FastAPI Deployment with Docker on CentOS 7

date

Mar 15, 2024

slug

fastapi-deployment-with-docker-on-centos-7

status

Published

type

Short

summary

FastAPI deployment with Docker on CentOS 7, including updating system, installing Docker and Docker Compose, configuring Nginx as a reverse proxy.

tags

DevOps

Firstly, you will need to update your system's default applications to their latest versions:


sudo yum update -y

Next, install the necessary utilities for Docker:


sudo yum install -y yum-utils device-mapper-persistent-data lvm2
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install -y docker-ce
sudo systemctl start docker && sudo systemctl enable docker

You'll also need to install Docker Compose:


sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose

Create a Dockerfile that will specify how your application should be built:


FROM python:3.10

WORKDIR /app

COPY requirements.txt .

RUN pip install -r requirements.txt

COPY . .

CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "80"]

Then, create a docker-compose.yml file to define your services:


version: '3'
services:
  app:
    build: .
    ports:
      - "8081:80"
    volumes:
      - .:/app

After that, install Nginx, which will act as a reverse proxy for your application:


sudo yum install -y epel-release
sudo yum install -y nginx

You'll need to configure Nginx to proxy requests to your FastAPI application. To do this, create a new configuration file in the /etc/nginx/conf.d directory. Use the command vim /etc/nginx/conf.d/yourdomain.com.conf to open the file:


server {
    listen 80;
    server_name yourdomain.com www.yourdomain.com;

    location / {
        proxy_pass http://localhost:8081;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}

Finally, start your Docker services and enable Nginx:


sudo docker-compose up -d

sudo systemctl start nginx
sudo systemctl enable nginx

And that's it!