下载MYSQL8
地址：https://www.mysql.com/downloads/
1.滑动网页到最下面，选择Community (GPL) Downloads »
3. 这里依然选择绿色手动的安装方式：需要安装包的选择MSI安装方式
正式安装：
1. 选择你的一个没有中文的目录解压安装：解压后目录如图我所示：
2.重要配置文件保存为mysql.ini 放到mysql根目录下面
[mysqld]
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
# These are commonly set, remove the # and set as required.
# basedir = .....
# datadir = .....
# port = .....
# server_id = .....
basedir = "D:\DevTools\mysql-8.0.13-winx64"
datadir = "D:\DevTools\mysql-8.0.13-winx64\data\"
port = 3306
max_connections=1000
max_user_connections=500
wait_timeout=200
character-set-server=utf8
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
#character-set-server=UTF-8
default-storage-engine=INNODB
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
#忘记密码时使用
#skip-grant-tables
#设置协议认证方式(重点啊)
default_authentication_plugin=mysql_native_password
[mysql]
default-character-set=utf8
3.添加环境变量
实际上不添加环境变量也是可以的，这里只是为了方便：我这里的是安装在这个目录，只需要将他添加到你的path目录即可
4.安装服务 mysqld --install 服务名（可以不写，默认是MySql,如果你的电脑上要安装付哦个mysql,这里的服务名写一下做区分），安装成功后控制它会提示：successful
mysqld --install [服务名]
5.执行安装
mysqld --initialize-insecure //这里会等待一段时间，
6.启动服务（这时候不要去登录mysql,登录不进去的，必须要先启动）
7.登录mysql
mysql -u root -p //初始化密码为nULL
8.如果你的连接客户端出现2056错误那么是不支持mysql8的通讯协议
# 执行下面的代码
use mysql;
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';
# 如果你的客户端支持 下面的也可以mysql7也是可以的
SET PASSWORD = PASSWORD('123456');
好了！安装完成！