谷咕云计算

# 一鍵安裝NVIDIA驅動+CUDA 12.1
curl -sL https://raw.githubusercontent.com/DeepSeek-Community/installer/main/init.sh | bash -s -- --cuda 12.1

# 使用Mamba替代conda加速依賴解析
wget "https://github.com/conda-forge/miniforge/releases/latest/download/Mambaforge-$(uname)-$(uname -m).sh"
bash Mambaforge-*.sh -b -p $HOME/mamba
source $HOME/mamba/etc/profile.d/mamba.sh

mamba create -n deepseek python=3.10 -y
mamba activate deepseek
pip install deepseek-sdk torch==2.1.0+cu121 --extra-index-url https://download.pytorch.org/whl/cu121

from deepseek import load_model

# 多執行緒分段載入（加速30%）
model = load_model(
    "deepseek-chat-7b", 
    device_map="auto", 
    load_in_4bit=True,  # 4bit量化壓縮
    max_split_size_mb=128
)

# app/main.py
from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()

class Query(BaseModel):
    text: str
    max_length: int = 512

@app.post("/chat")
async def generate(query: Query):
    return model.generate(query.text, max_length=query.max_length)

# 啟動Gunicorn（4 worker + 執行緒複用）
gunicorn -w 4 -k uvicorn.workers.UvicornWorker --bind 0.0.0.0:8000 app.main:app

# Nginx最佳化配置（/etc/nginx/conf.d/deepseek.conf）
worker_processes auto;
events {
    worker_connections 1024;
    multi_accept on;
}

http {
    proxy_read_timeout 300s;
    client_max_body_size 50M;
    
    server {
        listen 80;
        location / {
            proxy_pass http://127.0.0.1:8000;
            proxy_set_header Host $host;
        }
    }
}

# 使用ab進行壓力測試
ab -n 1000 -c 50 -p query.json -T 'application/json' http://localhost/chat

# 最佳化措施：
# 1. 開啟Gunicorn非同步worker：-k gevent
# 2. 模型啟用批處理：model.enable_batching(max_batch_size=8)

# deepseek-monitor.yml
scrape_configs:
  - job_name: 'deepseek'
    static_configs:
      - targets: ['localhost:8000']
    metrics_path: '/metrics'

alerting:
  rules:
    - alert: HighResponseTime
      expr: rate(http_request_duration_seconds_sum[5m]) > 0.5

# 使用logrotate每日切割日誌
/var/log/deepseek/*.log {
    daily
    rotate 7
    compress
    delaycompress
    missingok
    notifempty
    create 640 root adm
    sharedscripts
    postrotate
        systemctl reload nginx
    endscript
}