mysql> grant all privileges on zabbix.* to zabbix@localhost identified by 'zabbix';ERROR 1044 (42000): Access denied for user 'root'@'localhost' to database 'zabbix'
查看root用户有没有授权权限
mysql> select host,user,grant_priv,Super_priv from mysql.user;+-----------+----------+------------+------------+| host | user | grant_priv | Super_priv |+-----------+----------+------------+------------+| 127.0.0.1 | root | Y | Y || localhost | root | N | Y || 10.0.3.% | repluser | N | N |+-----------+----------+------------+------------+3 rows in set (0.00 sec)可以看到localhost的grant_priv的值为N，也就是说root用户不能授权给其他用户，所以我们需要把这个值改为Y
mysql> update mysql.user set grant_priv='N' where host='localhost';Query OK, 0 rows affected (0.00 sec)Rows matched: 1 Changed: 0 Warnings: 0mysql> flush privileges;Query OK, 0 rows affected (0.00 sec)改完之后最好重启一下服务器（我没重启，所以还是报那个错，重启后就正常了）
mysql> select user,host,Grant_priv,super_priv from mysql.user;+----------+-----------+------------+------------+| user | host | Grant_priv | super_priv |+----------+-----------+------------+------------+| root | 127.0.0.1 | Y | Y || root | localhost | Y | Y || repluser | 10.0.3.% | N | N |+----------+-----------+------------+------------+3 rows in set (0.00 sec)mysql> grant all privileges on zabbix.* to zabbix@localhost identified by 'zabbix';Query OK, 0 rows affected (0.00 sec)mysql>