.
        
        Tag keys and values are case-sensitive.
        
        Do not use aws:, AWS:, or any upper or lowercase combination of such as a prefix for either keys or values as it is reserved for Amazon Web Services use. You cannot edit or delete tag keys or values with this prefix. Tags with this prefix do not count against your tags per resource limit.
        
        (dict) –
        
        The metadata that you apply to a resource to help you categorize and organize them. Each tag consists of a key and an optional value. You define them.
        
        The following basic restrictions apply to tags:
        
        Maximum number of tags per resource - 50
        
        For each resource, each tag key must be unique, and each tag key can have only one value.
        
        Maximum key length - 128 Unicode characters in UTF-8
        
        Maximum value length - 256 Unicode characters in UTF-8
        
        If your tagging schema is used across multiple services and resources, remember that other services may have restrictions on allowed characters. Generally allowed characters are: letters, numbers, and spaces representable in UTF-8, and the following characters: + - = . _ : / @.
        
        Tag keys and values are case-sensitive.
        
        Do not use aws:, AWS:, or any upper or lowercase combination of such as a prefix for either keys or values as it is reserved for Amazon Web Services use. You cannot edit or delete tag keys or values with this prefix. Tags with this prefix do not count against your tags per resource limit.
        
        key (string) –
        
        One part of a key-value pair that make up a tag. A key is a general label that acts like a category for more specific tag values.
        
        value (string) –
        
        The optional part of a key-value pair that make up a tag. A value acts as a descriptor within a tag category (key).
  - deployments (list) –
    
    The current state of deployments for the service.
    - (dict) –
      
      The details of an Amazon ECS service deployment. This is used only when a service uses the ECS deployment controller type.
      - id (string) –
        
        The ID of the deployment.
      - status (string) –
        
        The status of the deployment. The following describes each state.
        
        PRIMARY
        
        The most recent deployment of a service.
        
        ACTIVE
        
        A service deployment that still has running tasks, but are in the process of being replaced with a new PRIMARY deployment.
        
        INACTIVE
        
        A deployment that has been completely replaced.
      - taskDefinition (string) –
        
        The most recent task definition that was specified for the tasks in the service to use.
      - desiredCount (integer) –
        
        The most recent desired count of tasks that was specified for the service to deploy or maintain.
      - pendingCount (integer) –
        
        The number of tasks in the deployment that are in the PENDING status.
      - runningCount (integer) –
        
        The number of tasks in the deployment that are in the RUNNING status.
      - failedTasks (integer) –
        
        The number of consecutively failed tasks in the deployment. A task is considered a failure if the service scheduler can’t launch the task, the task doesn’t transition to a RUNNING state, or if it fails any of its defined health checks and is stopped.
        
        Note
        Once a service deployment has one or more successfully running tasks, the failed task count resets to zero and stops being evaluated.
      - createdAt (datetime) –
        
        The Unix timestamp for the time when the service deployment was created.
      - updatedAt (datetime) –
        
        The Unix timestamp for the time when the service deployment was last updated.
      - capacityProviderStrategy (list) –
        
        The capacity provider strategy that the deployment is using.
        
        (dict) –
        
        The details of a capacity provider strategy. A capacity provider strategy can be set when using the RunTask or CreateCluster APIs or as the default capacity provider strategy for a cluster with the CreateCluster API.
        
        Only capacity providers that are already associated with a cluster and have an ACTIVE or UPDATING status can be used in a capacity provider strategy. The PutClusterCapacityProviders API is used to associate a capacity provider with a cluster.
        
        If specifying a capacity provider that uses an Auto Scaling group, the capacity provider must already be created. New Auto Scaling group capacity providers can be created with the CreateCapacityProvider API operation.
        
        To use a Fargate capacity provider, specify either the FARGATE or FARGATE_SPOT capacity providers. The Fargate capacity providers are available to all accounts and only need to be associated with a cluster to be used in a capacity provider strategy.
        
        A capacity provider strategy may contain a maximum of 6 capacity providers.
        
        capacityProvider (string) –
        
        The short name of the capacity provider.
        
        weight (integer) –
        
        The weight value designates the relative percentage of the total number of tasks launched that should use the specified capacity provider. The weight value is taken into consideration after the base value, if defined, is satisfied.
        
