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Ubuntu上搭建uWSGI+flask环境

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1.搭建环境

  • 创建python虚拟号环境
python -m venv venv
  • 激活虚拟环境
source venv/bin/activate

(如果需要退出虚拟环境,执行:deactivate)

  • 安装flask、uwsgi
pip install uwsgi flask

2. 通过原生方式启动flask

  • 创建一个应用vim ~/myporject/app.py
from flask import Flask, jsonify

app = Flask(__name__)

@app.route('/hello')
def hello():
    return jsonify({'message': 'Hello, World!'})

if __name__ == '__main__':
    app.run(host='0.0.0.0',port=5000)
  • 运行测试 python app.py
 * Serving Flask app 'app'
 * Debug mode: off
WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
 * Running on all addresses (0.0.0.0)
 * Running on http://127.0.0.1:5000
 * Running on http://192.168.0.129:5000
Press CTRL+C to quit
127.0.0.1 - - [25/May/2023 19:24:43] "GET / HTTP/1.1" 404 -
127.0.0.1 - - [25/May/2023 19:24:47] "GET /hello HTTP/1.1" 200 -

正常情况下会在http://127.0.0.1:5000/hello中看到{"message":"Hello, World!"}
如果是要在外网访问则需要修改服务商的安全组,在入向规则中添加5000端口

3.通过uWSGI启动flask

  1. 创建一个文件夹mkdir uwsgi
  2. 创建uWsgi配置文件vim uwsgi.ini,并填充以下内容:
[uwsgi]
chdir=~/myporject
http=0.0.0.0:5000
stats=%(chdir)/uwsgi/uwsgi.status
pidfile=%(chdir)/uwsgi/uwsgi.pid
wsgi-file=%(chdir)/app.py
callable=app
processes=2
threads=2
buffer-size=65536
  • 通过uWSGI启动
uwsgi --ini uwsgi.ini

服务启动后会在uwsgi文件夹中生成.pid和.status文件,其中.pid里记录了uWSGI服务的进程id,所以停止服务的指令为:

uwsgi --stop uwsgi/uwsgi.pid
  • 查看uWSGI运行状态
uwsgi --connect-and-read  uwsgi/uwsgi.status

4.为uWSGI添加开机自启动

  • 创建启动、停止脚本

vim start.sh

#!/bin/sh
~/myproject/venv/bin/uwsgi --ini ~/myproject/uwsgi.ini

vim stop.sh

#!/bin/sh
~/myproject/venv/bin/uwsgi --stop ~/myproject/uwsgi/uwsgi.pid

chmod a+x start.sh stop.sh (增加执行权限)

  • 配置启动服务(文件名uwsgi对应的就是后续操作开启、结束服务的名字,可以自定义)
    vim /etc/systemd/system/uwsgi.service
[Unit]
Description=uWSGI instance
After=network.target remote-fs.target nss-lookup.target

[Service]
ExecStart=~/myproject/run.sh
ExecStop=~/myproject/stop.sh

[Install]
WantedBy=multi-user.target

如果发现有环境变量取不到,可以添加一个环境变量文件

[Service]
EnvironmentFile=path to your env file
...

env文件格式:

key1=value1
key2=value2
  • 启动服务,并开启自启动
sudo systemctl start uwsgi
sudo systemctl enable uwsgi

另一种启动服务方式

service uwsig start

每次修改启动服务的配置文件后需要执行systemctl daemon-reload让其生效

  • 其他常用指令:

停止开机自启动 : systemctl disable uwsgi
启动 uwsgi 服务 : systemctl start uwsgi
停止 uwsgi 服务 : systemctl stop uwsgi
重启 uwsgi 服务 : systemctl restart nginx
查看服务当前状态 : systemctl status uwsgi
查看所有已启动的服务 : systemctl list-units --type=service

5.其他

服务端如何配置Clash


https://www.xamrdz.com/backend/3rs1935954.html

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