# Viewing Details of a Backend Server

#### Function

This API is used to view details of a backend server.

#### URI

GET /v3/{project_id}/elb/pools/{pool_id}/members/{member_id}

Table 1 Path parameters
Parameter | Mandatory | Type | Description
--- | --- | --- | ---
project_id | Yes | String | Specifies the project ID.
pool_id | Yes | String | Specifies the ID of the backend server group.
member_id | Yes | String | Specifies the backend server ID.

#### Request Parameters

Table 2 Request header parameters
Parameter | Mandatory | Type | Description
--- | --- | --- | ---
X-Auth-Token | Yes | String | Specifies the token used for IAM authentication.

#### Response Parameters

Status code: 200

Table 3 Response body parameters
Parameter | Type | Description
--- | --- | ---
request_id | String | Specifies the request ID. The value is automatically generated.
member | Member object | Specifies the backend server.

Table 4 Member
Parameter | Type | Description
--- | --- | ---
address | String | Specifies the IP address of the backend server. The IP address must be in the subnet specified by subnet_cidr_id, for example, 192.168.3.11. The IP address can only be the IP address of the primary NIC.
admin_state_up | Boolean | Specifies the administrative status of the backend server. Although this parameter can be used in the APIs for creating and updating backend servers, its actual value depends on whether cloud servers exist. If cloud servers exist, the value is true. Otherwise, the value is false. Default: true
id | String | Specifies the backend server ID.
name | String | Specifies the backend server name.

operating_status

String

Specifies the operating status of the backend server. The value can be one of the following:

- ONLINE: The backend server is running normally.

- NO_MONITOR: No health check is configured for the backend server group to which the backend server belongs.

- OFFLINE: The cloud server used as the backend server is stopped or does not exist.

project_id | String | Specifies the project ID.
protocol_port | Integer | Specifies the port used by the backend server to receive requests. Minimum: 1 Maximum: 65535
subnet_cidr_id | String | Specifies the ID of the subnet where the backend server works. This subnet must be in the VPC as the subnet of the load balancer associated with the backend server. Only IPv4 subnets are supported. If the value is left blank, the backend server is not in the load balancer's VPC.
weight | Integer | Specifies the weight of the backend server. Requests are routed to backend servers in the same backend server group based on their weights. If the weight is 0, the backend server will not accept new requests. This parameter is invalid when lb_algorithm is set to SOURCE_IP for the backend server group that contains the backend server. Minimum: 0 Maximum: 100 Default: 1
ip_version | String | This is a read-only attribute, which is automatically generated based on the address parameter. The value can be v4 or v6. Default: v4

#### Example Requests

    GET

    https://{elb_endpoint}/v3/99a3fff0d03c428eac3678da6a7d0f24/elb/pools/36ce7086-a496-4666-9064-5ba0e6840c75/members/1923923e-fe8a-484f-bdbc-e11559b1f48f

#### Example Responses

Status code: 200

Successful request.

    {
      "member" : {
        "name" : "My member",
        "weight" : 10,
        "admin_state_up" : false,
        "subnet_cidr_id" : "c09f620e-3492-4429-ac15-445d5dd9ca74",
        "project_id" : "99a3fff0d03c428eac3678da6a7d0f24",
        "address" : "120.10.10.16",
        "protocol_port" : 89,
        "id" : "1923923e-fe8a-484f-bdbc-e11559b1f48f",
        "operating_status" : "NO_MONITOR",
        "ip_version" : "v4"
      },
      "request_id" : "45688823-45f1-40cd-9d24-e51a9574a45b"
    }

#### Status Codes

Status Code | Description
--- | ---
200 | Successful request.

#### Error Codes

See Error Codes.

Parent topic: Backend Server