        If no weight value is specified, the default value of 0 is used. When multiple capacity providers are specified within a capacity provider strategy, at least one of the capacity providers must have a weight value greater than zero and any capacity providers with a weight of 0 can’t be used to place tasks. If you specify multiple capacity providers in a strategy that all have a weight of 0, any RunTask or CreateService actions using the capacity provider strategy will fail.
        
        An example scenario for using weights is defining a strategy that contains two capacity providers and both have a weight of 1, then when the base is satisfied, the tasks will be split evenly across the two capacity providers. Using that same logic, if you specify a weight of 1 for capacityProviderA and a weight of 4 for capacityProviderB, then for every one task that’s run using capacityProviderA, four tasks would use capacityProviderB.
        
        base (integer) –
        
        The base value designates how many tasks, at a minimum, to run on the specified capacity provider. Only one capacity provider in a capacity provider strategy can have a base defined. If no value is specified, the default value of 0 is used.
      - launchType (string) –
        
        The launch type the tasks in the service are using. For more information, see Amazon ECS Launch Types in the Amazon Elastic Container Service Developer Guide.
      - platformVersion (string) –
        
        The platform version that your tasks in the service run on. A platform version is only specified for tasks using the Fargate launch type. If one isn’t specified, the LATEST platform version is used. For more information, see Fargate Platform Versions in the Amazon Elastic Container Service Developer Guide.
      - platformFamily (string) –
        
        The operating system that your tasks in the service, or tasks are running on. A platform family is specified only for tasks using the Fargate launch type.
        
        All tasks that run as part of this service must use the same platformFamily value as the service, for example, LINUX..
      - networkConfiguration (dict) –
        
        The VPC subnet and security group configuration for tasks that receive their own elastic network interface by using the awsvpc networking mode.
        
        awsvpcConfiguration (dict) –
        
        The VPC subnets and security groups that are associated with a task.
        
        Note
        All specified subnets and security groups must be from the same VPC.
        
        subnets (list) –
        
        The IDs of the subnets associated with the task or service. There’s a limit of 16 subnets that can be specified per AwsVpcConfiguration.
        
        Note
        All specified subnets must be from the same VPC.
        
        (string) –
        
        securityGroups (list) –
        
        The IDs of the security groups associated with the task or service. If you don’t specify a security group, the default security group for the VPC is used. There’s a limit of 5 security groups that can be specified per AwsVpcConfiguration.
        
        Note
        All specified security groups must be from the same VPC.
        
        (string) –
        
        assignPublicIp (string) –
        
        Whether the task’s elastic network interface receives a public IP address. The default value is DISABLED.
      - rolloutState (string) –
        
        Note
        The rolloutState of a service is only returned for services that use the rolling update ( ECS) deployment type that aren’t behind a Classic Load Balancer.
        
        The rollout state of the deployment. When a service deployment is started, it begins in an IN_PROGRESS state. When the service reaches a steady state, the deployment transitions to a COMPLETED state. If the service fails to reach a steady state and circuit breaker is turned on, the deployment transitions to a FAILED state. A deployment in FAILED state doesn’t launch any new tasks. For more information, see DeploymentCircuitBreaker.
      - rolloutStateReason (string) –
        
        A description of the rollout state of a deployment.
      - serviceConnectConfiguration (dict) –
        
        The details of the Service Connect configuration that’s used by this deployment. Compare the configuration between multiple deployments when troubleshooting issues with new deployments.
        
        The configuration for this service to discover and connect to services, and be discovered by, and connected from, other services within a namespace.
        
        Tasks that run in a namespace can use short names to connect to services in the namespace. Tasks can connect to services across all of the clusters in the namespace. Tasks connect through a managed proxy container that collects logs and metrics for increased visibility. Only the tasks that Amazon ECS services create are supported with Service Connect. For more information, see Service Connect in the Amazon Elastic Container Service Developer Guide.
        
        enabled (boolean) –
        
        Specifies whether to use Service Connect with this service.
        
        namespace (string) –
        
        The namespace name or full Amazon Resource Name (ARN) of the Cloud Map namespace for use with Service Connect. The namespace must be in the same Amazon Web Services Region as the Amazon ECS service and cluster. The type of namespace doesn’t affect Service Connect. For more information about Cloud Map, see Working with Services in the Cloud Map Developer Guide.
        
        services (list) –
        
        The list of Service Connect service objects. These are names and aliases (also known as endpoints) that are used by other Amazon ECS services to connect to this service.
        
