Emoji Vending Machine

This repository is a companion part of my talk "Instrumenta tu app con Prometheus" at PyConES 2018.

It has the code exposed on the talk, and it's also a playground to poke with Grafana and Prometheus metrics.

Run the project

To run this project you need: make, docker, & docker-compose.

Run make setup to create local folders for docker volumes and to download fonts and emoji data.

To run the project you could do one of the following:

• make up will start the project in background.
• make run will start the project in foregroung, dumping docker-compose logs to stdout.
• make run-debug will start the project in debug mode, dumping docker-compose logs to stdout.

Once you run the project, this endpoints will be exposed on your local machine:

• EmojiVending app: http://localhost:8080
• Grafana: http://localhost:3000
• Prometheus: http://localhost:9090
• Node-Exporter: http://localhost:9100
• Locust: http://localhost:8089

To stop the containers of the project, just run make down.

Play

Play with the project, you can:

• Take a look at the EmojiVending app and get some emojis.
• Then you can take a look at the Prometheus Graph explorer and Grafana.
• Run the preconfigured locust job to simulate traffic and take a look back at Grafana dashboard.
• Take a look at Node-Exporter exported metrics.
• Tweak Gafana dashboards or create new ones.