使用yum安装mysql数据库的软件包 [root@xuegod63 ~]# yum -y install mariadb-server mariadb 。
注： mariadb-server #MariaDB数据库 mariadb # MariaDB服务器Linux下客户端 。
注：从centos7系统开始，系统中自带的mysql数据库变成了mariadb-server，mariadb-server和mysql操作上一样。mariadb-server是mysql的一个分支。
启动数据库服务[root@xuegod63 ~]# systemctl start mariadb #启动MariaDB服务。[root@xuegod63 ~]# systemctl enable mariadb #设置开启自动启动MariaDB服务。
安装完mariadb-server后，运行mysql_secure_installation去除安全隐患，[root@xuegod63 ~]# mysql_secure_installation #进入安全配置导向。
NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQLSERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!
In order to log into MySQL to secure it, we'll need the current，password for the root user. If you've just installed MySQL, and，you haven't set the root password yet, the password will be blank,，so you should just press enter here.Enter current password for root (enter for none): #初次运行直接回车，因为root用户没有密码。
OK, successfully used password, moving on，Setting the root password ensures that nobody can log into the MySQL，root user without the proper authorisation.，Set root password? [Y/n] Y #是否设置root用户密码,输入Y。
New password: 123456 #新密码123456，Re-enter new password: 123456，Password updated successfully!Remove anonymous users? [Y/n] Y #是否删除匿名用户,生产环境建议删除，所以直接回车或Y。
Success!Normally, root should only be allowed to connect from 'localhost'. Thisensures that someone cannot guess at the root password from the network.Disallow root login remotely? [Y/n] Y #是否禁止root远程登录,根据自己的需求选择Y/n并回车建议禁止。
Success!By default, MariaDB comes with a database named 'test' that anyone canaccess. This is also intended only for testing, and should be removedbefore moving into a production environment.Remove test database and access to it? [Y/n] Y #是否删除test数据库,直接回车或Y。
想使用Linux已经很长时间了，由于没有硬性任务一直也没有系统学习，近日由于工作需要必须使用Linux下的MySQL。本以为有Windows下使用SQL Server的经验，觉得在Linux下安装MySql应该是易如反掌的事，可在真正安装和使用MySQL时走了很多弯路，遇见很多问题，毕竟Linux 和Windows本身就有很大区别。为了让和我一样的初学者在学习的过程中少走弯路，尽快入门，写了此文，希望对您有所帮助。本文的Linux环境是 Red Hat 9.0，MySQL是4.0.16。
http://linux.chinaitlab.com/MYSQL/713001.html本回答被提问者采纳