centos8 mariadb yum源
[mariadb] name = MariaDB baseurl = http://yum.mariadb.org/10.4/centos8-amd64 module_hotfixes=1 gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB gpgcheck=1
[mariadb] name = MariaDB baseurl = https://mirrors.ustc.edu.cn/mariadb/yum/10.4/centos8-amd64/ gpgkey=https://mirrors.ustc.edu.cn/mariadb/yum/RPM-GPG-KEY-MariaDB gpgcheck=1