Amazon EC2 Container Service

{'taskDefinition': {'taskRoleArn': 'string'}}

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).

Request Syntax

client.deregister_task_definition(
    taskDefinition='string'
)

type taskDefinition

string

param taskDefinition

[REQUIRED]

The family and revision (family:revision ) or full Amazon Resource Name (ARN) of the task definition to deregister. You must specify a revision .

rtype

dict

returns

Response Syntax

{
    'taskDefinition': {
        'taskDefinitionArn': 'string',
        'containerDefinitions': [
            {
                'name': 'string',
                'image': 'string',
                'cpu': 123,
                'memory': 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
                    },
                ],
                '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',
                    'options': {
                        'string': 'string'
                    }
                }
            },
        ],
        'family': 'string',
        'taskRoleArn': 'string',
        'revision': 123,
        'volumes': [
            {
                'name': 'string',
                'host': {
                    'sourcePath': 'string'
                }
            },
        ],
        'status': 'ACTIVE'|'INACTIVE',
        'requiresAttributes': [
            {
                'name': 'string',
                'value': '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 EC2 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 `` repository-url /image :tag `` . 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 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. 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 number of MiB of memory to reserve for the container. You must specify a non-zero integer for this parameter; 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. If your container attempts to exceed the memory allocated 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 .

        • 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. 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/userguide/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. This parameter maps to PortBindings in the Create a container section of the Docker Remote API and the --publish option to docker run .

          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 of 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. 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 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. 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 is 49153 to 65535, and this range is used for Docker versions prior to 1.6.0. For Docker version 1.6.0 and later, the Docker daemon tries to read the ephemeral port range from /proc/sys/net/ipv4/ip_local_port_range ; if this kernel parameter is unavailable, the default ephemeral port range is used. You should not attempt to specify a host port in the ephemeral port range, because these are reserved for automatic assignment. In general, ports below 32768 are outside of the ephemeral port range.

              The default reserved ports are 22 for SSH, the Docker ports 2375 and 2376, and the Amazon ECS container agent port 51678. 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 EC2 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/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/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 plain text 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. 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.

            • 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.

            • sourceContainer (string) --

              The name of the container 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 .

        • 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. 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 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 EC2 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 into 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 into 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. 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). Currently unsupported 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 into 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 EC2 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.

            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 provide support for 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 into 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 into 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 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.

    • 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. For more information about volume definition parameters and defaults, see Amazon ECS Task Definitions in the Amazon EC2 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.

          • 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.

    • status (string) --

      The status of the task definition.

    • requiresAttributes (list) --

      The container instance attributes required by your task.

      • (dict) --

        The attributes applicable to a container instance when it is registered.

        • name (string) --

          The name of the container instance attribute.

        • value (string) --

          The value of the container instance attribute (at this time, the value here is Null , but this could change in future revisions for expandability).

{'taskDefinition': {'taskRoleArn': 'string'}}

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.

Request Syntax

client.describe_task_definition(
    taskDefinition='string'
)

type taskDefinition

string

param taskDefinition

[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.

rtype

dict

returns

Response Syntax

{
    'taskDefinition': {
        'taskDefinitionArn': 'string',
        'containerDefinitions': [
            {
                'name': 'string',
                'image': 'string',
                'cpu': 123,
                'memory': 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
                    },
                ],
                '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',
                    'options': {
                        'string': 'string'
                    }
                }
            },
        ],
        'family': 'string',
        'taskRoleArn': 'string',
        'revision': 123,
        'volumes': [
            {
                'name': 'string',
                'host': {
                    'sourcePath': 'string'
                }
            },
        ],
        'status': 'ACTIVE'|'INACTIVE',
        'requiresAttributes': [
            {
                'name': 'string',
                'value': '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 EC2 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 `` repository-url /image :tag `` . 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 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. 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 number of MiB of memory to reserve for the container. You must specify a non-zero integer for this parameter; 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. If your container attempts to exceed the memory allocated 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 .

