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ASG Refresh Stuck

Symptom​

Instance refresh in progress for extended time.

Solutions​

1. Check instance health​

aws autoscaling describe-auto-scaling-groups \
  --auto-scaling-group-names statux-prod-asg-api \
  --query 'AutoScalingGroups[0].Instances'

2. Check target group health​

aws elbv2 describe-target-health --target-group-arn <arn>

3. Cancel and retry​

aws autoscaling cancel-instance-refresh \
  --auto-scaling-group-name statux-prod-asg-api