        This field is not required for a “client” Amazon ECS service that’s a member of a namespace only to connect to other services within the namespace. An example of this would be a frontend application that accepts incoming requests from either a load balancer that’s attached to the service or by other means.
        
        An object selects a port from the task definition, assigns a name for the Cloud Map service, and a list of aliases (endpoints) and ports for client applications to refer to this service.
        
        (dict) –
        
        The Service Connect service object configuration. For more information, see Service Connect in the Amazon Elastic Container Service Developer Guide.
        
        portName (string) –
        
        The portName must match the name of one of the portMappings from all the containers in the task definition of this Amazon ECS service.
        
        discoveryName (string) –
        
        The discoveryName is the name of the new Cloud Map service that Amazon ECS creates for this Amazon ECS service. This must be unique within the Cloud Map namespace. The name can contain up to 64 characters. The name can include lowercase letters, numbers, underscores (_), and hyphens (-). The name can’t start with a hyphen.
        
        If the discoveryName isn’t specified, the port mapping name from the task definition is used in portName.namespace.
        
        clientAliases (list) –
        
        The list of client aliases for this Service Connect service. You use these to assign names that can be used by client applications. The maximum number of client aliases that you can have in this list is 1.
        
        Each alias (“endpoint”) is a fully-qualified name and port number that other Amazon ECS tasks (“clients”) can use to connect to this service.
        
        Each name and port mapping must be unique within the namespace.
        
        For each ServiceConnectService, you must provide at least one clientAlias with one port.
        
        (dict) –
        
        Each alias (“endpoint”) is a fully-qualified name and port number that other tasks (“clients”) can use to connect to this service.
        
        Each name and port mapping must be unique within the namespace.
        
        Tasks that run in a namespace can use short names to connect to services in the namespace. Tasks can connect to services across all of the clusters in the namespace. Tasks connect through a managed proxy container that collects logs and metrics for increased visibility. Only the tasks that Amazon ECS services create are supported with Service Connect. For more information, see Service Connect in the Amazon Elastic Container Service Developer Guide.
        
        port (integer) –
        
        The listening port number for the Service Connect proxy. This port is available inside of all of the tasks within the same namespace.
        
        To avoid changing your applications in client Amazon ECS services, set this to the same port that the client application uses by default. For more information, see Service Connect in the Amazon Elastic Container Service Developer Guide.
        
        dnsName (string) –
        
        The dnsName is the name that you use in the applications of client tasks to connect to this service. The name must be a valid DNS name but doesn’t need to be fully-qualified. The name can include up to 127 characters. The name can include lowercase letters, numbers, underscores (_), hyphens (-), and periods (.). The name can’t start with a hyphen.
        
        If this parameter isn’t specified, the default value of discoveryName.namespace is used. If the discoveryName isn’t specified, the port mapping name from the task definition is used in portName.namespace.
        
        To avoid changing your applications in client Amazon ECS services, set this to the same name that the client application uses by default. For example, a few common names are database, db, or the lowercase name of a database, such as mysql or redis. For more information, see Service Connect in the Amazon Elastic Container Service Developer Guide.
        
        ingressPortOverride (integer) –
        
        The port number for the Service Connect proxy to listen on.
        
        Use the value of this field to bypass the proxy for traffic on the port number specified in the named portMapping in the task definition of this application, and then use it in your VPC security groups to allow traffic into the proxy for this Amazon ECS service.
        
        In awsvpc mode and Fargate, the default value is the container port number. The container port number is in the portMapping in the task definition. In bridge mode, the default value is the ephemeral port of the Service Connect proxy.
        
        logConfiguration (dict) –
        
        The log configuration for the container. This parameter maps to LogConfig in the Create a container section of the Docker Remote API and the --log-driver option to docker run.
        
        By default, containers use the same logging driver that the Docker daemon uses. However, the container might use a different logging driver than the Docker daemon by specifying a log driver configuration in the container definition. For more information about the options for different supported log drivers, see Configure logging drivers in the Docker documentation.
        
        Understand the following when specifying a log configuration for your containers.
        
