一、准备工作

https://mariadb.org/mariadb/all-releases/

选择想要安装的版本，再选择MariaDB Respositories，复制yum源信息

二、先确认当前环境是否安装过数据库 

[root@localhost ~]# rpm -q mariadb-server
package mariadb-server is not installed

三、重新配置yum仓库

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

　　将复制的yum源信息填写到MariaDB.repo

[mariadb]
name = MariaDB
baseurl = https://tw1.mirror.blendbyte.net/mariadb/yum/10.6/centos7-amd64
gpgkey=https://tw1.mirror.blendbyte.net/mariadb/yum/RPM-GPG-KEY-MariaDB
gpgcheck=1

　　查看已安装好的yum源仓库

[root@localhost yum.repos.d]# yum repolist
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
base                                                                                                                       | 3.6 kB  00:00:00     
epel                                                                                                                       | 4.7 kB  00:00:00     
extras                                                                                                                     | 2.9 kB  00:00:00     
mariadb                                                                                                                    | 3.4 kB  00:00:00     
updates                                                                                                                    | 2.9 kB  00:00:00     
(1/2): mariadb/updateinfo                                                                                                  | 5.4 kB  00:00:01     
(2/2): mariadb/primary_db                                                                                                  |  66 kB  00:00:01     
repo id                                                repo name                                                                            status
base/7/x86_64                                          CentOS-7                                                                             10,072
epel/x86_64                                            Extra Packages for Enterprise Linux 7 - x86_64                                       13,674
extras/7/x86_64                                        CentOS-7                                                                                500
mariadb                                                MariaDB                                                                                  93
updates/7/x86_64                                       CentOS-7                                                                              2,943
repolist: 27,282

四、yum安装mariadb服务端

# yum install -y mariadb-server

[root@localhost yum.repos.d]# mariadb --version
mariadb  Ver 15.1 Distrib 10.6.4-MariaDB, for Linux (x86_64) using readline 5.1

五、安装后，运行安全加固(过程略)

可参考：

简单快速安装Apache+PHP+MySql服务环境（一）

https://www.cnblogs.com/iverson-3/p/11198712.html