A simple distributed application running across multiple Docker containers.
The folder k8s-specifications contains the YAML specifications of the Voting App's services.
Run the following command to create the deployments and services. Note it will create these resources in your current namespace (default if you haven't changed it.)
kubectl create -f k8s-specifications/The vote web app is then available on port 31000 on each host of the cluster, the result web app is available on port 31001.
To remove them, run:
kubectl delete -f k8s-specifications/
- A front-end web app in Python which lets you vote between two options
- A Redis which collects new votes
- A .NET worker which consumes votes and stores them in…
- A Postgres database backed by a Docker volume
- A Node.js web app which shows the results of the voting in real time
The voting application only accepts one vote per client browser. It does not register additional votes if a vote has already been submitted from a client.
This isn't an example of a properly architected perfectly designed distributed app... it's just a simple example of the various types of pieces and languages you might see (queues, persistent data, etc), and how to deal with them in Docker at a basic level.