问题
Is it possible to determine from instance if it's a member of AutoScaling Group in AWS?
Thanks in advance!
回答1:
You can run this command on an EC2 Linux instance to check if the current instance is in an AutoScaling group. You will need to check if the returned value is empty to determine if it is in an AutoScaling group or not.
aws autoscaling describe-auto-scaling-instances --instance-ids `curl --silent http://169.254.169.254/latest/meta-data/instance-id 2>&1`
Note, you will have to have the AWS CLI tool installed and configured before you can run this command.
回答2:
Install AWS CLI on the instance and run this command: aws autoscaling describe-auto-scaling-instances
You can query the instance meta-data and compare the instance-id you have received from the previous command to check if the instance is part of autoscaling group.
To query instance-meta data, try curl http://169.254.169.254/latest/dynamic/instance-identity/document
来源：https://stackoverflow.com/questions/42161300/determine-if-instance-is-a-part-of-some-autoscaling-group-in-aws