Help Center> API Gateway> API Reference> Dedicated Gateway APIs (V2)> VPC Channel Management> Adding or Updating a Backend Server Group of a VPC Channel

Updated on 2023-11-30 GMT+08:00

Online Debugging

CLI Examples

View PDF

Adding or Updating a Backend Server Group of a VPC Channel

Function

When creating a backend server group for a VPC channel, you can determine whether to associate backend instances with the group to facilitate backend server node management.

If a backend server group with the specified name already exists, the backend server group information is updated. If the request body contains multiple backend server definitions with the same address, the first definition is used.

Calling Method

For details, see Calling APIs.

URI

POST /v2/{project_id}/apigw/instances/{instance_id}/vpc-channels/{vpc_channel_id}/member-groups

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain it, see Obtaining a Project ID.
instance_id	Yes	String	Gateway ID, which can be obtained from the gateway information on the APIG console.
vpc_channel_id	Yes	String	VPC channel ID.

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token. It can be obtained by calling the IAM API used to obtain a user token. The value of X-Subject-Token in the response header is a token.

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
member_groups	No	Array of MemberGroupCreate objects	Backend server groups.

**Table 4** MemberGroupCreate
Parameter	Mandatory	Type	Description
member_group_name	Yes	String	Name of the VPC channel's backend server group. It can contain 3 to 64 characters, starting with a letter. Only letters, digits, underscores (_), hyphens (-), and periods (.) are allowed.
member_group_remark	No	String	Description of the backend server group. Maximum: 255
member_group_weight	No	Integer	Weight of the backend server group. If the server group contains servers and a weight has been set for it, the weight is automatically used to assign weights to servers in this group. Minimum: 0 Maximum: 100
dict_code	No	String	Dictionary code of the backend server group. The value can contain letters, digits, hyphens (-), underscores (_), and periods (.). Currently, this parameter is not supported. Minimum: 3 Maximum: 64
microservice_version	No	String	Version of the backend server group. This parameter is supported only when the VPC channel type is microservice. Maximum: 64
microservice_port	No	Integer	Port of the backend server group. This parameter is supported only when the VPC channel type is microservice. If the port number is 0, all addresses in the backend server group use the original load balancing port to inherit logic. Minimum: 0 Maximum: 65535
microservice_labels	No	Array of MicroserviceLabel objects	Tags of the backend server group. This parameter is supported only when the VPC channel type is microservice.

**Table 5** MicroserviceLabel
Parameter	Mandatory	Type	Description
label_name	Yes	String	Tag name. Start and end with a letter or digit. Use only letters, digits, hyphens (-), underscores (_), and periods (.). (Max. 63 characters.) Minimum: 1 Maximum: 63
label_value	Yes	String	Tag value. Start and end with a letter or digit. Use only letters, digits, hyphens (-), underscores (_), and periods (.). (Max. 63 characters.) Minimum: 1 Maximum: 63

Response Parameters

Status code: 201

**Table 6** Response body parameters
Parameter	Type	Description
size	Integer	Length of the returned resource list.
total	Long	Number of resources that match the query conditions.
member_groups	Array of MemberGroupInfo objects	Backend server groups of the VPC channel.

**Table 7** MemberGroupInfo
Parameter	Type	Description
member_group_name	String	Name of the VPC channel's backend server group. It can contain 3 to 64 characters, starting with a letter. Only letters, digits, underscores (_), hyphens (-), and periods (.) are allowed.
member_group_remark	String	Description of the backend server group. Maximum: 255
member_group_weight	Integer	Weight of the backend server group. If the server group contains servers and a weight has been set for it, the weight is automatically used to assign weights to servers in this group. Minimum: 0 Maximum: 100
dict_code	String	Dictionary code of the backend server group. The value can contain letters, digits, hyphens (-), underscores (_), and periods (.). Currently, this parameter is not supported. Minimum: 3 Maximum: 64
microservice_version	String	Version of the backend server group. This parameter is supported only when the VPC channel type is microservice. Maximum: 64
microservice_port	Integer	Port of the backend server group. This parameter is supported only when the VPC channel type is microservice. If the port number is 0, all addresses in the backend server group use the original load balancing port to inherit logic. Minimum: 0 Maximum: 65535
microservice_labels	Array of MicroserviceLabel objects	Tags of the backend server group. This parameter is supported only when the VPC channel type is microservice.
member_group_id	String	ID of the backend server group of the VPC channel.
create_time	String	Time when the backend server group is created.
update_time	String	Time when the backend server group is updated.

