【mysql】windows下 mysql 5.7 升级到8.0

mysql 5.7 升级到8.0

• 下载mysql 8.0绿色版

  • MySQL :: Download MySQL Community Server

  

• 将下载的包解压到C盘：

  • C:\Program Files\MySQL\mysql-8.0.33-winx64

• 配置环境变量，更改MYSQL_HOME的值

• 删除5.7服务

  • 查找mysql57

  C:\Program Files\MySQL\mysql-8.0.33-winx64\bin>sc query mysql57
  
  SERVICE_NAME: mysql57
          TYPE               : 10  WIN32_OWN_PROCESS
          STATE              : 4  RUNNING
                                  (STOPPABLE, PAUSABLE, ACCEPTS_SHUTDOWN)
          WIN32_EXIT_CODE    : 0  (0x0)
          SERVICE_EXIT_CODE  : 0  (0x0)
          CHECKPOINT         : 0x0
          WAIT_HINT          : 0x0
  

  • 删除mysql57服务

  C:\Program Files\MySQL\mysql-8.0.33-winx64\bin>sc delete mysql57
  [SC] DeleteService 成功
  

• 创建mysql80服务

  • 初始化服务

  C:\Program Files\MySQL\mysql-8.0.33-winx64\bin>mysqld --initialize --user=mysql --console
  2023-04-20T07:53:17.605901Z 0 [System] [MY-013169] [Server] C:\Program Files\MySQL\mysql-8.0.33-winx64\bin\mysqld.exe (mysqld 8.0.33) initializing of server in progress as process 6556
  2023-04-20T07:53:17.677427Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
  2023-04-20T07:53:24.766864Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.
  2023-04-20T07:53:28.663340Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: aBjjrs_wp9l*
  

  • 需要注意初始化命令最后生产的初始密码：A temporary password is generated for root@localhost: aBjjrs_wp9l*
  • 安装服务mysql80

  C:\Program Files\MySQL\mysql-8.0.33-winx64\bin>mysqld -install MySql80
  Service successfully installed.
  

  • 启动服务

  C:\Program Files\MySQL\mysql-8.0.33-winx64\bin>net start MySql80
  MySql80 服务正在启动 ...
  MySql80 服务已经启动成功。
  

• 此时服务安装完成，通过mysql -uroot -p 命令使用前面生成的初始登录

  • 登录后可修改密码：

  ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123456';