list-task-definitions¶

Description¶

Returns a list of task definitions that are registered to your account. You can filter the results by family name with the familyPrefix parameter or by status with the status parameter.

Synopsis¶

  list-task-definitions
[--family-prefix <value>]
[--status <value>]
[--sort <value>]
[--cli-input-json | --cli-input-yaml]
[--starting-token <value>]
[--page-size <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]

Options¶

--family-prefix (string)

The full family name to filter the ListTaskDefinitions results with. Specifying a familyPrefix limits the listed task definitions to task definition revisions that belong to that family.

--status (string)

The task definition status to filter the ListTaskDefinitions results with. By default, only ACTIVE task definitions are listed. By setting this parameter to INACTIVE , you can view task definitions that are INACTIVE as long as an active task or service still references them. If you paginate the resulting output, be sure to keep the status value constant in each subsequent request.

Possible values:

ACTIVE

INACTIVE

--sort (string)

The order to sort the results in. Valid values are ASC and DESC . By default, (ASC ) task definitions are listed lexicographically by family name and in ascending numerical order by revision so that the newest task definitions in a family are listed last. Setting this parameter to DESC reverses the sort order on family name and revision. This is so that the newest task definitions in a family are listed first.

Possible values:

ASC

DESC

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--starting-token (string)

A token to specify where to start paginating. This is the NextToken from a previously truncated response.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--page-size (integer)

The size of each page to get in the AWS service call. This does not affect the number of items returned in the command’s output. Setting a smaller page size results in more calls to the AWS service, retrieving fewer items in each call. This can help prevent the AWS service calls from timing out.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--max-items (integer)

The total number of items to return in the command’s output. If the total number of items available is more than the value specified, a NextToken is provided in the command’s output. To resume pagination, provide the NextToken value in the starting-token argument of a subsequent command. Do not use the NextToken response element directly outside of the AWS CLI.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

See ‘aws help’ for descriptions of global parameters.

Examples¶

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal’s quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

Example 1: To list the registered task definitions

The following list-task-definitions example lists all of the registered task definitions.

aws ecs list-task-definitions

Output:

{
    "taskDefinitionArns": [
        "arn:aws:ecs:us-west-2:123456789012:task-definition/sleep300:2",
        "arn:aws:ecs:us-west-2:123456789012:task-definition/sleep360:1",
        "arn:aws:ecs:us-west-2:123456789012:task-definition/wordpress:3",
        "arn:aws:ecs:us-west-2:123456789012:task-definition/wordpress:4",
        "arn:aws:ecs:us-west-2:123456789012:task-definition/wordpress:5",
        "arn:aws:ecs:us-west-2:123456789012:task-definition/wordpress:6"
    ]
}

Example 2: To list the registered task definitions in a family

The following list-task-definitions example lists the task definition revisions of a specified family.

aws ecs list-task-definitions --family-prefix wordpress

Output:

{
    "taskDefinitionArns": [
        "arn:aws:ecs:us-west-2:123456789012:task-definition/wordpress:3",
        "arn:aws:ecs:us-west-2:123456789012:task-definition/wordpress:4",
        "arn:aws:ecs:us-west-2:123456789012:task-definition/wordpress:5",
        "arn:aws:ecs:us-west-2:123456789012:task-definition/wordpress:6"
    ]
}

For more information, see Amazon ECS Task Definitions in the Amazon ECS Developer Guide.

Output¶

taskDefinitionArns -> (list)

The list of task definition Amazon Resource Name (ARN) entries for the ListTaskDefinitions request.

(string)

nextToken -> (string)

The nextToken value to include in a future ListTaskDefinitions request. When the results of a ListTaskDefinitions request exceed maxResults , this value can be used to retrieve the next page of results. This value is null when there are no more results to return.

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