Function

ECS specifications can be modified, for example, upgrading the vCPUs and memory, to meet service requirements. This API is used to modify ECS specifications.

An ECS flavor cannot be changed to certain flavors. For details, see Querying the Target Flavors to Which an ECS Flavor Can Be Changed.

Constraints

You can modify the ECS specifications only when the ECS is stopped.

URI

POST /v1/{project_id}/cloudservers/{server_id}/resize

Table 1 describes the parameters in the URI.

**Table 1** Parameter description
Parameter	Mandatory	Description
project_id	Yes	Specifies the project ID.
server_id	Yes	Specifies the ECS ID.

Request

Table 2 describes the request parameters.

**Table 2** Request parameters
Parameter	Mandatory	Type	Description
resize	Yes	Object	Specifies the operation to modify ECS specifications. For details, see Table 3.

**Table 3** **resize** field description
Parameter	Mandatory	Type	Description
flavorRef	Yes	String	Specifies the flavor ID of the ECS after the modification.

Response

See Responses (Task).

Example Request

POST https://{endpoint}/v1/{project_id}/cloudservers/{server_id}/resize

{
"resize": {
        "flavorRef": "c3.15xlarge.2"
    }
}

Example Response

None

Returned Values

See Returned Values for General Requests.

Error Codes

See Error Codes.

Modifying the Specifications of an ECS