RemoveBackendServers - Developer Guide| Alibaba Cloud Documentation Center

Description

Remove one or more ECS instances from the backend server pool.

Note: No error will be returned if an ECS instance to be removed does not exist in the backend server pool.

Request parameter

Name	Type	Required	Description
Action	String	Yes	The action to perform. Valid value: `RemoveBackendServers`
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	A list of backend servers. Up to 20 backend servers can be contained in one request. 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. `Weight` is the weight of the ECS instance in the range of 1-100, 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 SLB instance.
BackendServers	JSON String	The list of the backend servers of the SLB instance, containing the following: `ServerId` is the ID of the ECS instance. `Weight` is the weight of the ECS instance in the range of 1-100, the default value is 100. The ECS instance with higher weight receives more requests.

Example

Request example

https://slb.aliyuncs.com/?Action=RemoveBackendServers
&LoadBalancerId=139a00604ad-cn-east-hangzhou-01
&BackendServers=[" vm-233"," vm-234"]
&<CommonParameter>

Response example

XML format

<?xml version="1.0" encoding="UTF-8"?>
<RemoveBackendServersResponse>
<RequestId>365F4154-92F6-4AE4-92F8-7FF34B540710</RequestId>
<LoadBalancerId>139a00604ad-cn-east-hangzhou-01</LoadBalancerId>
<BackendServers>
  <BackendServer>
      <ServerId>vm-231</ServerId>
      <Weight>100</Weight>
  </BackendServer>
  <BackendServer>
      <ServerId>vm-232</ServerId>
      <Weight>100</Weight>
  </BackendServer>
</BackendServers>
</RemoveBackendServersResponse>

JSON format

{
  "RequestId":"365F4154-92F6-4AE4-92F8-7FF34B540710",
  "LoadBalancerId":"139a00604ad-cn-east-hangzhou-01",
  "BackendServers":{
      "BackendServer": [
      {"ServerId":"vm-231",
      "Weight":100},
      {"ServerId":"vm-232",
      "Weight":100}
      ]
  }
}