How to fix "Hey, Python developers! Your app service is up and running. Time to take the next step and deploy your code." After successful deployment in Azure

Question

I successfullu deployed my Fastapi app in Azure.. But I get the above message intead of my API page

Answer 1

Hello @Mahin M

Here are a few things you can try to resolve your issue:

• Make sure your app code is actually deployed to App Service. Go to the Kudu console (https://<your-app-name>.scm.azurewebsites.net) and check if your code is in the site/wwwroot folder.
• Check the web.config file in wwwroot. Make sure it is configured to point to your FastAPI's main module and WSGI app object. For example:

<configuration>  
  <appSettings>  
    <add key="PYTHONPATH" value="." />  
    <add key="WSGI_HANDLER" value="app.main:app" />  
    <add key="WSGI_LOG" value="D:\home\LogFiles\wfastcgi.log" />  
  </appSettings>  
</configuration>  

• Verify your main FastAPI file (e.g. main.py) has the if __name__ == "__main__": block with uvicorn.run() to start the server. This is required for Azure App Service.
• Check the Azure App Service logs in LogFiles folder for any errors.
• Try restarting the App Service after deploying code changes.
• Make sure the FastAPI app is listening on port defined in the PORT environment variable, not a hardcoded port.