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ENS:SetBackendServers

Last Updated:Mar 12, 2024

Sets the weights of backend servers.

Operation description

  • You can call this operation up to 100 times per second.
  • You can call this operation up to 10 times per second per account.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Authorization information

There is currently no authorization information disclosed in the API.

Request parameters

ParameterTypeRequiredDescriptionExample
LoadBalancerIdstringYes

The ID of the Edge Load Balancer (ELB) instance.

lb-5s7crik3yo3bp03gqrbp5****
BackendServersobject []Yes

The list of backend servers that you want to add. You can modify at most 20 backend servers.

ServerIdstringYes

The ID of the instance that you want to use as the backend server.

i-5ze0o05xccvbljtn****
WeightintegerYes

The weight of the backend server. Default value: 100. Valid values: 0 to 100.

Note The value 0 indicates that requests are not forwarded to the backend server.
20
TypestringNo

The type of the backend server. Valid values:

  • ens: ENS instance.
  • eni: Elastic Network Interface (ENI) instance.
ens

Response parameters

ParameterTypeDescriptionExample
object

Schema of Response

RequestIdstring

The request ID.

473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E
BackendServersobject []

The backend servers.

ServerIdstring

The ID of the instance that you want to use as the backend server.

i-5uf6hj58zvml4ali8****
Weightinteger

The weight of the backend server. Default value: 100. Valid values: 0 to 100.

Note The value 0 indicates that requests are not forwarded to the backend server.
100
Typestring

The type of the backend server. Valid values:

  • ens: ENS instance.
  • eni: ENI instance.
ens
Ipstring

The IP address of the backend server.

192.168.0.1
Portinteger

The backend port that is used by the ELB instance.

0

Examples

Sample success responses

JSONformat

{
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E",
  "BackendServers": {
    "BackendServer": [
      {
        "ServerId": "i-5uf6hj58zvml4ali8****",
        "Weight": 100,
        "Type": "ens",
        "Ip": "192.168.0.1",
        "Port": 0
      }
    ]
  }
}

Error codes

HTTP status codeError codeError messageDescription
400ens.interface.errorAn error occurred while call the API.-
400LoadBalancerNotFoundThe input parameter loadBalancerId that is not found. -
400IncorrectInstanceStatusThe current status of the resource does not support this operation.The current operation is not supported. The disk is being reset.
400BackendServerNotFoundThe input parameter serverId that is not found.-
400Invalid%sThe specified parameter %s is invalid.-
400Missing%sYou must specify the parameter %s.-
400InstanceNotFoundThe input parameter instanceId that is not found.-
400NoPermissionPermission denied.-
400InvalidParameter.%sThe specified field %s invalid. Please check it again.-

For a list of error codes, visit the Service error codes.

Change history

Change timeSummary of changesOperation
2023-09-21The Error code has changedsee changesets
Change itemChange content
Error CodesThe Error code has changed.
    Error Codes 400 change