CentOS 7.3安装mariadb

用户： root

安装方式： yum

 

1.查询当前系统已有的mariadb包 并卸载掉

rpm -e $(rpm -qa| grep mariadb)

2.安装mariadb服务

yum install mariadb-server mariadb

3.编辑/etc/my.cnf文件配置mysql数据库编码

编辑配置文件在  [mysqld]  中加入以下配置项

character-set-server=utf8
collation-server=utf8_unicode_ci

4.启动mariadb服务

systemctl start mariadb

5.设置开机自启动

systemctl enable mariadb

6.修改root 密码
MariaDB 服务root 密码默认为空, 要重设 root 密码有两种方法, 一种是传统的方法, 登入 mysql 后修改密码,

[root@mariadb ~]# mysql
MariaDB [(none)]> use mysql;
MariaDB [(none)]> set password for root@localhost = password('passwd'); 
MariaDB [(none)]> set password for root@'%' = password('passwd'); 
MariaDB [(none)]> flush privileges;

如果远程用户需要连接需要再执行：

MariaDB [(none)]> use mysql; 
MariaDB [(none)]> GRANT all PRIVILEGES ON *.* TO 'root'@'192.168.3.77' IDENTIFIED BY 'passwd'; --(其中IP地址可换为‘%’表示所有机器均可使用该密码连接；也可更换为‘localhost’，表示本机连接时的密码)
MariaDB [(none)]> flush privileges;

另一种是用 mysql_secure_installation, 这个方法只要在指令模式输入 mysql_secure_installation, 跟著步骤回答问题就可以, 以下会看看登入 mysql 修改密码:

[root@mariadb ~]# mysql_secure_installation

NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL

SERVERS 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

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] <– 是否设置root用户密码，输入Y按enter确认

New password: <– 设置root用户的密码

Re-enter new password: <– 再输入一次你设置的密码

Password updated successfully!

Reloading privilege tables..

… Success!

By default, a MySQL installation has an anonymous user, allowing anyone

to log into MySQL without having to have a user account created for

them. This is intended only for testing, and to make the installation

go a bit smoother. You should remove them before moving into a

production environment.

Remove anonymous users? [Y/n] <– 是否删除匿名用户,生产环境建议删除

… Success!

Normally, root should only be allowed to connect from 'localhost'. This

ensures that someone cannot guess at the root password from the network.

Disallow root login remotely? [Y/n] <–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, MySQL comes with a database named 'test' that anyone can

access. This is also intended only for testing, and should be removed

before moving into a production environment.

Remove test database and access to it? [Y/n] <– 是否删除test数据库,直接回车

- Dropping test database…

… Success!

- Removing privileges on test database…

… Success!

Reloading the privilege tables will ensure that all changes made so far

will take effect immediately.

Reload privilege tables now? [Y/n] <– 是否重新刷新权限表，按Y确认

… Success!

Cleaning up…

All done! If you've completed all of the above steps, your MySQL

installation should now be secure.

Thanks for using MySQL!

[root@mariadb ~]#