Ubuntu虚拟机安装mysql

版本：Ubuntu_1804、mysql_5.7

1. sudo apt-get update
2. sudo apt-get install mysql-server-5.7
3. vim /etc/mysql/mysql.conf.d/mysqld.cnf
   注释掉bind-address和skip-external-locking并保存
4. mysql默认username为root，密码为空，
   可以执行sudo mysql_secure_installation按照提示初始化密码。
5. sudo mysql -u root进入mysql命令行后，新建一个mysql管理员账户。
   参照：host-xxx-xx-xxx-xxx-is-not-allowed-to-connect-to-this-mysql-server
   具体配置命令：

mysql> CREATE USER '${user_name}'@'localhost' IDENTIFIED BY '${some_pass}';
mysql> GRANT ALL PRIVILEGES ON *.* TO '${user_name}'@'localhost'
    ->     WITH GRANT OPTION;
mysql> CREATE USER '${monty}'@'%' IDENTIFIED BY '${some_pass}';
mysql> GRANT ALL PRIVILEGES ON *.* TO '${user_name}'@'%'
    ->     WITH GRANT OPTION;

6. 使用mysql客户端,输入ip、端口、新建的mysql管理员账户、密码即可登录，大功告成。