# Adding an ECS to the Monitoring List

#### Function

This API is used to add an ECS to the monitoring list.

Ceilometer periodically collects monitoring data on the ECSs added to the monitoring list and reports the data to Cloud Eye. The data includes the platform version, CPU, memory, NICs, disks, and hardware version. For example, the plug-in of an SAP ECS periodically obtains monitoring data from Cloud Eye and reports the data to SAP in reports.

#### URI

POST /v1.0/servers/{server_id}/action

Table 1 describes the parameters in the URI.

Table 1 Parameter description
Parameter | Mandatory | Description
--- | --- | ---
server_id | Yes | Specifies the ECS ID.

#### Request

Table 2 describes the request parameters.

Table 2 Request parameters
Parameter | Mandatory | Type | Description
--- | --- | --- | ---
monitorMetrics | Yes | Null | Enables monitoring on the ECS.

#### Response

None

#### Example Request

    POST https://{endpoint}/v1.0/servers/{server_id}/action

    {
       "monitorMetrics" : null
    }

#### Example Response

None

#### Returned Values

See Returned Values for General Requests.

#### Error Codes

See Error Codes.

Parent topic: Status Management