        • 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. 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/userguide/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. This parameter maps to PortBindings in the Create a container section of the Docker Remote API and the --publish option to docker run .

          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 of 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. 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 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. 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 is 49153 to 65535, and this range is used for Docker versions prior to 1.6.0. For Docker version 1.6.0 and later, the Docker daemon tries to read the ephemeral port range from /proc/sys/net/ipv4/ip_local_port_range ; if this kernel parameter is unavailable, the default ephemeral port range is used. You should not attempt to specify a host port in the ephemeral port range, because these are reserved for automatic assignment. In general, ports below 32768 are outside of the ephemeral port range.

              The default reserved ports are 22 for SSH, the Docker ports 2375 and 2376, and the Amazon ECS container agent port 51678. 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 EC2 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/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/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 plain text 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. 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.

            • 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.

            • sourceContainer (string) --

              The name of the container 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 .

        • 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. 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 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 EC2 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 into 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 into 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. 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). Currently unsupported 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 into 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 EC2 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.

            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 provide support for 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 into 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 into 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 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.

    • 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. For more information about volume definition parameters and defaults, see Amazon ECS Task Definitions in the Amazon EC2 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.

          • 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.

    • status (string) --

      The status of the task definition.

    • requiresAttributes (list) --

      The container instance attributes required by your task.

      • (dict) --

        The attributes applicable to a container instance when it is registered.

        • name (string) --

          The name of the container instance attribute.

        • value (string) --

          The value of the container instance attribute (at this time, the value here is Null , but this could change in future revisions for expandability).

{'tasks': {'overrides': {'taskRoleArn': 'string'}}}

Describes a specified task or tasks.

Request Syntax

client.describe_tasks(
    cluster='string',
    tasks=[
        'string',
    ]
)

type cluster

string

param cluster

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.

type tasks

list

param tasks

[REQUIRED]

A space-separated list of task IDs or full Amazon Resource Name (ARN) entries.

• (string) --

rtype

dict

returns

Response Syntax

{
    'tasks': [
        {
            'taskArn': 'string',
            'clusterArn': 'string',
            'taskDefinitionArn': 'string',
            'containerInstanceArn': 'string',
            'overrides': {
                'containerOverrides': [
                    {
                        'name': 'string',
                        'command': [
                            'string',
                        ],
                        'environment': [
                            {
                                'name': 'string',
                                'value': 'string'
                            },
                        ]
                    },
                ],
                'taskRoleArn': 'string'
            },
            'lastStatus': 'string',
            'desiredStatus': 'string',
            'containers': [
                {
                    'containerArn': 'string',
                    'taskArn': 'string',
                    'name': 'string',
                    'lastStatus': 'string',
                    'exitCode': 123,
                    'reason': 'string',
                    'networkBindings': [
                        {
                            'bindIP': 'string',
                            'containerPort': 123,
                            'hostPort': 123,
                            'protocol': 'tcp'|'udp'
                        },
                    ]
                },
            ],
            'startedBy': 'string',
            'stoppedReason': 'string',
            'createdAt': datetime(2015, 1, 1),
            'startedAt': datetime(2015, 1, 1),
            'stoppedAt': datetime(2015, 1, 1)
        },
    ],
    '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 Amazon Resource Name (ARN) of the cluster that hosts the task.

      • taskDefinitionArn (string) --

        The Amazon Resource Name (ARN) of the task definition that creates the task.

      • containerInstanceArn (string) --

        The Amazon Resource Name (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.

            • command (list) --

              The command to send to the container that overrides the default command from the Docker image or the task definition.

              • (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.

              • (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.

        • 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.

      • lastStatus (string) --

        The last known status of the task.

      • desiredStatus (string) --

        The desired status of the task.

      • 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 Amazon Resource Name (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 detail 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 be 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.

      • 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.

      • stoppedReason (string) --

        The reason the task was stopped.

      • createdAt (datetime) --

        The Unix time in seconds and milliseconds when the task was created (the task entered the PENDING state).

