Centos安装mariadb-server

安装

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yum install mariadb-server

注意:安装之后初始密码为空

常用命令

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systemctl start mariadb #启动服务
systemctl enable mariadb #设置开机启动
systemctl restart mariadb #重新启动

初始化

执行命令mysql_secure_installation进行初始化,过程中会让你设置root密码等信息,自己按照提示一步步来即可。

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[root@iZj6chtv8h63huh6sbynuiZ ~]# 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!

修改mariadb的datadir

目标:将mariadb默认的datadir(/var/lib/mysql)迁移到/data/mysql

停止mariadb服务

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systemctl stop mariadb

创建新datadir

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mkdir /data/mysql
chown -R mysql:mysql /data/mysql

将数据文件复制过来

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cp -a /var/lib/mysql    /data/mysql

修改配置

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vi /etc/my.cnf

[mysqld]
# datadir=/var/lib/mysql
# 注释掉之前的,将datadir设置成新目录
datadir=/data/mysql

重新启动mariadb服务

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systemctl start mariadb

Centos7初始化安装mariadb

安装MariaDB

安装命令

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yum -y install mariadb mariadb-server

安装完成MariaDB,首先启动MariaDB

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systemctl start mariadb

设置开机启动

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systemctl enable mariadb

接下来进行MariaDB的相关简单配置

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mysql_secure_installation

首先是设置密码,会提示先输入密码

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Enter current password for root (enter for none):<–初次运行直接回车

设置密码

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Set root password? [Y/n] <– 是否设置root用户密码,输入y并回车或直接回车
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

其他配置

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Remove anonymous users? [Y/n] <– 是否删除匿名用户,回车

Disallow root login remotely? [Y/n] <–是否禁止root远程登录,回车,

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

Reload privilege tables now? [Y/n] <– 是否重新加载权限表,回车

初始化MariaDB完成,接下来测试登录

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mysql -uroot -ppassword

完成。