        Amazon ECS currently supports a subset of the logging drivers available to the Docker daemon (shown in the valid values below). Additional log drivers may be available in future releases of the Amazon ECS container agent.
        
        This parameter requires version 1.18 of the Docker Remote API or greater on your container instance.
        
        For tasks that are hosted on Amazon EC2 instances, the Amazon ECS container agent must register the available logging drivers with the ECS_AVAILABLE_LOGGING_DRIVERS environment variable before containers placed on that instance can use these log configuration options. For more information, see Amazon ECS container agent configuration in the Amazon Elastic Container Service Developer Guide.
        
        For tasks that are on Fargate, because you don’t have access to the underlying infrastructure your tasks are hosted on, any additional software needed must be installed outside of the task. For example, the Fluentd output aggregators or a remote host running Logstash to send Gelf logs to.
        
        logDriver (string) –
        
        The log driver to use for the container.
        
        For tasks on Fargate, the supported log drivers are awslogs, splunk, and awsfirelens.
        
        For tasks hosted on Amazon EC2 instances, the supported log drivers are awslogs, fluentd, gelf, json-file, journald, logentries, syslog, splunk, and awsfirelens.
        
        For more information about using the awslogs log driver, see Using the awslogs log driver in the Amazon Elastic Container Service Developer Guide.
        
        For more information about using the awsfirelens log driver, see Custom log routing in the Amazon Elastic Container Service Developer Guide.
        
        Note
        If you have a custom driver that isn’t listed, you can fork the Amazon ECS container agent project that’s available on GitHub and customize it to work with that driver. We encourage you to submit pull requests for changes that you would like to have included. However, we don’t currently provide support for running modified copies of this software.
        
        options (dict) –
        
        The configuration options to send to the log driver. This parameter requires version 1.19 of the Docker Remote API or greater on your container instance. To check the Docker Remote API version on your container instance, log in to your container instance and run the following command: sudo docker version --format '{{.Server.APIVersion}}'
        
        (string) –
        
        (string) –
        
        secretOptions (list) –
        
        The secrets to pass to the log configuration. For more information, see Specifying sensitive data in the Amazon Elastic Container Service Developer Guide.
        
        (dict) –
        
        An object representing the secret to expose to your container. Secrets can be exposed to a container in the following ways:
        
        To inject sensitive data into your containers as environment variables, use the secrets container definition parameter.
        
        To reference sensitive information in the log configuration of a container, use the secretOptions container definition parameter.
        
        For more information, see Specifying sensitive data in the Amazon Elastic Container Service Developer Guide.
        
        name (string) –
        
        The name of the secret.
        
        valueFrom (string) –
        
        The secret to expose to the container. The supported values are either the full ARN of the Secrets Manager secret or the full ARN of the parameter in the SSM Parameter Store.
        
        For information about the require Identity and Access Management permissions, see Required IAM permissions for Amazon ECS secrets (for Secrets Manager) or Required IAM permissions for Amazon ECS secrets (for Systems Manager Parameter store) in the Amazon Elastic Container Service Developer Guide.
        
        Note
        If the SSM Parameter Store parameter exists in the same Region as the task you’re launching, then you can use either the full ARN or name of the parameter. If the parameter exists in a different Region, then the full ARN must be specified.
      - serviceConnectResources (list) –
        
        The list of Service Connect resources that are associated with this deployment. Each list entry maps a discovery name to a Cloud Map service name.
        
        (dict) –
        
        The Service Connect resource. Each configuration maps a discovery name to a Cloud Map service name. The data is stored in Cloud Map as part of the Service Connect configuration for each discovery name of this Amazon ECS service.
        
        A task can resolve the dnsName for each of the clientAliases of a service. However a task can’t resolve the discovery names. If you want to connect to a service, refer to the ServiceConnectConfiguration of that service for the list of clientAliases that you can use.
        
        discoveryName (string) –
        
        The discovery name of this Service Connect resource.
        
        The discoveryName is the name of the new Cloud Map service that Amazon ECS creates for this Amazon ECS service. This must be unique within the Cloud Map namespace. The name can contain up to 64 characters. The name can include lowercase letters, numbers, underscores (_), and hyphens (-). The name can’t start with a hyphen.
        
