版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
背景：windows10服务器上以前项目一直用的MySQL5.5，现在项目需要用MySQL8，为了不影响以前的项目（版本直接有很多不兼容的地方），打算安装两个MySQL
1、下载mysql-8.0.17-winx64.zip
链接：https://pan.baidu.com/s/1eo8biZIBK-xR2cCWAeAYkw
提取码：82ix2、解压后放入随便一个盘，我放F：\MySQL8目录下
完整路径：F:\MySQL8\mysql-8.0.17-winx64
在F:\MySQL8\mysql-8.0.17-winx64路径下新加my.ini文件
内容：
[mysqld]
port=3307
basedir=F:\MySQL8\mysql-8.0.17-winx64
datadir=F:\MySQL8\mysql-8.0.17-winx64\data
max_connections=200
character-set-server=utf8
default-storage-engine=INNODB
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
default_authentication_plugin=mysql_native_password
[mysql]
default-character-set=utf8
3、以管理员身份去运行命令行窗口
C:\Windows\system32>F:
F:\>cd MySQL8
F:\MySQL8>cd mysql-8.0.17-winx64/bin
F:\MySQL8\mysql-8.0.17-winx64\bin>mysqld install mysql8 --default-file="F:\MySQL8\mysql-8.0.17-winx64\my.ini"
成功安装后会提示：
Service successfully installed.4、去服务里面，可查看到此时多了一个mysql8服务
5、初始化数据库
mysql服务安装成功后，就需要初始化数据库了，否则是无法启动服务的。
在bin目录下执行如下命令
F:\MySQL8\mysql-8.0.17-winx64\bin>mysqld --initialize
然后稍等片刻：文件夹中会自动生成data目录
6、打开注册表，找到HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mysql8,修改ImagePath参数，更正mysql8服务相关路径。
win+R，输入regedit，打开注册表
7、启动数据库，修改密码
F:\MySQL8\mysql-8.0.17-winx64\bin>net start mysql8
mysql8 服务正在启动 ..
mysql8 服务已经启动成功。F:\MySQL8\mysql-8.0.17-winx64\bin>mysql -P3307 -uroot -p
Enter password:这里的密码从F:\MySQL8\mysql-8.0.17-winx64\data\***.err获取
找到temporary password is generated for root@localhost: =*KuaCxQX4nd
后面的 =*KuaCxQX4nd 就是临时密码（不包括空格）F:\MySQL8\mysql-8.0.17-winx64\bin>mysql -P3307 -uroot -p
Enter password: ************
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.17
Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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 'newpassword';
Query OK, 0 rows affected (0.12 sec)
mysql> quit
Bye8、新加用户，设置远程连接
F:\MySQL8\mysql-8.0.17-winx64\bin>mysql -P3307 -uroot -p
Enter password: ********
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 11
Server version: 8.0.17 MySQL Community Server - GPL
Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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> use mysql;
Database changed
mysql>
mysql> select user,host,plugin from user;
+------------------+-----------+-----------------------+
| user | host | plugin |
+------------------+-----------+-----------------------+
| mysql.infoschema | localhost | caching_sha2_password |
| mysql.session | localhost | caching_sha2_password |
| mysql.sys | localhost | caching_sha2_password |
| root | localhost | caching_sha2_password |
+------------------+-----------+-----------------------+
4 rows in set (0.00 sec)
mysql> CREATE USER 'newuser'@'%' IDENTIFIED BY 'newuserpassword';
Query OK, 0 rows affected (0.10 sec)
mysql> select user,host,plugin from user;
+------------------+-----------+-----------------------+
| user | host | plugin |
+------------------+-----------+-----------------------+
| newuser | % | caching_sha2_password |
| mysql.infoschema | localhost | caching_sha2_password |
| mysql.session | localhost | caching_sha2_password |
| mysql.sys | localhost | caching_sha2_password |
| root | localhost | caching_sha2_password |
+------------------+-----------+-----------------------+
5 rows in set (0.00 sec)
mysql> GRANT ALL ON *.* TO 'newuser'@'%';
Query OK, 0 rows affected (0.13 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.05 sec)
mysql> ALTER USER 'newuser'@'%' IDENTIFIED WITH mysql_native_password BY 'newuserpassword';
Query OK, 0 rows affected (0.08 sec)
mysql> select user,host,plugin from user;
+------------------+-----------+-----------------------+
| user | host | plugin |
+------------------+-----------+-----------------------+
| newuser | % | mysql_native_password |
| mysql.infoschema | localhost | caching_sha2_password |
| mysql.session | localhost | caching_sha2_password |
| mysql.sys | localhost | caching_sha2_password |
| root | localhost | caching_sha2_password |
+------------------+-----------+-----------------------+
5 rows in set (0.00 sec)
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.07 sec)
mysql>9、截图：