      • startedAt (datetime) --

        The Unix time in seconds and milliseconds when the task was started (the task transitioned from the PENDING state to the RUNNING state).

      • stoppedAt (datetime) --

        The Unix time in seconds and milliseconds when the task was stopped (the task transitioned from the RUNNING state to the STOPPED state).

  • 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.

{'taskRoleArn': 'string'}

{'taskDefinition': {'taskRoleArn': 'string'}}

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 EC2 Container Service Developer Guide .

You may also 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 EC2 Container Service Developer Guide .

Request Syntax

client.register_task_definition(
    family='string',
    taskRoleArn='string',
    containerDefinitions=[
        {
            'name': 'string',
            'image': 'string',
            'cpu': 123,
            'memory': 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
                },
            ],
            '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',
                'options': {
                    'string': 'string'
                }
            }
        },
    ],
    volumes=[
        {
            'name': 'string',
            'host': {
                'sourcePath': 'string'
            }
        },
    ]
)

type family

string

param family

[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.

type taskRoleArn

string

param taskRoleArn

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.

type containerDefinitions

list

param containerDefinitions

[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 `` repository-url /image :tag `` . 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 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. 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 number of MiB of memory to reserve for the container. You must specify a non-zero integer for this parameter; 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. If your container attempts to exceed the memory allocated 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 .

  • 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. 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/userguide/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. This parameter maps to PortBindings in the Create a container section of the Docker Remote API and the --publish option to docker run .

    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 of 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. 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 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. 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 is 49153 to 65535, and this range is used for Docker versions prior to 1.6.0. For Docker version 1.6.0 and later, the Docker daemon tries to read the ephemeral port range from /proc/sys/net/ipv4/ip_local_port_range ; if this kernel parameter is unavailable, the default ephemeral port range is used. You should not attempt to specify a host port in the ephemeral port range, because these are reserved for automatic assignment. In general, ports below 32768 are outside of the ephemeral port range.

        The default reserved ports are 22 for SSH, the Docker ports 2375 and 2376, and the Amazon ECS container agent port 51678. 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 EC2 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/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/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 plain text 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. 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.

      • 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.

      • sourceContainer (string) --

        The name of the container 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 .

  • 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. 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 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 EC2 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 into 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 into 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. 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). Currently unsupported 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 into 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 EC2 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.

      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 provide support for 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 into 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 into your container instance and run the following command: sudo docker version | grep "Server API version"

      • (string) --

        • (string) --

type volumes

list

param volumes

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.

    • 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.

rtype

dict

returns

Response Syntax

{
    'taskDefinition': {
        'taskDefinitionArn': 'string',
        'containerDefinitions': [
            {
                'name': 'string',
                'image': 'string',
                'cpu': 123,
                'memory': 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
                    },
                ],
                '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',
                    'options': {
                        'string': 'string'
                    }
                }
            },
        ],
        'family': 'string',
        'taskRoleArn': 'string',
        'revision': 123,
        'volumes': [
            {
                'name': 'string',
                'host': {
                    'sourcePath': 'string'
                }
            },
        ],
        'status': 'ACTIVE'|'INACTIVE',
        'requiresAttributes': [
            {
                'name': 'string',
                'value': '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 EC2 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 `` repository-url /image :tag `` . 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 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. 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 number of MiB of memory to reserve for the container. You must specify a non-zero integer for this parameter; 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. If your container attempts to exceed the memory allocated 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 .

        • 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. 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/userguide/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. This parameter maps to PortBindings in the Create a container section of the Docker Remote API and the --publish option to docker run .

          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 of 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. 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 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. 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 is 49153 to 65535, and this range is used for Docker versions prior to 1.6.0. For Docker version 1.6.0 and later, the Docker daemon tries to read the ephemeral port range from /proc/sys/net/ipv4/ip_local_port_range ; if this kernel parameter is unavailable, the default ephemeral port range is used. You should not attempt to specify a host port in the ephemeral port range, because these are reserved for automatic assignment. In general, ports below 32768 are outside of the ephemeral port range.