        If the discoveryName isn’t specified, the port mapping name from the task definition is used in portName.namespace.
        
        discoveryArn (string) –
        
        The Amazon Resource Name (ARN) for the namespace in Cloud Map that matches the discovery name for this Service Connect resource. You can use this ARN in other integrations with Cloud Map. However, Service Connect can’t ensure connectivity outside of Amazon ECS.
  - roleArn (string) –
    
    The ARN of the IAM role that’s associated with the service. It allows the Amazon ECS container agent to register container instances with an Elastic Load Balancing load balancer.
  - events (list) –
    
    The event stream for your service. A maximum of 100 of the latest events are displayed.
    - (dict) –
      
      The details for an event that’s associated with a service.
      - id (string) –
        
        The ID string for the event.
      - createdAt (datetime) –
        
        The Unix timestamp for the time when the event was triggered.
      - message (string) –
        
        The event message.
  - createdAt (datetime) –
    
    The Unix timestamp for the time when the service was created.
  - placementConstraints (list) –
    
    The placement constraints for the tasks in the service.
    - (dict) –
      
      An object representing a constraint on task placement. For more information, see Task placement constraints in the Amazon Elastic Container Service Developer Guide.
      
      Note
      If you’re using the Fargate launch type, task placement constraints aren’t supported.
      - type (string) –
        
        The type of constraint. Use distinctInstance to ensure that each task in a particular group is running on a different container instance. Use memberOf to restrict the selection to a group of valid candidates.
      - expression (string) –
        
        A cluster query language expression to apply to the constraint. The expression can have a maximum length of 2000 characters. You can’t specify an expression if the constraint type is distinctInstance. For more information, see Cluster query language in the Amazon Elastic Container Service Developer Guide.
  - placementStrategy (list) –
    
    The placement strategy that determines how tasks for the service are placed.
    - (dict) –
      
      The task placement strategy for a task or service. For more information, see Task placement strategies in the Amazon Elastic Container Service Developer Guide.
      - type (string) –
        
        The type of placement strategy. The random placement strategy randomly places tasks on available candidates. The spread placement strategy spreads placement across available candidates evenly based on the field parameter. The binpack strategy places tasks on available candidates that have the least available amount of the resource that’s specified with the field parameter. For example, if you binpack on memory, a task is placed on the instance with the least amount of remaining memory but still enough to run the task.
      - field (string) –
        
        The field to apply the placement strategy against. For the spread placement strategy, valid values are instanceId (or host, which has the same effect), or any platform or custom attribute that’s applied to a container instance, such as attribute:ecs.availability-zone. For the binpack placement strategy, valid values are cpu and memory. For the random placement strategy, this field is not used.
  - networkConfiguration (dict) –
    
    The VPC subnet and security group configuration for tasks that receive their own elastic network interface by using the awsvpc networking mode.
    - awsvpcConfiguration (dict) –
      
      The VPC subnets and security groups that are associated with a task.
      
      Note
      All specified subnets and security groups must be from the same VPC.
      - subnets (list) –
        
        The IDs of the subnets associated with the task or service. There’s a limit of 16 subnets that can be specified per AwsVpcConfiguration.
        
        Note
        All specified subnets must be from the same VPC.
        
        (string) –
      - securityGroups (list) –
        
        The IDs of the security groups associated with the task or service. If you don’t specify a security group, the default security group for the VPC is used. There’s a limit of 5 security groups that can be specified per AwsVpcConfiguration.
        
        Note
        All specified security groups must be from the same VPC.
        
        (string) –
      - assignPublicIp (string) –
        
        Whether the task’s elastic network interface receives a public IP address. The default value is DISABLED.
  - healthCheckGracePeriodSeconds (integer) –
    
    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.
  - schedulingStrategy (string) –
    
    The scheduling strategy to use for the service. For more information, see Services.
    
    There are two service scheduler strategies available.
    - REPLICA-The replica scheduling strategy places and maintains the desired number of tasks across your cluster. By default, the service scheduler spreads tasks across Availability Zones. You can use task placement strategies and constraints to customize task placement decisions.
    - DAEMON-The daemon scheduling strategy deploys exactly one task on each active container instance. This task meets all of the task placement constraints that you specify in your cluster. The service scheduler also evaluates the task placement constraints for running tasks. It stop tasks that don’t meet the placement constraints.
    Note
    Fargate tasks don’t support the DAEMON scheduling strategy.
  - deploymentController (dict) –
    
    The deployment controller type the service is using.
    - type (string) –
      
      The deployment controller type to use.
      
