部署Django站点到Heroku后遇H14错误，dynos缩放提示进程类型不存在

Hey there, let's work through this Heroku deployment issue you're facing with your Django app! Here's a step-by-step breakdown of how to fix the H14 error and the "Couldn't find that process type" message:

First, let's recap the core issues:

• Error H14 means no web dynos are running on Heroku
• The heroku ps:scale web=1 failure points to a problem with your Procfile or project setup

1. Verify Your Procfile Setup #

This is the most common culprit for this error:

• Make sure your Procfile is named exactly Procfile (capital P, no file extension like .txt) and lives in your project root directory (same folder as manage.py). Double-check your project structure to confirm it's in the right spot.
• Your Procfile line is web: gunicorn Django_work.wsgi — confirm the Django_work.wsgi path is correct:
  • Navigate to your project locally and check if wsgi.py is inside a folder named Django_work (same directory as settings.py). Remember, Heroku runs on Linux, so folder/file names are case-sensitive — if your folder is actually named django_work (lowercase), you'll need to update the path to match.

2. Ensure Gunicorn is in Your Requirements #

Heroku needs to know to install Gunicorn, so it must be listed in your requirements.txt:

• Run pip freeze > requirements.txt in your local development environment to generate an updated requirements file
• Make sure gunicorn appears in the list, then commit this file to Git and push the changes to Heroku with git push heroku main (or your default branch name, like master)

3. Redeploy and Retry Scaling #

After fixing the above:

1. Commit all your changes to Git
2. Push to Heroku with git push heroku main
3. Run heroku ps:scale web=1 again — this should work now that your Procfile and dependencies are correctly set up
4. Verify the dynos are running with heroku ps — you should see a web dyno listed

4. Dig Into Full Logs for Clues #

The log snippet you shared only shows the start of the build and database attachment. To get more details, run heroku logs --tail to view real-time logs. Look for errors like:

• ModuleNotFoundError (indicates an incorrect path in your Procfile)
• ImportError (means a dependency is missing from requirements.txt)
• Gunicorn startup failures (which will highlight exactly what's going wrong)

These logs will give you specific info to fix any remaining issues.

内容的提问来源于stack exchange，提问作者Frank Gilmor