mysql-8.0.31-winx64详细安装教程

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于 2022-12-13 21:04:31 首次发布

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本文详细介绍MySQL 8.0的下载、安装及配置过程，包括环境变量设置、my.ini文件配置、服务安装与启动等步骤，并演示了如何通过命令行进行初始密码获取及密码修改。

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1、官网下载mysql

下载地址：https://dev.mysql.com/downloads/mysql/

2、下载结束后，解压到指定目录，笔者存放在D盘，为求简单，设置目录如下：

D:\mysql8\mysql-8.0

3、新建my.ini文件，并粘贴如下内容，可依实际修改。

[mysqld]
port=3306
basedir=D:\mysql8\mysql-8.0
datadir=D:\mysql8\mysql-8.0\Data

max_connections=200
max_connect_errors=10

character-set-server=utf8mb4
default-storage-engine=INNODB
default_authentication_plugin=mysql_native_password

[mysql]
default-character-set=utf8mb4

[client]
port=3306
default-character-set=utf8mb4

4、安装与配置mysql ，以管理员身份打开cmd

d:\mysql8\mysql-8.0>cd bin   #管理员身份打开cmd，进入mysql bin目录

d:\mysql8\mysql-8.0\bin>mysqld --install  #运行安装命令
#笔者前期运行过，首次运行该命令结果为 Service successfully installed.
The service already exists!
The current server installed: D:\mysql8\mysql-8.0\bin\mysqld MySQL

d:\mysql8\mysql-8.0\bin>mysqld --initialize  
#初始化 Data目录下会生成计算名命名的 .err文件，初始密码位于***@localhost:后

d:\mysql8\mysql-8.0\bin>net start mysql  #启动mysql服务
MySQL 服务正在启动 .
MySQL 服务已经启动成功。


d:\mysql8\mysql-8.0\bin>mysql -u root -p  #登录
Enter password: ************
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.31

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'xxxxxxx'; #重设密码
Query OK, 0 rows affected (0.01 sec)

mysql>
mysql>
mysql> exit  #退出
Bye

d:\mysql8\mysql-8.0\bin>mysql -u root -p  #重新登录，验证证新密码
Enter password: *********
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 8.0.31 MySQL Community Server - GPL

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>
mysql>

初始化后的密码信息存放于