问题
I do as the examples: http://flask.pocoo.org/docs/quickstart/, and I can run it well on my own machine after "foreman start", however when I deploy it on heroku, I got R10 timeout error.
I wrote the Procfileas :
web: python flaskr.py
and in order to run the "git push heroku master" command, I delete the "disreibute==0.6.24" sentence because if not, I would get an error as follows:
Traceback (most recent call last):
File "<string>", line 1, in <module>
NameError: name 'install' is not defined
So I don't know whether it is the Procfile or the requirements.txt file is wrong or something else is wrong. I almost read all articles I have found but the problem is not solved yet.
Besides, the example used SQLite3 database, I don't know whether it has something to do with this..
In the last, I will list the logs here:
at=error code=H20 desc="App boot timeout" method=GET path=/ host=tranquil-tor-4127.herokuapp.com request_id=8a088587-bee9-40e9-a686-0555843c191b fwd="8.35.201.53" dyno= connect= service= status=503 bytes=
Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch
Stopping process with SIGKILL
Process exited with status 137
at=error code=H10 desc="App crashed" method=GET path=/ host=tranquil-tor-4127.herokuapp.com request_id=59ccb901-e988-430d-93e8-f83a8930e60b fwd="8.35.201.50" dyno= connect= service= status=503 bytes=
at=error code=H10 desc="App crashed" method=GET path=/ host=tranquil-tor-4127.herokuapp.com request_id=7b76850f-7c25-481f-8216-542d9baaa769 fwd="8.35.201.51" dyno= connect= service= status=503 bytes=
Slug compilation started
State changed from crashed to starting
at=error code=H10 desc="App crashed" method=GET path=/ host=tranquil-tor-4127.herokuapp.com request_id=5601bbce-b00c-4927-8d9c-ac534745859d fwd="8.35.201.52" dyno= connect= service= status=503 bytes=
I noticed that slug compilation can finish normally and then R10 error follows.
来源：https://stackoverflow.com/questions/21964520/python-heroku-error-h20-app-boot-timeout-r10-boot-timeout