安装 MySQL

sudo apt-get install -y mysql-server mysql-client

设置登录账户信息

update mysql.user set plugin="mysql_native_password" where user="root";
grant all on *.* to root@"localhost";
update mysql.user set authentication_string=password('密码') where user='root'and Host = 'localhost';
flush privileges;

测试登录

mysql -uroot -p