centos7 安装 mariadb(mysql的一个分支) 的正确命令

[root@VM_177_92_centos ~]# yum install mysql
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
正在解决依赖关系
--> 正在检查事务
---> 软件包 mariadb.x86_64.1.5.5.44-2.el7.centos 将被 安装

[root@VM_177_92_centos ~]# yum -y install mariadb*
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
软件包 1:mariadb-libs-5.5.44-2.el7.centos.x86_64 已安装并且是最新版本
正在解决依赖关系
--> 正在检查事务
---> 软件包 mariadb.x86_64.1.5.5.44-2.el7.centos 将被 安装

[root@VM_177_92_centos ~]# systemctl start mariadb.service
[root@VM_177_92_centos ~]#
[root@VM_177_92_centos ~]# systemctl enable mariadb.service
Created symlink from /etc/systemd/system/multi-user.target.wants/mariadb.service to /usr/lib/systemd/system/mariadb.service.

[root@VM_177_92_centos ~]# mysql
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 2
Server version: 5.5.44-MariaDB MariaDB Server

Copyright (c) 2000, 2015, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]>
MariaDB [(none)]>
MariaDB [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| test               |
+--------------------+
4 rows in set (0.00 sec)

MariaDB [(none)]>