Auto Scaling:EnterStandby

Usage notes

• If load balancers are attached to your scaling group, the weight of each instance as a backend server is reset to 0.

• For an instance that is in the Standby state, you can manually remove the instance from your scaling group and release the instance as expected.

• During the effective period of a scale-in caused by instance number changes in your scaling group or an event-triggered task, Auto Scaling does not remove instances that are in the Standby state from the scaling group.

• If a Standby instance is currently undergoing a stop or restart process that renders it unhealthy, its health status is not updated to reflect this condition, and no automatic scale-in is triggered to remove the unhealthy instance from the scaling group. To enable the health status update, you must first move the instance out of the Standby state.

Request parameters

Response parameters

Examples

Sample requests

http(s)://ess.aliyuncs.com/?Action=EnterStandby
&ScalingGroupId=asg-bp1fo0dbtsbmqa9h****
&ClientToken=123e4567-e89b-12d3-a456-42665544****
&InstanceId=["i-28wt4****"]
&Async=false
&<Common request parameters>

Sample success responses

XML format

HTTP/1.1 200 OK
Content-Type:application/xml

<EnterStandbyResponse>
    <RequestId>473469C7-AA6F-4DC5-B3DB-A3DC0DE3****</RequestId>
    <ScalingActivityId>asa-2zeb04oym05qaceq****</ScalingActivityId>
</EnterStandbyResponse>

JSON format

HTTP/1.1 200 OK
Content-Type:application/json

{
  "RequestId" : "473469C7-AA6F-4DC5-B3DB-A3DC0DE3****",
  "ScalingActivityId" : "asa-2zeb04oym05qaceq****"
}

Error codes

For a list of error codes, see Service error codes.