Hi,
we just migrated from 5.0 to 5.5. Nearly everything went well. But we can't
access one particular table.
Automysqlback 3.0 says: mysqldump: Got error: 1142: SELECT,LOCK TABL command
denied to user 'backup'@'localhost' for table 'cond_instances' when using LOCK
TABLES.
root has these rights:
+----------------------------------------------------------------------------------------------------------------------------------------+
| Grants for root@localhost
|
+----------------------------------------------------------------------------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY PASSWORD
'*948BD740C15428999D549B9632F3C432415E93A4' WITH GRANT OPTION |
| GRANT SELECT, LOCK TABLES ON `performance_schema`.* TO 'root'@'localhost'
WITH GRANT OPTION |
| GRANT SELECT ON `vectordb%`.* TO 'root'@'localhost'
|
| GRANT USAGE ON `performance_schema`.`cond_instances` TO 'root'@'localhost'
WITH GRANT OPTION |
| GRANT PROXY ON ''@'' TO 'root'@'localhost' WITH GRANT OPTION
|
+----------------------------------------------------------------------------------------------------------------------------------------+
backup has these rights:
+----------------------------------------------------------------------------------------------------------------------------------------+
| Grants for backup@localhost
|
+----------------------------------------------------------------------------------------------------------------------------------------+
| GRANT SELECT, LOCK TABLES, SHOW VIEW ON *.* TO 'backup'@'localhost'
IDENTIFIED BY PASSWORD '*1827DC630AAEB1E997DB2B212CC94EFD9C431555' |
| GRANT SELECT, LOCK TABLES ON `performance_schema`.* TO 'backup'@'localhost'
|
| GRANT SELECT ON `vectordb%`.* TO 'backup'@'localhost'
|
+----------------------------------------------------------------------------------------------------------------------------------------+
If I try to specify (as root) exactly the select and lock tables right to user
backup, I get the following error:
mysql> grant select, lock tables on performance_schema.cond_instances to
'backup'@'localhost';
ERROR 1142 (42000): SELECT,GRANT,LOC command denied to user 'root'@'localhost'
for table 'cond_instances'
What I understood is that the usage right for root on
performance_schema.cond_instances means "no rights".
Trying to revoke seems to work:
mysql> revoke usage on performance_schema.cond_instances from
'root'@'localhost';
Query OK, 0 rows affected (0.00 sec)
But the usage right remains, it does not disappear.
How can I grant these rights to user backup ?
Thanks for any hint.
Bernd
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