2017/11/29 - Amazon EC2 Container Service - 17 updated api methods
Changes Amazon Elastic Container Service (Amazon ECS) released a new launch type for running containers on a serverless infrastructure. The Fargate launch type allows you to run your containerized applications without the need to provision and manage the backend infrastructure. Just register your task definition and Fargate launches the container for you.
{'cluster': {'statistics': [{'name': 'string', 'value': 'string'}]}}
Creates a new Amazon ECS cluster. By default, your account receives a default cluster when you launch your first container instance. However, you can create your own cluster with a unique name with the CreateCluster action.
Note
When you call the CreateCluster API operation, Amazon ECS attempts to create the service-linked role for your account so that required resources in other AWS services can be managed on your behalf. However, if the IAM user that makes the call does not have permissions to create the service-linked role, it is not created. For more information, see Using Service-Linked Roles for Amazon ECS in the Amazon Elastic Container Service Developer Guide .
See also: AWS API Documentation
Request Syntax
client.create_cluster(
clusterName='string'
)
string
The name of your cluster. If you do not specify a name for your cluster, you create a cluster named default . Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed.
dict
Response Syntax
{
'cluster': {
'clusterArn': 'string',
'clusterName': 'string',
'status': 'string',
'registeredContainerInstancesCount': 123,
'runningTasksCount': 123,
'pendingTasksCount': 123,
'activeServicesCount': 123,
'statistics': [
{
'name': 'string',
'value': 'string'
},
]
}
}
Response Structure
(dict) --
cluster (dict) --
The full description of your new cluster.
clusterArn (string) --
The Amazon Resource Name (ARN) that identifies the cluster. The ARN contains the arn:aws:ecs namespace, followed by the region of the cluster, the AWS account ID of the cluster owner, the cluster namespace, and then the cluster name. For example, ``arn:aws:ecs:region :012345678910 :cluster/test `` ..
clusterName (string) --
A user-generated string that you use to identify your cluster.
status (string) --
The status of the cluster. The valid values are ACTIVE or INACTIVE . ACTIVE indicates that you can register container instances with the cluster and the associated instances can accept tasks.
registeredContainerInstancesCount (integer) --
The number of container instances registered into the cluster.
runningTasksCount (integer) --
The number of tasks in the cluster that are in the RUNNING state.
pendingTasksCount (integer) --
The number of tasks in the cluster that are in the PENDING state.
activeServicesCount (integer) --
The number of services that are running on the cluster in an ACTIVE state. You can view these services with ListServices .
statistics (list) --
Additional information about your clusters that are separated by launch type, including:
runningEC2TasksCount
RunningFargateTasksCount
pendingEC2TasksCount
pendingFargateTasksCount
activeEC2ServiceCount
activeFargateServiceCount
drainingEC2ServiceCount
drainingFargateServiceCount
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
{'launchType': 'EC2 | FARGATE',
'networkConfiguration': {'awsvpcConfiguration': {'assignPublicIp': 'ENABLED | '
'DISABLED'}},
'platformVersion': 'string'}
Response {'service': {'deployments': {'launchType': 'EC2 | FARGATE',
'networkConfiguration': {'awsvpcConfiguration': {'assignPublicIp': 'ENABLED '
'| '
'DISABLED'}},
'platformVersion': 'string'},
'launchType': 'EC2 | FARGATE',
'networkConfiguration': {'awsvpcConfiguration': {'assignPublicIp': 'ENABLED '
'| '
'DISABLED'}},
'platformVersion': 'string'}}
Runs and maintains a desired number of tasks from a specified task definition. If the number of tasks running in a service drops below desiredCount , Amazon ECS spawns another copy of the task in the specified cluster. To update an existing service, see UpdateService .
In addition to maintaining the desired count of tasks in your service, you can optionally run your service behind a load balancer. The load balancer distributes 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 .
You can optionally specify a deployment configuration for your service. During a deployment, the service scheduler uses the minimumHealthyPercent and maximumPercent parameters to determine the deployment strategy. The deployment is triggered by changing the task definition or the desired count of a service with an UpdateService operation.
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 scheduler can stop two existing tasks to free up cluster capacity before starting two new tasks. Tasks for services that do not use a load balancer are considered healthy if they are in the RUNNING state. Tasks for services that do use a load balancer are considered healthy if they are in the RUNNING state and the container instance they are hosted on is reported as healthy by the load balancer. The default value for minimumHealthyPercent is 50% in the console and 100% for the AWS CLI, the AWS SDKs, and the APIs.
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 has a desiredCount of four tasks and a maximumPercent value of 200%, the scheduler can 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 maximumPercent is 200%.
When the service scheduler launches new tasks, it determines task placement in your cluster using the following logic:
Determine which of the container instances in your cluster can support your service's task definition (for example, they have the required CPU, memory, ports, and container instance attributes).
By default, the service scheduler attempts to balance tasks across Availability Zones in this manner (although you can choose a different placement strategy) with the placementStrategy parameter):
Sort the valid container instances by the fewest number of running tasks for this service in the same Availability Zone as the instance. For example, if zone A has one running service task and zones B and C each have zero, valid container instances in either zone B or C are considered optimal for placement.
Place the new service task on a valid container instance in an optimal Availability Zone (based on the previous steps), favoring container instances with the fewest number of running tasks for this service.
See also: AWS API Documentation
Request Syntax
client.create_service(
cluster='string',
serviceName='string',
taskDefinition='string',
loadBalancers=[
{
'targetGroupArn': 'string',
'loadBalancerName': 'string',
'containerName': 'string',
'containerPort': 123
},
],
desiredCount=123,
clientToken='string',
launchType='EC2'|'FARGATE',
platformVersion='string',
role='string',
deploymentConfiguration={
'maximumPercent': 123,
'minimumHealthyPercent': 123
},
placementConstraints=[
{
'type': 'distinctInstance'|'memberOf',
'expression': 'string'
},
],
placementStrategy=[
{
'type': 'random'|'spread'|'binpack',
'field': 'string'
},
],
networkConfiguration={
'awsvpcConfiguration': {
'subnets': [
'string',
],
'securityGroups': [
'string',
],
'assignPublicIp': 'ENABLED'|'DISABLED'
}
}
)
string
The short name or full Amazon Resource Name (ARN) of the cluster on which to run your service. If you do not specify a cluster, the default cluster is assumed.
string
[REQUIRED]
The name of your service. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores 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.
string
[REQUIRED]
The family and revision (family:revision ) or full ARN of the task definition to run in your service. If a revision is not specified, the latest ACTIVE revision is used.
list
A load balancer object representing the load balancer to use with your service. Currently, you are limited to one load balancer or target group per service. After you create a service, the load balancer name or target group ARN, container name, and container port specified in the service definition are immutable.
For Classic Load Balancers, this object must contain the load balancer name, the container name (as it appears in a container definition), and the container port to access from the load balancer. When a task from this service is placed on a container instance, the container instance is registered with the load balancer specified here.
For Application Load Balancers and Network Load Balancers, this object must contain the load balancer target group ARN, the container name (as it appears in a container definition), and the container port to access from the load balancer. 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 specified here.
(dict) --
Details on a load balancer that is used with a service.
targetGroupArn (string) --
The full Amazon Resource Name (ARN) of the Elastic Load Balancing target group associated with a service.
loadBalancerName (string) --
The name of a load balancer.
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 service's task definition. Your container instances must allow ingress traffic on the hostPort of the port mapping.
integer
[REQUIRED]
The number of instantiations of the specified task definition to place and keep running on your cluster.
string
Unique, case-sensitive identifier you provide to ensure the idempotency of the request. Up to 32 ASCII characters are allowed.
string
The launch type on which to run your service.
string
The platform version on which to run your service. If one is not specified, the latest version is used by default.
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 does not 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 by default for your service unless you specify a role here. The service-linked role is required if your task definition uses the awsvpc network mode, in which case you should not 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 .
dict
Optional deployment parameters that control how many tasks run during the deployment and the ordering of stopping and starting tasks.
maximumPercent (integer) --
The upper limit (as a percentage of the service's desiredCount ) of the number of tasks that are allowed in the RUNNING or PENDING state in a service during a deployment. The maximum number of tasks during a deployment is the desiredCount multiplied by maximumPercent /100, rounded down to the nearest integer value.
minimumHealthyPercent (integer) --
The lower limit (as a percentage of the service's desiredCount ) of the number of running tasks that must remain in the RUNNING state in a service during a deployment. The minimum number of healthy tasks during a deployment is the desiredCount multiplied by minimumHealthyPercent /100, rounded up to the nearest integer value.
list
An array of placement constraint objects to use for tasks in your service. You can specify a maximum of 10 constraints per task (this limit includes constraints in the task definition and those specified at run time).
(dict) --
An object representing a constraint on task placement. For more information, see Task Placement Constraints in the Amazon Elastic Container Service Developer Guide .
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. The value distinctInstance is not supported in task definitions.
expression (string) --
A cluster query language expression to apply to the constraint. Note you cannot specify an expression if the constraint type is distinctInstance . For more information, see Cluster Query Language in the Amazon Elastic Container Service Developer Guide .
list
The placement strategy objects to use for tasks in your service. You can specify a maximum of five strategy rules per 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 is 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 is 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.
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 is not 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 associated with a task.
subnets (list) -- [REQUIRED]
The subnets associated with the task or service.
(string) --
securityGroups (list) --
The security groups associated with the task or service. If you do not specify a security group, the default security group for the VPC is used.
(string) --
assignPublicIp (string) --
Specifies whether or not the task's elastic network interface receives a public IP address.
dict
Response Syntax
{
'service': {
'serviceArn': 'string',
'serviceName': 'string',
'clusterArn': 'string',
'loadBalancers': [
{
'targetGroupArn': 'string',
'loadBalancerName': 'string',
'containerName': 'string',
'containerPort': 123
},
],
'status': 'string',
'desiredCount': 123,
'runningCount': 123,
'pendingCount': 123,
'launchType': 'EC2'|'FARGATE',
'platformVersion': 'string',
'taskDefinition': 'string',
'deploymentConfiguration': {
'maximumPercent': 123,
'minimumHealthyPercent': 123
},
'deployments': [
{
'id': 'string',
'status': 'string',
'taskDefinition': 'string',
'desiredCount': 123,
'pendingCount': 123,
'runningCount': 123,
'createdAt': datetime(2015, 1, 1),
'updatedAt': datetime(2015, 1, 1),
'launchType': 'EC2'|'FARGATE',
'platformVersion': 'string',
'networkConfiguration': {
'awsvpcConfiguration': {
'subnets': [
'string',
],
'securityGroups': [
'string',
],
'assignPublicIp': 'ENABLED'|'DISABLED'
}
}
},
],
'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'
}
}
}
}
Response Structure
(dict) --
service (dict) --
The full description of your service following the create call.
serviceArn (string) --
The ARN that identifies the service. The ARN contains the arn:aws:ecs namespace, followed by the region of the service, the AWS account ID of the service owner, the service namespace, and then the service name. For example, ``arn:aws:ecs:region :012345678910 :service/my-service `` .
serviceName (string) --
The name of your service. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores 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.
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, containing the load balancer name, the container name (as it appears in a container definition), and the container port to access from the load balancer.
(dict) --
Details on a load balancer that is used with a service.
targetGroupArn (string) --
The full Amazon Resource Name (ARN) of the Elastic Load Balancing target group associated with a service.
loadBalancerName (string) --
The name of a load balancer.
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 service's task definition. Your container instances must allow ingress traffic on the hostPort of the port mapping.
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 on which your service is running.
platformVersion (string) --
The platform version on which your task is running. For more information, see AWS Fargate Platform Versions in the Amazon Elastic Container Service Developer Guide .
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.
maximumPercent (integer) --
The upper limit (as a percentage of the service's desiredCount ) of the number of tasks that are allowed in the RUNNING or PENDING state in a service during a deployment. The maximum number of tasks during a deployment is the desiredCount multiplied by maximumPercent /100, rounded down to the nearest integer value.
minimumHealthyPercent (integer) --
The lower limit (as a percentage of the service's desiredCount ) of the number of running tasks that must remain in the RUNNING state in a service during a deployment. The minimum number of healthy tasks during a deployment is the desiredCount multiplied by minimumHealthyPercent /100, rounded up to the nearest integer value.
deployments (list) --
The current state of deployments for the service.
(dict) --
The details of an Amazon ECS service deployment.
id (string) --
The ID of the deployment.
status (string) --
The status of the deployment. Valid values are PRIMARY (for the most recent deployment), ACTIVE (for previous deployments that still have tasks running, but are being replaced with the PRIMARY deployment), and INACTIVE (for deployments that have been completely replaced).
taskDefinition (string) --
The most recent task definition that was specified for 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.
createdAt (datetime) --
The Unix time stamp for when the service was created.
updatedAt (datetime) --
The Unix time stamp for when the service was last updated.
launchType (string) --
The launch type on which your service is running.
platformVersion (string) --
The platform version on which your service is running.
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 associated with a task.
subnets (list) --
The subnets associated with the task or service.
(string) --
securityGroups (list) --
The security groups associated with the task or service. If you do not specify a security group, the default security group for the VPC is used.
(string) --
assignPublicIp (string) --
Specifies whether or not the task's elastic network interface receives a public IP address.
roleArn (string) --
The ARN of the IAM role associated with the service that 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) --
Details on an event associated with a service.
id (string) --
The ID string of the event.
createdAt (datetime) --
The Unix time stamp for when the event was triggered.
message (string) --
The event message.
createdAt (datetime) --
The Unix time stamp for 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 .
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. The value distinctInstance is not supported in task definitions.
expression (string) --
A cluster query language expression to apply to the constraint. Note you cannot 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 is 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 is 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 associated with a task.
subnets (list) --
The subnets associated with the task or service.
(string) --
securityGroups (list) --
The security groups associated with the task or service. If you do not specify a security group, the default security group for the VPC is used.
(string) --
assignPublicIp (string) --
Specifies whether or not the task's elastic network interface receives a public IP address.
{'cluster': {'statistics': [{'name': 'string', 'value': 'string'}]}}
Deletes the specified cluster. You must deregister all container instances from this cluster before you may delete it. You can list the container instances in a cluster with ListContainerInstances and deregister them with DeregisterContainerInstance .
See also: AWS API Documentation
Request Syntax
client.delete_cluster(
cluster='string'
)
string
[REQUIRED]
The short name or full Amazon Resource Name (ARN) of the cluster to delete.
dict
Response Syntax
{
'cluster': {
'clusterArn': 'string',
'clusterName': 'string',
'status': 'string',
'registeredContainerInstancesCount': 123,
'runningTasksCount': 123,
'pendingTasksCount': 123,
'activeServicesCount': 123,
'statistics': [
{
'name': 'string',
'value': 'string'
},
]
}
}
Response Structure
(dict) --
cluster (dict) --
The full description of the deleted cluster.
clusterArn (string) --
The Amazon Resource Name (ARN) that identifies the cluster. The ARN contains the arn:aws:ecs namespace, followed by the region of the cluster, the AWS account ID of the cluster owner, the cluster namespace, and then the cluster name. For example, ``arn:aws:ecs:region :012345678910 :cluster/test `` ..
clusterName (string) --
A user-generated string that you use to identify your cluster.
status (string) --
The status of the cluster. The valid values are ACTIVE or INACTIVE . ACTIVE indicates that you can register container instances with the cluster and the associated instances can accept tasks.
registeredContainerInstancesCount (integer) --
The number of container instances registered into the cluster.
runningTasksCount (integer) --
The number of tasks in the cluster that are in the RUNNING state.
pendingTasksCount (integer) --
The number of tasks in the cluster that are in the PENDING state.
activeServicesCount (integer) --
The number of services that are running on the cluster in an ACTIVE state. You can view these services with ListServices .
statistics (list) --
Additional information about your clusters that are separated by launch type, including:
runningEC2TasksCount
RunningFargateTasksCount
pendingEC2TasksCount
pendingFargateTasksCount
activeEC2ServiceCount
activeFargateServiceCount
drainingEC2ServiceCount
drainingFargateServiceCount
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
{'service': {'deployments': {'launchType': 'EC2 | FARGATE',
'networkConfiguration': {'awsvpcConfiguration': {'assignPublicIp': 'ENABLED '
'| '
'DISABLED'}},
'platformVersion': 'string'},
'launchType': 'EC2 | FARGATE',
'networkConfiguration': {'awsvpcConfiguration': {'assignPublicIp': 'ENABLED '
'| '
'DISABLED'}},
'platformVersion': 'string'}}
Deletes a specified service within a cluster. You can delete a service if you have no running tasks in it and the desired task count is zero. If the service is actively maintaining tasks, you cannot delete it, and you must update the service to a desired task count of zero. For more information, see UpdateService .
Note
When you delete a service, if there are still running tasks that require cleanup, the service status moves from ACTIVE to DRAINING , and the service is no longer visible in the console or in ListServices API operations. After the tasks have stopped, then the service status moves from DRAINING to INACTIVE . Services in the DRAINING or INACTIVE status can still be viewed with DescribeServices API operations. However, in the future, INACTIVE services may be cleaned up and purged from Amazon ECS record keeping, and DescribeServices API operations on those services return a ServiceNotFoundException error.
See also: AWS API Documentation
Request Syntax
client.delete_service(
cluster='string',
service='string'
)
string
The short name or full Amazon Resource Name (ARN) of the cluster that hosts the service to delete. If you do not specify a cluster, the default cluster is assumed.
string
[REQUIRED]
The name of the service to delete.
dict
Response Syntax
{
'service': {
'serviceArn': 'string',
'serviceName': 'string',
'clusterArn': 'string',
'loadBalancers': [
{
'targetGroupArn': 'string',
'loadBalancerName': 'string',
'containerName': 'string',
'containerPort': 123
},
],
'status': 'string',
'desiredCount': 123,
'runningCount': 123,
'pendingCount': 123,
'launchType': 'EC2'|'FARGATE',
'platformVersion': 'string',
'taskDefinition': 'string',
'deploymentConfiguration': {
'maximumPercent': 123,
'minimumHealthyPercent': 123
},
'deployments': [
{
'id': 'string',
'status': 'string',
'taskDefinition': 'string',
'desiredCount': 123,
'pendingCount': 123,
'runningCount': 123,
'createdAt': datetime(2015, 1, 1),
'updatedAt': datetime(2015, 1, 1),
'launchType': 'EC2'|'FARGATE',
'platformVersion': 'string',
'networkConfiguration': {
'awsvpcConfiguration': {
'subnets': [
'string',
],
'securityGroups': [
'string',
],
'assignPublicIp': 'ENABLED'|'DISABLED'
}
}
},
],
'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'
}
}
}
}
Response Structure
(dict) --
service (dict) --
The full description of the deleted service.
serviceArn (string) --
The ARN that identifies the service. The ARN contains the arn:aws:ecs namespace, followed by the region of the service, the AWS account ID of the service owner, the service namespace, and then the service name. For example, ``arn:aws:ecs:region :012345678910 :service/my-service `` .
serviceName (string) --
The name of your service. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores 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.
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, containing the load balancer name, the container name (as it appears in a container definition), and the container port to access from the load balancer.
(dict) --
Details on a load balancer that is used with a service.
targetGroupArn (string) --
The full Amazon Resource Name (ARN) of the Elastic Load Balancing target group associated with a service.
loadBalancerName (string) --
The name of a load balancer.
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 service's task definition. Your container instances must allow ingress traffic on the hostPort of the port mapping.
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 on which your service is running.
platformVersion (string) --
The platform version on which your task is running. For more information, see AWS Fargate Platform Versions in the Amazon Elastic Container Service Developer Guide .
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.
maximumPercent (integer) --
The upper limit (as a percentage of the service's desiredCount ) of the number of tasks that are allowed in the RUNNING or PENDING state in a service during a deployment. The maximum number of tasks during a deployment is the desiredCount multiplied by maximumPercent /100, rounded down to the nearest integer value.
minimumHealthyPercent (integer) --
The lower limit (as a percentage of the service's desiredCount ) of the number of running tasks that must remain in the RUNNING state in a service during a deployment. The minimum number of healthy tasks during a deployment is the desiredCount multiplied by minimumHealthyPercent /100, rounded up to the nearest integer value.
deployments (list) --
The current state of deployments for the service.
(dict) --
The details of an Amazon ECS service deployment.
id (string) --
The ID of the deployment.
status (string) --
The status of the deployment. Valid values are PRIMARY (for the most recent deployment), ACTIVE (for previous deployments that still have tasks running, but are being replaced with the PRIMARY deployment), and INACTIVE (for deployments that have been completely replaced).
taskDefinition (string) --
The most recent task definition that was specified for 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.
createdAt (datetime) --
The Unix time stamp for when the service was created.
updatedAt (datetime) --
The Unix time stamp for when the service was last updated.
launchType (string) --
The launch type on which your service is running.
platformVersion (string) --
The platform version on which your service is running.
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 associated with a task.
subnets (list) --
The subnets associated with the task or service.
(string) --
securityGroups (list) --
The security groups associated with the task or service. If you do not specify a security group, the default security group for the VPC is used.
(string) --
assignPublicIp (string) --
Specifies whether or not the task's elastic network interface receives a public IP address.
roleArn (string) --
The ARN of the IAM role associated with the service that 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) --
Details on an event associated with a service.
id (string) --
The ID string of the event.
createdAt (datetime) --
The Unix time stamp for when the event was triggered.
message (string) --
The event message.
createdAt (datetime) --
The Unix time stamp for 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 .
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. The value distinctInstance is not supported in task definitions.
expression (string) --
A cluster query language expression to apply to the constraint. Note you cannot 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 is 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 is 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 associated with a task.
subnets (list) --
The subnets associated with the task or service.
(string) --
securityGroups (list) --
The security groups associated with the task or service. If you do not specify a security group, the default security group for the VPC is used.
(string) --
assignPublicIp (string) --
Specifies whether or not the task's elastic network interface receives a public IP address.
{'taskDefinition': {'compatibilities': ['EC2 | FARGATE'],
'cpu': 'string',
'executionRoleArn': 'string',
'memory': 'string',
'requiresCompatibilities': ['EC2 | FARGATE']}}
Deregisters the specified task definition by family and revision. Upon deregistration, the task definition is marked as INACTIVE . Existing tasks and services that reference an INACTIVE task definition continue to run without disruption. Existing services that reference an INACTIVE task definition can still scale up or down by modifying the service's desired count.
You cannot use an INACTIVE task definition to run new tasks or create new services, and you cannot update an existing service to reference an INACTIVE task definition (although there may be up to a 10-minute window following deregistration where these restrictions have not yet taken effect).
Note
At this time, INACTIVE task definitions remain discoverable in your account indefinitely; however, this behavior is subject to change in the future, so you should not rely on INACTIVE task definitions persisting beyond the lifecycle of any associated tasks and services.
See also: AWS API Documentation
Request Syntax
client.deregister_task_definition(
taskDefinition='string'
)
string
[REQUIRED]
The family and revision (family:revision ) or full Amazon Resource Name (ARN) of the task definition to deregister. You must specify a revision .
dict
Response Syntax
{
'taskDefinition': {
'taskDefinitionArn': 'string',
'containerDefinitions': [
{
'name': 'string',
'image': 'string',
'cpu': 123,
'memory': 123,
'memoryReservation': 123,
'links': [
'string',
],
'portMappings': [
{
'containerPort': 123,
'hostPort': 123,
'protocol': 'tcp'|'udp'
},
],
'essential': True|False,
'entryPoint': [
'string',
],
'command': [
'string',
],
'environment': [
{
'name': 'string',
'value': 'string'
},
],
'mountPoints': [
{
'sourceVolume': 'string',
'containerPath': 'string',
'readOnly': True|False
},
],
'volumesFrom': [
{
'sourceContainer': 'string',
'readOnly': True|False
},
],
'linuxParameters': {
'capabilities': {
'add': [
'string',
],
'drop': [
'string',
]
},
'devices': [
{
'hostPath': 'string',
'containerPath': 'string',
'permissions': [
'read'|'write'|'mknod',
]
},
],
'initProcessEnabled': True|False
},
'hostname': 'string',
'user': 'string',
'workingDirectory': 'string',
'disableNetworking': True|False,
'privileged': True|False,
'readonlyRootFilesystem': True|False,
'dnsServers': [
'string',
],
'dnsSearchDomains': [
'string',
],
'extraHosts': [
{
'hostname': 'string',
'ipAddress': 'string'
},
],
'dockerSecurityOptions': [
'string',
],
'dockerLabels': {
'string': 'string'
},
'ulimits': [
{
'name': 'core'|'cpu'|'data'|'fsize'|'locks'|'memlock'|'msgqueue'|'nice'|'nofile'|'nproc'|'rss'|'rtprio'|'rttime'|'sigpending'|'stack',
'softLimit': 123,
'hardLimit': 123
},
],
'logConfiguration': {
'logDriver': 'json-file'|'syslog'|'journald'|'gelf'|'fluentd'|'awslogs'|'splunk',
'options': {
'string': 'string'
}
}
},
],
'family': 'string',
'taskRoleArn': 'string',
'executionRoleArn': 'string',
'networkMode': 'bridge'|'host'|'awsvpc'|'none',
'revision': 123,
'volumes': [
{
'name': 'string',
'host': {
'sourcePath': 'string'
}
},
],
'status': 'ACTIVE'|'INACTIVE',
'requiresAttributes': [
{
'name': 'string',
'value': 'string',
'targetType': 'container-instance',
'targetId': 'string'
},
],
'placementConstraints': [
{
'type': 'memberOf',
'expression': 'string'
},
],
'compatibilities': [
'EC2'|'FARGATE',
],
'requiresCompatibilities': [
'EC2'|'FARGATE',
],
'cpu': 'string',
'memory': 'string'
}
}
Response Structure
(dict) --
taskDefinition (dict) --
The full description of the deregistered task.
taskDefinitionArn (string) --
The full Amazon Resource Name (ARN) of the task definition.
containerDefinitions (list) --
A list of container definitions in JSON format that describe the different containers that make up your task. For more information about container definition parameters and defaults, see Amazon ECS Task Definitions in the Amazon Elastic Container Service Developer Guide .