      There are three deployment controller types available:
      
      ECS
      
      The rolling update ( ECS) deployment type involves replacing the current running version of the container with the latest version. The number of containers Amazon ECS adds or removes from the service during a rolling update is controlled by adjusting the minimum and maximum number of healthy tasks allowed during a service deployment, as specified in the DeploymentConfiguration.
      
      CODE_DEPLOY
      
      The blue/green ( CODE_DEPLOY) deployment type uses the blue/green deployment model powered by CodeDeploy, which allows you to verify a new deployment of a service before sending production traffic to it.
      
      EXTERNAL
      
      The external ( EXTERNAL) deployment type enables you to use any third-party deployment controller for full control over the deployment process for an Amazon ECS service.
  - tags (list) –
    
    The metadata that you apply to the service to help you categorize and organize them. Each tag consists of a key and an optional value. You define bot the key and value.
    
    The following basic restrictions apply to tags:
    - Maximum number of tags per resource - 50
    - For each resource, each tag key must be unique, and each tag key can have only one value.
    - Maximum key length - 128 Unicode characters in UTF-8
    - Maximum value length - 256 Unicode characters in UTF-8
    - If your tagging schema is used across multiple services and resources, remember that other services may have restrictions on allowed characters. Generally allowed characters are: letters, numbers, and spaces representable in UTF-8, and the following characters: + - = . _ : / @.
    - Tag keys and values are case-sensitive.
    - Do not use aws:, AWS:, or any upper or lowercase combination of such as a prefix for either keys or values as it is reserved for Amazon Web Services use. You cannot edit or delete tag keys or values with this prefix. Tags with this prefix do not count against your tags per resource limit.
    - (dict) –
      
      The metadata that you apply to a resource to help you categorize and organize them. Each tag consists of a key and an optional value. You define them.
      
      The following basic restrictions apply to tags:
      - Maximum number of tags per resource - 50
      - For each resource, each tag key must be unique, and each tag key can have only one value.
      - Maximum key length - 128 Unicode characters in UTF-8
      - Maximum value length - 256 Unicode characters in UTF-8
      - If your tagging schema is used across multiple services and resources, remember that other services may have restrictions on allowed characters. Generally allowed characters are: letters, numbers, and spaces representable in UTF-8, and the following characters: + - = . _ : / @.
      - Tag keys and values are case-sensitive.
      - Do not use aws:, AWS:, or any upper or lowercase combination of such as a prefix for either keys or values as it is reserved for Amazon Web Services use. You cannot edit or delete tag keys or values with this prefix. Tags with this prefix do not count against your tags per resource limit.
      - key (string) –
        
        One part of a key-value pair that make up a tag. A key is a general label that acts like a category for more specific tag values.
      - value (string) –
        
        The optional part of a key-value pair that make up a tag. A value acts as a descriptor within a tag category (key).
  - createdBy (string) –
    
    The principal that created the service.
  - enableECSManagedTags (boolean) –
    
    Determines whether to use Amazon ECS managed tags for the tasks in the service. For more information, see Tagging Your Amazon ECS Resources in the Amazon Elastic Container Service Developer Guide.
  - propagateTags (string) –
    
    Determines whether to propagate the tags from the task definition or the service to the task. If no value is specified, the tags aren’t propagated.
  - enableExecuteCommand (boolean) –
    
    Determines whether the execute command functionality is turned on for the service. If true, the execute command functionality is turned on for all containers in tasks as part of the service.

Exceptions

ECS.Client.exceptions.ServerException
ECS.Client.exceptions.ClientException
ECS.Client.exceptions.InvalidParameterException
ECS.Client.exceptions.ClusterNotFoundException
ECS.Client.exceptions.UnsupportedFeatureException
ECS.Client.exceptions.PlatformUnknownException
ECS.Client.exceptions.PlatformTaskDefinitionIncompatibilityException
ECS.Client.exceptions.AccessDeniedException
ECS.Client.exceptions.NamespaceNotFoundException

Examples

This example creates a service in your default region called ecs-simple-service. The service uses the hello_world task definition and it maintains 10 copies of that task.

