Why Can't My User Access the Database Although They Have Full Permissions in MariaDB?

To troubleshoot this error, you can:

• Check the mysql.user table to verify user details and granted privileges.
• Use the SHOW GRANTS statement to see the specific permissions granted to the user.
• Try connecting directly with the mysql command-line tool.

Example Codes for Troubleshooting MariaDB Access Denial

Check User and Host:

-- This query shows username and host combinations in the mysql.user table
SELECT User, Host FROM mysql.user;

Verify User Privileges:

-- Replace 'username' with your actual username
SHOW GRANTS FOR 'username'@'localhost';

This will display all the privileges granted to the user for the specified host (localhost in this case).

Check MariaDB Connection (command line):

mysql -u username -p password databasename

Replace the following:

• username: Your MariaDB username
• password: Your MariaDB password
• databasename: The specific database you're trying to access

If the connection is successful, you'll see the MariaDB prompt. Otherwise, you'll get an error message indicating the specific issue (e.g., access denied, wrong password).

Additional Tips:

• Make sure you're using the correct password for the user.
• Double-check for typos in username, host, and database name.
• If you're unsure about the user privileges, consult your database administrator.