(dict) --
Container definitions are used in task definitions to describe the different containers that are launched as part of a task.
name (string) --
The name of a container. If you are linking multiple containers together in a task definition, the name of one container can be entered in the links of another container to connect the containers. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed. This parameter maps to name in the Create a container section of the Docker Remote API and the --name option to docker run .
image (string) --
The image used to start a container. This string is passed directly to the Docker daemon. Images in the Docker Hub registry are available by default. Other repositories are specified with either `` repository-url /image :tag `` or `` repository-url /image @*digest* `` . Up to 255 letters (uppercase and lowercase), numbers, hyphens, underscores, colons, periods, forward slashes, and number signs are allowed. This parameter maps to Image in the Create a container section of the Docker Remote API and the IMAGE parameter of docker run .
Images in Amazon ECR repositories can be specified by either using the full registry/repository:tag or registry/repository@digest . For example, 012345678910.dkr.ecr.<region-name>.amazonaws.com/<repository-name>:latest or 012345678910.dkr.ecr.<region-name>.amazonaws.com/<repository-name>@sha256:94afd1f2e64d908bc90dbca0035a5b567EXAMPLE .
Images in official repositories on Docker Hub use a single name (for example, ubuntu or mongo ).
Images in other repositories on Docker Hub are qualified with an organization name (for example, amazon/amazon-ecs-agent ).
Images in other online repositories are qualified further by a domain name (for example, quay.io/assemblyline/ubuntu ).
cpu (integer) --
The number of cpu units reserved for the container. If your containers will be part of a task using the Fargate launch type, this field is optional and the only requirement is that the total amount of CPU reserved for all containers within a task be lower than the task cpu value.
For containers that will be part of a task using the EC2 launch type, a container instance has 1,024 cpu units for every CPU core. This parameter specifies the minimum amount of CPU to reserve for a container, and containers share unallocated CPU units with other containers on the instance with the same ratio as their allocated amount. This parameter maps to CpuShares in the Create a container section of the Docker Remote API and the --cpu-shares option to docker run .
Note
You can determine the number of CPU units that are available per EC2 instance type by multiplying the vCPUs listed for that instance type on the Amazon EC2 Instances detail page by 1,024.
For example, if you run a single-container task on a single-core instance type with 512 CPU units specified for that container, and that is the only task running on the container instance, that container could use the full 1,024 CPU unit share at any given time. However, if you launched another copy of the same task on that container instance, each task would be guaranteed a minimum of 512 CPU units when needed, and each container could float to higher CPU usage if the other container was not using it, but if both tasks were 100% active all of the time, they would be limited to 512 CPU units.
The Docker daemon on the container instance uses the CPU value to calculate the relative CPU share ratios for running containers. For more information, see CPU share constraint in the Docker documentation. The minimum valid CPU share value that the Linux kernel allows is 2; however, the CPU parameter is not required, and you can use CPU values below 2 in your container definitions. For CPU values below 2 (including null), the behavior varies based on your Amazon ECS container agent version:
Agent versions less than or equal to 1.1.0: Null and zero CPU values are passed to Docker as 0, which Docker then converts to 1,024 CPU shares. CPU values of 1 are passed to Docker as 1, which the Linux kernel converts to 2 CPU shares.
Agent versions greater than or equal to 1.2.0: Null, zero, and CPU values of 1 are passed to Docker as 2.
memory (integer) --
The hard limit (in MiB) of memory to present to the container. If your container attempts to exceed the memory specified here, the container is killed. This parameter maps to Memory in the Create a container section of the Docker Remote API and the --memory option to docker run .
If your containers will be part of a task using the Fargate launch type, this field is optional and the only requirement is that the total amount of memory reserved for all containers within a task be lower than the task memory value.
For containers that will be part of a task using the EC2 launch type, you must specify a non-zero integer for one or both of memory or memoryReservation in container definitions. If you specify both, memory must be greater than memoryReservation . If you specify memoryReservation , then that value is subtracted from the available memory resources for the container instance on which the container is placed; otherwise, the value of memory is used.
The Docker daemon reserves a minimum of 4 MiB of memory for a container, so you should not specify fewer than 4 MiB of memory for your containers.
memoryReservation (integer) --
The soft limit (in MiB) of memory to reserve for the container. When system memory is under heavy contention, Docker attempts to keep the container memory to this soft limit; however, your container can consume more memory when it needs to, up to either the hard limit specified with the memory parameter (if applicable), or all of the available memory on the container instance, whichever comes first. This parameter maps to MemoryReservation in the Create a container section of the Docker Remote API and the --memory-reservation option to docker run .
You must specify a non-zero integer for one or both of memory or memoryReservation in container definitions. If you specify both, memory must be greater than memoryReservation . If you specify memoryReservation , then that value is subtracted from the available memory resources for the container instance on which the container is placed; otherwise, the value of memory is used.
For example, if your container normally uses 128 MiB of memory, but occasionally bursts to 256 MiB of memory for short periods of time, you can set a memoryReservation of 128 MiB, and a memory hard limit of 300 MiB. This configuration would allow the container to only reserve 128 MiB of memory from the remaining resources on the container instance, but also allow the container to consume more memory resources when needed.
links (list) --
The link parameter allows containers to communicate with each other without the need for port mappings, using the name parameter and optionally, an alias for the link. This construct is analogous to name:alias in Docker links. This field is not valid for containers in tasks using the Fargate launch type. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed for each name and alias . For more information on linking Docker containers, see https://docs.docker.com/engine/userguide/networking/default_network/dockerlinks/ . This parameter maps to Links in the Create a container section of the Docker Remote API and the --link option to docker run .
Warning
Containers that are collocated on a single container instance may be able to communicate with each other without requiring links or host port mappings. Network isolation is achieved on the container instance using security groups and VPC settings.
(string) --
portMappings (list) --
The list of port mappings for the container. Port mappings allow containers to access ports on the host container instance to send or receive traffic.
If using containers in a task with the Fargate, exposed ports should be specified using containerPort . The hostPort can be left blank or it must be the same value as the containerPort .
This parameter maps to PortBindings in the Create a container section of the Docker Remote API and the --publish option to docker run . If the network mode of a task definition is set to none , then you can't specify port mappings. If the network mode of a task definition is set to host , then host ports must either be undefined or they must match the container port in the port mapping.
Note
After a task reaches the RUNNING status, manual and automatic host and container port assignments are visible in the Network Bindings section of a container description for a selected task in the Amazon ECS console, or the networkBindings section DescribeTasks responses.
(dict) --
Port mappings allow containers to access ports on the host container instance to send or receive traffic. Port mappings are specified as part of the container definition.
If using containers in a task with the Fargate launch type, exposed ports should be specified using containerPort . The hostPort can be left blank or it must be the same value as the containerPort .
After a task reaches the RUNNING status, manual and automatic host and container port assignments are visible in the networkBindings section of DescribeTasks API responses.
containerPort (integer) --
The port number on the container that is bound to the user-specified or automatically assigned host port.
If using containers in a task with the Fargate launch type, exposed ports should be specified using containerPort .
If using containers in a task with the EC2 launch type and you specify a container port and not a host port, your container automatically receives a host port in the ephemeral port range (for more information, see hostPort ). Port mappings that are automatically assigned in this way do not count toward the 100 reserved ports limit of a container instance.
hostPort (integer) --
The port number on the container instance to reserve for your container.
If using containers in a task with the Fargate launch type, the hostPort can either be left blank or needs to be the same value as the containerPort .
If using containers in a task with the EC2 launch type, you can specify a non-reserved host port for your container port mapping, or you can omit the hostPort (or set it to 0 ) while specifying a containerPort and your container automatically receives a port in the ephemeral port range for your container instance operating system and Docker version.
The default ephemeral port range for Docker version 1.6.0 and later is listed on the instance under /proc/sys/net/ipv4/ip_local_port_range ; if this kernel parameter is unavailable, the default ephemeral port range from 49153 through 65535 is used. You should not attempt to specify a host port in the ephemeral port range as these are reserved for automatic assignment. In general, ports below 32768 are outside of the ephemeral port range.
Note
The default ephemeral port range from 49153 through 65535 is always used for Docker versions before 1.6.0.
The default reserved ports are 22 for SSH, the Docker ports 2375 and 2376, and the Amazon ECS container agent ports 51678 and 51679. Any host port that was previously specified in a running task is also reserved while the task is running (after a task stops, the host port is released). The current reserved ports are displayed in the remainingResources of DescribeContainerInstances output, and a container instance may have up to 100 reserved ports at a time, including the default reserved ports (automatically assigned ports do not count toward the 100 reserved ports limit).
protocol (string) --
The protocol used for the port mapping. Valid values are tcp and udp . The default is tcp .
essential (boolean) --
If the essential parameter of a container is marked as true , and that container fails or stops for any reason, all other containers that are part of the task are stopped. If the essential parameter of a container is marked as false , then its failure does not affect the rest of the containers in a task. If this parameter is omitted, a container is assumed to be essential.
All tasks must have at least one essential container. If you have an application that is composed of multiple containers, you should group containers that are used for a common purpose into components, and separate the different components into multiple task definitions. For more information, see Application Architecture in the Amazon Elastic Container Service Developer Guide .
entryPoint (list) --
Warning
Early versions of the Amazon ECS container agent do not properly handle entryPoint parameters. If you have problems using entryPoint , update your container agent or enter your commands and arguments as command array items instead.
The entry point that is passed to the container. This parameter maps to Entrypoint in the Create a container section of the Docker Remote API and the --entrypoint option to docker run . For more information, see https://docs.docker.com/engine/reference/builder/#entrypoint .
(string) --
command (list) --
The command that is passed to the container. This parameter maps to Cmd in the Create a container section of the Docker Remote API and the COMMAND parameter to docker run . For more information, see https://docs.docker.com/engine/reference/builder/#cmd .
(string) --
environment (list) --
The environment variables to pass to a container. This parameter maps to Env in the Create a container section of the Docker Remote API and the --env option to docker run .
Warning
We do not recommend using plaintext environment variables for sensitive information, such as credential data.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
mountPoints (list) --
The mount points for data volumes in your container.
If using the Fargate launch type, the sourceVolume parameter is not supported.
This parameter maps to Volumes in the Create a container section of the Docker Remote API and the --volume option to docker run .
(dict) --
Details on a volume mount point that is used in a container definition.
sourceVolume (string) --
The name of the volume to mount. If using the Fargate launch type, the sourceVolume parameter is not supported.
containerPath (string) --
The path on the container to mount the host volume at.
readOnly (boolean) --
If this value is true , the container has read-only access to the volume. If this value is false , then the container can write to the volume. The default value is false .
volumesFrom (list) --
Data volumes to mount from another container. This parameter maps to VolumesFrom in the Create a container section of the Docker Remote API and the --volumes-from option to docker run .
(dict) --
Details on a data volume from another container in the same task definition.
sourceContainer (string) --
The name of another container within the same task definition to mount volumes from.
readOnly (boolean) --
If this value is true , the container has read-only access to the volume. If this value is false , then the container can write to the volume. The default value is false .
linuxParameters (dict) --
Linux-specific modifications that are applied to the container, such as Linux KernelCapabilities . This field is not valid for containers in tasks using the Fargate launch type.
capabilities (dict) --
The Linux capabilities for the container that are added to or dropped from the default configuration provided by Docker.
add (list) --
The Linux capabilities for the container that have been added to the default configuration provided by Docker. This parameter maps to CapAdd in the Create a container section of the Docker Remote API and the --cap-add option to docker run .
Valid values: "ALL" | "AUDIT_CONTROL" | "AUDIT_WRITE" | "BLOCK_SUSPEND" | "CHOWN" | "DAC_OVERRIDE" | "DAC_READ_SEARCH" | "FOWNER" | "FSETID" | "IPC_LOCK" | "IPC_OWNER" | "KILL" | "LEASE" | "LINUX_IMMUTABLE" | "MAC_ADMIN" | "MAC_OVERRIDE" | "MKNOD" | "NET_ADMIN" | "NET_BIND_SERVICE" | "NET_BROADCAST" | "NET_RAW" | "SETFCAP" | "SETGID" | "SETPCAP" | "SETUID" | "SYS_ADMIN" | "SYS_BOOT" | "SYS_CHROOT" | "SYS_MODULE" | "SYS_NICE" | "SYS_PACCT" | "SYS_PTRACE" | "SYS_RAWIO" | "SYS_RESOURCE" | "SYS_TIME" | "SYS_TTY_CONFIG" | "SYSLOG" | "WAKE_ALARM"
(string) --
drop (list) --
The Linux capabilities for the container that have been removed from the default configuration provided by Docker. This parameter maps to CapDrop in the Create a container section of the Docker Remote API and the --cap-drop option to docker run .
Valid values: "ALL" | "AUDIT_CONTROL" | "AUDIT_WRITE" | "BLOCK_SUSPEND" | "CHOWN" | "DAC_OVERRIDE" | "DAC_READ_SEARCH" | "FOWNER" | "FSETID" | "IPC_LOCK" | "IPC_OWNER" | "KILL" | "LEASE" | "LINUX_IMMUTABLE" | "MAC_ADMIN" | "MAC_OVERRIDE" | "MKNOD" | "NET_ADMIN" | "NET_BIND_SERVICE" | "NET_BROADCAST" | "NET_RAW" | "SETFCAP" | "SETGID" | "SETPCAP" | "SETUID" | "SYS_ADMIN" | "SYS_BOOT" | "SYS_CHROOT" | "SYS_MODULE" | "SYS_NICE" | "SYS_PACCT" | "SYS_PTRACE" | "SYS_RAWIO" | "SYS_RESOURCE" | "SYS_TIME" | "SYS_TTY_CONFIG" | "SYSLOG" | "WAKE_ALARM"
(string) --
devices (list) --
Any host devices to expose to the container. This parameter maps to Devices in the Create a container section of the Docker Remote API and the --device option to docker run .
(dict) --
An object representing a container instance host device.
hostPath (string) --
The path for the device on the host container instance.
containerPath (string) --
The path inside the container at which to expose the host device.
permissions (list) --
The explicit permissions to provide to the container for the device. By default, the container has permissions for read , write , and mknod for the device.
(string) --
initProcessEnabled (boolean) --
Run an init process inside the container that forwards signals and reaps processes. This parameter maps to the --init option to docker run . This parameter requires version 1.25 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 | grep "Server API version"
hostname (string) --
The hostname to use for your container. This parameter maps to Hostname in the Create a container section of the Docker Remote API and the --hostname option to docker run .
user (string) --
The user name to use inside the container. This parameter maps to User in the Create a container section of the Docker Remote API and the --user option to docker run .
workingDirectory (string) --
The working directory in which to run commands inside the container. This parameter maps to WorkingDir in the Create a container section of the Docker Remote API and the --workdir option to docker run .
disableNetworking (boolean) --
When this parameter is true, networking is disabled within the container. This parameter maps to NetworkDisabled in the Create a container section of the Docker Remote API .
privileged (boolean) --
When this parameter is true, the container is given elevated privileges on the host container instance (similar to the root user). This parameter maps to Privileged in the Create a container section of the Docker Remote API and the --privileged option to docker run .
readonlyRootFilesystem (boolean) --
When this parameter is true, the container is given read-only access to its root file system. This parameter maps to ReadonlyRootfs in the Create a container section of the Docker Remote API and the --read-only option to docker run .
dnsServers (list) --
A list of DNS servers that are presented to the container. This parameter maps to Dns in the Create a container section of the Docker Remote API and the --dns option to docker run .
(string) --
dnsSearchDomains (list) --
A list of DNS search domains that are presented to the container. This parameter maps to DnsSearch in the Create a container section of the Docker Remote API and the --dns-search option to docker run .
(string) --
extraHosts (list) --
A list of hostnames and IP address mappings to append to the /etc/hosts file on the container. If using the Fargate launch type, this may be used to list non-Fargate hosts you want the container to talk to. This parameter maps to ExtraHosts in the Create a container section of the Docker Remote API and the --add-host option to docker run .
(dict) --
Hostnames and IP address entries that are added to the /etc/hosts file of a container via the extraHosts parameter of its ContainerDefinition .
hostname (string) --
The hostname to use in the /etc/hosts entry.
ipAddress (string) --
The IP address to use in the /etc/hosts entry.
dockerSecurityOptions (list) --
A list of strings to provide custom labels for SELinux and AppArmor multi-level security systems. This field is not valid for containers in tasks using the Fargate launch type.
This parameter maps to SecurityOpt in the Create a container section of the Docker Remote API and the --security-opt option to docker run .
Note
The Amazon ECS container agent running on a container instance must register with the ECS_SELINUX_CAPABLE=true or ECS_APPARMOR_CAPABLE=true environment variables before containers placed on that instance can use these security options. For more information, see Amazon ECS Container Agent Configuration in the Amazon Elastic Container Service Developer Guide .
(string) --
dockerLabels (dict) --
A key/value map of labels to add to the container. This parameter maps to Labels in the Create a container section of the Docker Remote API and the --label option to docker run . This parameter requires version 1.18 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 | grep "Server API version"
(string) --
(string) --
ulimits (list) --
A list of ulimits to set in the container. This parameter maps to Ulimits in the Create a container section of the Docker Remote API and the --ulimit option to docker run . Valid naming values are displayed in the Ulimit data type. This parameter requires version 1.18 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 | grep "Server API version"
(dict) --
The ulimit settings to pass to the container.
name (string) --
The type of the ulimit .
softLimit (integer) --
The soft limit for the ulimit type.
hardLimit (integer) --
The hard limit for the ulimit type.
logConfiguration (dict) --
The log configuration specification for the container.
If using the Fargate launch type, the only supported value is awslogs .
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 may use a different logging driver than the Docker daemon by specifying a log driver with this parameter in the container definition. To use a different logging driver for a container, the log system must be configured properly on the container instance (or on a different log server for remote logging options). For more information on the options for different supported log drivers, see Configure logging drivers in the Docker documentation.
Note
Amazon ECS currently supports a subset of the logging drivers available to the Docker daemon (shown in the LogConfiguration data type). 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. 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 | grep "Server API version"
Note
The Amazon ECS container agent running on a container instance must register the logging drivers available on that instance 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 .
logDriver (string) --
The log driver to use for the container. The valid values listed for this parameter are log drivers that the Amazon ECS container agent can communicate with by default. If using the Fargate launch type, the only supported value is awslogs . For more information about using the awslogs driver, see Using the awslogs Log Driver in the Amazon Elastic Container Service Developer Guide .
Note
If you have a custom driver that is not listed above that you would like to work with the Amazon ECS container agent, you can fork the Amazon ECS container agent project that is 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, Amazon Web Services does not currently support running modified copies of this software.
This parameter requires version 1.18 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 | grep "Server API version"
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 | grep "Server API version"
(string) --
(string) --
family (string) --
The family of your task definition, used as the definition name.
taskRoleArn (string) --
The ARN of the IAM role that containers in this task can assume. All containers in this task are granted the permissions that are specified in this role.
executionRoleArn (string) --
The Amazon Resource Name (ARN) of the task execution role that the Amazon ECS container agent and the Docker daemon can assume.
networkMode (string) --
The Docker networking mode to use for the containers in the task. The valid values are none , bridge , awsvpc , and host . The default Docker network mode is bridge . If using the Fargate launch type, the awsvpc network mode is required. If using the EC2 launch type, any network mode can be used. If the network mode is set to none , you can't specify port mappings in your container definitions, and the task's containers do not have external connectivity. The host and awsvpc network modes offer the highest networking performance for containers because they use the EC2 network stack instead of the virtualized network stack provided by the bridge mode.
With the host and awsvpc network modes, exposed container ports are mapped directly to the corresponding host port (for the host network mode) or the attached elastic network interface port (for the awsvpc network mode), so you cannot take advantage of dynamic host port mappings.
If the network mode is awsvpc , the task is allocated an Elastic Network Interface, and you must specify a NetworkConfiguration when you create a service or run a task with the task definition. For more information, see Task Networking in the Amazon Elastic Container Service Developer Guide .
If the network mode is host , you can't run multiple instantiations of the same task on a single container instance when port mappings are used.
For more information, see Network settings in the Docker run reference .
revision (integer) --
The revision of the task in a particular family. The revision is a version number of a task definition in a family. When you register a task definition for the first time, the revision is 1 ; each time you register a new revision of a task definition in the same family, the revision value always increases by one (even if you have deregistered previous revisions in this family).
volumes (list) --
The list of volumes in a task.
If you are using the Fargate launch type, the host and sourcePath parameters are not supported.
For more information about volume definition parameters and defaults, see Amazon ECS Task Definitions in the Amazon Elastic Container Service Developer Guide .
(dict) --
A data volume used in a task definition.
name (string) --
The name of the volume. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed. This name is referenced in the sourceVolume parameter of container definition mountPoints .
host (dict) --
The contents of the host parameter determine whether your data volume persists on the host container instance and where it is stored. If the host parameter is empty, then the Docker daemon assigns a host path for your data volume, but the data is not guaranteed to persist after the containers associated with it stop running.
If you are using the Fargate launch type, the host parameter is not supported.
sourcePath (string) --
The path on the host container instance that is presented to the container. If this parameter is empty, then the Docker daemon has assigned a host path for you. If the host parameter contains a sourcePath file location, then the data volume persists at the specified location on the host container instance until you delete it manually. If the sourcePath value does not exist on the host container instance, the Docker daemon creates it. If the location does exist, the contents of the source path folder are exported.
If you are using the Fargate launch type, the host parameter is not supported.
status (string) --
The status of the task definition.
requiresAttributes (list) --
The container instance attributes required by your task. This field is not valid if using the Fargate launch type for your task.
(dict) --
An attribute is a name-value pair associated with an Amazon ECS object. Attributes enable you to extend the Amazon ECS data model by adding custom metadata to your resources. For more information, see Attributes in the Amazon Elastic Container Service Developer Guide .
name (string) --
The name of the attribute. Up to 128 letters (uppercase and lowercase), numbers, hyphens, underscores, and periods are allowed.
value (string) --
The value of the attribute. Up to 128 letters (uppercase and lowercase), numbers, hyphens, underscores, periods, at signs (@), forward slashes, colons, and spaces are allowed.
targetType (string) --
The type of the target with which to attach the attribute. This parameter is required if you use the short form ID for a resource instead of the full ARN.
targetId (string) --
The ID of the target. You can specify the short form ID for a resource or the full Amazon Resource Name (ARN).
placementConstraints (list) --
An array of placement constraint objects to use for tasks. This field is not valid if using the Fargate launch type for your task.
(dict) --
An object representing a constraint on task placement in the task definition.
If you are using the Fargate launch type, task placement contraints are not supported.
For more information, see Task Placement Constraints in the Amazon Elastic Container Service Developer Guide .
type (string) --
The type of constraint. The DistinctInstance constraint ensures that each task in a particular group is running on a different container instance. The MemberOf constraint restricts selection to be from a group of valid candidates.
expression (string) --
A cluster query language expression to apply to the constraint. For more information, see Cluster Query Language in the Amazon Elastic Container Service Developer Guide .
compatibilities (list) --
The launch type to use with your task. For more information, see Amazon ECS Launch Types in the Amazon Elastic Container Service Developer Guide .
(string) --
requiresCompatibilities (list) --
The launch type the task is using.
(string) --
cpu (string) --
The number of cpu units used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the memory parameter:
256 (.25 vCPU) - Available memory values: 512MB, 1GB, 2GB
512 (.5 vCPU) - Available memory values: 1GB, 2GB, 3GB, 4GB
1024 (1 vCPU) - Available memory values: 2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB
2048 (2 vCPU) - Available memory values: Between 4GB and 16GB in 1GB increments
4096 (4 vCPU) - Available memory values: Between 8GB and 30GB in 1GB increments
memory (string) --
The amount (in MiB) of memory used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the cpu parameter:
512MB, 1GB, 2GB - Available cpu values: 256 (.25 vCPU)
1GB, 2GB, 3GB, 4GB - Available cpu values: 512 (.5 vCPU)
2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB - Available cpu values: 1024 (1 vCPU)
Between 4GB and 16GB in 1GB increments - Available cpu values: 2048 (2 vCPU)
Between 8GB and 30GB in 1GB increments - Available cpu values: 4096 (4 vCPU)
{'include': ['STATISTICS']}
Response {'clusters': {'statistics': [{'name': 'string', 'value': 'string'}]}}
Describes one or more of your clusters.
See also: AWS API Documentation
Request Syntax
client.describe_clusters(
clusters=[
'string',
],
include=[
'STATISTICS',
]
)
list
A list of up to 100 cluster names or full cluster Amazon Resource Name (ARN) entries. If you do not specify a cluster, the default cluster is assumed.