              The default reserved ports are 22 for SSH, the Docker ports 2375 and 2376, and the Amazon ECS container agent port 51678. 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 EC2 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/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/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 plain text 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. 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.

            • 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.

            • sourceContainer (string) --

              The name of the container 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 .

        • 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. 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 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 EC2 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 into 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 into 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. 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). Currently unsupported 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 into 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 EC2 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.

            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 provide support for 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 into 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 into 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 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.

    • 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. For more information about volume definition parameters and defaults, see Amazon ECS Task Definitions in the Amazon EC2 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.

          • 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.

    • status (string) --

      The status of the task definition.

    • requiresAttributes (list) --

      The container instance attributes required by your task.

      • (dict) --

        The attributes applicable to a container instance when it is registered.

        • name (string) --

          The name of the container instance attribute.

        • value (string) --

          The value of the container instance attribute (at this time, the value here is Null , but this could change in future revisions for expandability).

{'overrides': {'taskRoleArn': 'string'}}

{'tasks': {'overrides': {'taskRoleArn': 'string'}}}

Start a task using random placement and the default Amazon ECS scheduler. To use your own scheduler or place a task on a specific container instance, use StartTask instead.

Request Syntax

client.run_task(
    cluster='string',
    taskDefinition='string',
    overrides={
        'containerOverrides': [
            {
                'name': 'string',
                'command': [
                    'string',
                ],
                'environment': [
                    {
                        'name': 'string',
                        'value': 'string'
                    },
                ]
            },
        ],
        'taskRoleArn': 'string'
    },
    count=123,
    startedBy='string'
)

type cluster

string

param cluster

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..

type taskDefinition

string

param taskDefinition

[REQUIRED]

The family and revision (family:revision ) or full Amazon Resource Name (ARN) of the task definition to run. If a revision is not specified, the latest ACTIVE revision is used.

type overrides

dict

param overrides

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.

    • command (list) --

      The command to send to the container that overrides the default command from the Docker image or the task definition.

      • (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.

      • (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.

• 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.

type count

integer

param count

The number of instantiations of the specified task to place on your cluster.

Warning

The count parameter is limited to 10 tasks per call.

type startedBy

string

param startedBy

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.

rtype

dict

returns

Response Syntax

{
    'tasks': [
        {
            'taskArn': 'string',
            'clusterArn': 'string',
            'taskDefinitionArn': 'string',
            'containerInstanceArn': 'string',
            'overrides': {
                'containerOverrides': [
                    {
                        'name': 'string',
                        'command': [
                            'string',
                        ],
                        'environment': [
                            {
                                'name': 'string',
                                'value': 'string'
                            },
                        ]
                    },
                ],
                'taskRoleArn': 'string'
            },
            'lastStatus': 'string',
            'desiredStatus': 'string',
            'containers': [
                {
                    'containerArn': 'string',
                    'taskArn': 'string',
                    'name': 'string',
                    'lastStatus': 'string',
                    'exitCode': 123,
                    'reason': 'string',
                    'networkBindings': [
                        {
                            'bindIP': 'string',
                            'containerPort': 123,
                            'hostPort': 123,
                            'protocol': 'tcp'|'udp'
                        },
                    ]
                },
            ],
            'startedBy': 'string',
            'stoppedReason': 'string',
            'createdAt': datetime(2015, 1, 1),
            'startedAt': datetime(2015, 1, 1),
            'stoppedAt': datetime(2015, 1, 1)
        },
    ],
    'failures': [
        {
            'arn': 'string',
            'reason': 'string'
        },
    ]
}

Response Structure

• (dict) --

  • tasks (list) --

    A full description of the tasks that were run. Each task that was 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 Amazon Resource Name (ARN) of the cluster that hosts the task.

