MariaDB版本10.1.21

Fedora版本25

1.Change root user

　　sudo -i

2. dnf install -y mysql

    dnf install -y mariadb mariadb-server

3. Start mariadb server and autostart mariadb on boot

　　systemctl start mariadb.server #启动

 　  systemctl enable mariadb.service #随系统启动

4. 初始设置mariadb

　/usr/bin/mysql_secure_installation

NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
      SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!

In order to log into MariaDB to secure it, we\‘ll need the current
password for the root user.  If you\‘ve just installed MariaDB, 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): 
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MariaDB
root user without the proper authorisation.

Set root password? [Y/n] y
New password: 
Re-enter new password: 
Password updated successfully!
Reloading privilege tables..
 ... Success!


By default, a MariaDB installation has an anonymous user, allowing anyone
to log into MariaDB 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] y
 ... 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] y
 ... Success!

By default, MariaDB 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] y
 - 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] y
 ... Success!

Cleaning up...

All done!  If you\‘ve completed all of the above steps, your MariaDB
installation should now be secure.

Thanks for using MariaDB!

5.Connect to mysql database(localhost) with password
  mysql -u root -p
6.设置远程访问权限

　　GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘%‘ IDENTIFIED BY ‘123‘ WITH GRANT OPTION; ##root用户可以使用密码123从任何地方访问

　　FLUSH   PRIVILEGES; #刷新生效

　　GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘192.168.1.3‘ IDENTIFIED BY ‘123‘ WITH GRANT OPTION;　　##root用户可以使用密码123从192.168.1.3访问

　　FLUSH   PRIVILEGES;

　　GRANT ALL PRIVILEGES ON  mydb.* TO ‘root‘@‘192.168.1.3‘ IDENTIFIED BY ‘123‘ WITH GRANT OPTION; ##root用户可以使用密码123从192.168.1.3访问mydb数据库

　　FLUSH   PRIVILEGES;

7.设置firewall防火墙

　　7.1 取得激活的防火墙区域

　　　　firewall-cmd --get-active-zones

       例如输出：

　　　　FedoraServer   #区域

　　　　　　interfaces:ens33　　#网卡

　　7.2 添加防火墙规则

　　　　firewall-cmd --permanent --zone=FedoraServer  --and-service=mysql

　　　　　　或者

　　　　firewall-cmd --permanent --zone=FedoraServer  --add-port=3306/tcp

　　7.3 重启防火墙

　　　　systemctl restart firewalld.service

8.done

Fedora25安装mariadb并设置权限