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#1
VALIDATE PASSWORD PLUGIN can be used to test passwords...
Press y|Y for Yes, any other key for No: N (我的选项)#2
Please set the password for root here...
New password: (输入密码)
Re-enter new password: (重复输入)#3
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them...
Remove anonymous users? (Press y|Y for Yes, any other key for No) : N (我的选项)#4
Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network...
Disallow root login remotely? (Press y|Y for Yes, any other key for No) : N (我的选项)#5
By default, MySQL comes with a database named 'test' that
anyone can access...
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : N (我的选项)#6
Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.
Reload privilege tables now? (Press y|Y for Yes, any other key for No) : Y (我的选项)三、查mysql服务状态
systemctl status mysql.service显示如下结果说明mysql服务是正常的：
四、修改root账户秘密认证方式：
连接到Mysql：
sudo mysql -uroot -p1、查看用户：
mysql> select user, plugin from mysql.user;
2、重置Root密码，修改认证方式：
mysql> update mysql.user set authentication_string=PASSWORD('123456'), plugin='mysql_native_password' where user='root';
mysql>flush privileges;
mysql> exit五、配置远程访问mysql:
1、修改配置文件，注释掉bind-address = 127.0.0.1
sudo vi /etc/mysql/mysql.conf.d/mysqld.cnf2、保存退出，然后进入mysql服务
mysql -uroot -p3、执行授权命令：
mysql>grant all ON *.* to root@'%' identified by '123456' with grant option;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> exit
Bye其中
root@%，localhost就是本地访问，配置成%就是所有主机都可连接；第二个'123456'为你给新增权限用户设置的密码。4、重启
sudo /etc/init.d/mysql restart六、删除MySQL
想安装MySQL 8.0或者重装MySQL 5.7的前提条件，可以先删除已有的。
1.删除 mysql:
sudo apt autoremove --purge mysql-server-*
sudo apt remove mysql-server
sudo apt autoremove mysql-server
sudo apt remove mysql-common2.清理残留数据
dpkg -l |grep ^rc|awk '{print $2}' |sudo xargs dpkg -P七、安装mysql可视化工具mysql-workbench
可以到官网，选择系统点击跳转下载 Workbench。
也可以更新软件包索引并直接安装 MySQL Workbench 软件包：
sudo apt update
sudo apt install mysql-workbench启动 MySQL Workbench。
您可以通过键入
mysql-workbench或单击 MySQL Workbench 图标 (Activities -> MySQL Workbench) 从命令行启动它。当您第一次启动 MySQL Workbench 时，应出现如下窗口：
连接配置界面
要添加新连接，请单击 “MySQL Connections” 旁边带圆圈的加号⊕。
将打开一个新窗口 “Setup New Connection form”。在此示例中，我们将通过 SSH 连接到远程服务器。在“Connection name”字段中输入有意义的名称，然后
Standard TCP/IP over SSH从“连接方法”下拉列表中进行选择。
