How to deploy Fast API

FastAPI + Docker + AWS EC2 Deployment Guide

Prerequisites (Local)

1. Create a Dockerfile

Create a Dockerfile in your project root:

FROM python:3.12-slim
WORKDIR /app
COPY requirements.txt .
RUN pip install -r requirements.txt
COPY . .
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

If your project structure follows app/main.py, set the entry point as app.main:app

2. Push to GitHub

git add Dockerfile
git commit -m "Add Dockerfile"
git push origin main

AWS EC2 Setup

⚠️ We were using a provided AWS account, so the EC2 setup process is slightly different from the standard approach. Follow the steps below carefully.

3. Create a Security Group First

• EC2 Console → Left menu Security Groups → Create security group
• Enter name and description
• Select VPC → Click Create
• Wait 5–10 seconds (for automatic tag attachment)

4. Add Inbound Rules

After confirming the tag is attached, edit inbound rules:

Click Save rules

5. Launch an EC2 Instance

• Enter a name (e.g., my_projectname)
• OS: Ubuntu 22.04 LTS
• Instance type: t3.micro
• Key pair: Create new → Download and save the .pem file
• Security group: Select the one you just created
• Click Launch instance

6. Set an Instance Profile

• Select instance → Actions → Security → Modify IAM role
• Choose SafeInstanceProfile-{username} → Save

EC2 Server Configuration

7. Connect to EC2

• Confirm instance status is running
• Click Connect → EC2 Instance Connect tab → Click Connect
• A black terminal window in your browser means success

8. Set Up the Server Environment

sudo apt update && sudo apt upgrade -y
sudo apt install python3-pip python3-venv git -y

9. Install Docker

sudo apt install docker.io -y
sudo systemctl start docker
sudo systemctl enable docker
sudo usermod -aG docker ubuntu

⚠️ After installation, close the terminal and reconnect via EC2 Instance Connect!

After reconnecting, verify Docker is installed:

docker --version

10. Clone the Repository

Use a Personal Access Token instead of your GitHub password

git clone https://[email protected]/teamname/my_projectname.git
cd my_projectname

To generate a token: GitHub → Settings → Developer settings → Personal access tokens → Tokens (classic) → Generate new token → Check repo

11. Build the Docker Image

docker build -t my_projectname .

12. Run the Docker Container

docker run -d --name my_projectname -p 8000:8000 my_projectname

13. Verify It's Running

# Check container status
docker ps

# Check logs
docker logs my_projectname

Verify Access

Open your browser and navigate to:

http://YOUR_EC2_PUBLIC_IP:8000/docs