name : enter-standby.rst **To move instances into standby mode** This example puts the specified instance into standby mode. This is useful for updating or troubleshooting an instance that is currently in service. :: aws autoscaling enter-standby \ --instance-ids i-061c63c5eb45f0416 \ --auto-scaling-group-name my-asg \ --should-decrement-desired-capacity Output:: { "Activities": [ { "ActivityId": "ffa056b4-6ed3-41ba-ae7c-249dfae6eba1", "AutoScalingGroupName": "my-asg", "Description": "Moving EC2 instance to Standby: i-061c63c5eb45f0416", "Cause": "At 2020-10-31T20:31:00Z instance i-061c63c5eb45f0416 was moved to standby in response to a user request, shrinking the capacity from 1 to 0.", "StartTime": "2020-10-31T20:31:00.949Z", "StatusCode": "InProgress", "Progress": 50, "Details": "{\"Subnet ID\":\"subnet-6194ea3b\",\"Availability Zone\":\"us-west-2c\"}" } ] } For more information, see `Amazon EC2 Auto Scaling instance lifecycle <https://docs.aws.amazon.com/autoscaling/ec2/userguide/detach-instance-asg.html>`__ in the *Amazon EC2 Auto Scaling User Guide*.