MySQL8.x 安装及配置（Windows）

1. 解压并配置

新建 my.ini 配置文件，配置内容入下：

[mysqld]
basedir=D:\devSoft\mysql-8.0.21-winx64
datadir=D:\devSoft\mysql-8.0.21-winx64\data

default-character-set=utf8

bind-address=0.0.0.0

2. 初始化

    cd %mysql_home%in
    mysqld --initialize --console

    记住密码：
    这里找不到密码，猜测默认root用户无密码！

        D:devSoftmysql-8.0.21-winx64in>mysqld --initialize --console
        2020-10-27T06:33:38.100291Z 0 [System] [MY-013169] [Server] D:devSoftmysql-8.0.21-winx64inmysqld.exe (mysqld 8.0.21) initializing of server in progress as process 275136
        2020-10-27T06:33:38.611819Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
        2020-10-27T06:33:49.304907Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.
        2020-10-27T06:34:17.576783Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: zgZA(5NtL_<q

        D:devSoftmysql-8.0.21-winx64in>

    注意: 要把原本已有的 MySQL 环境变量 删掉，不然初始化操作会出问题！    

3. 注册为Windows服务　　

注册服务

mysqld --install mysql8
移除服务：
SC delete mysql8

 4. 启动mysql服务

net start mysql8

5. 登录

　　cd %mysql_home%in

　　mysql -uroot -pzgZA(5NtL_<q

6. 重置root用户密码

方式一：
ALTER USER "root"@"localhost" IDENTIFIED BY "root"
方式二：（这个方式尝试没成功）
set password for root@localhost=password('666');

7. 允许远程访问

use mysql
update user set host='%' where user='root';
mysql> select host,user from user;

    +-----------+------------------+
    | host      | user             |
    +-----------+------------------+
    | %         | root             |
    | localhost | mysql.infoschema |
    | localhost | mysql.session    |
    | localhost | mysql.sys        |
    +-----------+------------------+
    4 rows in set (0.00 sec)

8.常见问题

问题: VCRUNTime140_1.dll 找不到
解决：从微软官方下载VCRUNTime140_1.dll，放到 C:WindowsSystem32 目录下