C++ TCP Server on Kubernetes

High-performance TCP microservice in C++ with automated deployment via ArgoCD on local Kubernetes.

Stack

• Language: C++17
• Container: Docker (multi-stage build with GCC)
• Orchestration: Kubernetes (Kind)
• GitOps: ArgoCD
• Healthcheck: TCP Socket Probe

Structure

├── app/
│   ├── main.cpp              # TCP Server
│   ├── Dockerfile            # Multi-stage build
│   └── .dockerignore
├── k8s-manifests/
│   ├── deployment.yaml       # Deployment (2 replicas)
│   ├── service.yaml          # NodePort Service
│   └── kustomization.yaml
├── scripts/
│   └── connect.ps1           # TCP connection script
├── kind-config.yaml          # Cluster config
└── argocd-app.yaml           # GitOps Application

Endpoints

Port	Protocol	Description
30080	TCP	Exposed service
8000	TCP	Container port / Healthcheck

Response: {"status":"ok","service":"cpp-server"}

Quick Start

Connect to the server

# Using the provided script
.\scripts\connect.ps1

# With custom parameters
.\scripts\connect.ps1 -Server localhost -Port 30080

ArgoCD

• URL: https://localhost
• User: admin
• Password: admin

Exposed via ingress-nginx with SSL passthrough — no port-forward needed.

Commands

# Pod status
kubectl get pods -l app=cpp-server

# Logs
kubectl logs -l app=cpp-server -f

# Restart
kubectl rollout restart deployment/cpp-server

# Build and deploy
docker build -t cpp-server:v1 ./app
kind load docker-image cpp-server:v1 --name cpp-cluster
kubectl rollout restart deployment/cpp-server

# ArgoCD UI (directly accessible at https://localhost)

# Delete cluster
kind delete cluster --name cpp-cluster

License

MIT