[ aws . ecs ]

list-task-definition-families

Description

Returns a list of task definition families that are registered to your account. This list includes task definition families that no longer have any ACTIVE task definition revisions.

You can filter out task definition families that don’t contain any ACTIVE task definition revisions by setting the status parameter to ACTIVE . You can also filter the results with the familyPrefix parameter.

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

list-task-definition-families is a paginated operation. Multiple API calls may be issued in order to retrieve the entire data set of results. You can disable pagination by providing the --no-paginate argument. When using --output text and the --query argument on a paginated response, the --query argument must extract data from the results of the following query expressions: families

Synopsis

  list-task-definition-families
[--family-prefix <value>]
[--status <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 familyPrefix is a string that’s used to filter the results of ListTaskDefinitionFamilies . If you specify a familyPrefix , only task definition family names that begin with the familyPrefix string are returned.

--status (string)

The task definition family status to filter the ListTaskDefinitionFamilies results with. By default, both ACTIVE and INACTIVE task definition families are listed. If this parameter is set to ACTIVE , only task definition families that have an ACTIVE task definition revision are returned. If this parameter is set to INACTIVE , only task definition families that do not have any ACTIVE task definition revisions are returned. If you paginate the resulting output, be sure to keep the status value constant in each subsequent request.

Possible values:

• ACTIVE

• INACTIVE

• ALL

--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 definition families

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

aws ecs list-task-definition-families

Output:

{
    "families": [
        "node-js-app",
        "web-timer",
        "hpcc",
        "hpcc-c4-8xlarge"
    ]
}

Example 2: To filter the registered task definition families

The following list-task-definition-families example lists the task definition revisions that start with “hpcc”.

aws ecs list-task-definition-families --family-prefix hpcc

Output:

{
    "families": [
        "hpcc",
        "hpcc-c4-8xlarge"
    ]
}

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

Output

families -> (list)

The list of task definition family names that match the ListTaskDefinitionFamilies request.

(string)

nextToken -> (string)

The nextToken value to include in a future ListTaskDefinitionFamilies request. When the results of a ListTaskDefinitionFamilies 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.