Скачать или смотреть Solving the pgAdmin4 Login Issue with PostgreSQL

Struggling to log in to `pgAdmin4` with your `PostgreSQL` credentials? Discover the solution to the "Email/Username is not valid" error and regain access to your database management tool.
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This video is based on the question https://stackoverflow.com/q/69975060/ asked by the user 'Nima Masalegooha' ( https://stackoverflow.com/u/12328818/ ) and on the answer https://stackoverflow.com/a/69983648/ provided by the user 'Aditya Toshniwal' ( https://stackoverflow.com/u/12729474/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Resolving the pgAdmin4 Login Issue with PostgreSQL

If you've recently installed PostgreSQL and pgAdmin4 on your Ubuntu Server 20 LTS, you might be facing a frustrating login problem. Specifically, you may encounter a message that states "Email/Username is not valid" when attempting to log in. This can be quite perplexing, especially if you've verified your login credentials using the command line interface (psql) without any issues. In this guide, we'll break down the problem and provide a simple solution to get you back on track.

Understanding the Problem

When you set up pgAdmin4, it requires not just your PostgreSQL database credentials but also the creation of an admin account for the web interface. Here’s a breakdown of the situation:

You have successfully installed PostgreSQL and configured pg_hba.conf for local access.

You can log in using psql -U postgres -W, confirming that the database server is running fine.

However, when trying to log in to pgAdmin4, you receive an error about your email or username being invalid.

This confusion arises because the login process for pgAdmin4 is distinct from that of the PostgreSQL server. Let’s go through the steps to remedy this issue.

Solution Steps

1. Setting Up pgAdmin4 Correctly

When you first set up pgAdmin4, it's imperative that you complete the configuration by creating an administrative user account. If you encountered issues or skipped this step, you wouldn't have the necessary credentials to log in via the web interface.

2. Recovering or Resetting the Admin Account

If you can't remember the email or password associated with the pgAdmin4 setup, there’s a straightforward fix:

Locate the Database File: You’ll need to find the pgadmin4.db file, which stores the accounts and settings for pgAdmin4. This file is usually located in your home directory under /.pgadmin/.

Delete the File: If you have access to the terminal, you can delete the pgadmin4.db file. Here’s the command you can use:

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

Restart pgAdmin4: After deleting the file, restart pgAdmin4. The next time you access the web interface, you’ll be prompted to set up a new admin user, allowing you to create a new email and password.

3. Log In to pgAdmin4

Once you've reset your admin configuration:

Launch pgAdmin4 in your browser.

You'll be welcomed with the setup screen where you can create your new admin user account.

Make sure to choose a valid email and a secure password.

Summary

The login issue you faced is common among new users of pgAdmin4 who overlook the distinction between PostgreSQL credentials and web admin credentials. By following the outlined steps to reset your admin account, you can regain access and effectively manage your databases through the user-friendly web interface of pgAdmin4. Remember: if you encounter further issues, consider revisiting your installation steps or checking for updates in your configuration files.

With this guide, you're now equipped to tackle the pgAdmin4 login issue and simplify your database management tasks. Happy coding!