(string) --
list
Additional information about your clusters to be separated by launch type, including:
runningEC2TasksCount
RunningFargateTasksCount
pendingEC2TasksCount
pendingFargateTasksCount
activeEC2ServiceCount
activeFargateServiceCount
drainingEC2ServiceCount
drainingFargateServiceCount
(string) --
dict
Response Syntax
{
'clusters': [
{
'clusterArn': 'string',
'clusterName': 'string',
'status': 'string',
'registeredContainerInstancesCount': 123,
'runningTasksCount': 123,
'pendingTasksCount': 123,
'activeServicesCount': 123,
'statistics': [
{
'name': 'string',
'value': 'string'
},
]
},
],
'failures': [
{
'arn': 'string',
'reason': 'string'
},
]
}
Response Structure
(dict) --
clusters (list) --
The list of clusters.
(dict) --
A regional grouping of one or more container instances on which you can run task requests. Each account receives a default cluster the first time you use the Amazon ECS service, but you may also create other clusters. Clusters may contain more than one instance type simultaneously.
clusterArn (string) --
The Amazon Resource Name (ARN) that identifies the cluster. The ARN contains the arn:aws:ecs namespace, followed by the region of the cluster, the AWS account ID of the cluster owner, the cluster namespace, and then the cluster name. For example, ``arn:aws:ecs:region :012345678910 :cluster/test `` ..
clusterName (string) --
A user-generated string that you use to identify your cluster.
status (string) --
The status of the cluster. The valid values are ACTIVE or INACTIVE . ACTIVE indicates that you can register container instances with the cluster and the associated instances can accept tasks.
registeredContainerInstancesCount (integer) --
The number of container instances registered into the cluster.
runningTasksCount (integer) --
The number of tasks in the cluster that are in the RUNNING state.
pendingTasksCount (integer) --
The number of tasks in the cluster that are in the PENDING state.
activeServicesCount (integer) --
The number of services that are running on the cluster in an ACTIVE state. You can view these services with ListServices .
statistics (list) --
Additional information about your clusters that are separated by launch type, including:
runningEC2TasksCount
RunningFargateTasksCount
pendingEC2TasksCount
pendingFargateTasksCount
activeEC2ServiceCount
activeFargateServiceCount
drainingEC2ServiceCount
drainingFargateServiceCount
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
failures (list) --
Any failures associated with the call.
(dict) --
A failed resource.
arn (string) --
The Amazon Resource Name (ARN) of the failed resource.
reason (string) --
The reason for the failure.
{'services': {'deployments': {'launchType': 'EC2 | FARGATE',
'networkConfiguration': {'awsvpcConfiguration': {'assignPublicIp': 'ENABLED '
'| '
'DISABLED'}},
'platformVersion': 'string'},
'launchType': 'EC2 | FARGATE',
'networkConfiguration': {'awsvpcConfiguration': {'assignPublicIp': 'ENABLED '
'| '
'DISABLED'}},
'platformVersion': 'string'}}
Describes the specified services running in your cluster.
See also: AWS API Documentation
Request Syntax
client.describe_services(
cluster='string',
services=[
'string',
]
)
string
The short name or full Amazon Resource Name (ARN)the cluster that hosts the service to describe. If you do not specify a cluster, the default cluster is assumed.
list
[REQUIRED]
A list of services to describe. You may specify up to 10 services to describe in a single operation.
(string) --
dict
Response Syntax
{
'services': [
{
'serviceArn': 'string',
'serviceName': 'string',
'clusterArn': 'string',
'loadBalancers': [
{
'targetGroupArn': 'string',
'loadBalancerName': 'string',
'containerName': 'string',
'containerPort': 123
},
],
'status': 'string',
'desiredCount': 123,
'runningCount': 123,
'pendingCount': 123,
'launchType': 'EC2'|'FARGATE',
'platformVersion': 'string',
'taskDefinition': 'string',
'deploymentConfiguration': {
'maximumPercent': 123,
'minimumHealthyPercent': 123
},
'deployments': [
{
'id': 'string',
'status': 'string',
'taskDefinition': 'string',
'desiredCount': 123,
'pendingCount': 123,
'runningCount': 123,
'createdAt': datetime(2015, 1, 1),
'updatedAt': datetime(2015, 1, 1),
'launchType': 'EC2'|'FARGATE',
'platformVersion': 'string',
'networkConfiguration': {
'awsvpcConfiguration': {
'subnets': [
'string',
],
'securityGroups': [
'string',
],
'assignPublicIp': 'ENABLED'|'DISABLED'
}
}
},
],
'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'
}
}
},
],
'failures': [
{
'arn': 'string',
'reason': 'string'
},
]
}
Response Structure
(dict) --
services (list) --
The list of services described.
(dict) --
Details on a service within a cluster
serviceArn (string) --
The ARN that identifies the service. The ARN contains the arn:aws:ecs namespace, followed by the region of the service, the AWS account ID of the service owner, the service namespace, and then the service name. For example, ``arn:aws:ecs:region :012345678910 :service/my-service `` .
serviceName (string) --
The name of your service. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores 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.
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, containing the load balancer name, the container name (as it appears in a container definition), and the container port to access from the load balancer.
(dict) --
Details on a load balancer that is used with a service.
targetGroupArn (string) --
The full Amazon Resource Name (ARN) of the Elastic Load Balancing target group associated with a service.
loadBalancerName (string) --
The name of a load balancer.
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 service's task definition. Your container instances must allow ingress traffic on the hostPort of the port mapping.
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 on which your service is running.
platformVersion (string) --
The platform version on which your task is running. For more information, see AWS Fargate Platform Versions in the Amazon Elastic Container Service Developer Guide .
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.
maximumPercent (integer) --
The upper limit (as a percentage of the service's desiredCount ) of the number of tasks that are allowed in the RUNNING or PENDING state in a service during a deployment. The maximum number of tasks during a deployment is the desiredCount multiplied by maximumPercent /100, rounded down to the nearest integer value.
minimumHealthyPercent (integer) --
The lower limit (as a percentage of the service's desiredCount ) of the number of running tasks that must remain in the RUNNING state in a service during a deployment. The minimum number of healthy tasks during a deployment is the desiredCount multiplied by minimumHealthyPercent /100, rounded up to the nearest integer value.
deployments (list) --
The current state of deployments for the service.
(dict) --
The details of an Amazon ECS service deployment.
id (string) --
The ID of the deployment.
status (string) --
The status of the deployment. Valid values are PRIMARY (for the most recent deployment), ACTIVE (for previous deployments that still have tasks running, but are being replaced with the PRIMARY deployment), and INACTIVE (for deployments that have been completely replaced).
taskDefinition (string) --
The most recent task definition that was specified for 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.
createdAt (datetime) --
The Unix time stamp for when the service was created.
updatedAt (datetime) --
The Unix time stamp for when the service was last updated.
launchType (string) --
The launch type on which your service is running.
platformVersion (string) --
The platform version on which your service is running.
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 associated with a task.
subnets (list) --
The subnets associated with the task or service.
(string) --
securityGroups (list) --
The security groups associated with the task or service. If you do not specify a security group, the default security group for the VPC is used.
(string) --
assignPublicIp (string) --
Specifies whether or not the task's elastic network interface receives a public IP address.
roleArn (string) --
The ARN of the IAM role associated with the service that 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) --
Details on an event associated with a service.
id (string) --
The ID string of the event.
createdAt (datetime) --
The Unix time stamp for when the event was triggered.
message (string) --
The event message.
createdAt (datetime) --
The Unix time stamp for 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 .
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. The value distinctInstance is not supported in task definitions.
expression (string) --
A cluster query language expression to apply to the constraint. Note you cannot 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 is 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 is 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 associated with a task.
subnets (list) --
The subnets associated with the task or service.
(string) --
securityGroups (list) --
The security groups associated with the task or service. If you do not specify a security group, the default security group for the VPC is used.
(string) --
assignPublicIp (string) --
Specifies whether or not the task's elastic network interface receives a public IP address.
failures (list) --
Any failures associated with the call.
(dict) --
A failed resource.
arn (string) --
The Amazon Resource Name (ARN) of the failed resource.
reason (string) --
The reason for the failure.
{'taskDefinition': {'compatibilities': ['EC2 | FARGATE'],
'cpu': 'string',
'executionRoleArn': 'string',
'memory': 'string',
'requiresCompatibilities': ['EC2 | FARGATE']}}
Describes a task definition. You can specify a family and revision to find information about a specific task definition, or you can simply specify the family to find the latest ACTIVE revision in that family.
Note
You can only describe INACTIVE task definitions while an active task or service references them.
See also: AWS API Documentation
Request Syntax
client.describe_task_definition(
taskDefinition='string'
)
string
[REQUIRED]
The family for the latest ACTIVE revision, family and revision (family:revision ) for a specific revision in the family, or full Amazon Resource Name (ARN) of the task definition to describe.
dict
Response Syntax
{
'taskDefinition': {
'taskDefinitionArn': 'string',
'containerDefinitions': [
{
'name': 'string',
'image': 'string',
'cpu': 123,
'memory': 123,
'memoryReservation': 123,
'links': [
'string',
],
'portMappings': [
{
'containerPort': 123,
'hostPort': 123,
'protocol': 'tcp'|'udp'
},
],
'essential': True|False,
'entryPoint': [
'string',
],
'command': [
'string',
],
'environment': [
{
'name': 'string',
'value': 'string'
},
],
'mountPoints': [
{
'sourceVolume': 'string',
'containerPath': 'string',
'readOnly': True|False
},
],
'volumesFrom': [
{
'sourceContainer': 'string',
'readOnly': True|False
},
],
'linuxParameters': {
'capabilities': {
'add': [
'string',
],
'drop': [
'string',
]
},
'devices': [
{
'hostPath': 'string',
'containerPath': 'string',
'permissions': [
'read'|'write'|'mknod',
]
},
],
'initProcessEnabled': True|False
},
'hostname': 'string',
'user': 'string',
'workingDirectory': 'string',
'disableNetworking': True|False,
'privileged': True|False,
'readonlyRootFilesystem': True|False,
'dnsServers': [
'string',
],
'dnsSearchDomains': [
'string',
],
'extraHosts': [
{
'hostname': 'string',
'ipAddress': 'string'
},
],
'dockerSecurityOptions': [
'string',
],
'dockerLabels': {
'string': 'string'
},
'ulimits': [
{
'name': 'core'|'cpu'|'data'|'fsize'|'locks'|'memlock'|'msgqueue'|'nice'|'nofile'|'nproc'|'rss'|'rtprio'|'rttime'|'sigpending'|'stack',
'softLimit': 123,
'hardLimit': 123
},
],
'logConfiguration': {
'logDriver': 'json-file'|'syslog'|'journald'|'gelf'|'fluentd'|'awslogs'|'splunk',
'options': {
'string': 'string'
}
}
},
],
'family': 'string',
'taskRoleArn': 'string',
'executionRoleArn': 'string',
'networkMode': 'bridge'|'host'|'awsvpc'|'none',
'revision': 123,
'volumes': [
{
'name': 'string',
'host': {
'sourcePath': 'string'
}
},
],
'status': 'ACTIVE'|'INACTIVE',
'requiresAttributes': [
{
'name': 'string',
'value': 'string',
'targetType': 'container-instance',
'targetId': 'string'
},
],
'placementConstraints': [
{
'type': 'memberOf',
'expression': 'string'
},
],
'compatibilities': [
'EC2'|'FARGATE',
],
'requiresCompatibilities': [
'EC2'|'FARGATE',
],
'cpu': 'string',
'memory': 'string'
}
}
Response Structure
(dict) --
taskDefinition (dict) --
The full task definition description.
taskDefinitionArn (string) --
The full Amazon Resource Name (ARN) of the task definition.
containerDefinitions (list) --
A list of container definitions in JSON format that describe the different containers that make up your task. For more information about container definition parameters and defaults, see Amazon ECS Task Definitions in the Amazon Elastic Container Service Developer Guide .
(dict) --
Container definitions are used in task definitions to describe the different containers that are launched as part of a task.
name (string) --
The name of a container. If you are linking multiple containers together in a task definition, the name of one container can be entered in the links of another container to connect the containers. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed. This parameter maps to name in the Create a container section of the Docker Remote API and the --name option to docker run .
image (string) --
The image used to start a container. This string is passed directly to the Docker daemon. Images in the Docker Hub registry are available by default. Other repositories are specified with either `` repository-url /image :tag `` or `` repository-url /image @*digest* `` . Up to 255 letters (uppercase and lowercase), numbers, hyphens, underscores, colons, periods, forward slashes, and number signs are allowed. This parameter maps to Image in the Create a container section of the Docker Remote API and the IMAGE parameter of docker run .
Images in Amazon ECR repositories can be specified by either using the full registry/repository:tag or registry/repository@digest . For example, 012345678910.dkr.ecr.<region-name>.amazonaws.com/<repository-name>:latest or 012345678910.dkr.ecr.<region-name>.amazonaws.com/<repository-name>@sha256:94afd1f2e64d908bc90dbca0035a5b567EXAMPLE .
Images in official repositories on Docker Hub use a single name (for example, ubuntu or mongo ).
Images in other repositories on Docker Hub are qualified with an organization name (for example, amazon/amazon-ecs-agent ).
Images in other online repositories are qualified further by a domain name (for example, quay.io/assemblyline/ubuntu ).
cpu (integer) --
The number of cpu units reserved for the container. If your containers will be part of a task using the Fargate launch type, this field is optional and the only requirement is that the total amount of CPU reserved for all containers within a task be lower than the task cpu value.
For containers that will be part of a task using the EC2 launch type, a container instance has 1,024 cpu units for every CPU core. This parameter specifies the minimum amount of CPU to reserve for a container, and containers share unallocated CPU units with other containers on the instance with the same ratio as their allocated amount. This parameter maps to CpuShares in the Create a container section of the Docker Remote API and the --cpu-shares option to docker run .
Note
You can determine the number of CPU units that are available per EC2 instance type by multiplying the vCPUs listed for that instance type on the Amazon EC2 Instances detail page by 1,024.
For example, if you run a single-container task on a single-core instance type with 512 CPU units specified for that container, and that is the only task running on the container instance, that container could use the full 1,024 CPU unit share at any given time. However, if you launched another copy of the same task on that container instance, each task would be guaranteed a minimum of 512 CPU units when needed, and each container could float to higher CPU usage if the other container was not using it, but if both tasks were 100% active all of the time, they would be limited to 512 CPU units.
The Docker daemon on the container instance uses the CPU value to calculate the relative CPU share ratios for running containers. For more information, see CPU share constraint in the Docker documentation. The minimum valid CPU share value that the Linux kernel allows is 2; however, the CPU parameter is not required, and you can use CPU values below 2 in your container definitions. For CPU values below 2 (including null), the behavior varies based on your Amazon ECS container agent version:
Agent versions less than or equal to 1.1.0: Null and zero CPU values are passed to Docker as 0, which Docker then converts to 1,024 CPU shares. CPU values of 1 are passed to Docker as 1, which the Linux kernel converts to 2 CPU shares.
Agent versions greater than or equal to 1.2.0: Null, zero, and CPU values of 1 are passed to Docker as 2.
memory (integer) --
The hard limit (in MiB) of memory to present to the container. If your container attempts to exceed the memory specified here, the container is killed. This parameter maps to Memory in the Create a container section of the Docker Remote API and the --memory option to docker run .
If your containers will be part of a task using the Fargate launch type, this field is optional and the only requirement is that the total amount of memory reserved for all containers within a task be lower than the task memory value.
For containers that will be part of a task using the EC2 launch type, you must specify a non-zero integer for one or both of memory or memoryReservation in container definitions. If you specify both, memory must be greater than memoryReservation . If you specify memoryReservation , then that value is subtracted from the available memory resources for the container instance on which the container is placed; otherwise, the value of memory is used.
The Docker daemon reserves a minimum of 4 MiB of memory for a container, so you should not specify fewer than 4 MiB of memory for your containers.
memoryReservation (integer) --
The soft limit (in MiB) of memory to reserve for the container. When system memory is under heavy contention, Docker attempts to keep the container memory to this soft limit; however, your container can consume more memory when it needs to, up to either the hard limit specified with the memory parameter (if applicable), or all of the available memory on the container instance, whichever comes first. This parameter maps to MemoryReservation in the Create a container section of the Docker Remote API and the --memory-reservation option to docker run .
You must specify a non-zero integer for one or both of memory or memoryReservation in container definitions. If you specify both, memory must be greater than memoryReservation . If you specify memoryReservation , then that value is subtracted from the available memory resources for the container instance on which the container is placed; otherwise, the value of memory is used.
For example, if your container normally uses 128 MiB of memory, but occasionally bursts to 256 MiB of memory for short periods of time, you can set a memoryReservation of 128 MiB, and a memory hard limit of 300 MiB. This configuration would allow the container to only reserve 128 MiB of memory from the remaining resources on the container instance, but also allow the container to consume more memory resources when needed.
links (list) --
The link parameter allows containers to communicate with each other without the need for port mappings, using the name parameter and optionally, an alias for the link. This construct is analogous to name:alias in Docker links. This field is not valid for containers in tasks using the Fargate launch type. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed for each name and alias . For more information on linking Docker containers, see https://docs.docker.com/engine/userguide/networking/default_network/dockerlinks/ . This parameter maps to Links in the Create a container section of the Docker Remote API and the --link option to docker run .
Warning
Containers that are collocated on a single container instance may be able to communicate with each other without requiring links or host port mappings. Network isolation is achieved on the container instance using security groups and VPC settings.
(string) --
portMappings (list) --
The list of port mappings for the container. Port mappings allow containers to access ports on the host container instance to send or receive traffic.
If using containers in a task with the Fargate, exposed ports should be specified using containerPort . The hostPort can be left blank or it must be the same value as the containerPort .
This parameter maps to PortBindings in the Create a container section of the Docker Remote API and the --publish option to docker run . If the network mode of a task definition is set to none , then you can't specify port mappings. If the network mode of a task definition is set to host , then host ports must either be undefined or they must match the container port in the port mapping.
Note
After a task reaches the RUNNING status, manual and automatic host and container port assignments are visible in the Network Bindings section of a container description for a selected task in the Amazon ECS console, or the networkBindings section DescribeTasks responses.
(dict) --
Port mappings allow containers to access ports on the host container instance to send or receive traffic. Port mappings are specified as part of the container definition.
If using containers in a task with the Fargate launch type, exposed ports should be specified using containerPort . The hostPort can be left blank or it must be the same value as the containerPort .
After a task reaches the RUNNING status, manual and automatic host and container port assignments are visible in the networkBindings section of DescribeTasks API responses.
containerPort (integer) --
The port number on the container that is bound to the user-specified or automatically assigned host port.
If using containers in a task with the Fargate launch type, exposed ports should be specified using containerPort .
If using containers in a task with the EC2 launch type and you specify a container port and not a host port, your container automatically receives a host port in the ephemeral port range (for more information, see hostPort ). Port mappings that are automatically assigned in this way do not count toward the 100 reserved ports limit of a container instance.
hostPort (integer) --
The port number on the container instance to reserve for your container.
If using containers in a task with the Fargate launch type, the hostPort can either be left blank or needs to be the same value as the containerPort .
If using containers in a task with the EC2 launch type, you can specify a non-reserved host port for your container port mapping, or you can omit the hostPort (or set it to 0 ) while specifying a containerPort and your container automatically receives a port in the ephemeral port range for your container instance operating system and Docker version.
The default ephemeral port range for Docker version 1.6.0 and later is listed on the instance under /proc/sys/net/ipv4/ip_local_port_range ; if this kernel parameter is unavailable, the default ephemeral port range from 49153 through 65535 is used. You should not attempt to specify a host port in the ephemeral port range as these are reserved for automatic assignment. In general, ports below 32768 are outside of the ephemeral port range.
Note
The default ephemeral port range from 49153 through 65535 is always used for Docker versions before 1.6.0.
The default reserved ports are 22 for SSH, the Docker ports 2375 and 2376, and the Amazon ECS container agent ports 51678 and 51679. Any host port that was previously specified in a running task is also reserved while the task is running (after a task stops, the host port is released). The current reserved ports are displayed in the remainingResources of DescribeContainerInstances output, and a container instance may have up to 100 reserved ports at a time, including the default reserved ports (automatically assigned ports do not count toward the 100 reserved ports limit).
protocol (string) --
The protocol used for the port mapping. Valid values are tcp and udp . The default is tcp .
essential (boolean) --
If the essential parameter of a container is marked as true , and that container fails or stops for any reason, all other containers that are part of the task are stopped. If the essential parameter of a container is marked as false , then its failure does not affect the rest of the containers in a task. If this parameter is omitted, a container is assumed to be essential.
All tasks must have at least one essential container. If you have an application that is composed of multiple containers, you should group containers that are used for a common purpose into components, and separate the different components into multiple task definitions. For more information, see Application Architecture in the Amazon Elastic Container Service Developer Guide .
entryPoint (list) --
Warning
Early versions of the Amazon ECS container agent do not properly handle entryPoint parameters. If you have problems using entryPoint , update your container agent or enter your commands and arguments as command array items instead.
The entry point that is passed to the container. This parameter maps to Entrypoint in the Create a container section of the Docker Remote API and the --entrypoint option to docker run . For more information, see https://docs.docker.com/engine/reference/builder/#entrypoint .
(string) --
command (list) --
The command that is passed to the container. This parameter maps to Cmd in the Create a container section of the Docker Remote API and the COMMAND parameter to docker run . For more information, see https://docs.docker.com/engine/reference/builder/#cmd .
(string) --
environment (list) --
The environment variables to pass to a container. This parameter maps to Env in the Create a container section of the Docker Remote API and the --env option to docker run .
Warning
We do not recommend using plaintext environment variables for sensitive information, such as credential data.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
mountPoints (list) --
The mount points for data volumes in your container.
If using the Fargate launch type, the sourceVolume parameter is not supported.
This parameter maps to Volumes in the Create a container section of the Docker Remote API and the --volume option to docker run .
(dict) --
Details on a volume mount point that is used in a container definition.
sourceVolume (string) --
The name of the volume to mount. If using the Fargate launch type, the sourceVolume parameter is not supported.
containerPath (string) --
The path on the container to mount the host volume at.
readOnly (boolean) --
If this value is true , the container has read-only access to the volume. If this value is false , then the container can write to the volume. The default value is false .
volumesFrom (list) --
Data volumes to mount from another container. This parameter maps to VolumesFrom in the Create a container section of the Docker Remote API and the --volumes-from option to docker run .
(dict) --
Details on a data volume from another container in the same task definition.
sourceContainer (string) --
The name of another container within the same task definition to mount volumes from.
readOnly (boolean) --
If this value is true , the container has read-only access to the volume. If this value is false , then the container can write to the volume. The default value is false .
linuxParameters (dict) --
Linux-specific modifications that are applied to the container, such as Linux KernelCapabilities . This field is not valid for containers in tasks using the Fargate launch type.
capabilities (dict) --
The Linux capabilities for the container that are added to or dropped from the default configuration provided by Docker.
add (list) --
The Linux capabilities for the container that have been added to the default configuration provided by Docker. This parameter maps to CapAdd in the Create a container section of the Docker Remote API and the --cap-add option to docker run .
Valid values: "ALL" | "AUDIT_CONTROL" | "AUDIT_WRITE" | "BLOCK_SUSPEND" | "CHOWN" | "DAC_OVERRIDE" | "DAC_READ_SEARCH" | "FOWNER" | "FSETID" | "IPC_LOCK" | "IPC_OWNER" | "KILL" | "LEASE" | "LINUX_IMMUTABLE" | "MAC_ADMIN" | "MAC_OVERRIDE" | "MKNOD" | "NET_ADMIN" | "NET_BIND_SERVICE" | "NET_BROADCAST" | "NET_RAW" | "SETFCAP" | "SETGID" | "SETPCAP" | "SETUID" | "SYS_ADMIN" | "SYS_BOOT" | "SYS_CHROOT" | "SYS_MODULE" | "SYS_NICE" | "SYS_PACCT" | "SYS_PTRACE" | "SYS_RAWIO" | "SYS_RESOURCE" | "SYS_TIME" | "SYS_TTY_CONFIG" | "SYSLOG" | "WAKE_ALARM"
(string) --
drop (list) --
The Linux capabilities for the container that have been removed from the default configuration provided by Docker. This parameter maps to CapDrop in the Create a container section of the Docker Remote API and the --cap-drop option to docker run .
Valid values: "ALL" | "AUDIT_CONTROL" | "AUDIT_WRITE" | "BLOCK_SUSPEND" | "CHOWN" | "DAC_OVERRIDE" | "DAC_READ_SEARCH" | "FOWNER" | "FSETID" | "IPC_LOCK" | "IPC_OWNER" | "KILL" | "LEASE" | "LINUX_IMMUTABLE" | "MAC_ADMIN" | "MAC_OVERRIDE" | "MKNOD" | "NET_ADMIN" | "NET_BIND_SERVICE" | "NET_BROADCAST" | "NET_RAW" | "SETFCAP" | "SETGID" | "SETPCAP" | "SETUID" | "SYS_ADMIN" | "SYS_BOOT" | "SYS_CHROOT" | "SYS_MODULE" | "SYS_NICE" | "SYS_PACCT" | "SYS_PTRACE" | "SYS_RAWIO" | "SYS_RESOURCE" | "SYS_TIME" | "SYS_TTY_CONFIG" | "SYSLOG" | "WAKE_ALARM"
(string) --
devices (list) --
Any host devices to expose to the container. This parameter maps to Devices in the Create a container section of the Docker Remote API and the --device option to docker run .
