# 查看有没有安装MySQL：

dpkg -l | grep mysql

# 安装MySQL：

apt install mysql-server

正在读取软件包列表... 完成

正在分析软件包的依赖关系树

正在读取状态信息... 完成

将会同时安装下列软件：

libaio1 libevent-core-2.1-6 libhtml-template-perl mysql-client-5.7

mysql-client-core-5.7 mysql-common mysql-server-5.7 mysql-server-core-5.7

建议安装：

libipc-sharedcache-perl mailx tinyca

下列【新】软件包将被安装：

libaio1 libevent-core-2.1-6 libhtml-template-perl mysql-client-5.7

mysql-client-core-5.7 mysql-common mysql-server mysql-server-5.7

mysql-server-core-5.7

升级了 0 个软件包，新安装了 9 个软件包，要卸载 0 个软件包，有 237 个软件包未被升级。

需要下载 20.5 MB 的归档。

解压缩后会消耗 160 MB 的额外空间。

您希望继续执行吗？ [Y/n]  y

安装完成登录

root@ubuntu:~# mysql -u root -p

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.7.27-0ubuntu0.18.04.1 (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.

授权设置密码

mysql> grant all on *.* to root@'%' identified by 'root' with grant option;

Query OK, 0 rows affected, 1 warning (0.81 sec)

刷新权限

mysql> flush privileges;

Query OK, 0 rows affected (0.03 sec)

退出

mysql> exit

Bye

重新启动

root@ubuntu:~# systemctl restart mysql

远程登录设置

root@ubuntu:~# mysql -u root -p

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.7.27-0ubuntu0.18.04.1 (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.

切换数据库

mysql> use mysql

Reading table information for completion of table and column names

You can turn off this feature to get a quicker startup with -A

Database changed

设置host属性

mysql> update user set host = '%' where user = 'root';

ERROR 1062 (23000): Duplicate entry '%-root' for key 'PRIMARY'

报错可以忽略，可能已存在通过查询

mysql> select host from user where user='root';

修改配置文件

root@ubuntu:~# sudo vim /etc/mysql/mysql.conf.d/mysqld.cnf

找到bind 127.0.0.1 ::1 这一行将它注释掉

root@ubuntu:~# service mysql restart

完成