response = client.create_service(
    desiredCount=10,
    serviceName='ecs-simple-service',
    taskDefinition='hello_world',
)

print(response)

Expected Output:

{
    'service': {
        'clusterArn': 'arn:aws:ecs:us-east-1:012345678910:cluster/default',
        'createdAt': datetime(2016, 8, 29, 16, 13, 47, 0, 242, 0),
        'deploymentConfiguration': {
            'maximumPercent': 200,
            'minimumHealthyPercent': 100,
        },
        'deployments': [
            {
                'createdAt': datetime(2016, 8, 29, 16, 13, 47, 0, 242, 0),
                'desiredCount': 10,
                'id': 'ecs-svc/9223370564342348388',
                'pendingCount': 0,
                'runningCount': 0,
                'status': 'PRIMARY',
                'taskDefinition': 'arn:aws:ecs:us-east-1:012345678910:task-definition/hello_world:6',
                'updatedAt': datetime(2016, 8, 29, 16, 13, 47, 0, 242, 0),
            },
            {
                'createdAt': datetime(2016, 8, 29, 15, 52, 44, 0, 242, 0),
                'desiredCount': 0,
                'id': 'ecs-svc/9223370564343611322',
                'pendingCount': 0,
                'runningCount': 0,
                'status': 'ACTIVE',
                'taskDefinition': 'arn:aws:ecs:us-east-1:012345678910:task-definition/hello_world:6',
                'updatedAt': datetime(2016, 8, 29, 16, 11, 38, 0, 242, 0),
            },
        ],
        'desiredCount': 10,
        'events': [
        ],
        'loadBalancers': [
        ],
        'pendingCount': 0,
        'runningCount': 0,
        'serviceArn': 'arn:aws:ecs:us-east-1:012345678910:service/ecs-simple-service',
        'serviceName': 'ecs-simple-service',
        'status': 'ACTIVE',
        'taskDefinition': 'arn:aws:ecs:us-east-1:012345678910:task-definition/hello_world:6',
    },
    'ResponseMetadata': {
        '...': '...',
    },
}

This example creates a service in your default region called ecs-simple-service-elb. The service uses the ecs-demo task definition and it maintains 10 copies of that task. You must reference an existing load balancer in the same region by its name.

response = client.create_service(
    desiredCount=10,
    loadBalancers=[
        {
            'containerName': 'simple-app',
            'containerPort': 80,
            'loadBalancerName': 'EC2Contai-EcsElast-15DCDAURT3ZO2',
        },
    ],
    role='ecsServiceRole',
    serviceName='ecs-simple-service-elb',
    taskDefinition='console-sample-app-static',
)

print(response)

Expected Output:

{
    'service': {
        'clusterArn': 'arn:aws:ecs:us-east-1:012345678910:cluster/default',
        'createdAt': datetime(2016, 8, 29, 16, 2, 54, 0, 242, 0),
        'deploymentConfiguration': {
            'maximumPercent': 200,
            'minimumHealthyPercent': 100,
        },
        'deployments': [
            {
                'createdAt': datetime(2016, 8, 29, 16, 2, 54, 0, 242, 0),
                'desiredCount': 10,
                'id': 'ecs-svc/9223370564343000923',
                'pendingCount': 0,
                'runningCount': 0,
                'status': 'PRIMARY',
                'taskDefinition': 'arn:aws:ecs:us-east-1:012345678910:task-definition/console-sample-app-static:6',
                'updatedAt': datetime(2016, 8, 29, 16, 2, 54, 0, 242, 0),
            },
        ],
        'desiredCount': 10,
        'events': [
        ],
        'loadBalancers': [
            {
                'containerName': 'simple-app',
                'containerPort': 80,
                'loadBalancerName': 'EC2Contai-EcsElast-15DCDAURT3ZO2',
            },
        ],
        'pendingCount': 0,
        'roleArn': 'arn:aws:iam::012345678910:role/ecsServiceRole',
        'runningCount': 0,
        'serviceArn': 'arn:aws:ecs:us-east-1:012345678910:service/ecs-simple-service-elb',
        'serviceName': 'ecs-simple-service-elb',
        'status': 'ACTIVE',
        'taskDefinition': 'arn:aws:ecs:us-east-1:012345678910:task-definition/console-sample-app-static:6',
    },
    'ResponseMetadata': {
        '...': '...',
    },
}