foreman Start错误：Tesing将一个简单的flask应用程序部署到Heroku

Question

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

if __name__ == '__main__':    
    import os 
    port = int(os.environ.get('PORT', 5000)) 
    app.run(host='0.0.0.0', port=port)

错误的堆栈跟踪：

        22:13:45 web.1  | started with pid 11121
        22:13:45 web.1  |  * Running on http://127.0.0.1:5000/
        22:13:45 web.1  | Traceback (most recent call last):
        22:13:45 web.1  |   File "Hunch/Hunch/hunchapp.py", line 49, in <module>
        22:13:45 web.1  |     app.run()
        22:13:45 web.1  |   File "/home/agconti/my_dev/github/Hunch/venv/local/lib/python2.7/site-packages/flask/app.py", line 772, in run
        22:13:45 web.1  |     run_simple(host, port, self, **options)
        22:13:45 web.1  |   File "/home/agconti/my_dev/github/Hunch/venv/local/lib/python2.7/site-packages/werkzeug/serving.py", line 706, in run_simple
        22:13:45 web.1  |     test_socket.bind((hostname, port))
        22:13:45 web.1  |   File "/usr/lib/python2.7/socket.py", line 224, in meth
        22:13:45 web.1  |     return getattr(self._sock,name)(*args)
        22:13:45 web.1  | socket.error: [Errno 98] Address already in use
        22:13:45 web.1  | exited with code 1
        22:13:45 system | sending SIGTERM to all processes

Answer 1

从终点站：

heroku config:add PORT=33507

然后将您的应用程序更改为：

if __name__ == '__main__':
        import os  
        port = int(os.environ.get('PORT', 33507)) 
        app.run(host='0.0.0.0', port=port)

似乎heroku为自己的目的保留了Flask的默认端口。在这里可以找到详细的讨论：将Flask应用程序部署到Heroku。