Скачать или смотреть Solving the permission denied for schema public Error in Postgres 15 for Django Migrations

Learn how to resolve the `InsufficientPrivilege` error when running Django migrations on Postgres 15 by correctly granting permissions to the appropriate database.
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This video is based on the question https://stackoverflow.com/q/78163591/ asked by the user 'run_the_race' ( https://stackoverflow.com/u/5506400/ ) and on the answer https://stackoverflow.com/a/78163657/ provided by the user 'Ianis' ( https://stackoverflow.com/u/23590582/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Solving the permission denied for schema public Error in Postgres 15 for Django Migrations

If you’re using Postgres 15 in combination with Django and have been experiencing issues where migrations won’t run due to permission errors, you’re not alone. Many users transitioning from previous versions, such as Postgres 12, are finding that their previously functioning code is now running into roadblocks, specifically the InsufficientPrivilege error when trying to create tables in the public schema. In this guide, we’ll explore the underlying problem and guide you through the steps necessary to fix the issue.

Understanding the Problem

The error you are encountering usually looks something like this:

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

What’s Going Wrong?

The main issue lies in where you are granting permissions. When you execute the command to grant privileges:

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

You might assume that the user has been granted necessary permissions on the database you are trying to work with. However, if you run this command while connected to the wrong database (like postgres instead of your intended database my_db), then the permissions won’t carry over. This is a critical distinction, and understanding it will help ensure you can correctly manage user permissions in your databases.

Steps to Resolve the Issue

To grant your Django user (django) the appropriate permissions on the my_db database, follow these organized steps:

Step 1: Identify the Database Owner

Connect to your Postgres database and run the command:

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

This will list all databases along with their owners and access privileges.

Step 2: Log In as the Database Owner

Use the identified owner account or another account that has the needed permissions.

You might use a command like the following:

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

Step 3: Connect to the Correct Database

Make sure to connect specifically to your my_db database using:

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

Step 4: Grant Permissions

Once connected to my_db, run the following command again:

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

Step 5: Verify Permissions

To ensure that the permissions have been appropriately granted, you can run:

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

Check to see if the django user now has correct access privileges.

Additional Considerations

Ownership: If the django user is going to be the primary user of this database, consider setting them as the owner of the my_db database.

Role Inheritance: When working with roles in Postgres, be mindful about privilege inheritance and how it operates in your specific setup.

By following these structured steps, you should be able to resolve the errors you're experiencing and allow your Django application to run migrations smoothly in the Postgres 15 environment. Troubleshooting these permission issues not only helps your project move forward but also solidifies your understanding of PostgreSQL's permission system, making you a more proficient developer.

If you encounter further complications or have any questions, feel free to reach out for help!