phpMyAdmin Installation and configuration on ubuntu 22.04 error solved using following steps.

What is MySQL ?

MySQL is an open source relational database management system. WordPress content management system (CMS), that helps you store all your blog posts, users, plugin information, etc. It stores that information in separate “tables” and connects it with “keys”, which is why it’s relational.

Linux, Apache, MySQL LAMP stack is a set of open-source software used for web application envelopment. For web application to work, it has to include an operating system, a web server, a database, and a programming language. Each set of software is vital for creating a database-driven and dynamic website.

So during the setup and installation of LAMP we also need to configure mysql data base to store website application data.

If you are facing above mentioned error “Failed! Error: SET PASSWORD has no significance for user ‘root’@’localhost’ authentication data MySQL server Error.” So I hope this may help you to resolve the isseue.

try to run this ALTER Query to change the authentication parameters.

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password by 'yourpassword';

Now you will be able to change the password and login with new password.

#mysql_secure_installation

The above shell script available on Unix systems, and enables you to secure the MySQL installation by enabling you to set a password for root accounts.

Now user has to login on change the authentication parameters to do so just run this command first.

sudo mysql