Use ExitStandby with a CLI

To move instances out of standby mode

This example moves the specified instance out of standby mode.

aws autoscaling exit-standby \
    --instance-ids i-061c63c5eb45f0416 \
    --auto-scaling-group-name my-asg

Output:

{
    "Activities": [
        {
            "ActivityId": "142928e1-a2dc-453a-9b24-b85ad6735928",
            "AutoScalingGroupName": "my-asg",
            "Description": "Moving EC2 instance out of Standby: i-061c63c5eb45f0416",
            "Cause": "At 2020-10-31T20:32:50Z instance i-061c63c5eb45f0416 was moved out of standby in response to a user request, increasing the capacity from 0 to 1.",
            "StartTime": "2020-10-31T20:32:50.222Z",
            "StatusCode": "PreInService",
            "Progress": 30,
            "Details": "{\"Subnet ID\":\"subnet-6194ea3b\",\"Availability Zone\":\"us-west-2c\"}"
        }
    ]
}

For more information, see Temporarily removing instances from your Auto Scaling group in the Amazon EC2 Auto Scaling User Guide.

Example 1: This example moves the specified instance out of standby mode.

Exit-ASStandby -InstanceId i-93633f9b -AutoScalingGroupName my-asg

Output:

ActivityId           : 1833d3e8-e32f-454e-b731-0670ad4c6934
AutoScalingGroupName : my-asg
Cause                : At 2015-11-22T15:51:21Z instance i-95b8484f was moved out of standby in response to a user 
                       request, increasing the capacity from 1 to 2.
Description          : Moving EC2 instance out of Standby: i-95b8484f
Details              : {"Availability Zone":"us-west-2b","Subnet ID":"subnet-5264e837"}
EndTime              : 
Progress             : 30
StartTime            : 11/22/2015 7:51:21 AM
StatusCode           : PreInService
StatusMessage        :