get-elb-usage.sh

START="$(date +'%Y-%m-%dT%H:%M:%S' --date '-5 minutes')";
END="$(date +'%Y-%m-%dT%H:%M:%S')";
aws elb describe-load-balancers | jq -r '.LoadBalancerDescriptions[].LoadBalancerName' | while read LB; do
    DATA=$(aws cloudwatch get-metric-statistics \
            --namespace AWS/ELB \
            --metric-name "RequestCount" \
            --dimensions '[{"Name":"LoadBalancerName","Value":"'$LB'"}]' \
            --start-time "$START" \
            --end-time "$END" \
            --period 60 \
            --statistics Sum);

    TAGS=$(aws elb describe-tags --load-balancer-names="$LB" | jq -r '.TagDescriptions[0].Tags[]')
    REQUEST_COUNT=$(echo "${DATA}"| jq -r '[.Datapoints[] | .Sum] | (max|@json)');
    echo $LB - $REQUEST_COUNT - $TAGS;
done