nginx + uwsgi + systemd 部署 flask

Flask 常用部署方式

• uWSGI + Nginx（最常用）

• Gunicorn + Nginx

• gevent.pywsgi + Nginx

  使用gevent.pywsgi的完整示例：

  python
  from gevent import pywsgi
  from your_app import app

  server = pywsgi.WSGIServer(('0.0.0.0', 5000), app)
  print("Server running on port 5000...")
  server.serve_forever()

导出第三方模块

pip freeze > requirements.txt

创建python虚拟环境

# 安装虚拟环境的第三方包 virtualenv
pip3 install virtualenv
 
# 创建虚拟环境（虚拟环境一般放在项目根目录下）
virtualenv venv
 
# 激活虚拟环境
source venv/bin/activate
 
# 退出虚拟环境
deactivate

下载三方模块

在虚拟环境中导入requirements中的第三方模块

pip install -r requirements.txt

导入数据库

新建 文件 wsgi.py

# wsgi.py
from app import app  # 从应用模块导入 app 实例

if __name__ == "__main__":
    app.run()

创建uwsgi.ini

[uwsgi]
module = wsgi
callable = app
master = true
processes = 2
threads = 100
plugin = python3
socket = 0.0.0.0:8002

# 或者使用Unix socket方式（二选一）
; socket = /myflaskapp/uwsgi.sock
; chmod-socket = 660
; vacuum = true


# Python虚拟环境

virtualenv = /home/ubuntu/zhiliao_oa/venv

# 日志文件
logto = /home/ubuntu/zhiliao_oa/logs/error.log
buffer-size = 65535
die-on-term = true

创建 /etc/systemd/system/flaskoa.service

[Unit]
Description=uWSGI instance to serve your Flask app
After=network.target

[Service]
User=www-data
Group=www-data
WorkingDirectory=/home/ubuntu/zhiliao_oa
Environment="PATH=/home/ubuntu/zhiliao_oat/venv/bin"
ExecStart=/usr/bin/uwsgi --ini =/home/ubuntu/zhiliao_oa/wsgi.ini

[Install]
WantedBy=multi-user.target

配置nginx

# nginx配置
 
server {
    listen   80;
    server_name flask.larance.xyz;
    location / {
        uwsgi_pass   127.0.0.1:8002;  # uwsgi运行的端口
        include uwsgi_params;
    }
    location /static{
      alias  /home/ubuntu/zhiliao_oa/static;  # 你收集的静态文件的位置
    }
}