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Hi Vinay,
For your purpose, you may want to use the lifecycle hook (activated by the ASG service when it prepares termination) corresponding to instance termination in the ASG: https://docs.aws.amazon.com/autoscaling/ec2/userguide/lifecycle-hooks.html#lifecycle-hooks-availability
And then, in this hook, you send detach commands to ASG service to remove this instance from the group: see https://docs.aws.amazon.com/autoscaling/ec2/userguide/detach-instance-asg.html
Best,
Didier
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AWS 官方已更新 5 个月前
Detach can only be run on InService instances. It will fail on ones in Terminating:Wait
But the hook would give time to notify a human to manually investigate or have a snapshot taken to be reviewed later