Deploy Application on AWS with GitHub Action and DockerHub

📝 Outline:

1. What is AWS EC2 and GitHub Actions? 🤔
2. Setting up AWS EC2 Instance 💻
3. Pushing Docker Images to DockerHub 📦
4. Automating CI/CD with GitHub Actions 🔄
5. Deploying Docker Image on AWS EC2 🐳
6. Connecting EC2 with a Database Service (e.g., MySQL) 🗄️
7. Example: Running a Node.js App with a MySQL Database 🎯

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1. What is AWS EC2 and GitHub Actions? 🤔

Amazon EC2 (Elastic Compute Cloud) is a cloud service that provides scalable compute capacity, allowing you to run applications and services in a secure, isolated environment. GitHub Actions is a CI/CD tool that automates software workflows directly in GitHub.

With GitHub Actions, you can automate building, testing, and deploying your application to AWS EC2 after pushing to GitHub.

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2. Setting Up AWS EC2 Instance 💻

To deploy your app on AWS, you first need an EC2 instance:

1. Launch an EC2 Instance:
2. Go to AWS EC2 Console.
3. Choose an Ubuntu server.
4. Select instance type (e.g., t2.micro).
5. Configure security groups (allow HTTP, HTTPS, and SSH).
6. Connect to the Instance via SSH:

   ssh -i "your-key.pem" ubuntu@ec2-your-instance-ip
   

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3. Pushing Docker Images to DockerHub 📦

To deploy a Docker container on EC2, you first need to push your Docker image to DockerHub.

1. Login to DockerHub:

docker login

1. Build Docker Image:

docker build -t yourusername/appname .

1. Push to DockerHub:

   docker push yourusername/appname
   

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4. Automating CI/CD with GitHub Actions 🔄

Set up GitHub Actions to automate building, testing, and pushing Docker images to DockerHub.

1. Create a .github/workflows/ci.yml file:

name: CI Pipeline

on:
  push:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Build and Push Docker image
        uses: docker/build-push-action@v2
        with:
          context: .
          push: true
          tags: yourusername/appname:latest

      - name: Login to DockerHub
        run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin

1. Push to GitHub: When you push code to the main branch, GitHub Actions will build and push the Docker image to DockerHub.

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5. Deploying Docker Image on AWS EC2 🐳

Once the Docker image is available on DockerHub, you can pull and run it on your EC2 instance.

1. Install Docker on EC2:

sudo apt update
sudo apt install docker.io -y
sudo systemctl start docker
sudo systemctl enable docker

1. Pull the Docker Image:

docker pull yourusername/appname:latest

1. Run the Docker Container:

   docker run -d -p 80:3000 yourusername/appname
   

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6. Connecting EC2 with a Database Service 🗄️

For a full deployment, you might want to connect your application to a database, such as MySQL.

1. Create a MySQL Docker Container:

docker run -d \
--name mysql-db \
-e MYSQL_ROOT_PASSWORD=rootpassword \
-e MYSQL_DATABASE=appdb \
-e MYSQL_USER=user \
-e MYSQL_PASSWORD=password \
-p 3306:3306 \
mysql:latest

1. Update Application Configuration: Update your app’s environment variables to point to the MySQL database.

   DATABASE_HOST=mysql-db
   DATABASE_USER=user
   DATABASE_PASSWORD=password
   

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7. Example: Running a Node.js App with MySQL Database 🎯

Here’s how to run a simple Node.js app with MySQL on EC2 using Docker.

Step 1: Create docker-compose.yml:

version: "3"
services:
  app:
    image: yourusername/appname
    ports:
      - "80:3000"
    environment:
      DATABASE_HOST: mysql-db
      DATABASE_USER: user
      DATABASE_PASSWORD: password
    depends_on:
      - mysql-db
  mysql-db:
    image: mysql:latest
    environment:
      MYSQL_ROOT_PASSWORD: rootpassword
      MYSQL_DATABASE: appdb
      MYSQL_USER: user
      MYSQL_PASSWORD: password
    ports:
      - "3306:3306"

Step 2: Deploy the App:

1. SSH into EC2 and run:

   docker-compose up -d
   

Your application should now be live and connected to a MySQL database! 🎉

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🚀 Summary Table:

Step	Action
1	Launch EC2 and connect via SSH
2	Push Docker Image to DockerHub
3	Setup GitHub Actions for CI/CD
4	Pull Docker Image on EC2 and Run
5	Connect App to MySQL Database

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