      • taskDefinitionArn (string) --

        The Amazon Resource Name (ARN) of the task definition that creates the task.

      • containerInstanceArn (string) --

        The Amazon Resource Name (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.

            • command (list) --

              The command to send to the container that overrides the default command from the Docker image or the task definition.

              • (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.

              • (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.

        • 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.

      • lastStatus (string) --

        The last known status of the task.

      • desiredStatus (string) --

        The desired status of the task.

      • 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 Amazon Resource Name (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 detail 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 be 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.

      • 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.

      • stoppedReason (string) --

        The reason the task was stopped.

      • createdAt (datetime) --

        The Unix time in seconds and milliseconds when the task was created (the task entered the PENDING state).

      • startedAt (datetime) --

        The Unix time in seconds and milliseconds when the task was started (the task transitioned from the PENDING state to the RUNNING state).

      • stoppedAt (datetime) --

        The Unix time in seconds and milliseconds when the task was stopped (the task transitioned from the RUNNING state to the STOPPED state).

  • 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.

{'overrides': {'taskRoleArn': 'string'}}

{'tasks': {'overrides': {'taskRoleArn': 'string'}}}

Starts a new task from the specified task definition on the specified container instance or instances. To use the default Amazon ECS scheduler to place your task, use RunTask instead.

Request Syntax

client.start_task(
    cluster='string',
    taskDefinition='string',
    overrides={
        'containerOverrides': [
            {
                'name': 'string',
                'command': [
                    'string',
                ],
                'environment': [
                    {
                        'name': 'string',
                        'value': 'string'
                    },
                ]
            },
        ],
        'taskRoleArn': 'string'
    },
    containerInstances=[
        'string',
    ],
    startedBy='string'
)

type cluster

string

param cluster

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..

type taskDefinition

string

param taskDefinition

[REQUIRED]

The family and revision (family:revision ) or full Amazon Resource Name (ARN) of the task definition to start. If a revision is not specified, the latest ACTIVE revision is used.

type overrides

dict

param overrides

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.

    • command (list) --

      The command to send to the container that overrides the default command from the Docker image or the task definition.

      • (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.

      • (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.

• 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.

type containerInstances

list

param containerInstances

[REQUIRED]

The container instance IDs or full Amazon Resource Name (ARN) entries for the container instances on which you would like to place your task.

Warning

The list of container instances to start tasks on is limited to 10.

• (string) --

type startedBy

string

param startedBy

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.

rtype

dict

returns

Response Syntax

{
    'tasks': [
        {
            'taskArn': 'string',
            'clusterArn': 'string',
            'taskDefinitionArn': 'string',
            'containerInstanceArn': 'string',
            'overrides': {
                'containerOverrides': [
                    {
                        'name': 'string',
                        'command': [
                            'string',
                        ],
                        'environment': [
                            {
                                'name': 'string',
                                'value': 'string'
                            },
                        ]
                    },
                ],
                'taskRoleArn': 'string'
            },
            'lastStatus': 'string',
            'desiredStatus': 'string',
            'containers': [
                {
                    'containerArn': 'string',
                    'taskArn': 'string',
                    'name': 'string',
                    'lastStatus': 'string',
                    'exitCode': 123,
                    'reason': 'string',
                    'networkBindings': [
                        {
                            'bindIP': 'string',
                            'containerPort': 123,
                            'hostPort': 123,
                            'protocol': 'tcp'|'udp'
                        },
                    ]
                },
            ],
            'startedBy': 'string',
            'stoppedReason': 'string',
            'createdAt': datetime(2015, 1, 1),
            'startedAt': datetime(2015, 1, 1),
            'stoppedAt': datetime(2015, 1, 1)
        },
    ],
    '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 are described here.

    • (dict) --

      Details on a task in a cluster.

      • taskArn (string) --

        The Amazon Resource Name (ARN) of the task.

      • clusterArn (string) --

        The Amazon Resource Name (ARN) of the cluster that hosts the task.

