Dify 自行架設 - Claude 3.5 建議

By 蓉爸 RungBa
Created: 2025-01-26
Revised: 2025-01-26

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繼使用 LXD/LXC 完成 n8n 的自架後，接下來就再來試試 Dify 的自架！

一樣，我不想用 Docker 方式來架設，但花了一些時間，Google 到的都是使用 Docker 的安裝方式，突然想到我該來問問 Claude 的，於是就有了下方的成果，待我試試 Claude 3.5 給的 installation guide …

不想用 Docker 方式架設的原因：
因 Docker 安裝後，整個 container image 會非常肥大，比一般不用Docker 方式建置的 image 大了 10 ~ 20 倍，而且也不利於備份，甚至發現備份時，無法成功匯出 container image，目前不確定是否是 LXD 系統本身還存在這個問題？！

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Dify Installation Guide for Ubuntu (Non-Docker)

Prerequisites

1. Ubuntu 20.04 or newer
2. Python 3.10 or newer
3. Node.js 16+ and npm
4. PostgreSQL 14+
5. Redis

System Dependencies Installation

First, install required system packages:

sudo apt update
sudo apt install -y python3-pip python3-venv postgresql postgresql-contrib redis-server nodejs npm git

PostgreSQL Setup

1. Start PostgreSQL service:

sudo systemctl start postgresql
sudo systemctl enable postgresql

2. Create database and user:

sudo -u postgres psql
CREATE DATABASE dify;
CREATE USER dify WITH PASSWORD 'your_password';
GRANT ALL PRIVILEGES ON DATABASE dify TO dify;
\q

Redis Setup

1. Start Redis service:

sudo systemctl start redis-server
sudo systemctl enable redis-server

Dify Installation

1. Clone the repository:

git clone https://github.com/langgenius/dify.git
cd dify

2. Set up Python virtual environment:

python3 -m venv venv
source venv/bin/activate

3. Install backend dependencies:

cd api
pip install -r requirements.txt

4. Configure environment variables:

cp .env.example .env

Edit .env file with your database and Redis configurations:

# Database
DB_USERNAME=dify
DB_PASSWORD=your_password
DB_HOST=localhost
DB_PORT=5432
DB_DATABASE=dify

# Redis
REDIS_HOST=localhost
REDIS_PORT=6379
REDIS_USERNAME=
REDIS_PASSWORD=
REDIS_DB=0

5. Install and build frontend:

cd ../web
npm install
npm run build

Initialize Database

From the api directory:

flask db upgrade
flask init

Running the Application

1. Start the backend server:

cd api
flask run --host 0.0.0.0 --port 5001

2. Start the frontend development server:

cd web
npm run dev

Access the Application

Access the web interface at: http://localhost:3000

Common Issues and Troubleshooting

1. If you encounter PostgreSQL authentication issues:

   • Check pg_hba.conf configuration
   • Verify database user permissions

2. If Redis connection fails:

   • Verify Redis is running: sudo systemctl status redis-server
   • Check Redis configuration in /etc/redis/redis.conf

3. Python package conflicts:

   • Ensure you're using Python 3.10+
   • Try recreating the virtual environment

4. Port conflicts:

   • Check if ports 5001 and 3000 are available
   • Use different ports by modifying the start commands

Security Considerations

1. Change default passwords
2. Configure proper firewall rules
3. Set up SSL/TLS for production use
4. Regularly update dependencies

Production Deployment

For production deployment, additional steps are recommended:

1. Use a production-grade WSGI server (e.g., Gunicorn)
2. Set up Nginx as a reverse proxy
3. Configure proper security measures
4. Set up SSL certificates
5. Configure proper logging