(dict) --
An object representing a container instance host device.
hostPath (string) --
The path for the device on the host container instance.
containerPath (string) --
The path inside the container at which to expose the host device.
permissions (list) --
The explicit permissions to provide to the container for the device. By default, the container has permissions for read , write , and mknod for the device.
(string) --
initProcessEnabled (boolean) --
Run an init process inside the container that forwards signals and reaps processes. This parameter maps to the --init option to docker run . This parameter requires version 1.25 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 | grep "Server API version"
hostname (string) --
The hostname to use for your container. This parameter maps to Hostname in the Create a container section of the Docker Remote API and the --hostname option to docker run .
user (string) --
The user name to use inside the container. This parameter maps to User in the Create a container section of the Docker Remote API and the --user option to docker run .
workingDirectory (string) --
The working directory in which to run commands inside the container. This parameter maps to WorkingDir in the Create a container section of the Docker Remote API and the --workdir option to docker run .
disableNetworking (boolean) --
When this parameter is true, networking is disabled within the container. This parameter maps to NetworkDisabled in the Create a container section of the Docker Remote API .
privileged (boolean) --
When this parameter is true, the container is given elevated privileges on the host container instance (similar to the root user). This parameter maps to Privileged in the Create a container section of the Docker Remote API and the --privileged option to docker run .
readonlyRootFilesystem (boolean) --
When this parameter is true, the container is given read-only access to its root file system. This parameter maps to ReadonlyRootfs in the Create a container section of the Docker Remote API and the --read-only option to docker run .
dnsServers (list) --
A list of DNS servers that are presented to the container. This parameter maps to Dns in the Create a container section of the Docker Remote API and the --dns option to docker run .
(string) --
dnsSearchDomains (list) --
A list of DNS search domains that are presented to the container. This parameter maps to DnsSearch in the Create a container section of the Docker Remote API and the --dns-search option to docker run .
(string) --
extraHosts (list) --
A list of hostnames and IP address mappings to append to the /etc/hosts file on the container. If using the Fargate launch type, this may be used to list non-Fargate hosts you want the container to talk to. This parameter maps to ExtraHosts in the Create a container section of the Docker Remote API and the --add-host option to docker run .
(dict) --
Hostnames and IP address entries that are added to the /etc/hosts file of a container via the extraHosts parameter of its ContainerDefinition .
hostname (string) --
The hostname to use in the /etc/hosts entry.
ipAddress (string) --
The IP address to use in the /etc/hosts entry.
dockerSecurityOptions (list) --
A list of strings to provide custom labels for SELinux and AppArmor multi-level security systems. This field is not valid for containers in tasks using the Fargate launch type.
This parameter maps to SecurityOpt in the Create a container section of the Docker Remote API and the --security-opt option to docker run .
Note
The Amazon ECS container agent running on a container instance must register with the ECS_SELINUX_CAPABLE=true or ECS_APPARMOR_CAPABLE=true environment variables before containers placed on that instance can use these security options. For more information, see Amazon ECS Container Agent Configuration in the Amazon Elastic Container Service Developer Guide .
(string) --
dockerLabels (dict) --
A key/value map of labels to add to the container. This parameter maps to Labels in the Create a container section of the Docker Remote API and the --label option to docker run . This parameter requires version 1.18 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 | grep "Server API version"
(string) --
(string) --
ulimits (list) --
A list of ulimits to set in the container. This parameter maps to Ulimits in the Create a container section of the Docker Remote API and the --ulimit option to docker run . Valid naming values are displayed in the Ulimit data type. This parameter requires version 1.18 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 | grep "Server API version"
(dict) --
The ulimit settings to pass to the container.
name (string) --
The type of the ulimit .
softLimit (integer) --
The soft limit for the ulimit type.
hardLimit (integer) --
The hard limit for the ulimit type.
logConfiguration (dict) --
The log configuration specification for the container.
If using the Fargate launch type, the only supported value is awslogs .
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 may use a different logging driver than the Docker daemon by specifying a log driver with this parameter in the container definition. To use a different logging driver for a container, the log system must be configured properly on the container instance (or on a different log server for remote logging options). For more information on the options for different supported log drivers, see Configure logging drivers in the Docker documentation.
Note
Amazon ECS currently supports a subset of the logging drivers available to the Docker daemon (shown in the LogConfiguration data type). 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. 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 | grep "Server API version"
Note
The Amazon ECS container agent running on a container instance must register the logging drivers available on that instance 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 .
logDriver (string) --
The log driver to use for the container. The valid values listed for this parameter are log drivers that the Amazon ECS container agent can communicate with by default. If using the Fargate launch type, the only supported value is awslogs . For more information about using the awslogs driver, see Using the awslogs Log Driver in the Amazon Elastic Container Service Developer Guide .
Note
If you have a custom driver that is not listed above that you would like to work with the Amazon ECS container agent, you can fork the Amazon ECS container agent project that is 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, Amazon Web Services does not currently support running modified copies of this software.
This parameter requires version 1.18 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 | grep "Server API version"
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 | grep "Server API version"
(string) --
(string) --
family (string) --
The family of your task definition, used as the definition name.
taskRoleArn (string) --
The ARN of the IAM role that containers in this task can assume. All containers in this task are granted the permissions that are specified in this role.
executionRoleArn (string) --
The Amazon Resource Name (ARN) of the task execution role that the Amazon ECS container agent and the Docker daemon can assume.
networkMode (string) --
The Docker networking mode to use for the containers in the task. The valid values are none , bridge , awsvpc , and host . The default Docker network mode is bridge . If using the Fargate launch type, the awsvpc network mode is required. If using the EC2 launch type, any network mode can be used. If the network mode is set to none , you can't specify port mappings in your container definitions, and the task's containers do not have external connectivity. The host and awsvpc network modes offer the highest networking performance for containers because they use the EC2 network stack instead of the virtualized network stack provided by the bridge mode.
With the host and awsvpc network modes, exposed container ports are mapped directly to the corresponding host port (for the host network mode) or the attached elastic network interface port (for the awsvpc network mode), so you cannot take advantage of dynamic host port mappings.
If the network mode is awsvpc , the task is allocated an Elastic Network Interface, and you must specify a NetworkConfiguration when you create a service or run a task with the task definition. For more information, see Task Networking in the Amazon Elastic Container Service Developer Guide .
If the network mode is host , you can't run multiple instantiations of the same task on a single container instance when port mappings are used.
For more information, see Network settings in the Docker run reference .
revision (integer) --
The revision of the task in a particular family. The revision is a version number of a task definition in a family. When you register a task definition for the first time, the revision is 1 ; each time you register a new revision of a task definition in the same family, the revision value always increases by one (even if you have deregistered previous revisions in this family).
volumes (list) --
The list of volumes in a task.
If you are using the Fargate launch type, the host and sourcePath parameters are not supported.
For more information about volume definition parameters and defaults, see Amazon ECS Task Definitions in the Amazon Elastic Container Service Developer Guide .
(dict) --
A data volume used in a task definition.
name (string) --
The name of the volume. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed. This name is referenced in the sourceVolume parameter of container definition mountPoints .
host (dict) --
The contents of the host parameter determine whether your data volume persists on the host container instance and where it is stored. If the host parameter is empty, then the Docker daemon assigns a host path for your data volume, but the data is not guaranteed to persist after the containers associated with it stop running.
If you are using the Fargate launch type, the host parameter is not supported.
sourcePath (string) --
The path on the host container instance that is presented to the container. If this parameter is empty, then the Docker daemon has assigned a host path for you. If the host parameter contains a sourcePath file location, then the data volume persists at the specified location on the host container instance until you delete it manually. If the sourcePath value does not exist on the host container instance, the Docker daemon creates it. If the location does exist, the contents of the source path folder are exported.
If you are using the Fargate launch type, the host parameter is not supported.
status (string) --
The status of the task definition.
requiresAttributes (list) --
The container instance attributes required by your task. This field is not valid if using the Fargate launch type for your task.
(dict) --
An attribute is a name-value pair associated with an Amazon ECS object. Attributes enable you to extend the Amazon ECS data model by adding custom metadata to your resources. For more information, see Attributes in the Amazon Elastic Container Service Developer Guide .
name (string) --
The name of the attribute. Up to 128 letters (uppercase and lowercase), numbers, hyphens, underscores, and periods are allowed.
value (string) --
The value of the attribute. Up to 128 letters (uppercase and lowercase), numbers, hyphens, underscores, periods, at signs (@), forward slashes, colons, and spaces are allowed.
targetType (string) --
The type of the target with which to attach the attribute. This parameter is required if you use the short form ID for a resource instead of the full ARN.
targetId (string) --
The ID of the target. You can specify the short form ID for a resource or the full Amazon Resource Name (ARN).
placementConstraints (list) --
An array of placement constraint objects to use for tasks. This field is not valid if using the Fargate launch type for your task.
(dict) --
An object representing a constraint on task placement in the task definition.
If you are using the Fargate launch type, task placement contraints are not supported.
For more information, see Task Placement Constraints in the Amazon Elastic Container Service Developer Guide .
type (string) --
The type of constraint. The DistinctInstance constraint ensures that each task in a particular group is running on a different container instance. The MemberOf constraint restricts selection to be from a group of valid candidates.
expression (string) --
A cluster query language expression to apply to the constraint. For more information, see Cluster Query Language in the Amazon Elastic Container Service Developer Guide .
compatibilities (list) --
The launch type to use with your task. For more information, see Amazon ECS Launch Types in the Amazon Elastic Container Service Developer Guide .
(string) --
requiresCompatibilities (list) --
The launch type the task is using.
(string) --
cpu (string) --
The number of cpu units used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the memory parameter:
256 (.25 vCPU) - Available memory values: 512MB, 1GB, 2GB
512 (.5 vCPU) - Available memory values: 1GB, 2GB, 3GB, 4GB
1024 (1 vCPU) - Available memory values: 2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB
2048 (2 vCPU) - Available memory values: Between 4GB and 16GB in 1GB increments
4096 (4 vCPU) - Available memory values: Between 8GB and 30GB in 1GB increments
memory (string) --
The amount (in MiB) of memory used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the cpu parameter:
512MB, 1GB, 2GB - Available cpu values: 256 (.25 vCPU)
1GB, 2GB, 3GB, 4GB - Available cpu values: 512 (.5 vCPU)
2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB - Available cpu values: 1024 (1 vCPU)
Between 4GB and 16GB in 1GB increments - Available cpu values: 2048 (2 vCPU)
Between 8GB and 30GB in 1GB increments - Available cpu values: 4096 (4 vCPU)
{'tasks': {'connectivity': 'CONNECTED | DISCONNECTED',
'connectivityAt': 'timestamp',
'cpu': 'string',
'executionStoppedAt': 'timestamp',
'launchType': 'EC2 | FARGATE',
'memory': 'string',
'overrides': {'executionRoleArn': 'string'},
'platformVersion': 'string',
'pullStartedAt': 'timestamp',
'pullStoppedAt': 'timestamp',
'stoppingAt': 'timestamp'}}
Describes a specified task or tasks.
See also: AWS API Documentation
Request Syntax
client.describe_tasks(
cluster='string',
tasks=[
'string',
]
)
string
The short name or full Amazon Resource Name (ARN) of the cluster that hosts the task to describe. If you do not specify a cluster, the default cluster is assumed.
list
[REQUIRED]
A list of up to 100 task IDs or full ARN entries.
(string) --
dict
Response Syntax
{
'tasks': [
{
'taskArn': 'string',
'clusterArn': 'string',
'taskDefinitionArn': 'string',
'containerInstanceArn': 'string',
'overrides': {
'containerOverrides': [
{
'name': 'string',
'command': [
'string',
],
'environment': [
{
'name': 'string',
'value': 'string'
},
],
'cpu': 123,
'memory': 123,
'memoryReservation': 123
},
],
'taskRoleArn': 'string',
'executionRoleArn': 'string'
},
'lastStatus': 'string',
'desiredStatus': 'string',
'cpu': 'string',
'memory': 'string',
'containers': [
{
'containerArn': 'string',
'taskArn': 'string',
'name': 'string',
'lastStatus': 'string',
'exitCode': 123,
'reason': 'string',
'networkBindings': [
{
'bindIP': 'string',
'containerPort': 123,
'hostPort': 123,
'protocol': 'tcp'|'udp'
},
],
'networkInterfaces': [
{
'attachmentId': 'string',
'privateIpv4Address': 'string',
'ipv6Address': 'string'
},
]
},
],
'startedBy': 'string',
'version': 123,
'stoppedReason': 'string',
'connectivity': 'CONNECTED'|'DISCONNECTED',
'connectivityAt': datetime(2015, 1, 1),
'pullStartedAt': datetime(2015, 1, 1),
'pullStoppedAt': datetime(2015, 1, 1),
'executionStoppedAt': datetime(2015, 1, 1),
'createdAt': datetime(2015, 1, 1),
'startedAt': datetime(2015, 1, 1),
'stoppingAt': datetime(2015, 1, 1),
'stoppedAt': datetime(2015, 1, 1),
'group': 'string',
'launchType': 'EC2'|'FARGATE',
'platformVersion': 'string',
'attachments': [
{
'id': 'string',
'type': 'string',
'status': 'string',
'details': [
{
'name': 'string',
'value': 'string'
},
]
},
]
},
],
'failures': [
{
'arn': 'string',
'reason': 'string'
},
]
}
Response Structure
(dict) --
tasks (list) --
The list of tasks.
(dict) --
Details on a task in a cluster.
taskArn (string) --
The Amazon Resource Name (ARN) of the task.
clusterArn (string) --
The ARN of the cluster that hosts the task.
taskDefinitionArn (string) --
The ARN of the task definition that creates the task.
containerInstanceArn (string) --
The ARN of the container instances that host the task.
overrides (dict) --
One or more container overrides.
containerOverrides (list) --
One or more container overrides sent to a task.
(dict) --
The overrides that should be sent to a container.
name (string) --
The name of the container that receives the override. This parameter is required if any override is specified.
command (list) --
The command to send to the container that overrides the default command from the Docker image or the task definition. You must also specify a container name.
(string) --
environment (list) --
The environment variables to send to the container. You can add new environment variables, which are added to the container at launch, or you can override the existing environment variables from the Docker image or the task definition. You must also specify a container name.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
cpu (integer) --
The number of cpu units reserved for the container, instead of the default value from the task definition. You must also specify a container name.
memory (integer) --
The hard limit (in MiB) of memory to present to the container, instead of the default value from the task definition. If your container attempts to exceed the memory specified here, the container is killed. You must also specify a container name.
memoryReservation (integer) --
The soft limit (in MiB) of memory to reserve for the container, instead of the default value from the task definition. You must also specify a container name.
taskRoleArn (string) --
The Amazon Resource Name (ARN) of the IAM role that containers in this task can assume. All containers in this task are granted the permissions that are specified in this role.
executionRoleArn (string) --
The Amazon Resource Name (ARN) of the task execution role that the Amazon ECS container agent and the Docker daemon can assume.
lastStatus (string) --
The last known status of the task.
desiredStatus (string) --
The desired status of the task.
cpu (string) --
The number of cpu units used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the memory parameter:
256 (.25 vCPU) - Available memory values: 512MB, 1GB, 2GB
512 (.5 vCPU) - Available memory values: 1GB, 2GB, 3GB, 4GB
1024 (1 vCPU) - Available memory values: 2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB
2048 (2 vCPU) - Available memory values: Between 4GB and 16GB in 1GB increments
4096 (4 vCPU) - Available memory values: Between 8GB and 30GB in 1GB increments
memory (string) --
The amount (in MiB) of memory used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the cpu parameter:
512MB, 1GB, 2GB - Available cpu values: 256 (.25 vCPU)
1GB, 2GB, 3GB, 4GB - Available cpu values: 512 (.5 vCPU)
2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB - Available cpu values: 1024 (1 vCPU)
Between 4GB and 16GB in 1GB increments - Available cpu values: 2048 (2 vCPU)
Between 8GB and 30GB in 1GB increments - Available cpu values: 4096 (4 vCPU)
containers (list) --
The containers associated with the task.
(dict) --
A Docker container that is part of a task.
containerArn (string) --
The Amazon Resource Name (ARN) of the container.
taskArn (string) --
The ARN of the task.
name (string) --
The name of the container.
lastStatus (string) --
The last known status of the container.
exitCode (integer) --
The exit code returned from the container.
reason (string) --
A short (255 max characters) human-readable string to provide additional details about a running or stopped container.
networkBindings (list) --
The network bindings associated with the container.
(dict) --
Details on the network bindings between a container and its host container instance. After a task reaches the RUNNING status, manual and automatic host and container port assignments are visible in the networkBindings section of DescribeTasks API responses.
bindIP (string) --
The IP address that the container is bound to on the container instance.
containerPort (integer) --
The port number on the container that is used with the network binding.
hostPort (integer) --
The port number on the host that is used with the network binding.
protocol (string) --
The protocol used for the network binding.
networkInterfaces (list) --
The network interfaces associated with the container.
(dict) --
An object representing the Elastic Network Interface for tasks that use the awsvpc network mode.
attachmentId (string) --
The attachment ID for the network interface.
privateIpv4Address (string) --
The private IPv4 address for the network interface.
ipv6Address (string) --
The private IPv6 address for the network interface.
startedBy (string) --
The tag specified when a task is started. If the task is started by an Amazon ECS service, then the startedBy parameter contains the deployment ID of the service that starts it.
version (integer) --
The version counter for the task. Every time a task experiences a change that triggers a CloudWatch event, the version counter is incremented. If you are replicating your Amazon ECS task state with CloudWatch Events, you can compare the version of a task reported by the Amazon ECS APIs with the version reported in CloudWatch Events for the task (inside the detail object) to verify that the version in your event stream is current.
stoppedReason (string) --
The reason the task was stopped.
connectivity (string) --
The connectivity status of a task.
connectivityAt (datetime) --
The Unix time stamp for when the task last went into CONNECTED status.
pullStartedAt (datetime) --
The Unix time stamp for when the container image pull began.
pullStoppedAt (datetime) --
The Unix time stamp for when the container image pull completed.
executionStoppedAt (datetime) --
The Unix timestamp for when the task execution stopped.
createdAt (datetime) --
The Unix time stamp for when the task was created (the task entered the PENDING state).
startedAt (datetime) --
The Unix time stamp for when the task started (the task transitioned from the PENDING state to the RUNNING state).
stoppingAt (datetime) --
The Unix time stamp for when the task will stop (the task transitioned from the RUNNING state to the STOPPED state).
stoppedAt (datetime) --
The Unix time stamp for when the task was stopped (the task transitioned from the RUNNING state to the STOPPED state).
group (string) --
The name of the task group associated with the task.
launchType (string) --
The launch type on which your task is running.
platformVersion (string) --
The platform version on which your task is running. For more information, see AWS Fargate Platform Versions in the Amazon Elastic Container Service Developer Guide .
attachments (list) --
The Elastic Network Adapter associated with the task if the task uses the awsvpc network mode.
(dict) --
An object representing a container instance or task attachment.
id (string) --
The unique identifier for the attachment.
type (string) --
The type of the attachment, such as an ElasticNetworkInterface .
status (string) --
The status of the attachment. Valid values are PRECREATED , CREATED , ATTACHING , ATTACHED , DETACHING , DETACHED , and DELETED .
details (list) --
Details of the attachment. For Elastic Network Interfaces, this includes the network interface ID, the MAC address, the subnet ID, and the private IPv4 address.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
failures (list) --
Any failures associated with the call.
(dict) --
A failed resource.
arn (string) --
The Amazon Resource Name (ARN) of the failed resource.
reason (string) --
The reason for the failure.
{'launchType': 'EC2 | FARGATE'}
Lists the services that are running in a specified cluster.
See also: AWS API Documentation
Request Syntax
client.list_services(
cluster='string',
nextToken='string',
maxResults=123,
launchType='EC2'|'FARGATE'
)
string
The short name or full Amazon Resource Name (ARN) of the cluster that hosts the services to list. If you do not specify a cluster, the default cluster is assumed.
string
The nextToken value returned from a previous paginated ListServices request where maxResults was used and the results exceeded the value of that parameter. Pagination continues from the end of the previous results that returned the nextToken value.
Note
This token should be treated as an opaque identifier that is only used to retrieve the next items in a list and not for other programmatic purposes.
integer
The maximum number of service results returned by ListServices in paginated output. When this parameter is used, ListServices only returns maxResults results in a single page along with a nextToken response element. The remaining results of the initial request can be seen by sending another ListServices request with the returned nextToken value. This value can be between 1 and 10. If this parameter is not used, then ListServices returns up to 10 results and a nextToken value if applicable.
string
The launch type for services you want to list.
dict
Response Syntax
{
'serviceArns': [
'string',
],
'nextToken': 'string'
}
Response Structure
(dict) --
serviceArns (list) --
The list of full ARN entries for each service associated with the specified cluster.
(string) --
nextToken (string) --
The nextToken value to include in a future ListServices request. When the results of a ListServices request exceed maxResults , this value can be used to retrieve the next page of results. This value is null when there are no more results to return.
{'launchType': 'EC2 | FARGATE'}
Returns a list of tasks for a specified cluster. You can filter the results by family name, by a particular container instance, or by the desired status of the task with the family , containerInstance , and desiredStatus parameters.
Recently stopped tasks might appear in the returned results. Currently, stopped tasks appear in the returned results for at least one hour.
See also: AWS API Documentation
Request Syntax
client.list_tasks(
cluster='string',
containerInstance='string',
family='string',
nextToken='string',
maxResults=123,
startedBy='string',
serviceName='string',
desiredStatus='RUNNING'|'PENDING'|'STOPPED',
launchType='EC2'|'FARGATE'
)
string
The short name or full Amazon Resource Name (ARN) of the cluster that hosts the tasks to list. If you do not specify a cluster, the default cluster is assumed.
string
The container instance ID or full ARN of the container instance with which to filter the ListTasks results. Specifying a containerInstance limits the results to tasks that belong to that container instance.
string
The name of the family with which to filter the ListTasks results. Specifying a family limits the results to tasks that belong to that family.
string
The nextToken value returned from a previous paginated ListTasks request where maxResults was used and the results exceeded the value of that parameter. Pagination continues from the end of the previous results that returned the nextToken value.
Note
This token should be treated as an opaque identifier that is only used to retrieve the next items in a list and not for other programmatic purposes.
integer
The maximum number of task results returned by ListTasks in paginated output. When this parameter is used, ListTasks only returns maxResults results in a single page along with a nextToken response element. The remaining results of the initial request can be seen by sending another ListTasks request with the returned nextToken value. This value can be between 1 and 100. If this parameter is not used, then ListTasks returns up to 100 results and a nextToken value if applicable.
string
The startedBy value with which to filter the task results. Specifying a startedBy value limits the results to tasks that were started with that value.
string
The name of the service with which to filter the ListTasks results. Specifying a serviceName limits the results to tasks that belong to that service.
string
The task desired status with which to filter the ListTasks results. Specifying a desiredStatus of STOPPED limits the results to tasks that Amazon ECS has set the desired status to STOPPED , which can be useful for debugging tasks that are not starting properly or have died or finished. The default status filter is RUNNING , which shows tasks that Amazon ECS has set the desired status to RUNNING .
Note
Although you can filter results based on a desired status of PENDING , this does not return any results because Amazon ECS never sets the desired status of a task to that value (only a task's lastStatus may have a value of PENDING ).
string
The launch type for services you want to list.
dict
Response Syntax
{
'taskArns': [
'string',
],
'nextToken': 'string'
}
Response Structure
(dict) --
taskArns (list) --
The list of task ARN entries for the ListTasks request.
(string) --
nextToken (string) --
The nextToken value to include in a future ListTasks request. When the results of a ListTasks request exceed maxResults , this value can be used to retrieve the next page of results. This value is null when there are no more results to return.
{'cpu': 'string',
'executionRoleArn': 'string',
'memory': 'string',
'requiresCompatibilities': ['EC2 | FARGATE']}
Response {'taskDefinition': {'compatibilities': ['EC2 | FARGATE'],
'cpu': 'string',
'executionRoleArn': 'string',
'memory': 'string',
'requiresCompatibilities': ['EC2 | FARGATE']}}
Registers a new task definition from the supplied family and containerDefinitions . Optionally, you can add data volumes to your containers with the volumes parameter. For more information about task definition parameters and defaults, see Amazon ECS Task Definitions in the Amazon Elastic Container Service Developer Guide .
You can specify an IAM role for your task with the taskRoleArn parameter. When you specify an IAM role for a task, its containers can then use the latest versions of the AWS CLI or SDKs to make API requests to the AWS services that are specified in the IAM policy associated with the role. For more information, see IAM Roles for Tasks in the Amazon Elastic Container Service Developer Guide .
You can specify a Docker networking mode for the containers in your task definition with the networkMode parameter. The available network modes correspond to those described in Network settings in the Docker run reference. If you specify the awsvpc network mode, the task is allocated an Elastic Network Interface, and you must specify a NetworkConfiguration when you create a service or run a task with the task definition. For more information, see Task Networking in the Amazon Elastic Container Service Developer Guide .
