CentOS 7
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Install phpMyAdmin
Install phpMyAdmin to operate MariaDB on web browser from Clients.
[3] Install phpMyAdmin.
# install from EPEL

[[email protected] ~]#
yum --enablerepo=epel -y install phpMyAdmin php-mysql php-mcrypt
[[email protected] ~]#
vi /etc/httpd/conf.d/phpMyAdmin.conf
# line 17, 34: IP address you permit to access

Require ip
[[email protected] ~]#
systemctl restart httpd

[4] Access to 'http://(your hostname or IP address)/phpmyadmin/' with web browser from Clients, then Login with a user in MariaDB on following screen. This example uses root user to proceed.
[5] Just logined. You can operate MariaDB on here.
[6] It's possible to change settings of MariaDB on "http://(your hostname or IP address)/phpmyadmin/setup".