官方
https://mariadb.com/kb/en/mariadb/installing-mariadb-deb-files/

  • New Key
  • Add MariaDB to your sources.list 

sudo apt-get install software-properties-common 
sudo apt-key adv –recv-keys –keyserver hkp://keyserver.ubuntu.com:80 0xF1656F24C74CD1D8
sudo add-apt-repository ‘deb http://ftp.osuosl.org/pub/mariadb/repo/10.0/ubuntu trusty main’

sudo apt-get update
sudo apt-get install mariadb-server

.begin install maybe have question about other mariadb toolkit install
If Y -> have one question for root password
If N -> use  mysql_secure_installtion  for secure

Finish install mariadb.

modify my.cnf    /etc/mysql  ( find / -name my.cnf )

[mysqld]
1、port  maybe change  3306 -> 6033
2、listen maybe 127.0.0.1 -> 0.0.0.0

login mysql

1、root login anywhere %, full rights

GRANT ALL PRIVILEGES ON *.* TO ‘root’@'%' IDENTIFIED BY ‘put password’ with grant option;

2、create other account  login anywhere %, full rights

GRANT ALL PRIVILEGES ON *.* TO ‘otheraccount’@'%' IDENTIFIED BY ‘put password’ with grant option;

3、remove  Revoke  (權限)

REVOKE ALL PRIVILEGES, GRANT OPTION FROM ‘root’@'%';

4、Remove/Delete the user

DROP USER ‘root’@'%';

5、show user and grant 顯示
SELECT User,Host FROM mysql.user;

SHOW GRANTS FOR ‘root’@‘localhost’;
SHOW GRANTS FOR ‘root’@'%';

http://idroot.net/linux/install-mariadb-ubuntu-16-04/