See also: AWS API Documentation
Request Syntax
client.register_task_definition(
family='string',
taskRoleArn='string',
executionRoleArn='string',
networkMode='bridge'|'host'|'awsvpc'|'none',
containerDefinitions=[
{
'name': 'string',
'image': 'string',
'cpu': 123,
'memory': 123,
'memoryReservation': 123,
'links': [
'string',
],
'portMappings': [
{
'containerPort': 123,
'hostPort': 123,
'protocol': 'tcp'|'udp'
},
],
'essential': True|False,
'entryPoint': [
'string',
],
'command': [
'string',
],
'environment': [
{
'name': 'string',
'value': 'string'
},
],
'mountPoints': [
{
'sourceVolume': 'string',
'containerPath': 'string',
'readOnly': True|False
},
],
'volumesFrom': [
{
'sourceContainer': 'string',
'readOnly': True|False
},
],
'linuxParameters': {
'capabilities': {
'add': [
'string',
],
'drop': [
'string',
]
},
'devices': [
{
'hostPath': 'string',
'containerPath': 'string',
'permissions': [
'read'|'write'|'mknod',
]
},
],
'initProcessEnabled': True|False
},
'hostname': 'string',
'user': 'string',
'workingDirectory': 'string',
'disableNetworking': True|False,
'privileged': True|False,
'readonlyRootFilesystem': True|False,
'dnsServers': [
'string',
],
'dnsSearchDomains': [
'string',
],
'extraHosts': [
{
'hostname': 'string',
'ipAddress': 'string'
},
],
'dockerSecurityOptions': [
'string',
],
'dockerLabels': {
'string': 'string'
},
'ulimits': [
{
'name': 'core'|'cpu'|'data'|'fsize'|'locks'|'memlock'|'msgqueue'|'nice'|'nofile'|'nproc'|'rss'|'rtprio'|'rttime'|'sigpending'|'stack',
'softLimit': 123,
'hardLimit': 123
},
],
'logConfiguration': {
'logDriver': 'json-file'|'syslog'|'journald'|'gelf'|'fluentd'|'awslogs'|'splunk',
'options': {
'string': 'string'
}
}
},
],
volumes=[
{
'name': 'string',
'host': {
'sourcePath': 'string'
}
},
],
placementConstraints=[
{
'type': 'memberOf',
'expression': 'string'
},
],
requiresCompatibilities=[
'EC2'|'FARGATE',
],
cpu='string',
memory='string'
)
string
[REQUIRED]
You must specify a family for a task definition, which allows you to track multiple versions of the same task definition. The family is used as a name for your task definition. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed.
string
The short name or full Amazon Resource Name (ARN) of the IAM role that containers in this task can assume. All containers in this task are granted the permissions that are specified in this role. For more information, see IAM Roles for Tasks in the Amazon Elastic Container Service Developer Guide .
string
The Amazon Resource Name (ARN) of the task execution role that the Amazon ECS container agent and the Docker daemon can assume.
string
The Docker networking mode to use for the containers in the task. The valid values are none , bridge , awsvpc , and host . The default Docker network mode is bridge . If using the Fargate launch type, the awsvpc network mode is required. If using the EC2 launch type, any network mode can be used. If the network mode is set to none , you can't specify port mappings in your container definitions, and the task's containers do not have external connectivity. The host and awsvpc network modes offer the highest networking performance for containers because they use the EC2 network stack instead of the virtualized network stack provided by the bridge mode.
With the host and awsvpc network modes, exposed container ports are mapped directly to the corresponding host port (for the host network mode) or the attached elastic network interface port (for the awsvpc network mode), so you cannot take advantage of dynamic host port mappings.
If the network mode is awsvpc , the task is allocated an Elastic Network Interface, and you must specify a NetworkConfiguration when you create a service or run a task with the task definition. For more information, see Task Networking in the Amazon Elastic Container Service Developer Guide .
If the network mode is host , you can't run multiple instantiations of the same task on a single container instance when port mappings are used.
For more information, see Network settings in the Docker run reference .
list
[REQUIRED]
A list of container definitions in JSON format that describe the different containers that make up your task.
(dict) --
Container definitions are used in task definitions to describe the different containers that are launched as part of a task.
name (string) --
The name of a container. If you are linking multiple containers together in a task definition, the name of one container can be entered in the links of another container to connect the containers. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed. This parameter maps to name in the Create a container section of the Docker Remote API and the --name option to docker run .
image (string) --
The image used to start a container. This string is passed directly to the Docker daemon. Images in the Docker Hub registry are available by default. Other repositories are specified with either `` repository-url /image :tag `` or `` repository-url /image @*digest* `` . Up to 255 letters (uppercase and lowercase), numbers, hyphens, underscores, colons, periods, forward slashes, and number signs are allowed. This parameter maps to Image in the Create a container section of the Docker Remote API and the IMAGE parameter of docker run .
Images in Amazon ECR repositories can be specified by either using the full registry/repository:tag or registry/repository@digest . For example, 012345678910.dkr.ecr.<region-name>.amazonaws.com/<repository-name>:latest or 012345678910.dkr.ecr.<region-name>.amazonaws.com/<repository-name>@sha256:94afd1f2e64d908bc90dbca0035a5b567EXAMPLE .
Images in official repositories on Docker Hub use a single name (for example, ubuntu or mongo ).
Images in other repositories on Docker Hub are qualified with an organization name (for example, amazon/amazon-ecs-agent ).
Images in other online repositories are qualified further by a domain name (for example, quay.io/assemblyline/ubuntu ).
cpu (integer) --
The number of cpu units reserved for the container. If your containers will be part of a task using the Fargate launch type, this field is optional and the only requirement is that the total amount of CPU reserved for all containers within a task be lower than the task cpu value.
For containers that will be part of a task using the EC2 launch type, a container instance has 1,024 cpu units for every CPU core. This parameter specifies the minimum amount of CPU to reserve for a container, and containers share unallocated CPU units with other containers on the instance with the same ratio as their allocated amount. This parameter maps to CpuShares in the Create a container section of the Docker Remote API and the --cpu-shares option to docker run .
Note
You can determine the number of CPU units that are available per EC2 instance type by multiplying the vCPUs listed for that instance type on the Amazon EC2 Instances detail page by 1,024.
For example, if you run a single-container task on a single-core instance type with 512 CPU units specified for that container, and that is the only task running on the container instance, that container could use the full 1,024 CPU unit share at any given time. However, if you launched another copy of the same task on that container instance, each task would be guaranteed a minimum of 512 CPU units when needed, and each container could float to higher CPU usage if the other container was not using it, but if both tasks were 100% active all of the time, they would be limited to 512 CPU units.
The Docker daemon on the container instance uses the CPU value to calculate the relative CPU share ratios for running containers. For more information, see CPU share constraint in the Docker documentation. The minimum valid CPU share value that the Linux kernel allows is 2; however, the CPU parameter is not required, and you can use CPU values below 2 in your container definitions. For CPU values below 2 (including null), the behavior varies based on your Amazon ECS container agent version:
Agent versions less than or equal to 1.1.0: Null and zero CPU values are passed to Docker as 0, which Docker then converts to 1,024 CPU shares. CPU values of 1 are passed to Docker as 1, which the Linux kernel converts to 2 CPU shares.
Agent versions greater than or equal to 1.2.0: Null, zero, and CPU values of 1 are passed to Docker as 2.
memory (integer) --
The hard limit (in MiB) of memory to present to the container. If your container attempts to exceed the memory specified here, the container is killed. This parameter maps to Memory in the Create a container section of the Docker Remote API and the --memory option to docker run .
If your containers will be part of a task using the Fargate launch type, this field is optional and the only requirement is that the total amount of memory reserved for all containers within a task be lower than the task memory value.
For containers that will be part of a task using the EC2 launch type, you must specify a non-zero integer for one or both of memory or memoryReservation in container definitions. If you specify both, memory must be greater than memoryReservation . If you specify memoryReservation , then that value is subtracted from the available memory resources for the container instance on which the container is placed; otherwise, the value of memory is used.
The Docker daemon reserves a minimum of 4 MiB of memory for a container, so you should not specify fewer than 4 MiB of memory for your containers.
memoryReservation (integer) --
The soft limit (in MiB) of memory to reserve for the container. When system memory is under heavy contention, Docker attempts to keep the container memory to this soft limit; however, your container can consume more memory when it needs to, up to either the hard limit specified with the memory parameter (if applicable), or all of the available memory on the container instance, whichever comes first. This parameter maps to MemoryReservation in the Create a container section of the Docker Remote API and the --memory-reservation option to docker run .
You must specify a non-zero integer for one or both of memory or memoryReservation in container definitions. If you specify both, memory must be greater than memoryReservation . If you specify memoryReservation , then that value is subtracted from the available memory resources for the container instance on which the container is placed; otherwise, the value of memory is used.
For example, if your container normally uses 128 MiB of memory, but occasionally bursts to 256 MiB of memory for short periods of time, you can set a memoryReservation of 128 MiB, and a memory hard limit of 300 MiB. This configuration would allow the container to only reserve 128 MiB of memory from the remaining resources on the container instance, but also allow the container to consume more memory resources when needed.
links (list) --
The link parameter allows containers to communicate with each other without the need for port mappings, using the name parameter and optionally, an alias for the link. This construct is analogous to name:alias in Docker links. This field is not valid for containers in tasks using the Fargate launch type. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed for each name and alias . For more information on linking Docker containers, see https://docs.docker.com/engine/userguide/networking/default_network/dockerlinks/ . This parameter maps to Links in the Create a container section of the Docker Remote API and the --link option to docker run .
Warning
Containers that are collocated on a single container instance may be able to communicate with each other without requiring links or host port mappings. Network isolation is achieved on the container instance using security groups and VPC settings.
(string) --
portMappings (list) --
The list of port mappings for the container. Port mappings allow containers to access ports on the host container instance to send or receive traffic.
If using containers in a task with the Fargate, exposed ports should be specified using containerPort . The hostPort can be left blank or it must be the same value as the containerPort .
This parameter maps to PortBindings in the Create a container section of the Docker Remote API and the --publish option to docker run . If the network mode of a task definition is set to none , then you can't specify port mappings. If the network mode of a task definition is set to host , then host ports must either be undefined or they must match the container port in the port mapping.
Note
After a task reaches the RUNNING status, manual and automatic host and container port assignments are visible in the Network Bindings section of a container description for a selected task in the Amazon ECS console, or the networkBindings section DescribeTasks responses.
(dict) --
Port mappings allow containers to access ports on the host container instance to send or receive traffic. Port mappings are specified as part of the container definition.
If using containers in a task with the Fargate launch type, exposed ports should be specified using containerPort . The hostPort can be left blank or it must be the same value as the containerPort .
After a task reaches the RUNNING status, manual and automatic host and container port assignments are visible in the networkBindings section of DescribeTasks API responses.
containerPort (integer) --
The port number on the container that is bound to the user-specified or automatically assigned host port.
If using containers in a task with the Fargate launch type, exposed ports should be specified using containerPort .
If using containers in a task with the EC2 launch type and you specify a container port and not a host port, your container automatically receives a host port in the ephemeral port range (for more information, see hostPort ). Port mappings that are automatically assigned in this way do not count toward the 100 reserved ports limit of a container instance.
hostPort (integer) --
The port number on the container instance to reserve for your container.
If using containers in a task with the Fargate launch type, the hostPort can either be left blank or needs to be the same value as the containerPort .
If using containers in a task with the EC2 launch type, you can specify a non-reserved host port for your container port mapping, or you can omit the hostPort (or set it to 0 ) while specifying a containerPort and your container automatically receives a port in the ephemeral port range for your container instance operating system and Docker version.
The default ephemeral port range for Docker version 1.6.0 and later is listed on the instance under /proc/sys/net/ipv4/ip_local_port_range ; if this kernel parameter is unavailable, the default ephemeral port range from 49153 through 65535 is used. You should not attempt to specify a host port in the ephemeral port range as these are reserved for automatic assignment. In general, ports below 32768 are outside of the ephemeral port range.
Note
The default ephemeral port range from 49153 through 65535 is always used for Docker versions before 1.6.0.
The default reserved ports are 22 for SSH, the Docker ports 2375 and 2376, and the Amazon ECS container agent ports 51678 and 51679. Any host port that was previously specified in a running task is also reserved while the task is running (after a task stops, the host port is released). The current reserved ports are displayed in the remainingResources of DescribeContainerInstances output, and a container instance may have up to 100 reserved ports at a time, including the default reserved ports (automatically assigned ports do not count toward the 100 reserved ports limit).
protocol (string) --
The protocol used for the port mapping. Valid values are tcp and udp . The default is tcp .
essential (boolean) --
If the essential parameter of a container is marked as true , and that container fails or stops for any reason, all other containers that are part of the task are stopped. If the essential parameter of a container is marked as false , then its failure does not affect the rest of the containers in a task. If this parameter is omitted, a container is assumed to be essential.
All tasks must have at least one essential container. If you have an application that is composed of multiple containers, you should group containers that are used for a common purpose into components, and separate the different components into multiple task definitions. For more information, see Application Architecture in the Amazon Elastic Container Service Developer Guide .
entryPoint (list) --
Warning
Early versions of the Amazon ECS container agent do not properly handle entryPoint parameters. If you have problems using entryPoint , update your container agent or enter your commands and arguments as command array items instead.
The entry point that is passed to the container. This parameter maps to Entrypoint in the Create a container section of the Docker Remote API and the --entrypoint option to docker run . For more information, see https://docs.docker.com/engine/reference/builder/#entrypoint .
(string) --
command (list) --
The command that is passed to the container. This parameter maps to Cmd in the Create a container section of the Docker Remote API and the COMMAND parameter to docker run . For more information, see https://docs.docker.com/engine/reference/builder/#cmd .
(string) --
environment (list) --
The environment variables to pass to a container. This parameter maps to Env in the Create a container section of the Docker Remote API and the --env option to docker run .
Warning
We do not recommend using plaintext environment variables for sensitive information, such as credential data.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
mountPoints (list) --
The mount points for data volumes in your container.
If using the Fargate launch type, the sourceVolume parameter is not supported.
This parameter maps to Volumes in the Create a container section of the Docker Remote API and the --volume option to docker run .
(dict) --
Details on a volume mount point that is used in a container definition.
sourceVolume (string) --
The name of the volume to mount. If using the Fargate launch type, the sourceVolume parameter is not supported.
containerPath (string) --
The path on the container to mount the host volume at.
readOnly (boolean) --
If this value is true , the container has read-only access to the volume. If this value is false , then the container can write to the volume. The default value is false .
volumesFrom (list) --
Data volumes to mount from another container. This parameter maps to VolumesFrom in the Create a container section of the Docker Remote API and the --volumes-from option to docker run .
(dict) --
Details on a data volume from another container in the same task definition.
sourceContainer (string) --
The name of another container within the same task definition to mount volumes from.
readOnly (boolean) --
If this value is true , the container has read-only access to the volume. If this value is false , then the container can write to the volume. The default value is false .
linuxParameters (dict) --
Linux-specific modifications that are applied to the container, such as Linux KernelCapabilities . This field is not valid for containers in tasks using the Fargate launch type.
capabilities (dict) --
The Linux capabilities for the container that are added to or dropped from the default configuration provided by Docker.
add (list) --
The Linux capabilities for the container that have been added to the default configuration provided by Docker. This parameter maps to CapAdd in the Create a container section of the Docker Remote API and the --cap-add option to docker run .
Valid values: "ALL" | "AUDIT_CONTROL" | "AUDIT_WRITE" | "BLOCK_SUSPEND" | "CHOWN" | "DAC_OVERRIDE" | "DAC_READ_SEARCH" | "FOWNER" | "FSETID" | "IPC_LOCK" | "IPC_OWNER" | "KILL" | "LEASE" | "LINUX_IMMUTABLE" | "MAC_ADMIN" | "MAC_OVERRIDE" | "MKNOD" | "NET_ADMIN" | "NET_BIND_SERVICE" | "NET_BROADCAST" | "NET_RAW" | "SETFCAP" | "SETGID" | "SETPCAP" | "SETUID" | "SYS_ADMIN" | "SYS_BOOT" | "SYS_CHROOT" | "SYS_MODULE" | "SYS_NICE" | "SYS_PACCT" | "SYS_PTRACE" | "SYS_RAWIO" | "SYS_RESOURCE" | "SYS_TIME" | "SYS_TTY_CONFIG" | "SYSLOG" | "WAKE_ALARM"
(string) --
drop (list) --
The Linux capabilities for the container that have been removed from the default configuration provided by Docker. This parameter maps to CapDrop in the Create a container section of the Docker Remote API and the --cap-drop option to docker run .
Valid values: "ALL" | "AUDIT_CONTROL" | "AUDIT_WRITE" | "BLOCK_SUSPEND" | "CHOWN" | "DAC_OVERRIDE" | "DAC_READ_SEARCH" | "FOWNER" | "FSETID" | "IPC_LOCK" | "IPC_OWNER" | "KILL" | "LEASE" | "LINUX_IMMUTABLE" | "MAC_ADMIN" | "MAC_OVERRIDE" | "MKNOD" | "NET_ADMIN" | "NET_BIND_SERVICE" | "NET_BROADCAST" | "NET_RAW" | "SETFCAP" | "SETGID" | "SETPCAP" | "SETUID" | "SYS_ADMIN" | "SYS_BOOT" | "SYS_CHROOT" | "SYS_MODULE" | "SYS_NICE" | "SYS_PACCT" | "SYS_PTRACE" | "SYS_RAWIO" | "SYS_RESOURCE" | "SYS_TIME" | "SYS_TTY_CONFIG" | "SYSLOG" | "WAKE_ALARM"
(string) --
devices (list) --
Any host devices to expose to the container. This parameter maps to Devices in the Create a container section of the Docker Remote API and the --device option to docker run .
(dict) --
An object representing a container instance host device.
hostPath (string) -- [REQUIRED]
The path for the device on the host container instance.
containerPath (string) --
The path inside the container at which to expose the host device.
permissions (list) --
The explicit permissions to provide to the container for the device. By default, the container has permissions for read , write , and mknod for the device.
(string) --
initProcessEnabled (boolean) --
Run an init process inside the container that forwards signals and reaps processes. This parameter maps to the --init option to docker run . This parameter requires version 1.25 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 | grep "Server API version"
hostname (string) --
The hostname to use for your container. This parameter maps to Hostname in the Create a container section of the Docker Remote API and the --hostname option to docker run .
user (string) --
The user name to use inside the container. This parameter maps to User in the Create a container section of the Docker Remote API and the --user option to docker run .
workingDirectory (string) --
The working directory in which to run commands inside the container. This parameter maps to WorkingDir in the Create a container section of the Docker Remote API and the --workdir option to docker run .
disableNetworking (boolean) --
When this parameter is true, networking is disabled within the container. This parameter maps to NetworkDisabled in the Create a container section of the Docker Remote API .
privileged (boolean) --
When this parameter is true, the container is given elevated privileges on the host container instance (similar to the root user). This parameter maps to Privileged in the Create a container section of the Docker Remote API and the --privileged option to docker run .
readonlyRootFilesystem (boolean) --
When this parameter is true, the container is given read-only access to its root file system. This parameter maps to ReadonlyRootfs in the Create a container section of the Docker Remote API and the --read-only option to docker run .
dnsServers (list) --
A list of DNS servers that are presented to the container. This parameter maps to Dns in the Create a container section of the Docker Remote API and the --dns option to docker run .
(string) --
dnsSearchDomains (list) --
A list of DNS search domains that are presented to the container. This parameter maps to DnsSearch in the Create a container section of the Docker Remote API and the --dns-search option to docker run .
(string) --
extraHosts (list) --
A list of hostnames and IP address mappings to append to the /etc/hosts file on the container. If using the Fargate launch type, this may be used to list non-Fargate hosts you want the container to talk to. This parameter maps to ExtraHosts in the Create a container section of the Docker Remote API and the --add-host option to docker run .
(dict) --
Hostnames and IP address entries that are added to the /etc/hosts file of a container via the extraHosts parameter of its ContainerDefinition .
hostname (string) -- [REQUIRED]
The hostname to use in the /etc/hosts entry.
ipAddress (string) -- [REQUIRED]
The IP address to use in the /etc/hosts entry.
dockerSecurityOptions (list) --
A list of strings to provide custom labels for SELinux and AppArmor multi-level security systems. This field is not valid for containers in tasks using the Fargate launch type.
This parameter maps to SecurityOpt in the Create a container section of the Docker Remote API and the --security-opt option to docker run .
Note
The Amazon ECS container agent running on a container instance must register with the ECS_SELINUX_CAPABLE=true or ECS_APPARMOR_CAPABLE=true environment variables before containers placed on that instance can use these security options. For more information, see Amazon ECS Container Agent Configuration in the Amazon Elastic Container Service Developer Guide .
(string) --
dockerLabels (dict) --
A key/value map of labels to add to the container. This parameter maps to Labels in the Create a container section of the Docker Remote API and the --label option to docker run . This parameter requires version 1.18 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 | grep "Server API version"
(string) --
(string) --
ulimits (list) --
A list of ulimits to set in the container. This parameter maps to Ulimits in the Create a container section of the Docker Remote API and the --ulimit option to docker run . Valid naming values are displayed in the Ulimit data type. This parameter requires version 1.18 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 | grep "Server API version"
(dict) --
The ulimit settings to pass to the container.
name (string) -- [REQUIRED]
The type of the ulimit .
softLimit (integer) -- [REQUIRED]
The soft limit for the ulimit type.
hardLimit (integer) -- [REQUIRED]
The hard limit for the ulimit type.
logConfiguration (dict) --
The log configuration specification for the container.
If using the Fargate launch type, the only supported value is awslogs .
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 may use a different logging driver than the Docker daemon by specifying a log driver with this parameter in the container definition. To use a different logging driver for a container, the log system must be configured properly on the container instance (or on a different log server for remote logging options). For more information on the options for different supported log drivers, see Configure logging drivers in the Docker documentation.
Note
Amazon ECS currently supports a subset of the logging drivers available to the Docker daemon (shown in the LogConfiguration data type). 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. 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 | grep "Server API version"
Note
The Amazon ECS container agent running on a container instance must register the logging drivers available on that instance 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 .
logDriver (string) -- [REQUIRED]
The log driver to use for the container. The valid values listed for this parameter are log drivers that the Amazon ECS container agent can communicate with by default. If using the Fargate launch type, the only supported value is awslogs . For more information about using the awslogs driver, see Using the awslogs Log Driver in the Amazon Elastic Container Service Developer Guide .
Note
If you have a custom driver that is not listed above that you would like to work with the Amazon ECS container agent, you can fork the Amazon ECS container agent project that is 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, Amazon Web Services does not currently support running modified copies of this software.
This parameter requires version 1.18 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 | grep "Server API version"
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 | grep "Server API version"
(string) --
(string) --
list
A list of volume definitions in JSON format that containers in your task may use.
(dict) --
A data volume used in a task definition.
name (string) --
The name of the volume. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed. This name is referenced in the sourceVolume parameter of container definition mountPoints .
host (dict) --
The contents of the host parameter determine whether your data volume persists on the host container instance and where it is stored. If the host parameter is empty, then the Docker daemon assigns a host path for your data volume, but the data is not guaranteed to persist after the containers associated with it stop running.
If you are using the Fargate launch type, the host parameter is not supported.
sourcePath (string) --
The path on the host container instance that is presented to the container. If this parameter is empty, then the Docker daemon has assigned a host path for you. If the host parameter contains a sourcePath file location, then the data volume persists at the specified location on the host container instance until you delete it manually. If the sourcePath value does not exist on the host container instance, the Docker daemon creates it. If the location does exist, the contents of the source path folder are exported.
If you are using the Fargate launch type, the host parameter is not supported.
list
An array of placement constraint objects to use for the task. You can specify a maximum of 10 constraints per task (this limit includes constraints in the task definition and those specified at run time).
(dict) --
An object representing a constraint on task placement in the task definition.
If you are using the Fargate launch type, task placement contraints are not supported.
For more information, see Task Placement Constraints in the Amazon Elastic Container Service Developer Guide .
type (string) --
The type of constraint. The DistinctInstance constraint ensures that each task in a particular group is running on a different container instance. The MemberOf constraint restricts selection to be from a group of valid candidates.
expression (string) --
A cluster query language expression to apply to the constraint. For more information, see Cluster Query Language in the Amazon Elastic Container Service Developer Guide .
list
The launch type required by the task. If no value is specified, it defaults to EC2 .
