Скачать или смотреть How to Fix the Deploy Failed Error on Heroku Postgres

Discover how to resolve the `Deploy Failed` issue on Heroku Postgres with a simple Procfile edit and other helpful tips.
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This video is based on the question https://stackoverflow.com/q/69891690/ asked by the user 'Gabriel Herndon' ( https://stackoverflow.com/u/10718094/ ) and on the answer https://stackoverflow.com/a/72782698/ provided by the user 'Muhammadalive' ( https://stackoverflow.com/u/16780764/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Solving the Heroku Postgres Deployment Problem: Build Succeeded, Release Completed, But Deploy Failed

Deploying applications on Heroku can sometimes feel like an uphill battle, especially when you're faced with deployment errors that seem insurmountable. One common scenario is when you see messages stating, "Build Succeeded" and "Release Completed," yet your deployment still fails. Do you want to know why this happens and how to fix it? Read on.

Identifying the Problem

When working with a Python application on Heroku that integrates with Postgres, encountering an error where the deployment fails can be quite frustrating. Here’s a simplified example of such a scenario:

The application builds successfully.

The virtual environment is created without any explicit errors.

However, it ultimately exits with a status 1, and the app fails to deploy.

The error originates from the Procfile, which dictates how your application runs on Heroku.

Let’s break this down further.

Background and Error Summary

A user encountered issues after scrapping an old Postgres database and trying to set up a new one. Upon building the app, everything seemed correct until it came to the deployment phase where it failed due to an issue in the Procfile.

The user’s logs included:

Successful build messages.

Status 1 exit error during the release process.

The Solution: Editing the Procfile

Fortunately, the solution is simpler than it might appear. The key to fixing this issue lies in editing your Procfile. Here’s how to do it:

Steps to Follow

Open Your Procfile: This file is essential as it instructs Heroku on how to run your application.

Remove the Release Command: Delete the line that says:

[[See Video to Reveal this Text or Code Snippet]]

This line is likely causing the failure. By removing it, you allow Heroku to skip that command during the deployment process.

Your Procfile should only include:

[[See Video to Reveal this Text or Code Snippet]]

(Optional) Upgrade Pipenv through Heroku CLI: You might also want to ensure you have the latest version of Pipenv. You can do this through the Heroku CLI.

Additional Tips

Using Virtualenv: If issues persist, try using virtualenv instead of pipenv. This could provide a more straightforward environment management experience.

Check Dependencies: Make sure all necessary packages are included in your Pipfile. Incomplete or conflicting dependencies can also lead to deployment failures.

Testing Locally: Before deploying, test your application locally to ensure it runs smoothly. Use the same versions of Python and libraries as specified in your Pipfile.lock.

Conclusion

Deployment issues can be a source of significant stress for developers, especially when working with cloud platforms like Heroku. However, you now have clear steps to resolve the "Deploy Failed" issue related to your Heroku Postgres setup. By simply modifying your Procfile and ensuring everything is in order, you can save time and get your application running successfully.

Good luck with your deployment, and happy coding!