AWS CLI Command Reference

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[ aws . ecs ]

list-container-instances

Description

Returns a list of container instances in a specified cluster. You can filter the results of a ListContainerInstances operation with cluster query language statements inside the filter parameter. For more information, see Cluster Query Language in the Amazon Elastic Container Service Developer Guide .

See also: AWS API Documentation

See 'aws help' for descriptions of global parameters.

list-container-instances 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: containerInstanceArns

Synopsis

  list-container-instances
[--cluster <value>]
[--filter <value>]
[--status <value>]
[--cli-input-json <value>]
[--starting-token <value>]
[--page-size <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]

Options

--cluster (string)

The short name or full Amazon Resource Name (ARN) of the cluster that hosts the container instances to list. If you do not specify a cluster, the default cluster is assumed.

--filter (string)

You can filter the results of a ListContainerInstances operation with cluster query language statements. For more information, see Cluster Query Language in the Amazon Elastic Container Service Developer Guide .

--status (string)

Filters the container instances by status. For example, if you specify the DRAINING status, the results include only container instances that have been set to DRAINING using UpdateContainerInstancesState . If you don't specify this parameter, the default is to include container instances set to all states other than INACTIVE .

Possible values:

  • ACTIVE
  • DRAINING
  • REGISTERING
  • DEREGISTERING
  • REGISTRATION_FAILED

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI 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.

--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. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See 'aws help' for descriptions of global parameters.

Examples

To list the container instances in a cluster

The following list-container-instances example lists all of the available container instances in a cluster.

aws ecs list-container-instances --cluster MyCluster

Output:

{
    "containerInstanceArns": [
        "arn:aws:ecs:us-west-2:123456789012:container-instance/MyCluster/a1b2c3d4-5678-90ab-cdef-11111EXAMPLE",
        "arn:aws:ecs:us-west-2:123456789012:container-instance/MyCluster/a1b2c3d4-5678-90ab-cdef-22222EXAMPLE"
    ]
}

For more information, see Amazon ECS Container Instances in the Amazon ECS Developer Guide.

Output

containerInstanceArns -> (list)

The list of container instances with full ARN entries for each container instance associated with the specified cluster.

(string)

nextToken -> (string)

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