Request Syntax Request Parameters Response Syntax Response Elements Errors Examples See Also

ListDaemons

Returns a list of daemons. You can filter the results by cluster or capacity provider.

Request Syntax


{
   "capacityProviderArns": [ "string" ],
   "clusterArn": "string",
   "maxResults": number,
   "nextToken": "string"
}

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.

capacityProviderArns

The Amazon Resource Names (ARNs) of the capacity providers to filter daemons by. Only daemons associated with the specified capacity providers are returned.

Type: Array of strings

Required: No

clusterArn

The Amazon Resource Name (ARN) of the cluster to filter daemons by. If not specified, daemons from all clusters are returned.

Type: String

Required: No

maxResults

The maximum number of daemon results that ListDaemons returned in paginated output. When this parameter is used, ListDaemons only returns maxResults results in a single page along with a nextToken response element. The remaining results of the initial request can be seen by sending another ListDaemons request with the returned nextToken value. This value can be between 1 and 100. If this parameter isn't used, then ListDaemons returns up to 100 results and a nextToken value if applicable.

Type: Integer

Required: No

nextToken

The nextToken value returned from a ListDaemons request indicating that more results are available to fulfill the request and further calls will be needed. If maxResults was provided, it's possible for the number of results to be fewer than maxResults.

Note

This token should be treated as an opaque identifier that is only used to retrieve the next items in a list and not for other programmatic purposes.

Type: String

Required: No

Response Syntax


{
   "daemonSummariesList": [ 
      { 
         "createdAt": number,
         "daemonArn": "string",
         "status": "string",
         "updatedAt": number
      }
   ],
   "nextToken": "string"
}

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

daemonSummariesList

The list of daemon summaries.

Type: Array of DaemonSummary objects

nextToken

The nextToken value to include in a future ListDaemons request. When the results of a ListDaemons request exceed maxResults, this value can be used to retrieve the next page of results.

Type: String

Errors

For information about the errors that are common to all actions, see Common Error Types.

AccessDeniedException

You don't have authorization to perform the requested action.

message: Message that describes the cause of the exception.

HTTP Status Code: 400

ClientException

These errors are usually caused by a client action. This client action might be using an action or resource on behalf of a user that doesn't have permissions to use the action or resource. Or, it might be specifying an identifier that isn't valid.

message: Message that describes the cause of the exception.

HTTP Status Code: 400

ClusterNotFoundException

The specified cluster wasn't found. You can view your available clusters with ListClusters. Amazon ECS clusters are Region specific.

message: Message that describes the cause of the exception.

HTTP Status Code: 400

InvalidParameterException

The specified parameter isn't valid. Review the available parameters for the API request.

For more information about service event errors, see Amazon ECS service event messages.

message: Message that describes the cause of the exception.

HTTP Status Code: 400

ServerException

These errors are usually caused by a server issue.

message: Message that describes the cause of the exception.

HTTP Status Code: 500

UnsupportedFeatureException

The specified task isn't supported in this Region.

message: Message that describes the cause of the exception.

HTTP Status Code: 400

Examples

In the following example or examples, the Authorization header contents (AUTHPARAMS) must be replaced with an AWS Signature Version 4 signature. For more information, see Signature Version 4 Signing Process in the AWS General Reference.

You only need to learn how to sign HTTP requests if you intend to create them manually. When you use the AWS Command Line Interface or one of the AWS SDKs to make requests to AWS, these tools automatically sign the requests for you, with the access key that you specify when you configure the tools. When you use these tools, you don't have to sign requests yourself.

Example

This example lists all daemons in the specified cluster.

Sample Request


POST / HTTP/1.1
Host: ecs.us-east-1.amazonaws.com
Accept-Encoding: identity
Content-Length: 75
X-Amz-Target: AmazonEC2ContainerServiceV20141113.ListDaemons
X-Amz-Date: 20250320T160500Z
Content-Type: application/x-amz-json-1.1
Authorization: AUTHPARAMS

{
  "clusterArn": "arn:aws:ecs:us-east-1:123456789012:cluster/my-cluster"
}

Sample Response


HTTP/1.1 200 OK
Server: Server
Date: Thu, 20 Mar 2025 16:05:00 GMT
Content-Type: application/x-amz-json-1.1
Content-Length: 486
Connection: keep-alive
x-amzn-RequestId: 123a4b56-7c89-01d2-3ef4-example5678f

{
  "daemonSummariesList": [
    {
      "daemonArn": "arn:aws:ecs:us-east-1:123456789012:daemon/my-cluster/my-monitoring-daemon",
      "status": "ACTIVE",
      "createdAt": "2025-03-15T12:00:00.000Z",
      "updatedAt": "2025-03-20T15:30:00.000Z"
    },
    {
      "daemonArn": "arn:aws:ecs:us-east-1:123456789012:daemon/my-cluster/my-logging-daemon",
      "status": "ACTIVE",
      "createdAt": "2025-03-16T09:00:00.000Z",
      "updatedAt": "2025-03-16T09:00:00.000Z"
    }
  ]
}