(string) --
string
The number of cpu units used by the task. If using the EC2 launch type, this field is optional and any value can be used. If you are using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the memory parameter:
256 (.25 vCPU) - Available memory values: 512MB, 1GB, 2GB
512 (.5 vCPU) - Available memory values: 1GB, 2GB, 3GB, 4GB
1024 (1 vCPU) - Available memory values: 2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB
2048 (2 vCPU) - Available memory values: Between 4GB and 16GB in 1GB increments
4096 (4 vCPU) - Available memory values: Between 8GB and 30GB in 1GB increments
string
The amount (in MiB) of memory used by the task. If using the EC2 launch type, this field is optional and any value can be used. If you are using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the cpu parameter:
512MB, 1GB, 2GB - Available cpu values: 256 (.25 vCPU)
1GB, 2GB, 3GB, 4GB - Available cpu values: 512 (.5 vCPU)
2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB - Available cpu values: 1024 (1 vCPU)
Between 4GB and 16GB in 1GB increments - Available cpu values: 2048 (2 vCPU)
Between 8GB and 30GB in 1GB increments - Available cpu values: 4096 (4 vCPU)
dict
Response Syntax
{
'taskDefinition': {
'taskDefinitionArn': 'string',
'containerDefinitions': [
{
'name': 'string',
'image': 'string',
'cpu': 123,
'memory': 123,
'memoryReservation': 123,
'links': [
'string',
],
'portMappings': [
{
'containerPort': 123,
'hostPort': 123,
'protocol': 'tcp'|'udp'
},
],
'essential': True|False,
'entryPoint': [
'string',
],
'command': [
'string',
],
'environment': [
{
'name': 'string',
'value': 'string'
},
],
'mountPoints': [
{
'sourceVolume': 'string',
'containerPath': 'string',
'readOnly': True|False
},
],
'volumesFrom': [
{
'sourceContainer': 'string',
'readOnly': True|False
},
],
'linuxParameters': {
'capabilities': {
'add': [
'string',
],
'drop': [
'string',
]
},
'devices': [
{
'hostPath': 'string',
'containerPath': 'string',
'permissions': [
'read'|'write'|'mknod',
]
},
],
'initProcessEnabled': True|False
},
'hostname': 'string',
'user': 'string',
'workingDirectory': 'string',
'disableNetworking': True|False,
'privileged': True|False,
'readonlyRootFilesystem': True|False,
'dnsServers': [
'string',
],
'dnsSearchDomains': [
'string',
],
'extraHosts': [
{
'hostname': 'string',
'ipAddress': 'string'
},
],
'dockerSecurityOptions': [
'string',
],
'dockerLabels': {
'string': 'string'
},
'ulimits': [
{
'name': 'core'|'cpu'|'data'|'fsize'|'locks'|'memlock'|'msgqueue'|'nice'|'nofile'|'nproc'|'rss'|'rtprio'|'rttime'|'sigpending'|'stack',
'softLimit': 123,
'hardLimit': 123
},
],
'logConfiguration': {
'logDriver': 'json-file'|'syslog'|'journald'|'gelf'|'fluentd'|'awslogs'|'splunk',
'options': {
'string': 'string'
}
}
},
],
'family': 'string',
'taskRoleArn': 'string',
'executionRoleArn': 'string',
'networkMode': 'bridge'|'host'|'awsvpc'|'none',
'revision': 123,
'volumes': [
{
'name': 'string',
'host': {
'sourcePath': 'string'
}
},
],
'status': 'ACTIVE'|'INACTIVE',
'requiresAttributes': [
{
'name': 'string',
'value': 'string',
'targetType': 'container-instance',
'targetId': 'string'
},
],
'placementConstraints': [
{
'type': 'memberOf',
'expression': 'string'
},
],
'compatibilities': [
'EC2'|'FARGATE',
],
'requiresCompatibilities': [
'EC2'|'FARGATE',
],
'cpu': 'string',
'memory': 'string'
}
}
Response Structure
(dict) --
taskDefinition (dict) --
The full description of the registered task definition.
taskDefinitionArn (string) --
The full Amazon Resource Name (ARN) of the task definition.
containerDefinitions (list) --
A list of container definitions in JSON format that describe the different containers that make up your task. For more information about container definition parameters and defaults, see Amazon ECS Task Definitions in the Amazon Elastic Container Service Developer Guide .
(dict) --
Container definitions are used in task definitions to describe the different containers that are launched as part of a task.
name (string) --
The name of a container. If you are linking multiple containers together in a task definition, the name of one container can be entered in the links of another container to connect the containers. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed. This parameter maps to name in the Create a container section of the Docker Remote API and the --name option to docker run .
image (string) --
The image used to start a container. This string is passed directly to the Docker daemon. Images in the Docker Hub registry are available by default. Other repositories are specified with either `` repository-url /image :tag `` or `` repository-url /image @*digest* `` . Up to 255 letters (uppercase and lowercase), numbers, hyphens, underscores, colons, periods, forward slashes, and number signs are allowed. This parameter maps to Image in the Create a container section of the Docker Remote API and the IMAGE parameter of docker run .
Images in Amazon ECR repositories can be specified by either using the full registry/repository:tag or registry/repository@digest . For example, 012345678910.dkr.ecr.<region-name>.amazonaws.com/<repository-name>:latest or 012345678910.dkr.ecr.<region-name>.amazonaws.com/<repository-name>@sha256:94afd1f2e64d908bc90dbca0035a5b567EXAMPLE .
Images in official repositories on Docker Hub use a single name (for example, ubuntu or mongo ).
Images in other repositories on Docker Hub are qualified with an organization name (for example, amazon/amazon-ecs-agent ).
Images in other online repositories are qualified further by a domain name (for example, quay.io/assemblyline/ubuntu ).
cpu (integer) --
The number of cpu units reserved for the container. If your containers will be part of a task using the Fargate launch type, this field is optional and the only requirement is that the total amount of CPU reserved for all containers within a task be lower than the task cpu value.
For containers that will be part of a task using the EC2 launch type, a container instance has 1,024 cpu units for every CPU core. This parameter specifies the minimum amount of CPU to reserve for a container, and containers share unallocated CPU units with other containers on the instance with the same ratio as their allocated amount. This parameter maps to CpuShares in the Create a container section of the Docker Remote API and the --cpu-shares option to docker run .
Note
You can determine the number of CPU units that are available per EC2 instance type by multiplying the vCPUs listed for that instance type on the Amazon EC2 Instances detail page by 1,024.
For example, if you run a single-container task on a single-core instance type with 512 CPU units specified for that container, and that is the only task running on the container instance, that container could use the full 1,024 CPU unit share at any given time. However, if you launched another copy of the same task on that container instance, each task would be guaranteed a minimum of 512 CPU units when needed, and each container could float to higher CPU usage if the other container was not using it, but if both tasks were 100% active all of the time, they would be limited to 512 CPU units.
The Docker daemon on the container instance uses the CPU value to calculate the relative CPU share ratios for running containers. For more information, see CPU share constraint in the Docker documentation. The minimum valid CPU share value that the Linux kernel allows is 2; however, the CPU parameter is not required, and you can use CPU values below 2 in your container definitions. For CPU values below 2 (including null), the behavior varies based on your Amazon ECS container agent version:
Agent versions less than or equal to 1.1.0: Null and zero CPU values are passed to Docker as 0, which Docker then converts to 1,024 CPU shares. CPU values of 1 are passed to Docker as 1, which the Linux kernel converts to 2 CPU shares.
Agent versions greater than or equal to 1.2.0: Null, zero, and CPU values of 1 are passed to Docker as 2.
memory (integer) --
The hard limit (in MiB) of memory to present to the container. If your container attempts to exceed the memory specified here, the container is killed. This parameter maps to Memory in the Create a container section of the Docker Remote API and the --memory option to docker run .
If your containers will be part of a task using the Fargate launch type, this field is optional and the only requirement is that the total amount of memory reserved for all containers within a task be lower than the task memory value.
For containers that will be part of a task using the EC2 launch type, you must specify a non-zero integer for one or both of memory or memoryReservation in container definitions. If you specify both, memory must be greater than memoryReservation . If you specify memoryReservation , then that value is subtracted from the available memory resources for the container instance on which the container is placed; otherwise, the value of memory is used.
The Docker daemon reserves a minimum of 4 MiB of memory for a container, so you should not specify fewer than 4 MiB of memory for your containers.
memoryReservation (integer) --
The soft limit (in MiB) of memory to reserve for the container. When system memory is under heavy contention, Docker attempts to keep the container memory to this soft limit; however, your container can consume more memory when it needs to, up to either the hard limit specified with the memory parameter (if applicable), or all of the available memory on the container instance, whichever comes first. This parameter maps to MemoryReservation in the Create a container section of the Docker Remote API and the --memory-reservation option to docker run .
You must specify a non-zero integer for one or both of memory or memoryReservation in container definitions. If you specify both, memory must be greater than memoryReservation . If you specify memoryReservation , then that value is subtracted from the available memory resources for the container instance on which the container is placed; otherwise, the value of memory is used.
For example, if your container normally uses 128 MiB of memory, but occasionally bursts to 256 MiB of memory for short periods of time, you can set a memoryReservation of 128 MiB, and a memory hard limit of 300 MiB. This configuration would allow the container to only reserve 128 MiB of memory from the remaining resources on the container instance, but also allow the container to consume more memory resources when needed.
links (list) --
The link parameter allows containers to communicate with each other without the need for port mappings, using the name parameter and optionally, an alias for the link. This construct is analogous to name:alias in Docker links. This field is not valid for containers in tasks using the Fargate launch type. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed for each name and alias . For more information on linking Docker containers, see https://docs.docker.com/engine/userguide/networking/default_network/dockerlinks/ . This parameter maps to Links in the Create a container section of the Docker Remote API and the --link option to docker run .
Warning
Containers that are collocated on a single container instance may be able to communicate with each other without requiring links or host port mappings. Network isolation is achieved on the container instance using security groups and VPC settings.
(string) --
portMappings (list) --
The list of port mappings for the container. Port mappings allow containers to access ports on the host container instance to send or receive traffic.
If using containers in a task with the Fargate, exposed ports should be specified using containerPort . The hostPort can be left blank or it must be the same value as the containerPort .
This parameter maps to PortBindings in the Create a container section of the Docker Remote API and the --publish option to docker run . If the network mode of a task definition is set to none , then you can't specify port mappings. If the network mode of a task definition is set to host , then host ports must either be undefined or they must match the container port in the port mapping.
Note
After a task reaches the RUNNING status, manual and automatic host and container port assignments are visible in the Network Bindings section of a container description for a selected task in the Amazon ECS console, or the networkBindings section DescribeTasks responses.
(dict) --
Port mappings allow containers to access ports on the host container instance to send or receive traffic. Port mappings are specified as part of the container definition.
If using containers in a task with the Fargate launch type, exposed ports should be specified using containerPort . The hostPort can be left blank or it must be the same value as the containerPort .
After a task reaches the RUNNING status, manual and automatic host and container port assignments are visible in the networkBindings section of DescribeTasks API responses.
containerPort (integer) --
The port number on the container that is bound to the user-specified or automatically assigned host port.
If using containers in a task with the Fargate launch type, exposed ports should be specified using containerPort .
If using containers in a task with the EC2 launch type and you specify a container port and not a host port, your container automatically receives a host port in the ephemeral port range (for more information, see hostPort ). Port mappings that are automatically assigned in this way do not count toward the 100 reserved ports limit of a container instance.
hostPort (integer) --
The port number on the container instance to reserve for your container.
If using containers in a task with the Fargate launch type, the hostPort can either be left blank or needs to be the same value as the containerPort .
If using containers in a task with the EC2 launch type, you can specify a non-reserved host port for your container port mapping, or you can omit the hostPort (or set it to 0 ) while specifying a containerPort and your container automatically receives a port in the ephemeral port range for your container instance operating system and Docker version.
The default ephemeral port range for Docker version 1.6.0 and later is listed on the instance under /proc/sys/net/ipv4/ip_local_port_range ; if this kernel parameter is unavailable, the default ephemeral port range from 49153 through 65535 is used. You should not attempt to specify a host port in the ephemeral port range as these are reserved for automatic assignment. In general, ports below 32768 are outside of the ephemeral port range.
Note
The default ephemeral port range from 49153 through 65535 is always used for Docker versions before 1.6.0.
The default reserved ports are 22 for SSH, the Docker ports 2375 and 2376, and the Amazon ECS container agent ports 51678 and 51679. Any host port that was previously specified in a running task is also reserved while the task is running (after a task stops, the host port is released). The current reserved ports are displayed in the remainingResources of DescribeContainerInstances output, and a container instance may have up to 100 reserved ports at a time, including the default reserved ports (automatically assigned ports do not count toward the 100 reserved ports limit).
protocol (string) --
The protocol used for the port mapping. Valid values are tcp and udp . The default is tcp .
essential (boolean) --
If the essential parameter of a container is marked as true , and that container fails or stops for any reason, all other containers that are part of the task are stopped. If the essential parameter of a container is marked as false , then its failure does not affect the rest of the containers in a task. If this parameter is omitted, a container is assumed to be essential.
All tasks must have at least one essential container. If you have an application that is composed of multiple containers, you should group containers that are used for a common purpose into components, and separate the different components into multiple task definitions. For more information, see Application Architecture in the Amazon Elastic Container Service Developer Guide .
entryPoint (list) --
Warning
Early versions of the Amazon ECS container agent do not properly handle entryPoint parameters. If you have problems using entryPoint , update your container agent or enter your commands and arguments as command array items instead.
The entry point that is passed to the container. This parameter maps to Entrypoint in the Create a container section of the Docker Remote API and the --entrypoint option to docker run . For more information, see https://docs.docker.com/engine/reference/builder/#entrypoint .
(string) --
command (list) --
The command that is passed to the container. This parameter maps to Cmd in the Create a container section of the Docker Remote API and the COMMAND parameter to docker run . For more information, see https://docs.docker.com/engine/reference/builder/#cmd .
(string) --
environment (list) --
The environment variables to pass to a container. This parameter maps to Env in the Create a container section of the Docker Remote API and the --env option to docker run .
Warning
We do not recommend using plaintext environment variables for sensitive information, such as credential data.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
mountPoints (list) --
The mount points for data volumes in your container.
If using the Fargate launch type, the sourceVolume parameter is not supported.
This parameter maps to Volumes in the Create a container section of the Docker Remote API and the --volume option to docker run .
(dict) --
Details on a volume mount point that is used in a container definition.
sourceVolume (string) --
The name of the volume to mount. If using the Fargate launch type, the sourceVolume parameter is not supported.
containerPath (string) --
The path on the container to mount the host volume at.
readOnly (boolean) --
If this value is true , the container has read-only access to the volume. If this value is false , then the container can write to the volume. The default value is false .
volumesFrom (list) --
Data volumes to mount from another container. This parameter maps to VolumesFrom in the Create a container section of the Docker Remote API and the --volumes-from option to docker run .
(dict) --
Details on a data volume from another container in the same task definition.
sourceContainer (string) --
The name of another container within the same task definition to mount volumes from.
readOnly (boolean) --
If this value is true , the container has read-only access to the volume. If this value is false , then the container can write to the volume. The default value is false .
linuxParameters (dict) --
Linux-specific modifications that are applied to the container, such as Linux KernelCapabilities . This field is not valid for containers in tasks using the Fargate launch type.
capabilities (dict) --
The Linux capabilities for the container that are added to or dropped from the default configuration provided by Docker.
add (list) --
The Linux capabilities for the container that have been added to the default configuration provided by Docker. This parameter maps to CapAdd in the Create a container section of the Docker Remote API and the --cap-add option to docker run .
Valid values: "ALL" | "AUDIT_CONTROL" | "AUDIT_WRITE" | "BLOCK_SUSPEND" | "CHOWN" | "DAC_OVERRIDE" | "DAC_READ_SEARCH" | "FOWNER" | "FSETID" | "IPC_LOCK" | "IPC_OWNER" | "KILL" | "LEASE" | "LINUX_IMMUTABLE" | "MAC_ADMIN" | "MAC_OVERRIDE" | "MKNOD" | "NET_ADMIN" | "NET_BIND_SERVICE" | "NET_BROADCAST" | "NET_RAW" | "SETFCAP" | "SETGID" | "SETPCAP" | "SETUID" | "SYS_ADMIN" | "SYS_BOOT" | "SYS_CHROOT" | "SYS_MODULE" | "SYS_NICE" | "SYS_PACCT" | "SYS_PTRACE" | "SYS_RAWIO" | "SYS_RESOURCE" | "SYS_TIME" | "SYS_TTY_CONFIG" | "SYSLOG" | "WAKE_ALARM"
(string) --
drop (list) --
The Linux capabilities for the container that have been removed from the default configuration provided by Docker. This parameter maps to CapDrop in the Create a container section of the Docker Remote API and the --cap-drop option to docker run .
Valid values: "ALL" | "AUDIT_CONTROL" | "AUDIT_WRITE" | "BLOCK_SUSPEND" | "CHOWN" | "DAC_OVERRIDE" | "DAC_READ_SEARCH" | "FOWNER" | "FSETID" | "IPC_LOCK" | "IPC_OWNER" | "KILL" | "LEASE" | "LINUX_IMMUTABLE" | "MAC_ADMIN" | "MAC_OVERRIDE" | "MKNOD" | "NET_ADMIN" | "NET_BIND_SERVICE" | "NET_BROADCAST" | "NET_RAW" | "SETFCAP" | "SETGID" | "SETPCAP" | "SETUID" | "SYS_ADMIN" | "SYS_BOOT" | "SYS_CHROOT" | "SYS_MODULE" | "SYS_NICE" | "SYS_PACCT" | "SYS_PTRACE" | "SYS_RAWIO" | "SYS_RESOURCE" | "SYS_TIME" | "SYS_TTY_CONFIG" | "SYSLOG" | "WAKE_ALARM"
(string) --
devices (list) --
Any host devices to expose to the container. This parameter maps to Devices in the Create a container section of the Docker Remote API and the --device option to docker run .
(dict) --
An object representing a container instance host device.
hostPath (string) --
The path for the device on the host container instance.
containerPath (string) --
The path inside the container at which to expose the host device.
permissions (list) --
The explicit permissions to provide to the container for the device. By default, the container has permissions for read , write , and mknod for the device.
(string) --
initProcessEnabled (boolean) --
Run an init process inside the container that forwards signals and reaps processes. This parameter maps to the --init option to docker run . This parameter requires version 1.25 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 | grep "Server API version"
hostname (string) --
The hostname to use for your container. This parameter maps to Hostname in the Create a container section of the Docker Remote API and the --hostname option to docker run .
user (string) --
The user name to use inside the container. This parameter maps to User in the Create a container section of the Docker Remote API and the --user option to docker run .
workingDirectory (string) --
The working directory in which to run commands inside the container. This parameter maps to WorkingDir in the Create a container section of the Docker Remote API and the --workdir option to docker run .
disableNetworking (boolean) --
When this parameter is true, networking is disabled within the container. This parameter maps to NetworkDisabled in the Create a container section of the Docker Remote API .
privileged (boolean) --
When this parameter is true, the container is given elevated privileges on the host container instance (similar to the root user). This parameter maps to Privileged in the Create a container section of the Docker Remote API and the --privileged option to docker run .
readonlyRootFilesystem (boolean) --
When this parameter is true, the container is given read-only access to its root file system. This parameter maps to ReadonlyRootfs in the Create a container section of the Docker Remote API and the --read-only option to docker run .
dnsServers (list) --
A list of DNS servers that are presented to the container. This parameter maps to Dns in the Create a container section of the Docker Remote API and the --dns option to docker run .
(string) --
dnsSearchDomains (list) --
A list of DNS search domains that are presented to the container. This parameter maps to DnsSearch in the Create a container section of the Docker Remote API and the --dns-search option to docker run .
(string) --
extraHosts (list) --
A list of hostnames and IP address mappings to append to the /etc/hosts file on the container. If using the Fargate launch type, this may be used to list non-Fargate hosts you want the container to talk to. This parameter maps to ExtraHosts in the Create a container section of the Docker Remote API and the --add-host option to docker run .
(dict) --
Hostnames and IP address entries that are added to the /etc/hosts file of a container via the extraHosts parameter of its ContainerDefinition .
hostname (string) --
The hostname to use in the /etc/hosts entry.
ipAddress (string) --
The IP address to use in the /etc/hosts entry.
dockerSecurityOptions (list) --
A list of strings to provide custom labels for SELinux and AppArmor multi-level security systems. This field is not valid for containers in tasks using the Fargate launch type.
This parameter maps to SecurityOpt in the Create a container section of the Docker Remote API and the --security-opt option to docker run .
Note
The Amazon ECS container agent running on a container instance must register with the ECS_SELINUX_CAPABLE=true or ECS_APPARMOR_CAPABLE=true environment variables before containers placed on that instance can use these security options. For more information, see Amazon ECS Container Agent Configuration in the Amazon Elastic Container Service Developer Guide .
(string) --
dockerLabels (dict) --
A key/value map of labels to add to the container. This parameter maps to Labels in the Create a container section of the Docker Remote API and the --label option to docker run . This parameter requires version 1.18 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 | grep "Server API version"
(string) --
(string) --
ulimits (list) --
A list of ulimits to set in the container. This parameter maps to Ulimits in the Create a container section of the Docker Remote API and the --ulimit option to docker run . Valid naming values are displayed in the Ulimit data type. This parameter requires version 1.18 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 | grep "Server API version"
(dict) --
The ulimit settings to pass to the container.
name (string) --
The type of the ulimit .
softLimit (integer) --
The soft limit for the ulimit type.
hardLimit (integer) --
The hard limit for the ulimit type.
logConfiguration (dict) --
The log configuration specification for the container.
If using the Fargate launch type, the only supported value is awslogs .
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 may use a different logging driver than the Docker daemon by specifying a log driver with this parameter in the container definition. To use a different logging driver for a container, the log system must be configured properly on the container instance (or on a different log server for remote logging options). For more information on the options for different supported log drivers, see Configure logging drivers in the Docker documentation.
Note
Amazon ECS currently supports a subset of the logging drivers available to the Docker daemon (shown in the LogConfiguration data type). 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. 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 | grep "Server API version"
Note
The Amazon ECS container agent running on a container instance must register the logging drivers available on that instance 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 .
logDriver (string) --
The log driver to use for the container. The valid values listed for this parameter are log drivers that the Amazon ECS container agent can communicate with by default. If using the Fargate launch type, the only supported value is awslogs . For more information about using the awslogs driver, see Using the awslogs Log Driver in the Amazon Elastic Container Service Developer Guide .
Note
If you have a custom driver that is not listed above that you would like to work with the Amazon ECS container agent, you can fork the Amazon ECS container agent project that is 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, Amazon Web Services does not currently support running modified copies of this software.
This parameter requires version 1.18 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 | grep "Server API version"
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 | grep "Server API version"
(string) --
(string) --
family (string) --
The family of your task definition, used as the definition name.
taskRoleArn (string) --
The ARN of the IAM role that containers in this task can assume. All containers in this task are granted the permissions that are specified in this role.
executionRoleArn (string) --
The Amazon Resource Name (ARN) of the task execution role that the Amazon ECS container agent and the Docker daemon can assume.
networkMode (string) --
The Docker networking mode to use for the containers in the task. The valid values are none , bridge , awsvpc , and host . The default Docker network mode is bridge . If using the Fargate launch type, the awsvpc network mode is required. If using the EC2 launch type, any network mode can be used. If the network mode is set to none , you can't specify port mappings in your container definitions, and the task's containers do not have external connectivity. The host and awsvpc network modes offer the highest networking performance for containers because they use the EC2 network stack instead of the virtualized network stack provided by the bridge mode.
With the host and awsvpc network modes, exposed container ports are mapped directly to the corresponding host port (for the host network mode) or the attached elastic network interface port (for the awsvpc network mode), so you cannot take advantage of dynamic host port mappings.
If the network mode is awsvpc , the task is allocated an Elastic Network Interface, and you must specify a NetworkConfiguration when you create a service or run a task with the task definition. For more information, see Task Networking in the Amazon Elastic Container Service Developer Guide .
If the network mode is host , you can't run multiple instantiations of the same task on a single container instance when port mappings are used.
For more information, see Network settings in the Docker run reference .
revision (integer) --
The revision of the task in a particular family. The revision is a version number of a task definition in a family. When you register a task definition for the first time, the revision is 1 ; each time you register a new revision of a task definition in the same family, the revision value always increases by one (even if you have deregistered previous revisions in this family).
volumes (list) --
The list of volumes in a task.
If you are using the Fargate launch type, the host and sourcePath parameters are not supported.
For more information about volume definition parameters and defaults, see Amazon ECS Task Definitions in the Amazon Elastic Container Service Developer Guide .
(dict) --
A data volume used in a task definition.
name (string) --
The name of the volume. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed. This name is referenced in the sourceVolume parameter of container definition mountPoints .
host (dict) --
The contents of the host parameter determine whether your data volume persists on the host container instance and where it is stored. If the host parameter is empty, then the Docker daemon assigns a host path for your data volume, but the data is not guaranteed to persist after the containers associated with it stop running.
If you are using the Fargate launch type, the host parameter is not supported.
sourcePath (string) --
The path on the host container instance that is presented to the container. If this parameter is empty, then the Docker daemon has assigned a host path for you. If the host parameter contains a sourcePath file location, then the data volume persists at the specified location on the host container instance until you delete it manually. If the sourcePath value does not exist on the host container instance, the Docker daemon creates it. If the location does exist, the contents of the source path folder are exported.
If you are using the Fargate launch type, the host parameter is not supported.
status (string) --
The status of the task definition.
requiresAttributes (list) --
The container instance attributes required by your task. This field is not valid if using the Fargate launch type for your task.
(dict) --
An attribute is a name-value pair associated with an Amazon ECS object. Attributes enable you to extend the Amazon ECS data model by adding custom metadata to your resources. For more information, see Attributes in the Amazon Elastic Container Service Developer Guide .
name (string) --
The name of the attribute. Up to 128 letters (uppercase and lowercase), numbers, hyphens, underscores, and periods are allowed.
value (string) --
The value of the attribute. Up to 128 letters (uppercase and lowercase), numbers, hyphens, underscores, periods, at signs (@), forward slashes, colons, and spaces are allowed.
targetType (string) --
The type of the target with which to attach the attribute. This parameter is required if you use the short form ID for a resource instead of the full ARN.
targetId (string) --
The ID of the target. You can specify the short form ID for a resource or the full Amazon Resource Name (ARN).
placementConstraints (list) --
An array of placement constraint objects to use for tasks. This field is not valid if using the Fargate launch type for your task.
