CODEWITHSUNDEEP
pythonazureflaskazure-web-app-service
Hafiz Temuri
Hafiz Temuri

Reputation: 4142

Azure Default Logs

I am new to Azure and I deployed a flask application to Azure. Just curious where Azure save the logs if I print (console log) something in the application. Just curious if there is any log folder by default or do I have to setup one of my own? If so, how can I create one?

Its creating the log file but it is not writing anything to it,

import sys

app = Flask(__name__)

sys.stdout = open('D:/home/LogFiles/app.log', 'w')

print("I am here")

@app.route('/')
def hello_world():
    return 'Hello World!'


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

Upvotes: 2

Views: 2391

Answers (1)

Jay Gong
Jay Gong

Reputation: 23792

You could find application logs on Kudu with 2 ways:

1.On the portal:

enter image description here

2.Just access URL directly in the browser:

https://<Your app name>.scm.azurewebsites.net/

Then please check log files in the path :D:\home\LogFiles>

enter image description here

In addition , you could turn on the button to collect logs or store logs in blob container on the portal.

enter image description here

Hope it helps you.

Update Answer :

After some testing, I found that Flask Azure app only records the fastcgi level logs on KUDU, although I've turned on the diagnostics log switch which I metioned above. I found C# azure app can record the console log after the diagnostics log configuration, but the azure Python app does not.

As I know , everything you output using print goes to the standard output(by default).

So , I recommand a workaround to deal with this is to redirect the standard output of your scripts to some files on KUDU:

>>> import sys
>>> sys.stdout = open('<Absolute path on Kudu(such as D:\home\LogFiles\app.log)>', 'w')
>>> print('Hello World!')

You can configure the above code as a global variable.

Upvotes: 3

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