mysql -u root -p
mysql>use mysql;
mysql>update user set host =’%'where user =’root’;
mysql>flush privileges;
mysql> use mysql
Reading table information for completion of table and column names
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Database changed
mysql> update user set password=password('root123') where user='root' and host='localhost'
-> ;
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> select 'host' from user where user='root'
-> ;
+------+
| host |
+------+
| host |
| host |
| host |
| host |
+------+
4 rows in set (0.00 sec)
mysql> GRANT ALL PRIVILEGES ON *.* TO ‘root’@‘%’ IDENTIFIED BY ‘root123’ WITH GRANT OPTION;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '%’ IDENTIFIED BY ‘root123’ WITH GRANT OPTION' at line 1
mysql> grant all privileges on *.* to 'root'@'%' identified by 'root123' with grant option;
Query OK, 0 rows affected (0.00 sec)
mysql> update user set host='%' where user='root'
-> flush privileges;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'flush privileges' at line 2
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> select host from user where user='root'
-> ;
+-----------------------+
| host |
+-----------------------+
| % |
| 127.0.0.1 |
| ::1 |
| localhost |
| localhost.localdomain |
+-----------------------+
5 rows in set (0.00 sec)
mysql> update user set host='%' where user='root';
ERROR 1062 (23000): Duplicate entry '%-root' for key 'PRIMARY'
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> select host,user from user where user='root'
-> ;
+-----------------------+------+
| host | user |
+-----------------------+------+
| % | root |
| 127.0.0.1 | root |
| ::1 | root |
| localhost | root |
| localhost.localdomain | root |
+-----------------------+------+
5 rows in set (0.00 sec)
mysql>