day10-连接mysql虚拟机报错

连接mysql时报：message from server: "Host '192.168.76.1' is not allowed to connect to this MySQL server

虚拟机上面安装好MySQL，但是用工具远程连接时候，报错

处理方案：
1、先用localhost方式连接到MySQL数据库，然后使用MySQL自带的数据库mysql;
use mysql；
2、执行：select host from user where user = 'root'; 发现，host的值就是localhost。
所以将它的值改掉：update user set host='%' where user = 'root';
3、修改完成后，执行：flush privileges;
将修改内容生效，再次配置时，用IP地址或者localhost 就都能正常连接到MySQL数据库了。

mysql> use mysql;
Database changed

mysql> select host from user;
+-----------------------+
| host                  |
+-----------------------+
| 127.0.0.1             |
| ::1                   |
| localhost             |
| localhost             |
| localhost.localdomain |
| localhost.localdomain |
+-----------------------+
6 rows in set (0.19 sec)

mysql> update user set host='%' where user='root';
ERROR 1062 (23000): Duplicate entry '%-root' for key 'PRIMARY' 
#这里报错不用管，直接刷新

mysql> flush privileges;
Query OK, 0 rows affected (0.02 sec)
重新远程连接OK