[database] mariadb 최신 버젼 설치하기

1. vim /etc/yum.repos.d/MariaDB.repo

   [mariadb]
   name = MariaDB
   baseurl = http://yum.mariadb.org/10.4/centos7-amd64
   gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
   gpgcheck=1
   

2. dnf install MariaDB

3. systemctl start mariadb