Python Flask server as a windows background service using nssm

In this video, we will learn how to run a python Flask server as a windows background service using nssm

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00:00 - Intro
01:34 - About nssm
02:05 - Install nssm
02:43 - system environment variable for nssm
04:18 - Example Flask server
04:55 - Step-1 Create batch file to run server
05:20 - Step-2 Setup nssm to run batch file as windows service
08:48 - Step-2 in action
12:05 - Automatic service startup on system startup
12:20 - Testing the flask application as a windows service
13:35 - Edit flask windows service with nssm GUI
15:15 - Commands to control windows background services
16:04 - Outro

#flask #nssm #background_service #windows_service #server #web #dev #tutorial #learning #beginners #pythonforbeginners #taming_python

[filipbottcher]

Good video! Thats what i needed. Also good explanation, well done!

[PrathapHosahalliGovindaNaik]

Thank you so much for this detailed explanation of each point. This is what I exactly wanted

[subhamthemusicalguy]

awesome work. i was struggling with it. thanks a lot.subscribed

[soumyashreeshinde]

Thank you so much. This was tremendously helpful :)

[elwanmayencourt]

It was exactly what I needed. Thank you, it works perfectly. And very good explanation

[prateekbanerjee]

Thank you so much Sir for this insightful video. I am doing a project where I thought that creating a background process in windows might be helpful but I did not know the execution, which this video assisted me with. It has been really helpful and I hope that I can bring my project to fruition proceeding forward with this idea.

[eduardobolivar]

good video, Can I Use this with fast api? i'm trying but i have a mistake no module found error 'click' but that module is installed

[igqzhms]

Thank you so much and i have a doubt which will work on django, fastapi also?

[shreyasmahajan]

Everything is working well except that I am getting the following error when I start the service :
"' 'python' is not recognized as an internal or external command,
operable program or batch file."

[jevoycharvis]

Hey what if my python flask has env, how do I make the call in the batch file?

[bibekjoshivlogs]

'python' is not recognized as an internal or external command,
operable program or batch file.
in log file

[serranopink]

Excellent video. A question, I'm using 'waitress-serve --port=8081 hello:app' to run my flask server. In a machine with Windows 10, the service works well but in a machine with windows 7, the service donsn't work, the log says: "waitress-serve is not recognized as an internal or external command, executable program or batch file".
Any idea what the problem could be?

[minasalah]

for some reason, my local server will print hello world only if I'm running "run_server.bat" When I close cmd, I can see "my_flask_app" still running in Services but localhost50100 says "This site can’t be reached".
Please help.

[cmfanz]

how do we add timestamps to the log file names via nssm ? Also is there a way to have timestamps for each new set of log statements for each unique run of the service in the log file via nssm without curating it via python?

[arshitvaghasiya]

It's completely working. But I want to run some application whenever I open the URL. So I added "os.system('notepad.exe')" in python code's function. So whenever I run the server manually from vscode and then open the URL in the browser, it will open Notepad in my OS. But whenever I try to do the same by starting the service and then I open the URL, it just keeps loading. And there is no log for that in the log file. It just keeps loading. Any idea on this?

[chnadell]

Great tutorial, thanks for this. One thing missing here is how to run the service with a python virtual environment. I find the naive approach of altering run_server.bat to contain
call & python -m \path\to\app.py

Does work when run directly in cmd, but fails when called by nssm, with a log entry like:
"""
Unable to create process using -m \path\to\app.py'
"""
and no further information. Windows Event Viewer is similarly unhelpful: "0x0: Cannot create the process for package because an error was encountered."