MySQL8初始化、账户创建及权限分配

1、MySQL8没有初始的data目录，需要在使用前进行初始化。

MySQL8下载地址：MySQL :: Download MySQL Community Server

基本配置文件 my.cnf

[mysqld]
basedir = D:\mysql
datadir = D:\mysql\data
port = 3336
character-set-server = utf8mb4
default_authentication_plugin=mysql_native_password

[mysql]
default-character-set = utf8mb4

[client]
default-character-set = utf8mb4

数据库初始化：mysqld –initialize

数据库初始化后随机密码在日志文件中hostname.err，需要使用该密码登录并修改密码。

alter user 'root'@'localhost' identified by "password";
alter user 'root'@'localhost' identified with mysql_native_password by "root";
alter user 'root'@'localhost' identified with caching_sha2_password by "root";

MySQL8默认的认证插件是caching_sha2_password，很多客户端都不支持，可将默认的认证插件修改为mysql_native_password，在配置文件中配置default_authentication_plugin=mysql_native_password。

2、创建账号及权限分配

#创建账号、分配权限
CREATE USER 'sky'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON *.* TO 'sky'@'localhost' WITH GRANT OPTION;

CREATE USER 'sky'@'%' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON *.* TO 'sky'@'%' WITH GRANT OPTION;

CREATE USER 'sky'@'localhost' IDENTIFIED BY 'password';
GRANT RELOAD,PROCESS ON *.* TO 'sky'@'localhost';

#显示账号及权限相关信息
SHOW GRANTS FOR 'sky'@'localhost';

SHOW CREATE USER 'sky'@'localhost';

MySQL账号管理相关参考：

https://dev.mysql.com/doc/refman/8.0/en/adding-users.html

https://dev.mysql.com/doc/refman/8.0/en/account-management-sql.html