export INFRA_ID=$(cat ./metadata.json |jq -r .infraID)

export ETCD_IP_LIST=""

for i in {0..2}     # If you have more than 3 masters, you should change the “2”
do
  etcd_ip=$(aws ec2 describe-instances --filters "Name=tag:Name,Values=${INFRA_ID}-master-${i}"  --query 'Reservations[*].Instances[*].PrivateIpAddress')
  ETCD_IP_LIST="${ETCD_IP_LIST} $etcd_ip"
done

# Check
echo ${ETCD_IP_LIST}