GET

/#Action=ModifyCapacityReservationFleet

http://ec2.{region}.amazonaws.com/#Action=ModifyCapacityReservationFleet

Modifies a Capacity Reservation Fleet. When you modify the total target capacity of a Capacity Reservation Fleet, the Fleet automatically creates new Capacity Reservations, or modifies or cancels existing Capacity Reservations in the Fleet to meet the new total target capacity. When you modify the end date for the Fleet, the end dates for all of the individual Capacity Reservations in the Fleet are updated accordingly.

Access Token Required: API Key

Query Params

CapacityReservationFleetIdstringrequired

The ID of the Capacity Reservation Fleet to modify.

TotalTargetCapacityinteger

The total number of capacity units to be reserved by the Capacity Reservation Fleet. This value, together with the instance type weights that you assign to each instance type used by the Fleet determine the number of instances for which the Fleet reserves capacity. Both values are based on units that make sense for your workload. For more information, see <a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/crfleet-concepts.html#target-capacity">Total target capacity</a> in the Amazon EC2 User Guide.

EndDatestring

The date and time at which the Capacity Reservation Fleet expires. When the Capacity Reservation Fleet expires, its state changes to <code>expired</code> and all of the Capacity Reservations in the Fleet expire. The Capacity Reservation Fleet expires within an hour after the specified time. For example, if you specify <code>5/31/2019</code>, <code>13:30:55</code>, the Capacity Reservation Fleet is guaranteed to expire between <code>13:30:55</code> and <code>14:30:55</code> on <code>5/31/2019</code>. You can't specify EndDate and RemoveEndDate in the same request.

DryRunboolean

Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is <code>DryRunOperation</code>. Otherwise, it is <code>UnauthorizedOperation</code>.

RemoveEndDateboolean

Indicates whether to remove the end date from the Capacity Reservation Fleet. If you remove the end date, the Capacity Reservation Fleet does not expire and it remains active until you explicitly cancel it using the CancelCapacityReservationFleet action. You can't specify RemoveEndDate and EndDate in the same request.

Actionstringrequired

Allowed:

Versionstringrequired

Allowed:

Responses

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}

Language

CredentialsAPI KEY

API Key

Enter token below to save for later

cURL Request

1curl --request GET \
2     --url 'http://ec2.{region}.amazonaws.com/#Action=ModifyCapacityReservationFleet' \
3     --header 'accept: application/json' \
4     --header 'content-type: application/json'

Response

1{
2  "success": true,
3  "data": {
4    "id": "abc123",
5    "created_at": "2025-01-01T00:00:00Z"
6  }
7}