使用apt-get安装 MySQL软件包（快速方便，无需去MySQL官网下载压缩包）
apt-get install mysql-server
注意：中途会弹框，设置你的MySQL新密码以及确认密码，输入就可以了，然后回车会继续安装
查看MySQL安装目录
whereis mysql
mysql: /usr/bin/mysql /usr/lib/mysql /etc/mysql /usr/share/mysql /usr/share/man/man1/mysql.1.gz
查看配置文件–配置远程访问
修改此处
bind-address = 127.0.0.1
改为如下（表示都可以访问）
bind-address = 0.0.0.0
重启服务
service mysql restart
登录MySQL
mysql -u root -p
root@ubuntu:/etc/mysql/mysql.conf.d# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.7.27-0ubuntu0.16.04.1 (Ubuntu)
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>
查看数据库
使用系统数据库、设置连接权限
use sys
显示所有表
授权 root 用户允许所有人连接
本地MySQL可视化连接测试
退出MySQL
输入命令：quit