MYSQL下对远程用户进行连接授权

Last login: Sat Jun 25 21:57:19 2011 from 172.16.0.56
[root@localhost ~]# /usr/bin/mysqladmin -u root password 123456
/usr/bin/mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password: NO)'
[root@localhost ~]# 
[root@localhost ~]# ls
anaconda-ks.cfg           Desktop      install.log.syslog
BAK20110625.bash_profile  install.log
[root@localhost ~]# mysql
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
[root@localhost ~]# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 187
Server version: 5.0.77 Source distribution

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema | 
| mysql              | 
| test               | 
+--------------------+
3 rows in set (0.03 sec)

mysql> ls    
    -> show databases;
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 'ls
show databases' at line 1
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema | 
| mysql              | 
| test               | 
+--------------------+
3 rows in set (0.00 sec)

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
mysql> show tables;
+---------------------------+
| Tables_in_mysql           |
+---------------------------+
| columns_priv              | 
| db                        | 
| func                      | 
| help_category             | 
| help_keyword              | 
| help_relation             | 
| help_topic                | 
| host                      | 
| proc                      | 
| procs_priv                | 
| tables_priv               | 
| time_zone                 | 
| time_zone_leap_second     | 
| time_zone_name            | 
| time_zone_transition      | 
| time_zone_transition_type | 
| user                      | 
+---------------------------+
17 rows in set (0.00 sec)

mysql> select * from host;
Empty set (0.00 sec)

mysql> select * from host 
    -> select * from host;
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 'select * from host' at line 2
mysql> select * from host;
Empty set (0.00 sec)

mysql> update user set host = '%' where user = 'root';
ERROR 1062 (23000): Duplicate entry '%-root' for key 1
mysql> ls
    -> show tables;
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 'ls
show tables' at line 1
mysql> ls show tables;
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 'ls show tables' at line 1
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema | 
| mysql              | 
| test               | 
+--------------------+
3 rows in set (0.01 sec)

mysql> update user set host = '%' where user = 'root';
ERROR 1062 (23000): Duplicate entry '%-root' for key 1
mysql> update user set host = '%' where user = 'root';
ERROR 1062 (23000): Duplicate entry '%-root' for key 1
mysql> Aborted
[root@localhost ~]# mysql
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
[root@localhost ~]# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 194
Server version: 5.0.77 Source distribution

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema | 
| mysql              | 
| test               | 
+--------------------+
3 rows in set (0.00 sec)

mysql> show tables;
ERROR 1046 (3D000): No database selected
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
mysql> show tables;
+---------------------------+
| Tables_in_mysql           |
+---------------------------+
| columns_priv              | 
| db                        | 
| func                      | 
| help_category             | 
| help_keyword              | 
| help_relation             | 
| help_topic                | 
| host                      | 
| proc                      | 
| procs_priv                | 
| tables_priv               | 
| time_zone                 | 
| time_zone_leap_second     | 
| time_zone_name            | 
| time_zone_transition      | 
| time_zone_transition_type | 
| user                      | 
+---------------------------+
17 rows in set (0.00 sec)

#对远程用户进行授权

mysql> GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;
Query OK, 0 rows affected (0.02 sec)

mysql>

#对远程指定IP用户进行授权
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'172.16.0.62' IDENTIFIED BY '123456' WITH GRANT OPTION;
Query OK, 0 rows affected (0.00 sec)

mysql>

 #对本机用户进行授权

GRANT ALL PRIVILEGES ON *.* TO root@localhost IDENTIFIED BY '123456' WITH GRANT OPTION;

#对127.0.0.1用户进行授权

GRANT ALL PRIVILEGES ON *.* TO root@127.0.0.1 IDENTIFIED BY '123456' WITH GRANT OPTION;

GRANT ALL PRIVILEGES ON *.* TO root@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;