Web App with Metrics Demo

Build and run

This project uses docker-compose to build and run all the required services. Make sure you have docker-compose installed (https://docs.docker.com/compose/install/) and run the following command on the main directory of this project:

docker-compose up

Exposed services and endpoints

Once the services are up and running, the following services should be available:

• Prometheus: http://localhost:9090/
• Grafana dashboard: http://localhost:3000/login
• Web application: http://localhost:5000/
• Web application metrics: http://localhost:5000/metrics
• cAdvisor: http://localhost:8080/

Grafana

Grafana is available on http://localhost:3000/login. The credentials are:

• Username: admin
• Password: admin

You can find the following dashboards already configured:

• Web App: it shows metrics from the web application. http://localhost:3000/d/u_DVKhQiz/web-app?orgId=1&refresh=5s
• Docker containers: metrics of all the running containers:
  • cadvisor
  • grafana
  • prometheus
  • web_app http://localhost:3000/d/KiNZkr-Gz/docker-containers?orgId=1&refresh=10s

Web App

It's a simple web application written in python3, using flask.

The metrics are exported using flask_prometheus_metrics.

Generate traffic on the app

In order to generate metrics to visualize interesting data on prometheus/grafana, you can execute this simple loop in bash:

while true; do curl localhost:5000/$RANDOM; curl localhost:5000/; curl localhost:5000/metrics; curl localhost:5000/404; curl localhost:5000/asdf; sleep 0.01; done

Screenshots

Web App dashboard