Prometheus AWS Daily Cost Exporter

Intro

Are you looking for some system that alerts when your today's spending on AWS exceeds some limit? That's just what this exporter is made for.

CloudWatch doesn't allow you to track costs in the same day, just past days or monthly predictions.

The exporter is a Python server that connects to AWS Cost Explorer with a customizable period, and exposes last responses as Prometheus metrics.

Configuration

Configuration is made through environment variables:

Environment variable	Description	Default
QUERY_PERIOD	Period to update metrics, querying AWS Cost Explorer API (0.01$ per request)	1800
METRIC_TODAY_DAILY_COSTS	Enable aws_today_daily_costs metric	Not set
METRIC_YESTERDAY_DAILY_COSTS	Enable aws_yesterday_daily_costs metric	Not set
METRIC_TODAY_DAILY_USAGE	Enable aws_today_daily_usage metric	Not set
METRIC_TODAY_DAILY_USAGE_NORM	Enable aws_today_daily_usage_norm metric	Not set

Quickstart

IAM permissions

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "VisualEditor0",
            "Effect": "Allow",
            "Action": "ce:*",
            "Resource": "*"
        }
    ]
}

Docker

Run on localhost

docker run -e  METRIC_TODAY_DAILY_COSTS=yes -p 5000:5000 nachomillangarcia/prometheus_aws_cost_exporter:latest

Run on public machine

docker run -e  METRIC_TODAY_DAILY_COSTS=yes -p 5000:5000 nachomillangarcia/prometheus_aws_cost_exporter:latest --host 0.0.0.0

Kubernetes

Use the provided Helm Chart in this repository to add this service to your Kubernetes cluster

cd helm
helm install -e METRIC_TODAY_DAILY_COSTS=yes --name prometheus-aws-cost-exporter --namespace kube-system .

To grant necessary AWS IAM permissions, I suggest to use kube2iam. Pod annotations are customizable for this chart, check the README.md in helm folder