安装mariadb

centos7安装mariadb

安装

yum -y install mariadb mariadb-server

安装完成MariaDB，首先启动MariaDB

systemctl start mariadb

设置开机启动

systemctl enable mariadb

MariaDB的相关简单配置

1. 初始化

mysql_secure_installation

2. 首先是设置密码，会提示先输入密码

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

3. 设置密码

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

4. 其他配置

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

5. 初始化MariaDB完成，接下来测试登录

mysql -uroot -ppassword

配置MariaDB的字符集

1. 文件/etc/my.cnf

vi /etc/my.cnf
在[mysqld]标签下添加
init_connect='SET collation_connection = utf8_unicode_ci' 
init_connect='SET NAMES utf8' 
character-set-server=utf8 
collation-server=utf8_unicode_ci 
skip-character-set-client-handshake

2. 文件/etc/my.cnf.d/client.cnf

vi /etc/my.cnf.d/client.cnf
在[client]中添加
default-character-set=utf8

3. 文件/etc/my.cnf.d/mysql-clients.cnf

vi /etc/my.cnf.d/mysql-clients.cnf
在[mysql]中添加
default-character-set=utf8

4. 全部配置完成，重启mariadb

systemctl restart mariadb

5. 进入MariaDB查看字符集

mysql> show variables like "%character%";show variables like "%collation%";

显示为

Variable_name	Value
character_set_client	utf8
character_set_connection	utf8
character_set_database	utf8
character_set_filesystem	binary
character_set_results	utf8
character_set_server	utf8
character_set_system	utf8
character_sets_dir	/usr/share/mysql/charsets/

8 rows in set (0.00 sec)

Variable_name	Value
collation_connection	utf8_unicode_ci
collation_database	utf8_unicode_ci
collation_server	utf8_unicode_ci

3 rows in set (0.00 sec)

字符集配置完成。

添加用户，设置权限

创建用户命令

mysql>create user username@localhost identified by 'password';
直接创建用户并授权的命令

mysql>grant all on \*.\* to username@localhost indentified by 'password';
授予外网登陆权限 

mysql>grant all privileges on \*.\* to username@'%' identified by 'password';
授予权限并且可以授权

mysql>grant all privileges on \*.\* to username@'hostname' identified by 'password' with grant option;
简单的用户和权限配置基本就这样了。

其中只授予部分权限把 其中 all privileges或者all改为select,insert,update,delete,create,drop,index,alter,grant,references,reload,shutdown,process,file其中一部分。

远程连接授权：
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION;

授权后执行
flush privileges