如何在VPS服务器上部署GPT模型？

如何在VPS上部署GPT模型？从零开始搭建个人AI助手的完整指南

# 更新系统包
sudo apt update && sudo apt upgrade -y
安装Python和pip
sudo apt install python3 python3-pip -y
安装Git用于代码管理
sudo apt install git -y
创建项目目录
mkdir gpt-deployment && cd gpt-deployment

# 安装virtualenv
pip3 install virtualenv
创建虚拟环境
virtualenv venv
source venv/bin/activate
安装核心依赖
pip install openai
pip install flask
pip install requests
pip install torch torchvision torchaudio

# app.py
from flask import Flask, request, jsonify
import openai
import os
app = Flask(name)
配置OpenAI API密钥
openai.apikey = os.getenv('OPENAIAPIKEY')
@app.route('/chat', methods=['POST'])
def chatcompletion():
    data = request.json
    prompt = data.get('prompt', '')
    
    try:
        response = openai.ChatCompletion.create(
            model="gpt-3.5-turbo",
            messages=[
                {"role": "user", "content": prompt}
            ]
        )
        return jsonify({
            "response": response.choices.message.content,
            "usage": response.usage
        })
    except Exception as e:
        return jsonify({"error": str(e)}), 500
if name == 'main':
    app.run(host='0.0.0.0', port=5000, debug=False)

# 设置环境变量
echo 'export OPENAIAPIKEY="your-api-key-here"' >> ~/.bashrc
source ~/.bashrc
创建启动脚本 start.sh
echo '#!/bin/bash
source venv/bin/activate
python app.py' > start.sh
chmod +x start.sh

# 安装Nginx
sudo apt install nginx -y
创建Nginx配置文件
sudo nano /etc/nginx/sites-available/gpt-app

server {
    listen 80;
    servername your-domain.com;
    
    location / {
        proxypass http://127.0.0.1:5000;
        proxysetheader Host $host;
        proxysetheader X-Real-IP $remoteaddr;
    }
}

常见问题及解决方案

步骤六：安全配置和优化

# 启用防火墙
sudo ufw enable
开放必要端口
sudo ufw allow 22    # SSH
sudo ufw allow 80    # HTTP
sudo ufw allow 443   # HTTPS
设置系统交换空间（可选）
sudo fallocate -l 2G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile

步骤七：监控和维护

# 创建systemd服务文件
sudo nano /etc/systemd/system/gpt-service.service

[Unit]
Description=GPT API Service
After=network.target
[Service]
Type=simple
User=ubuntu
WorkingDirectory=/home/ubuntu/gpt-deployment
ExecStart=/home/ubuntu/gpt-deployment/start.sh
Restart=always
RestartSec=10
[Install]
WantedBy=multi-user.target