SetBackendServers - Developer Guide| Alibaba Cloud Documentation Center

Description

Modify the weight of the backend servers.

Request parameter

Name	Type	Required	Description
Action	String	Yes	The action to perform. Valid value: `SetBackendServers`
RegionId	String	Yes	The ID of the region where the SLB instance is located.
LoadBalancerId	String	Yes	The ID of the SLB instance.
BackendServers	JSON String	Yes	The list of backend servers of the SLB instance. Up to 20 backend servers can be added at one time. The backend servers must be added in the following format: `[{"ServerId":"XXX","Weight":"XXX"},{"ServerId":"XXX","Weight":"XXX"}]` `ServerId` is the ID of the ECS instance to be added. `Weight` is the weight of the ECS instance in the range of 0-100, the default value is 100. The ECS instance with higher weight receives more requests.

Response parameter

Name	Type	Description
RequestId	String	The ID of the request.
LoadBalancerId	String	The ID of the Server Load Balancer instance.
BackendServers	List	The list of the backend servers.

Example

Request example

https://slb.aliyuncs.com/?Action=SetBackendServers
&LoadBalancerId=139a00604ad-cn-east-hangzhou-01
&BackendServers=[{"ServerId":"vm-233","Weight":"0"},{"ServerId":"vm-234","Weight":"0"}]
&<CommonParameters>

Response example

XML format

<?xml version="1.0" encoding="UTF-8"?>
<SetBackendServers>
<RequestId>365F4154-92F6-4AE4-92F8-7FF34B540710</RequestId>
<LoadBalancerId>139a00604ad-cn-east-hangzhou-01</LoadBalancerId>
<BackendServers>
  <BackendServer>
      <ServerId>vm-233</ServerId>
      <Weight>0</Weight>
  </BackendServer>
  <BackendServer>
      <ServerId>vm-234</ServerId>
      <Weight>0</Weight>
  </BackendServer>
</BackendServers>
</SetBackendServers>

JSON format

{
  "RequestId":"365F4154-92F6-4AE4-92F8-7FF34B540710",
  "LoadBalancerId":"139a00604ad-cn-east-hangzhou-01",
  "BackendServers":{
      “BackendServer”: [
          {"ServerId":"vm-233","Weight":0},
          {"ServerId":"vm-234","Weight":0}
      ]
  }
}