Mini Game Server

This is a sample solution for the Mini Game Server DevOps test. It consists of a Python script that represents a fake game server, a Dockerfile that containerizes the game server, and a Terraform script that deploys the game server to a local Minikube cluster.

Requirements

To use this solution, you will need the following:

• Python 3.9 or later
• Docker 20.10 or later
• Minikube 1.23 or later
• Terraform 1.0 or later

Installation

To install the solution, follow these steps:

1. Clone the repository:

git clone https://github.com/ArmanFeyzi/udp-game-server.git
cd udp-game-server

2. Build the Docker image:

docker build -t game-server .

Usage

To use the solution, follow these steps:

1. Run the game server container:

docker run -p 7778:7778/udp game-server

2. Send UDP packets to the game server:

nc -u localhost 7778

You should see the packet printed to the standard output of the container.

3. Deploy the game server to Minikube:

cd terraform
terraform init
terraform apply

4. Get the game server service URL:

minikube service game-server --url

You should see a URL like http://192.168.49.2:30840.

5. Send UDP packets to the game server service:

nc -u 192.168.49.2 30840

Design and Implementation

The solution consists of three main components:

1. The game server script (game_server.py) is a Python script that listens on UDP port 7778, prints everything it receives to standard output, and runs for exactly 10 minutes.

2. The Dockerfile (Dockerfile) creates a Docker image based on the python base image, installs the required libraries (socket and time), and copies the game server script to the image. And also set the default command to run the game server script.

3. The Terraform script (terraform/main.tf) uses the Kubernetes provider to create a deployment and a service for the game server. Also specified that the game server deployment should have a replica count of 1 and expose the UDP port 7778. Finally, we created a NodePort service to expose the game server outside the Minikube cluster.