Self-Healing and Scalable Application Deployment using Kubernetes with CI/CD Automation

Overview

This project demonstrates deployment of a scalable and fault-tolerant Go web application using Kubernetes and modern DevOps technologies.

The infrastructure supports:

• High availability using multiple replicas
• Kubernetes self-healing
• Horizontal Pod Autoscaling (HPA)
• Docker containerization
• CI/CD automation with GitHub Actions
• Docker Hub integration

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Technologies Used

• Go
• Docker
• Kubernetes
• GitHub Actions
• Docker Hub
• Git

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Project Structure

.
├── k8s/
│   ├── deployment.yaml
│   ├── service.yaml
│   └── hpa.yaml
├── .github/workflows/
│   └── ci-cd.yml
├── Dockerfile
├── main.go
└── README.md

Installation and Running

Requirements

Install the following tools:

• Docker
• Minikube
• kubectl
• Git

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Clone Repository

git clone https://github.com/ustkost/sna_devops_project
cd sna_devops_project

Start multi-node Minikube cluster:

minikube start --nodes 3

Deploy Application

kubectl apply -f k8s/deployment.yaml
kubectl apply -f k8s/service.yaml
kubectl apply -f k8s/hpa.yaml

Verify Deployment

kubectl get nodes
kubectl get pods -o wide
kubectl get svc
kubectl get hpa

Open Application

minikube service sna-project

Test Self-Healing

Delete one of the pods:

kubectl delete pod <pod-name>

Kubernetes automatically recreates the pod.

Test Autoscaling

Generate load:

curl http://<service-ip>/load

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Docker

Build image

docker build -t myapp .

Run container

docker run -p 8080:8080 myapp

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CI/CD Pipeline

GitHub Actions pipeline automatically:

• Builds the Go application
• Builds Docker image
• Pushes image to Docker Hub

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Team Members

• Timur — Go application, Docker, CI/CD, documentation
• Konstantin — Kubernetes configuration, autoscaling, demo

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Demo

https://drive.google.com/drive/folders/1JFk4toS85OfSfH-M1GqjfMgPbrrxfpOh?usp=sharing