Centos yum install MySQL error No package mysql-server available.

This is because most of the mysql-* resource names are renamed by mariadb-*

So replace

Yum Install Mariadb-server

You can do it.

ps[from the internet]

MARIADB is not just a replacement for MySQL, its main purpose is to innovate and improve MySQL technology.

After the father of MySQL Widenius left Sun, he felt that relying on sun/oracle to develop MySQL is very unreliable, so decided to open another branch, the name of this branch is called MARIADB.
MARIADB is compatible with MySQL in most respects, and for developers, it almost doesn't feel any different. Currently MARIADB is the fastest-growing MySQL branch version, and the new version has been released faster than the Oracle's official MySQL version.

Centos yum install MySQL error No package mysql-server available.