      • taskDefinitionArn (string) --

        The Amazon Resource Name (ARN) of the task definition that creates the task.

      • containerInstanceArn (string) --

        The Amazon Resource Name (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.

            • command (list) --

              The command to send to the container that overrides the default command from the Docker image or the task definition.

              • (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.

              • (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.

        • 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.

      • lastStatus (string) --

        The last known status of the task.

      • desiredStatus (string) --

        The desired status of the task.

      • 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 Amazon Resource Name (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 detail 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 be 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.

      • 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.

      • stoppedReason (string) --

        The reason the task was stopped.

      • createdAt (datetime) --

        The Unix time in seconds and milliseconds when the task was created (the task entered the PENDING state).

      • startedAt (datetime) --

        The Unix time in seconds and milliseconds when the task was started (the task transitioned from the PENDING state to the RUNNING state).

      • stoppedAt (datetime) --

        The Unix time in seconds and milliseconds when the task was stopped (the task transitioned from the RUNNING state to the STOPPED state).

  • 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': {'overrides': {'taskRoleArn': 'string'}}}

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 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.

Request Syntax

client.stop_task(
    cluster='string',
    task='string',
    reason='string'
)

type cluster

string

param cluster

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..

type task

string

param task

[REQUIRED]

The task ID or full Amazon Resource Name (ARN) entry of the task to stop.

type reason

string

param reason

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 will appear in subsequent DescribeTasks API operations on this task. Up to 255 characters are allowed in this message.

rtype

dict

returns

Response Syntax

{
    'task': {
        'taskArn': 'string',
        'clusterArn': 'string',
        'taskDefinitionArn': 'string',
        'containerInstanceArn': 'string',
        'overrides': {
            'containerOverrides': [
                {
                    'name': 'string',
                    'command': [
                        'string',
                    ],
                    'environment': [
                        {
                            'name': 'string',
                            'value': 'string'
                        },
                    ]
                },
            ],
            'taskRoleArn': 'string'
        },
        'lastStatus': 'string',
        'desiredStatus': 'string',
        'containers': [
            {
                'containerArn': 'string',
                'taskArn': 'string',
                'name': 'string',
                'lastStatus': 'string',
                'exitCode': 123,
                'reason': 'string',
                'networkBindings': [
                    {
                        'bindIP': 'string',
                        'containerPort': 123,
                        'hostPort': 123,
                        'protocol': 'tcp'|'udp'
                    },
                ]
            },
        ],
        'startedBy': 'string',
        'stoppedReason': 'string',
        'createdAt': datetime(2015, 1, 1),
        'startedAt': datetime(2015, 1, 1),
        'stoppedAt': datetime(2015, 1, 1)
    }
}

Response Structure

• (dict) --

  • task (dict) --

    Details on a task in a cluster.

    • taskArn (string) --

      The Amazon Resource Name (ARN) of the task.

    • clusterArn (string) --

      The Amazon Resource Name (ARN) of the cluster that hosts the task.

    • taskDefinitionArn (string) --

      The Amazon Resource Name (ARN) of the task definition that creates the task.

    • containerInstanceArn (string) --

      The Amazon Resource Name (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.

          • command (list) --

            The command to send to the container that overrides the default command from the Docker image or the task definition.

            • (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.

            • (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.

      • 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.

    • lastStatus (string) --

      The last known status of the task.

    • desiredStatus (string) --

      The desired status of the task.

    • 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 Amazon Resource Name (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 detail 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 be 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.

    • 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.

    • stoppedReason (string) --

      The reason the task was stopped.

    • createdAt (datetime) --

      The Unix time in seconds and milliseconds when the task was created (the task entered the PENDING state).

    • startedAt (datetime) --

      The Unix time in seconds and milliseconds when the task was started (the task transitioned from the PENDING state to the RUNNING state).

    • stoppedAt (datetime) --

      The Unix time in seconds and milliseconds when the task was stopped (the task transitioned from the RUNNING state to the STOPPED state).