该测试系统为centos7.x

curl -sS https://downloads.mariadb.com/MariaDB/mariadb_repo_setup | sudo bash
sudo yum install MariaDB-server MariaDB-devel galera MariaDB-client MariaDB-shared MariaDB-backup MariaDB-common
systemctl start mariadb
systemctl enable mariadb
mysql_secure_installation  ## 初始化数据库