https://github.com/uj5ghare/flask-twotier-app
Two tier application with Python:3.9-slim & mysql:5.7
https://github.com/uj5ghare/flask-twotier-app
docker docker-compose flask mysql
Last synced: about 2 months ago
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Two tier application with Python:3.9-slim & mysql:5.7
- Host: GitHub
- URL: https://github.com/uj5ghare/flask-twotier-app
- Owner: Uj5Ghare
- Created: 2023-11-17T13:31:45.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2024-02-28T15:35:25.000Z (over 2 years ago)
- Last Synced: 2025-02-14T11:22:23.672Z (over 1 year ago)
- Topics: docker, docker-compose, flask, mysql
- Language: HTML
- Homepage:
- Size: 11.7 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Flask App with MySQL Docker Setup
This is a simple Flask app that interacts with a MySQL database. The app allows users to submit messages, which are then stored in the database and displayed on the frontend.
## Prerequisites
Before you begin, make sure you have the following installed:
- Docker
- Git (optional, for cloning the repository)
## Setup
1. Clone this repository (if you haven't already):
```bash
git clone https://github.com/your-username/your-repo-name.git
```
2. Navigate to the project directory:
```bash
cd your-repo-name
```
3. Create a `.env` file in the project directory to store your MySQL environment variables:
```bash
touch .env
```
4. Open the `.env` file and add your MySQL configuration:
```
MYSQL_HOST=mysql
MYSQL_USER=your_username
MYSQL_PASSWORD=your_password
MYSQL_DB=your_database
```
## Usage
1. Start the containers using Docker Compose:
```bash
docker-compose up --build
```
2. Access the Flask app in your web browser:
- Frontend: http://localhost
- Backend: http://localhost:5000
3. Create the `messages` table in your MySQL database:
- Use a MySQL client or tool (e.g., phpMyAdmin) to execute the following SQL commands:
```sql
CREATE TABLE messages (
id INT AUTO_INCREMENT PRIMARY KEY,
message TEXT
);
```
4. Interact with the app:
- Visit http://localhost to see the frontend. You can submit new messages using the form.
- Visit http://localhost:5000/insert_sql to insert a message directly into the `messages` table via an SQL query.
## Cleaning Up
To stop and remove the Docker containers, press `Ctrl+C` in the terminal where the containers are running, or use the following command:
```bash
docker-compose down
```
## To run this two-tier application using without docker-compose
- First create a docker image from Dockerfile
```bash
docker build -t flask .
```
- Now, make sure that you have created a network using following command
```bash
docker network create net
```
- Attach both the containers in the same network, so that they can communicate with each other
i) MySQL container
```bash
docker run -d --name mysql --net net -e MYSQL_ROOT_PASSWORD="admin" -e MYSQL_DATABASE="db" -v ./message.sql:/docker-entrypoint-initdb.d/message.sql -p 3306:3306 --rm mysql:5.7
```
ii) Backend container
```bash
docker run -d --name flask --net net -e MYSQL_DB="db" -e MYSQL_USER="root" -e MYSQL_HOST="mysql" -e MYSQL_PASSWORD="admin" -p 5000:5000 flask:latest
```
## Notes
- Make sure to replace placeholders (e.g., `your_username`, `your_password`, `your_database`) with your actual MySQL configuration.
- This is a basic setup for demonstration purposes. In a production environment, you should follow best practices for security and performance.
- Be cautious when executing SQL queries directly. Validate and sanitize user inputs to prevent vulnerabilities like SQL injection.
- If you encounter issues, check Docker logs and error messages for troubleshooting.
```