(dict) --
An object representing a constraint on task placement in the task definition.
If you are using the Fargate launch type, task placement contraints are not supported.
For more information, see Task Placement Constraints in the Amazon Elastic Container Service Developer Guide .
type (string) --
The type of constraint. The DistinctInstance constraint ensures that each task in a particular group is running on a different container instance. The MemberOf constraint restricts selection to be from a group of valid candidates.
expression (string) --
A cluster query language expression to apply to the constraint. For more information, see Cluster Query Language in the Amazon Elastic Container Service Developer Guide .
compatibilities (list) --
The launch type to use with your task. For more information, see Amazon ECS Launch Types in the Amazon Elastic Container Service Developer Guide .
(string) --
requiresCompatibilities (list) --
The launch type the task is using.
(string) --
cpu (string) --
The number of cpu units used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the memory parameter:
256 (.25 vCPU) - Available memory values: 512MB, 1GB, 2GB
512 (.5 vCPU) - Available memory values: 1GB, 2GB, 3GB, 4GB
1024 (1 vCPU) - Available memory values: 2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB
2048 (2 vCPU) - Available memory values: Between 4GB and 16GB in 1GB increments
4096 (4 vCPU) - Available memory values: Between 8GB and 30GB in 1GB increments
memory (string) --
The amount (in MiB) of memory used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the cpu parameter:
512MB, 1GB, 2GB - Available cpu values: 256 (.25 vCPU)
1GB, 2GB, 3GB, 4GB - Available cpu values: 512 (.5 vCPU)
2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB - Available cpu values: 1024 (1 vCPU)
Between 4GB and 16GB in 1GB increments - Available cpu values: 2048 (2 vCPU)
Between 8GB and 30GB in 1GB increments - Available cpu values: 4096 (4 vCPU)
{'launchType': 'EC2 | FARGATE',
'networkConfiguration': {'awsvpcConfiguration': {'assignPublicIp': 'ENABLED | '
'DISABLED'}},
'overrides': {'executionRoleArn': 'string'},
'platformVersion': 'string'}
Response {'tasks': {'connectivity': 'CONNECTED | DISCONNECTED',
'connectivityAt': 'timestamp',
'cpu': 'string',
'executionStoppedAt': 'timestamp',
'launchType': 'EC2 | FARGATE',
'memory': 'string',
'overrides': {'executionRoleArn': 'string'},
'platformVersion': 'string',
'pullStartedAt': 'timestamp',
'pullStoppedAt': 'timestamp',
'stoppingAt': 'timestamp'}}
Starts a new task using the specified task definition.
You can allow Amazon ECS to place tasks for you, or you can customize how Amazon ECS places tasks using placement constraints and placement strategies. For more information, see Scheduling Tasks in the Amazon Elastic Container Service Developer Guide .
Alternatively, you can use StartTask to use your own scheduler or place tasks manually on specific container instances.
See also: AWS API Documentation
Request Syntax
client.run_task(
cluster='string',
taskDefinition='string',
overrides={
'containerOverrides': [
{
'name': 'string',
'command': [
'string',
],
'environment': [
{
'name': 'string',
'value': 'string'
},
],
'cpu': 123,
'memory': 123,
'memoryReservation': 123
},
],
'taskRoleArn': 'string',
'executionRoleArn': 'string'
},
count=123,
startedBy='string',
group='string',
placementConstraints=[
{
'type': 'distinctInstance'|'memberOf',
'expression': 'string'
},
],
placementStrategy=[
{
'type': 'random'|'spread'|'binpack',
'field': 'string'
},
],
launchType='EC2'|'FARGATE',
platformVersion='string',
networkConfiguration={
'awsvpcConfiguration': {
'subnets': [
'string',
],
'securityGroups': [
'string',
],
'assignPublicIp': 'ENABLED'|'DISABLED'
}
}
)
string
The short name or full Amazon Resource Name (ARN) of the cluster on which to run your task. If you do not specify a cluster, the default cluster is assumed.
string
[REQUIRED]
The family and revision (family:revision ) or full ARN of the task definition to run. If a revision is not specified, the latest ACTIVE revision is used.
dict
A list of container overrides in JSON format that specify the name of a container in the specified task definition and the overrides it should receive. You can override the default command for a container (that is specified in the task definition or Docker image) with a command override. You can also override existing environment variables (that are specified in the task definition or Docker image) on a container or add new environment variables to it with an environment override.
Note
A total of 8192 characters are allowed for overrides. This limit includes the JSON formatting characters of the override structure.
containerOverrides (list) --
One or more container overrides sent to a task.
(dict) --
The overrides that should be sent to a container.
name (string) --
The name of the container that receives the override. This parameter is required if any override is specified.
command (list) --
The command to send to the container that overrides the default command from the Docker image or the task definition. You must also specify a container name.
(string) --
environment (list) --
The environment variables to send to the container. You can add new environment variables, which are added to the container at launch, or you can override the existing environment variables from the Docker image or the task definition. You must also specify a container name.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
cpu (integer) --
The number of cpu units reserved for the container, instead of the default value from the task definition. You must also specify a container name.
memory (integer) --
The hard limit (in MiB) of memory to present to the container, instead of the default value from the task definition. If your container attempts to exceed the memory specified here, the container is killed. You must also specify a container name.
memoryReservation (integer) --
The soft limit (in MiB) of memory to reserve for the container, instead of the default value from the task definition. You must also specify a container name.
taskRoleArn (string) --
The Amazon Resource Name (ARN) of the IAM role that containers in this task can assume. All containers in this task are granted the permissions that are specified in this role.
executionRoleArn (string) --
The Amazon Resource Name (ARN) of the task execution role that the Amazon ECS container agent and the Docker daemon can assume.
integer
The number of instantiations of the specified task to place on your cluster. You can specify up to 10 tasks per call.
string
An optional tag specified when a task is started. For example if you automatically trigger a task to run a batch process job, you could apply a unique identifier for that job to your task with the startedBy parameter. You can then identify which tasks belong to that job by filtering the results of a ListTasks call with the startedBy value. Up to 36 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed.
If a task is started by an Amazon ECS service, then the startedBy parameter contains the deployment ID of the service that starts it.
string
The name of the task group to associate with the task. The default value is the family name of the task definition (for example, family:my-family-name).
list
An array of placement constraint objects to use for the task. You can specify up to 10 constraints per task (including constraints in the task definition and those specified at run time).
(dict) --
An object representing a constraint on task placement. For more information, see Task Placement Constraints in the Amazon Elastic Container Service Developer Guide .
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. The value distinctInstance is not supported in task definitions.
expression (string) --
A cluster query language expression to apply to the constraint. Note you cannot specify an expression if the constraint type is distinctInstance . For more information, see Cluster Query Language in the Amazon Elastic Container Service Developer Guide .
list
The placement strategy objects to use for the task. You can specify a maximum of five strategy rules per task.
(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 is 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 is 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.
string
The launch type on which to run your task.
string
The platform version on which to run your task. If one is not specified, the latest version is used by default.
dict
The network configuration for the task. This parameter is required for task definitions that use the awsvpc network mode to receive their own Elastic Network Interface, and it is not 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 associated with a task.
subnets (list) -- [REQUIRED]
The subnets associated with the task or service.
(string) --
securityGroups (list) --
The security groups associated with the task or service. If you do not specify a security group, the default security group for the VPC is used.
(string) --
assignPublicIp (string) --
Specifies whether or not the task's elastic network interface receives a public IP address.
dict
Response Syntax
{
'tasks': [
{
'taskArn': 'string',
'clusterArn': 'string',
'taskDefinitionArn': 'string',
'containerInstanceArn': 'string',
'overrides': {
'containerOverrides': [
{
'name': 'string',
'command': [
'string',
],
'environment': [
{
'name': 'string',
'value': 'string'
},
],
'cpu': 123,
'memory': 123,
'memoryReservation': 123
},
],
'taskRoleArn': 'string',
'executionRoleArn': 'string'
},
'lastStatus': 'string',
'desiredStatus': 'string',
'cpu': 'string',
'memory': 'string',
'containers': [
{
'containerArn': 'string',
'taskArn': 'string',
'name': 'string',
'lastStatus': 'string',
'exitCode': 123,
'reason': 'string',
'networkBindings': [
{
'bindIP': 'string',
'containerPort': 123,
'hostPort': 123,
'protocol': 'tcp'|'udp'
},
],
'networkInterfaces': [
{
'attachmentId': 'string',
'privateIpv4Address': 'string',
'ipv6Address': 'string'
},
]
},
],
'startedBy': 'string',
'version': 123,
'stoppedReason': 'string',
'connectivity': 'CONNECTED'|'DISCONNECTED',
'connectivityAt': datetime(2015, 1, 1),
'pullStartedAt': datetime(2015, 1, 1),
'pullStoppedAt': datetime(2015, 1, 1),
'executionStoppedAt': datetime(2015, 1, 1),
'createdAt': datetime(2015, 1, 1),
'startedAt': datetime(2015, 1, 1),
'stoppingAt': datetime(2015, 1, 1),
'stoppedAt': datetime(2015, 1, 1),
'group': 'string',
'launchType': 'EC2'|'FARGATE',
'platformVersion': 'string',
'attachments': [
{
'id': 'string',
'type': 'string',
'status': 'string',
'details': [
{
'name': 'string',
'value': 'string'
},
]
},
]
},
],
'failures': [
{
'arn': 'string',
'reason': 'string'
},
]
}
Response Structure
(dict) --
tasks (list) --
A full description of the tasks that were run. The tasks that were successfully placed on your cluster are described here.
(dict) --
Details on a task in a cluster.
taskArn (string) --
The Amazon Resource Name (ARN) of the task.
clusterArn (string) --
The ARN of the cluster that hosts the task.
taskDefinitionArn (string) --
The ARN of the task definition that creates the task.
containerInstanceArn (string) --
The ARN of the container instances that host the task.
overrides (dict) --
One or more container overrides.
containerOverrides (list) --
One or more container overrides sent to a task.
(dict) --
The overrides that should be sent to a container.
name (string) --
The name of the container that receives the override. This parameter is required if any override is specified.
command (list) --
The command to send to the container that overrides the default command from the Docker image or the task definition. You must also specify a container name.
(string) --
environment (list) --
The environment variables to send to the container. You can add new environment variables, which are added to the container at launch, or you can override the existing environment variables from the Docker image or the task definition. You must also specify a container name.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
cpu (integer) --
The number of cpu units reserved for the container, instead of the default value from the task definition. You must also specify a container name.
memory (integer) --
The hard limit (in MiB) of memory to present to the container, instead of the default value from the task definition. If your container attempts to exceed the memory specified here, the container is killed. You must also specify a container name.
memoryReservation (integer) --
The soft limit (in MiB) of memory to reserve for the container, instead of the default value from the task definition. You must also specify a container name.
taskRoleArn (string) --
The Amazon Resource Name (ARN) of the IAM role that containers in this task can assume. All containers in this task are granted the permissions that are specified in this role.
executionRoleArn (string) --
The Amazon Resource Name (ARN) of the task execution role that the Amazon ECS container agent and the Docker daemon can assume.
lastStatus (string) --
The last known status of the task.
desiredStatus (string) --
The desired status of the task.
cpu (string) --
The number of cpu units used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the memory parameter:
256 (.25 vCPU) - Available memory values: 512MB, 1GB, 2GB
512 (.5 vCPU) - Available memory values: 1GB, 2GB, 3GB, 4GB
1024 (1 vCPU) - Available memory values: 2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB
2048 (2 vCPU) - Available memory values: Between 4GB and 16GB in 1GB increments
4096 (4 vCPU) - Available memory values: Between 8GB and 30GB in 1GB increments
memory (string) --
The amount (in MiB) of memory used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the cpu parameter:
512MB, 1GB, 2GB - Available cpu values: 256 (.25 vCPU)
1GB, 2GB, 3GB, 4GB - Available cpu values: 512 (.5 vCPU)
2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB - Available cpu values: 1024 (1 vCPU)
Between 4GB and 16GB in 1GB increments - Available cpu values: 2048 (2 vCPU)
Between 8GB and 30GB in 1GB increments - Available cpu values: 4096 (4 vCPU)
containers (list) --
The containers associated with the task.
(dict) --
A Docker container that is part of a task.
containerArn (string) --
The Amazon Resource Name (ARN) of the container.
taskArn (string) --
The ARN of the task.
name (string) --
The name of the container.
lastStatus (string) --
The last known status of the container.
exitCode (integer) --
The exit code returned from the container.
reason (string) --
A short (255 max characters) human-readable string to provide additional details about a running or stopped container.
networkBindings (list) --
The network bindings associated with the container.
(dict) --
Details on the network bindings between a container and its host container instance. After a task reaches the RUNNING status, manual and automatic host and container port assignments are visible in the networkBindings section of DescribeTasks API responses.
bindIP (string) --
The IP address that the container is bound to on the container instance.
containerPort (integer) --
The port number on the container that is used with the network binding.
hostPort (integer) --
The port number on the host that is used with the network binding.
protocol (string) --
The protocol used for the network binding.
networkInterfaces (list) --
The network interfaces associated with the container.
(dict) --
An object representing the Elastic Network Interface for tasks that use the awsvpc network mode.
attachmentId (string) --
The attachment ID for the network interface.
privateIpv4Address (string) --
The private IPv4 address for the network interface.
ipv6Address (string) --
The private IPv6 address for the network interface.
startedBy (string) --
The tag specified when a task is started. If the task is started by an Amazon ECS service, then the startedBy parameter contains the deployment ID of the service that starts it.
version (integer) --
The version counter for the task. Every time a task experiences a change that triggers a CloudWatch event, the version counter is incremented. If you are replicating your Amazon ECS task state with CloudWatch Events, you can compare the version of a task reported by the Amazon ECS APIs with the version reported in CloudWatch Events for the task (inside the detail object) to verify that the version in your event stream is current.
stoppedReason (string) --
The reason the task was stopped.
connectivity (string) --
The connectivity status of a task.
connectivityAt (datetime) --
The Unix time stamp for when the task last went into CONNECTED status.
pullStartedAt (datetime) --
The Unix time stamp for when the container image pull began.
pullStoppedAt (datetime) --
The Unix time stamp for when the container image pull completed.
executionStoppedAt (datetime) --
The Unix timestamp for when the task execution stopped.
createdAt (datetime) --
The Unix time stamp for when the task was created (the task entered the PENDING state).
startedAt (datetime) --
The Unix time stamp for when the task started (the task transitioned from the PENDING state to the RUNNING state).
stoppingAt (datetime) --
The Unix time stamp for when the task will stop (the task transitioned from the RUNNING state to the STOPPED state).
stoppedAt (datetime) --
The Unix time stamp for when the task was stopped (the task transitioned from the RUNNING state to the STOPPED state).
group (string) --
The name of the task group associated with the task.
launchType (string) --
The launch type on which your task is running.
platformVersion (string) --
The platform version on which your task is running. For more information, see AWS Fargate Platform Versions in the Amazon Elastic Container Service Developer Guide .
attachments (list) --
The Elastic Network Adapter associated with the task if the task uses the awsvpc network mode.
(dict) --
An object representing a container instance or task attachment.
id (string) --
The unique identifier for the attachment.
type (string) --
The type of the attachment, such as an ElasticNetworkInterface .
status (string) --
The status of the attachment. Valid values are PRECREATED , CREATED , ATTACHING , ATTACHED , DETACHING , DETACHED , and DELETED .
details (list) --
Details of the attachment. For Elastic Network Interfaces, this includes the network interface ID, the MAC address, the subnet ID, and the private IPv4 address.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
failures (list) --
Any failures associated with the call.
(dict) --
A failed resource.
arn (string) --
The Amazon Resource Name (ARN) of the failed resource.
reason (string) --
The reason for the failure.
{'networkConfiguration': {'awsvpcConfiguration': {'assignPublicIp': 'ENABLED | '
'DISABLED'}},
'overrides': {'executionRoleArn': 'string'}}
Response {'tasks': {'connectivity': 'CONNECTED | DISCONNECTED',
'connectivityAt': 'timestamp',
'cpu': 'string',
'executionStoppedAt': 'timestamp',
'launchType': 'EC2 | FARGATE',
'memory': 'string',
'overrides': {'executionRoleArn': 'string'},
'platformVersion': 'string',
'pullStartedAt': 'timestamp',
'pullStoppedAt': 'timestamp',
'stoppingAt': 'timestamp'}}
Starts a new task from the specified task definition on the specified container instance or instances.
Alternatively, you can use RunTask to place tasks for you. For more information, see Scheduling Tasks in the Amazon Elastic Container Service Developer Guide .
See also: AWS API Documentation
Request Syntax
client.start_task(
cluster='string',
taskDefinition='string',
overrides={
'containerOverrides': [
{
'name': 'string',
'command': [
'string',
],
'environment': [
{
'name': 'string',
'value': 'string'
},
],
'cpu': 123,
'memory': 123,
'memoryReservation': 123
},
],
'taskRoleArn': 'string',
'executionRoleArn': 'string'
},
containerInstances=[
'string',
],
startedBy='string',
group='string',
networkConfiguration={
'awsvpcConfiguration': {
'subnets': [
'string',
],
'securityGroups': [
'string',
],
'assignPublicIp': 'ENABLED'|'DISABLED'
}
}
)
string
The short name or full Amazon Resource Name (ARN) of the cluster on which to start your task. If you do not specify a cluster, the default cluster is assumed.
string
[REQUIRED]
The family and revision (family:revision ) or full ARN of the task definition to start. If a revision is not specified, the latest ACTIVE revision is used.
dict
A list of container overrides in JSON format that specify the name of a container in the specified task definition and the overrides it should receive. You can override the default command for a container (that is specified in the task definition or Docker image) with a command override. You can also override existing environment variables (that are specified in the task definition or Docker image) on a container or add new environment variables to it with an environment override.
Note
A total of 8192 characters are allowed for overrides. This limit includes the JSON formatting characters of the override structure.
containerOverrides (list) --
One or more container overrides sent to a task.
(dict) --
The overrides that should be sent to a container.
name (string) --
The name of the container that receives the override. This parameter is required if any override is specified.
command (list) --
The command to send to the container that overrides the default command from the Docker image or the task definition. You must also specify a container name.
(string) --
environment (list) --
The environment variables to send to the container. You can add new environment variables, which are added to the container at launch, or you can override the existing environment variables from the Docker image or the task definition. You must also specify a container name.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
cpu (integer) --
The number of cpu units reserved for the container, instead of the default value from the task definition. You must also specify a container name.
memory (integer) --
The hard limit (in MiB) of memory to present to the container, instead of the default value from the task definition. If your container attempts to exceed the memory specified here, the container is killed. You must also specify a container name.
memoryReservation (integer) --
The soft limit (in MiB) of memory to reserve for the container, instead of the default value from the task definition. You must also specify a container name.
taskRoleArn (string) --
The Amazon Resource Name (ARN) of the IAM role that containers in this task can assume. All containers in this task are granted the permissions that are specified in this role.
executionRoleArn (string) --
The Amazon Resource Name (ARN) of the task execution role that the Amazon ECS container agent and the Docker daemon can assume.
list
[REQUIRED]
The container instance IDs or full ARN entries for the container instances on which you would like to place your task. You can specify up to 10 container instances.
(string) --
string
An optional tag specified when a task is started. For example if you automatically trigger a task to run a batch process job, you could apply a unique identifier for that job to your task with the startedBy parameter. You can then identify which tasks belong to that job by filtering the results of a ListTasks call with the startedBy value. Up to 36 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed.
If a task is started by an Amazon ECS service, then the startedBy parameter contains the deployment ID of the service that starts it.
string
The name of the task group to associate with the task. The default value is the family name of the task definition (for example, family:my-family-name).
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 associated with a task.
subnets (list) -- [REQUIRED]
The subnets associated with the task or service.
(string) --
securityGroups (list) --
The security groups associated with the task or service. If you do not specify a security group, the default security group for the VPC is used.
(string) --
assignPublicIp (string) --
Specifies whether or not the task's elastic network interface receives a public IP address.
dict
Response Syntax
{
'tasks': [
{
'taskArn': 'string',
'clusterArn': 'string',
'taskDefinitionArn': 'string',
'containerInstanceArn': 'string',
'overrides': {
'containerOverrides': [
{
'name': 'string',
'command': [
'string',
],
'environment': [
{
'name': 'string',
'value': 'string'
},
],
'cpu': 123,
'memory': 123,
'memoryReservation': 123
},
],
'taskRoleArn': 'string',
'executionRoleArn': 'string'
},
'lastStatus': 'string',
'desiredStatus': 'string',
'cpu': 'string',
'memory': 'string',
'containers': [
{
'containerArn': 'string',
'taskArn': 'string',
'name': 'string',
'lastStatus': 'string',
'exitCode': 123,
'reason': 'string',
'networkBindings': [
{
'bindIP': 'string',
'containerPort': 123,
'hostPort': 123,
'protocol': 'tcp'|'udp'
},
],
'networkInterfaces': [
{
'attachmentId': 'string',
'privateIpv4Address': 'string',
'ipv6Address': 'string'
},
]
},
],
'startedBy': 'string',
'version': 123,
'stoppedReason': 'string',
'connectivity': 'CONNECTED'|'DISCONNECTED',
'connectivityAt': datetime(2015, 1, 1),
'pullStartedAt': datetime(2015, 1, 1),
'pullStoppedAt': datetime(2015, 1, 1),
'executionStoppedAt': datetime(2015, 1, 1),
'createdAt': datetime(2015, 1, 1),
'startedAt': datetime(2015, 1, 1),
'stoppingAt': datetime(2015, 1, 1),
'stoppedAt': datetime(2015, 1, 1),
'group': 'string',
'launchType': 'EC2'|'FARGATE',
'platformVersion': 'string',
'attachments': [
{
'id': 'string',
'type': 'string',
'status': 'string',
'details': [
{
'name': 'string',
'value': 'string'
},
]
},
]
},
],
'failures': [
{
'arn': 'string',
'reason': 'string'
},
]
}
Response Structure
(dict) --
tasks (list) --
A full description of the tasks that were started. Each task that was successfully placed on your container instances is described.
(dict) --
Details on a task in a cluster.
taskArn (string) --
The Amazon Resource Name (ARN) of the task.
clusterArn (string) --
The ARN of the cluster that hosts the task.
taskDefinitionArn (string) --
The ARN of the task definition that creates the task.
containerInstanceArn (string) --
The ARN of the container instances that host the task.
overrides (dict) --
One or more container overrides.
containerOverrides (list) --
One or more container overrides sent to a task.
(dict) --
The overrides that should be sent to a container.
name (string) --
The name of the container that receives the override. This parameter is required if any override is specified.
command (list) --
The command to send to the container that overrides the default command from the Docker image or the task definition. You must also specify a container name.
(string) --
environment (list) --
The environment variables to send to the container. You can add new environment variables, which are added to the container at launch, or you can override the existing environment variables from the Docker image or the task definition. You must also specify a container name.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
cpu (integer) --
The number of cpu units reserved for the container, instead of the default value from the task definition. You must also specify a container name.
memory (integer) --
The hard limit (in MiB) of memory to present to the container, instead of the default value from the task definition. If your container attempts to exceed the memory specified here, the container is killed. You must also specify a container name.
memoryReservation (integer) --
The soft limit (in MiB) of memory to reserve for the container, instead of the default value from the task definition. You must also specify a container name.
taskRoleArn (string) --
The Amazon Resource Name (ARN) of the IAM role that containers in this task can assume. All containers in this task are granted the permissions that are specified in this role.
executionRoleArn (string) --
The Amazon Resource Name (ARN) of the task execution role that the Amazon ECS container agent and the Docker daemon can assume.
lastStatus (string) --
The last known status of the task.
desiredStatus (string) --
The desired status of the task.
cpu (string) --
The number of cpu units used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the memory parameter:
256 (.25 vCPU) - Available memory values: 512MB, 1GB, 2GB
512 (.5 vCPU) - Available memory values: 1GB, 2GB, 3GB, 4GB
1024 (1 vCPU) - Available memory values: 2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB
2048 (2 vCPU) - Available memory values: Between 4GB and 16GB in 1GB increments
4096 (4 vCPU) - Available memory values: Between 8GB and 30GB in 1GB increments
memory (string) --
The amount (in MiB) of memory used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the cpu parameter:
512MB, 1GB, 2GB - Available cpu values: 256 (.25 vCPU)
1GB, 2GB, 3GB, 4GB - Available cpu values: 512 (.5 vCPU)
2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB - Available cpu values: 1024 (1 vCPU)
Between 4GB and 16GB in 1GB increments - Available cpu values: 2048 (2 vCPU)
Between 8GB and 30GB in 1GB increments - Available cpu values: 4096 (4 vCPU)
containers (list) --
The containers associated with the task.
(dict) --
A Docker container that is part of a task.
containerArn (string) --
The Amazon Resource Name (ARN) of the container.
taskArn (string) --
The ARN of the task.
name (string) --
The name of the container.
lastStatus (string) --
The last known status of the container.
exitCode (integer) --
The exit code returned from the container.
reason (string) --
A short (255 max characters) human-readable string to provide additional details about a running or stopped container.
networkBindings (list) --
The network bindings associated with the container.
(dict) --
Details on the network bindings between a container and its host container instance. After a task reaches the RUNNING status, manual and automatic host and container port assignments are visible in the networkBindings section of DescribeTasks API responses.
bindIP (string) --
The IP address that the container is bound to on the container instance.
containerPort (integer) --
The port number on the container that is used with the network binding.
hostPort (integer) --
The port number on the host that is used with the network binding.
protocol (string) --
The protocol used for the network binding.
networkInterfaces (list) --
The network interfaces associated with the container.
