xxxxxxxxxx
aws ec2 describe-instances \
| jq -r \
".Reservations[].Instances[] \
| select(.SecurityGroups[]\
.GroupName==\"nodes.$NAME\")\
.Placement.AvailabilityZone" \
| tee zones
AZ_1=$(cat zones | head -n 1)
AZ_2=$(cat zones | tail -n 1)