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October 20, 2021 14:38
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Boilerplate for running an ssh command across EC2 instances in an AutoScalingGroup. Check disk status on EC2 instances in an Autoscaling group name.
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| ASG_NAME=myautoscalinggroup | |
| for ID in $(aws autoscaling describe-auto-scaling-instances --query 'AutoScalingInstances[?AutoScalingGroupName==`$ASG_NAME`].InstanceId' --output text); | |
| do | |
| IP=$(aws ec2 describe-instances --instance-ids $ID --query 'Reservations[].Instances[].PublicIpAddress' --output text) | |
| ssh -q -o "StrictHostKeyChecking no" -i ec2.pem ec2-user@$IP 'echo $(hostname): $(df -h | grep /dev/nvme1n1)' | |
| done |
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