(dict) --
An object representing the Elastic Network Interface for tasks that use the awsvpc network mode.
attachmentId (string) --
The attachment ID for the network interface.
privateIpv4Address (string) --
The private IPv4 address for the network interface.
ipv6Address (string) --
The private IPv6 address for the network interface.
startedBy (string) --
The tag specified when a task is started. If the task is started by an Amazon ECS service, then the startedBy parameter contains the deployment ID of the service that starts it.
version (integer) --
The version counter for the task. Every time a task experiences a change that triggers a CloudWatch event, the version counter is incremented. If you are replicating your Amazon ECS task state with CloudWatch Events, you can compare the version of a task reported by the Amazon ECS APIs with the version reported in CloudWatch Events for the task (inside the detail object) to verify that the version in your event stream is current.
stoppedReason (string) --
The reason the task was stopped.
connectivity (string) --
The connectivity status of a task.
connectivityAt (datetime) --
The Unix time stamp for when the task last went into CONNECTED status.
pullStartedAt (datetime) --
The Unix time stamp for when the container image pull began.
pullStoppedAt (datetime) --
The Unix time stamp for when the container image pull completed.
executionStoppedAt (datetime) --
The Unix timestamp for when the task execution stopped.
createdAt (datetime) --
The Unix time stamp for when the task was created (the task entered the PENDING state).
startedAt (datetime) --
The Unix time stamp for when the task started (the task transitioned from the PENDING state to the RUNNING state).
stoppingAt (datetime) --
The Unix time stamp for when the task will stop (the task transitioned from the RUNNING state to the STOPPED state).
stoppedAt (datetime) --
The Unix time stamp for when the task was stopped (the task transitioned from the RUNNING state to the STOPPED state).
group (string) --
The name of the task group associated with the task.
launchType (string) --
The launch type on which your task is running.
platformVersion (string) --
The platform version on which your task is running. For more information, see AWS Fargate Platform Versions in the Amazon Elastic Container Service Developer Guide .
attachments (list) --
The Elastic Network Adapter associated with the task if the task uses the awsvpc network mode.
(dict) --
An object representing a container instance or task attachment.
id (string) --
The unique identifier for the attachment.
type (string) --
The type of the attachment, such as an ElasticNetworkInterface .
status (string) --
The status of the attachment. Valid values are PRECREATED , CREATED , ATTACHING , ATTACHED , DETACHING , DETACHED , and DELETED .
details (list) --
Details of the attachment. For Elastic Network Interfaces, this includes the network interface ID, the MAC address, the subnet ID, and the private IPv4 address.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
failures (list) --
Any failures associated with the call.
(dict) --
A failed resource.
arn (string) --
The Amazon Resource Name (ARN) of the failed resource.
reason (string) --
The reason for the failure.
{'task': {'connectivity': 'CONNECTED | DISCONNECTED',
'connectivityAt': 'timestamp',
'cpu': 'string',
'executionStoppedAt': 'timestamp',
'launchType': 'EC2 | FARGATE',
'memory': 'string',
'overrides': {'executionRoleArn': 'string'},
'platformVersion': 'string',
'pullStartedAt': 'timestamp',
'pullStoppedAt': 'timestamp',
'stoppingAt': 'timestamp'}}
Stops a running task.
When StopTask is called on a task, the equivalent of docker stop is issued to the containers running in the task. This results in a SIGTERM and a default 30-second timeout, after which SIGKILL is sent and the containers are forcibly stopped. If the container handles the SIGTERM gracefully and exits within 30 seconds from receiving it, no SIGKILL is sent.
Note
The default 30-second timeout can be configured on the Amazon ECS container agent with the ECS_CONTAINER_STOP_TIMEOUT variable. For more information, see Amazon ECS Container Agent Configuration in the Amazon Elastic Container Service Developer Guide .
See also: AWS API Documentation
Request Syntax
client.stop_task(
cluster='string',
task='string',
reason='string'
)
string
The short name or full Amazon Resource Name (ARN) of the cluster that hosts the task to stop. If you do not specify a cluster, the default cluster is assumed.
string
[REQUIRED]
The task ID or full ARN entry of the task to stop.
string
An optional message specified when a task is stopped. For example, if you are using a custom scheduler, you can use this parameter to specify the reason for stopping the task here, and the message appears in subsequent DescribeTasks API operations on this task. Up to 255 characters are allowed in this message.
dict
Response Syntax
{
'task': {
'taskArn': 'string',
'clusterArn': 'string',
'taskDefinitionArn': 'string',
'containerInstanceArn': 'string',
'overrides': {
'containerOverrides': [
{
'name': 'string',
'command': [
'string',
],
'environment': [
{
'name': 'string',
'value': 'string'
},
],
'cpu': 123,
'memory': 123,
'memoryReservation': 123
},
],
'taskRoleArn': 'string',
'executionRoleArn': 'string'
},
'lastStatus': 'string',
'desiredStatus': 'string',
'cpu': 'string',
'memory': 'string',
'containers': [
{
'containerArn': 'string',
'taskArn': 'string',
'name': 'string',
'lastStatus': 'string',
'exitCode': 123,
'reason': 'string',
'networkBindings': [
{
'bindIP': 'string',
'containerPort': 123,
'hostPort': 123,
'protocol': 'tcp'|'udp'
},
],
'networkInterfaces': [
{
'attachmentId': 'string',
'privateIpv4Address': 'string',
'ipv6Address': 'string'
},
]
},
],
'startedBy': 'string',
'version': 123,
'stoppedReason': 'string',
'connectivity': 'CONNECTED'|'DISCONNECTED',
'connectivityAt': datetime(2015, 1, 1),
'pullStartedAt': datetime(2015, 1, 1),
'pullStoppedAt': datetime(2015, 1, 1),
'executionStoppedAt': datetime(2015, 1, 1),
'createdAt': datetime(2015, 1, 1),
'startedAt': datetime(2015, 1, 1),
'stoppingAt': datetime(2015, 1, 1),
'stoppedAt': datetime(2015, 1, 1),
'group': 'string',
'launchType': 'EC2'|'FARGATE',
'platformVersion': 'string',
'attachments': [
{
'id': 'string',
'type': 'string',
'status': 'string',
'details': [
{
'name': 'string',
'value': 'string'
},
]
},
]
}
}
Response Structure
(dict) --
task (dict) --
The task that was stopped.
taskArn (string) --
The Amazon Resource Name (ARN) of the task.
clusterArn (string) --
The ARN of the cluster that hosts the task.
taskDefinitionArn (string) --
The ARN of the task definition that creates the task.
containerInstanceArn (string) --
The ARN of the container instances that host the task.
overrides (dict) --
One or more container overrides.
containerOverrides (list) --
One or more container overrides sent to a task.
(dict) --
The overrides that should be sent to a container.
name (string) --
The name of the container that receives the override. This parameter is required if any override is specified.
command (list) --
The command to send to the container that overrides the default command from the Docker image or the task definition. You must also specify a container name.
(string) --
environment (list) --
The environment variables to send to the container. You can add new environment variables, which are added to the container at launch, or you can override the existing environment variables from the Docker image or the task definition. You must also specify a container name.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
cpu (integer) --
The number of cpu units reserved for the container, instead of the default value from the task definition. You must also specify a container name.
memory (integer) --
The hard limit (in MiB) of memory to present to the container, instead of the default value from the task definition. If your container attempts to exceed the memory specified here, the container is killed. You must also specify a container name.
memoryReservation (integer) --
The soft limit (in MiB) of memory to reserve for the container, instead of the default value from the task definition. You must also specify a container name.
taskRoleArn (string) --
The Amazon Resource Name (ARN) of the IAM role that containers in this task can assume. All containers in this task are granted the permissions that are specified in this role.
executionRoleArn (string) --
The Amazon Resource Name (ARN) of the task execution role that the Amazon ECS container agent and the Docker daemon can assume.
lastStatus (string) --
The last known status of the task.
desiredStatus (string) --
The desired status of the task.
cpu (string) --
The number of cpu units used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the memory parameter:
256 (.25 vCPU) - Available memory values: 512MB, 1GB, 2GB
512 (.5 vCPU) - Available memory values: 1GB, 2GB, 3GB, 4GB
1024 (1 vCPU) - Available memory values: 2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB
2048 (2 vCPU) - Available memory values: Between 4GB and 16GB in 1GB increments
4096 (4 vCPU) - Available memory values: Between 8GB and 30GB in 1GB increments
memory (string) --
The amount (in MiB) of memory used by the task. If using the EC2 launch type, this field is optional and any value can be used. If using the Fargate launch type, this field is required and you must use one of the following values, which determines your range of valid values for the cpu parameter:
512MB, 1GB, 2GB - Available cpu values: 256 (.25 vCPU)
1GB, 2GB, 3GB, 4GB - Available cpu values: 512 (.5 vCPU)
2GB, 3GB, 4GB, 5GB, 6GB, 7GB, 8GB - Available cpu values: 1024 (1 vCPU)
Between 4GB and 16GB in 1GB increments - Available cpu values: 2048 (2 vCPU)
Between 8GB and 30GB in 1GB increments - Available cpu values: 4096 (4 vCPU)
containers (list) --
The containers associated with the task.
(dict) --
A Docker container that is part of a task.
containerArn (string) --
The Amazon Resource Name (ARN) of the container.
taskArn (string) --
The ARN of the task.
name (string) --
The name of the container.
lastStatus (string) --
The last known status of the container.
exitCode (integer) --
The exit code returned from the container.
reason (string) --
A short (255 max characters) human-readable string to provide additional details about a running or stopped container.
networkBindings (list) --
The network bindings associated with the container.
(dict) --
Details on the network bindings between a container and its host container instance. After a task reaches the RUNNING status, manual and automatic host and container port assignments are visible in the networkBindings section of DescribeTasks API responses.
bindIP (string) --
The IP address that the container is bound to on the container instance.
containerPort (integer) --
The port number on the container that is used with the network binding.
hostPort (integer) --
The port number on the host that is used with the network binding.
protocol (string) --
The protocol used for the network binding.
networkInterfaces (list) --
The network interfaces associated with the container.
(dict) --
An object representing the Elastic Network Interface for tasks that use the awsvpc network mode.
attachmentId (string) --
The attachment ID for the network interface.
privateIpv4Address (string) --
The private IPv4 address for the network interface.
ipv6Address (string) --
The private IPv6 address for the network interface.
startedBy (string) --
The tag specified when a task is started. If the task is started by an Amazon ECS service, then the startedBy parameter contains the deployment ID of the service that starts it.
version (integer) --
The version counter for the task. Every time a task experiences a change that triggers a CloudWatch event, the version counter is incremented. If you are replicating your Amazon ECS task state with CloudWatch Events, you can compare the version of a task reported by the Amazon ECS APIs with the version reported in CloudWatch Events for the task (inside the detail object) to verify that the version in your event stream is current.
stoppedReason (string) --
The reason the task was stopped.
connectivity (string) --
The connectivity status of a task.
connectivityAt (datetime) --
The Unix time stamp for when the task last went into CONNECTED status.
pullStartedAt (datetime) --
The Unix time stamp for when the container image pull began.
pullStoppedAt (datetime) --
The Unix time stamp for when the container image pull completed.
executionStoppedAt (datetime) --
The Unix timestamp for when the task execution stopped.
createdAt (datetime) --
The Unix time stamp for when the task was created (the task entered the PENDING state).
startedAt (datetime) --
The Unix time stamp for when the task started (the task transitioned from the PENDING state to the RUNNING state).
stoppingAt (datetime) --
The Unix time stamp for when the task will stop (the task transitioned from the RUNNING state to the STOPPED state).
stoppedAt (datetime) --
The Unix time stamp for when the task was stopped (the task transitioned from the RUNNING state to the STOPPED state).
group (string) --
The name of the task group associated with the task.
launchType (string) --
The launch type on which your task is running.
platformVersion (string) --
The platform version on which your task is running. For more information, see AWS Fargate Platform Versions in the Amazon Elastic Container Service Developer Guide .
attachments (list) --
The Elastic Network Adapter associated with the task if the task uses the awsvpc network mode.
(dict) --
An object representing a container instance or task attachment.
id (string) --
The unique identifier for the attachment.
type (string) --
The type of the attachment, such as an ElasticNetworkInterface .
status (string) --
The status of the attachment. Valid values are PRECREATED , CREATED , ATTACHING , ATTACHED , DETACHING , DETACHED , and DELETED .
details (list) --
Details of the attachment. For Elastic Network Interfaces, this includes the network interface ID, the MAC address, the subnet ID, and the private IPv4 address.
(dict) --
A key and value pair object.
name (string) --
The name of the key value pair. For environment variables, this is the name of the environment variable.
value (string) --
The value of the key value pair. For environment variables, this is the value of the environment variable.
{'executionStoppedAt': 'timestamp',
'pullStartedAt': 'timestamp',
'pullStoppedAt': 'timestamp'}
Note
This action is only used by the Amazon ECS agent, and it is not intended for use outside of the agent.
Sent to acknowledge that a task changed states.
See also: AWS API Documentation
Request Syntax
client.submit_task_state_change(
cluster='string',
task='string',
status='string',
reason='string',
containers=[
{
'containerName': 'string',
'exitCode': 123,
'networkBindings': [
{
'bindIP': 'string',
'containerPort': 123,
'hostPort': 123,
'protocol': 'tcp'|'udp'
},
],
'reason': 'string',
'status': 'string'
},
],
attachments=[
{
'attachmentArn': 'string',
'status': 'string'
},
],
pullStartedAt=datetime(2015, 1, 1),
pullStoppedAt=datetime(2015, 1, 1),
executionStoppedAt=datetime(2015, 1, 1)
)
string
The short name or full Amazon Resource Name (ARN) of the cluster that hosts the task.
string
The task ID or full ARN of the task in the state change request.
string
The status of the state change request.
string
The reason for the state change request.
list
Any containers associated with the state change request.
(dict) --
An object representing a change in state for a container.
containerName (string) --
The name of the container.
exitCode (integer) --
The exit code for the container, if the state change is a result of the container exiting.
networkBindings (list) --
Any network bindings associated with the container.
(dict) --
Details on the network bindings between a container and its host container instance. After a task reaches the RUNNING status, manual and automatic host and container port assignments are visible in the networkBindings section of DescribeTasks API responses.
bindIP (string) --
The IP address that the container is bound to on the container instance.
containerPort (integer) --
The port number on the container that is used with the network binding.
hostPort (integer) --
The port number on the host that is used with the network binding.
protocol (string) --
The protocol used for the network binding.
reason (string) --
The reason for the state change.
status (string) --
The status of the container.
list
Any attachments associated with the state change request.
(dict) --
An object representing a change in state for a task attachment.
attachmentArn (string) -- [REQUIRED]
The Amazon Resource Name (ARN) of the attachment.
status (string) -- [REQUIRED]
The status of the attachment.
datetime
The Unix time stamp for when the container image pull began.
datetime
The Unix time stamp for when the container image pull completed.
datetime
The Unix timestamp for when the task execution stopped.
dict
Response Syntax
{
'acknowledgment': 'string'
}
Response Structure
(dict) --
acknowledgment (string) --
Acknowledgement of the state change.
{'forceNewDeployment': 'boolean',
'networkConfiguration': {'awsvpcConfiguration': {'assignPublicIp': 'ENABLED | '
'DISABLED'}},
'platformVersion': 'string'}
Response {'service': {'deployments': {'launchType': 'EC2 | FARGATE',
'networkConfiguration': {'awsvpcConfiguration': {'assignPublicIp': 'ENABLED '
'| '
'DISABLED'}},
'platformVersion': 'string'},
'launchType': 'EC2 | FARGATE',
'networkConfiguration': {'awsvpcConfiguration': {'assignPublicIp': 'ENABLED '
'| '
'DISABLED'}},
'platformVersion': 'string'}}
Modifies the desired count, deployment configuration, network configuration, or task definition used in a service.
You can add to or subtract from the number of instantiations of a task definition in a service by specifying the cluster that the service is running in and a new desiredCount parameter.
You can use UpdateService to modify your task definition and deploy a new version of your service.
You can also update the deployment configuration of a service. When a deployment is triggered by updating the task definition of a service, the service scheduler uses the deployment configuration parameters, minimumHealthyPercent and maximumPercent , to determine the deployment strategy.
If minimumHealthyPercent is below 100%, the scheduler can ignore desiredCount temporarily during a deployment. For example, if desiredCount is four tasks, a minimum of 50% allows the scheduler to stop two existing tasks before starting two new tasks. Tasks for services that do not use a load balancer are considered healthy if they are in the RUNNING state. Tasks for services that use a load balancer are considered healthy if they are in the RUNNING state and the container instance they are hosted on is reported as healthy by the load balancer.
The maximumPercent parameter represents an upper limit on the number of running tasks during a deployment, which enables you to define the deployment batch size. For example, if desiredCount is four tasks, a maximum of 200% starts four new tasks before stopping the four older tasks (provided that the cluster resources required to do this are available).
When UpdateService stops a task during a deployment, the equivalent of docker stop is issued to the containers running in the task. This results in a SIGTERM and a 30-second timeout, after which SIGKILL is sent and the containers are forcibly stopped. If the container handles the SIGTERM gracefully and exits within 30 seconds from receiving it, no SIGKILL is sent.
When the service scheduler launches new tasks, it determines task placement in your cluster with the following logic:
Determine which of the container instances in your cluster can support your service's task definition (for example, they have the required CPU, memory, ports, and container instance attributes).
By default, the service scheduler attempts to balance tasks across Availability Zones in this manner (although you can choose a different placement strategy):
Sort the valid container instances by the fewest number of running tasks for this service in the same Availability Zone as the instance. For example, if zone A has one running service task and zones B and C each have zero, valid container instances in either zone B or C are considered optimal for placement.
Place the new service task on a valid container instance in an optimal Availability Zone (based on the previous steps), favoring container instances with the fewest number of running tasks for this service.
When the service scheduler stops running tasks, it attempts to maintain balance across the Availability Zones in your cluster using the following logic:
Sort the container instances by the largest number of running tasks for this service in the same Availability Zone as the instance. For example, if zone A has one running service task and zones B and C each have two, container instances in either zone B or C are considered optimal for termination.
Stop the task on a container instance in an optimal Availability Zone (based on the previous steps), favoring container instances with the largest number of running tasks for this service.
See also: AWS API Documentation
Request Syntax
client.update_service(
cluster='string',
service='string',
desiredCount=123,
taskDefinition='string',
deploymentConfiguration={
'maximumPercent': 123,
'minimumHealthyPercent': 123
},
networkConfiguration={
'awsvpcConfiguration': {
'subnets': [
'string',
],
'securityGroups': [
'string',
],
'assignPublicIp': 'ENABLED'|'DISABLED'
}
},
platformVersion='string',
forceNewDeployment=True|False
)
string
The short name or full Amazon Resource Name (ARN) of the cluster that your service is running on. If you do not specify a cluster, the default cluster is assumed.
string
[REQUIRED]
The name of the service to update.
integer
The number of instantiations of the task to place and keep running in your service.
string
The family and revision (family:revision ) or full ARN of the task definition to run in your service. If a revision is not specified, the latest ACTIVE revision is used. If you modify the task definition with UpdateService , Amazon ECS spawns a task with the new version of the task definition and then stops an old task after the new version is running.
dict
Optional deployment parameters that control how many tasks run during the deployment and the ordering of stopping and starting tasks.
maximumPercent (integer) --
The upper limit (as a percentage of the service's desiredCount ) of the number of tasks that are allowed in the RUNNING or PENDING state in a service during a deployment. The maximum number of tasks during a deployment is the desiredCount multiplied by maximumPercent /100, rounded down to the nearest integer value.
minimumHealthyPercent (integer) --
The lower limit (as a percentage of the service's desiredCount ) of the number of running tasks that must remain in the RUNNING state in a service during a deployment. The minimum number of healthy tasks during a deployment is the desiredCount multiplied by minimumHealthyPercent /100, rounded up to the nearest integer value.
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 is not supported for other network modes. For more information, see Task Networking in the Amazon Elastic Container Service Developer Guide .
Note
Updating a service to add a subnet to a list of existing subnets does not trigger a service deployment. For example, if your network configuration change is to keep the existing subnets and simply add another subnet to the network configuration, this does not trigger a new service deployment.
awsvpcConfiguration (dict) --
The VPC subnets and security groups associated with a task.
subnets (list) -- [REQUIRED]
The subnets associated with the task or service.
(string) --
securityGroups (list) --
The security groups associated with the task or service. If you do not specify a security group, the default security group for the VPC is used.
(string) --
assignPublicIp (string) --
Specifies whether or not the task's elastic network interface receives a public IP address.
string
The platform version you want to update your service to run.
boolean
Whether or not to force a new deployment of the service.
dict
Response Syntax
{
'service': {
'serviceArn': 'string',
'serviceName': 'string',
'clusterArn': 'string',
'loadBalancers': [
{
'targetGroupArn': 'string',
'loadBalancerName': 'string',
'containerName': 'string',
'containerPort': 123
},
],
'status': 'string',
'desiredCount': 123,
'runningCount': 123,
'pendingCount': 123,
'launchType': 'EC2'|'FARGATE',
'platformVersion': 'string',
'taskDefinition': 'string',
'deploymentConfiguration': {
'maximumPercent': 123,
'minimumHealthyPercent': 123
},
'deployments': [
{
'id': 'string',
'status': 'string',
'taskDefinition': 'string',
'desiredCount': 123,
'pendingCount': 123,
'runningCount': 123,
'createdAt': datetime(2015, 1, 1),
'updatedAt': datetime(2015, 1, 1),
'launchType': 'EC2'|'FARGATE',
'platformVersion': 'string',
'networkConfiguration': {
'awsvpcConfiguration': {
'subnets': [
'string',
],
'securityGroups': [
'string',
],
'assignPublicIp': 'ENABLED'|'DISABLED'
}
}
},
],
'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'
}
}
}
}
Response Structure
(dict) --
service (dict) --
The full description of your service following the update call.
serviceArn (string) --
The ARN that identifies the service. The ARN contains the arn:aws:ecs namespace, followed by the region of the service, the AWS account ID of the service owner, the service namespace, and then the service name. For example, ``arn:aws:ecs:region :012345678910 :service/my-service `` .
serviceName (string) --
The name of your service. Up to 255 letters (uppercase and lowercase), numbers, hyphens, and underscores 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.
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, containing the load balancer name, the container name (as it appears in a container definition), and the container port to access from the load balancer.
(dict) --
Details on a load balancer that is used with a service.
targetGroupArn (string) --
The full Amazon Resource Name (ARN) of the Elastic Load Balancing target group associated with a service.
loadBalancerName (string) --
The name of a load balancer.
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 service's task definition. Your container instances must allow ingress traffic on the hostPort of the port mapping.
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 on which your service is running.
platformVersion (string) --
The platform version on which your task is running. For more information, see AWS Fargate Platform Versions in the Amazon Elastic Container Service Developer Guide .
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.
maximumPercent (integer) --
The upper limit (as a percentage of the service's desiredCount ) of the number of tasks that are allowed in the RUNNING or PENDING state in a service during a deployment. The maximum number of tasks during a deployment is the desiredCount multiplied by maximumPercent /100, rounded down to the nearest integer value.
minimumHealthyPercent (integer) --
The lower limit (as a percentage of the service's desiredCount ) of the number of running tasks that must remain in the RUNNING state in a service during a deployment. The minimum number of healthy tasks during a deployment is the desiredCount multiplied by minimumHealthyPercent /100, rounded up to the nearest integer value.
deployments (list) --
The current state of deployments for the service.
(dict) --
The details of an Amazon ECS service deployment.
id (string) --
The ID of the deployment.
status (string) --
The status of the deployment. Valid values are PRIMARY (for the most recent deployment), ACTIVE (for previous deployments that still have tasks running, but are being replaced with the PRIMARY deployment), and INACTIVE (for deployments that have been completely replaced).
taskDefinition (string) --
The most recent task definition that was specified for 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.
createdAt (datetime) --
The Unix time stamp for when the service was created.
updatedAt (datetime) --
The Unix time stamp for when the service was last updated.
launchType (string) --
The launch type on which your service is running.
platformVersion (string) --
The platform version on which your service is running.
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 associated with a task.
subnets (list) --
The subnets associated with the task or service.
(string) --
securityGroups (list) --
The security groups associated with the task or service. If you do not specify a security group, the default security group for the VPC is used.
(string) --
assignPublicIp (string) --
Specifies whether or not the task's elastic network interface receives a public IP address.
roleArn (string) --
The ARN of the IAM role associated with the service that 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) --
Details on an event associated with a service.
id (string) --
The ID string of the event.
createdAt (datetime) --
The Unix time stamp for when the event was triggered.
message (string) --
The event message.
createdAt (datetime) --
The Unix time stamp for 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 .
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. The value distinctInstance is not supported in task definitions.
expression (string) --
A cluster query language expression to apply to the constraint. Note you cannot 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 is 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 is 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 associated with a task.
subnets (list) --
The subnets associated with the task or service.
(string) --
securityGroups (list) --
The security groups associated with the task or service. If you do not specify a security group, the default security group for the VPC is used.
(string) --
assignPublicIp (string) --
Specifies whether or not the task's elastic network interface receives a public IP address.