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windows安装mysql8
西柚
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windows安装mysql8

第一步:
  下载后将文件解压到想安装位置D:\mysql-8.0.12-winx64
第二步:设置环境变量
  变量名:MYSQL_HOME
  变量值:D:\mysql-8.0.12-winx64\mysql-8.0.12-winx64
  变量名:Path
  变量值:%MYSQL_HOME%\bin
第三步:配置初始化my.ini
  在D:\mysql-8.0.12-winx64\mysql-8.0.12-winx64中新建my.ini
并添加以下内容

  1. [mysqld]
  2. # 设置3306端口
  3. port=3306
  4. # 设置mysql的安装目录
  5. basedir=D:\mysql-8.0.12-winx64\mysql-8.0.12-winx64
  6. # 设置mysql数据库的数据的存放目录
  7. datadir=D:\MySQL\Data
  8. # 允许最大连接数
  9. max_connections=200
  10. # 允许连接失败的次数。这是为了防止有人从该主机试图攻击数据库系统
  11. max_connect_errors=10
  12. # 服务端使用的字符集默认为UTF8
  13. character-set-server=utf8mb4
  14. # 创建新表时将使用的默认存储引擎
  15. default-storage-engine=INNODB
  16. # 默认使用“mysql_native_password”插件认证
  17. default_authentication_plugin=mysql_native_password
  18. [mysql]
  19. # 设置mysql客户端默认字符集
  20. default-character-set=utf8mb4
  21. [client]
  22. # 设置mysql客户端连接服务端时默认使用的端口
  23. port=3306
  24. default-character-set=utf8mb4

第四步:以管理员身份运行cmd
  d:回车
  cd D:\mysql-8.0.12-winx64\mysql-8.0.12-winx64\bin
   mysqld —initialize —console //生成数据库默认密码,复制保存
第五步:启动MySql服务
  net start mysql
第六步:登录MySQL数据库
  mysql -u root -p

修改root密码 (123456) ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123456';

MySQL卸载
1.在 Windows 命令提示符下运行:
停止: net stop MySQL
卸载: sc delete MySQL
2.开始->运行-> regedit 看看注册表里这几个地方删除没有
  HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\Application\MySQLD Service 目录删除

  HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\Eventlog\Application\MySQL 目录删除

  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Application\MySQL 目录删除

3、win10系统,打开C盘,找到ProgramData 删除有关MySQL

启动mysql时显示:服务名无效

解决:

STEP1:进入mysql安装的目录下D:\mysql-8.0.12-winx64\mysql-8.0.12-winx64;进入bin目录

STEP2:mysqld —remove

STEP3:mysqld —install

提示:Service successfully installed.

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