**Table 8** MicroserviceLabel
Parameter	Type	Description
label_name	String	Tag name. Start and end with a letter or digit. Use only letters, digits, hyphens (-), underscores (_), and periods (.). (Max. 63 characters.) Minimum: 1 Maximum: 63
label_value	String	Tag value. Start and end with a letter or digit. Use only letters, digits, hyphens (-), underscores (_), and periods (.). (Max. 63 characters.) Minimum: 1 Maximum: 63

Status code: 400

**Table 9** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Status code: 401

**Table 10** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Status code: 403

**Table 11** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Status code: 404

**Table 12** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Status code: 500

**Table 13** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Example Requests

Creating a backend server group for a VPC channel of the server type

{
  "member_groups" : [ {
    "member_group_name" : "vpc_member_group",
    "member_group_weight" : 10
  } ]
}

Creating a backend server group for a VPC channel of the microservice type

{
  "member_groups" : [ {
    "member_group_name" : "vpc_member_group",
    "member_group_weight" : 10,
    "microservice_version" : "v1",
    "microservice_port" : 80,
    "microservice_labels" : [ {
      "label_name" : "cluster_id",
      "label_value" : "c429700c-5dc4-482a-9c0e-99f6c0635113"
    } ]
  } ]
}

Example Responses

Status code: 201

Created

Example 1

{
  "total" : 1,
  "size" : 1,
  "member_groups" : [ {
    "member_group_name" : "vpc_member_group",
    "member_group_id" : "105c6902457144a4820dff8b1ad63331",
    "member_group_remark" : "",
    "member_group_weight" : 10,
    "create_time" : "2020-07-23T07:24:33Z",
    "update_time" : "2020-07-23T07:24:33Z",
    "microservice_version" : "",
    "microservice_port" : 0,
    "microservice_labels" : [ ]
  } ]
}

Example 2

{
  "total" : 1,
  "size" : 1,
  "member_groups" : [ {
    "member_group_name" : "vpc_member_group",
    "member_group_id" : "105c6902457144a4820dff8b1ad63331",
    "member_group_remark" : "",
    "member_group_weight" : 10,
    "create_time" : "2020-07-23T07:24:33Z",
    "update_time" : "2020-07-23T07:24:33Z",
    "microservice_version" : "v1",
    "microservice_port" : 80,
    "microservice_labels" : [ {
      "label_name" : "cluster_id",
      "label_value" : "c429700c-5dc4-482a-9c0e-99f6c0635113"
    } ]
  } ]
}

Status code: 400

Bad Request

{
  "error_code" : "APIG.2001",
  "error_msg" : "The request parameters must be specified, parameter name:name"
}

Status code: 401

Unauthorized

{
  "error_code" : "APIG.1002",
  "error_msg" : "Incorrect token or token resolution failed"
}

Status code: 403

Forbidden

{
  "error_code" : "APIG.1005",
  "error_msg" : "No permissions to request this method"
}

Status code: 404

Not Found

{
  "error_code" : "APIG.3023",
  "error_msg" : "The VPC channel does not exist,id:56a7d7358e1b42459c9d730d65b14e59"
}

Status code: 500

Internal Server Error

{
  "error_code" : "APIG.9999",
  "error_msg" : "System error"
}

Status Codes

Status Code	Description
201	Created
400	Bad Request
401	Unauthorized
403	Forbidden
404	Not Found
500	Internal Server Error

Error Codes

See Error Codes.

Parent topic: VPC Channel Management

Previous topic: Modifying VPC Channel Health Check

Next topic: Querying Backend Server Groups of a VPC Channel

Feedback

Was this page helpful?

Helpful Not helpful

Provide feedback

Thank you very much for your feedback. We will continue working to improve the documentation.See the reply and handling status in My Cloud VOC.

The system is busy. Please try again later.

Which of the following issues have you encountered?

Content is inconsistent with the product UI

Unclear descriptions

Lack of examples or code

Incorrect steps

Can't find what I need

Lack of best practices

Feedback (optional)

0/500

Select at least one type of issue, and enter your comments or suggestions.

Enter a maximum of 500 characters.

Submit Cancel

For any further questions, feel free to contact us through the chatbot.

Chatbot