Symptoms

Parallels Plesk shows the following errors if you browse the Control Panel.

ERROR: Zend_Db_Statement_Exception
SQLSTATE[HY000]: General error: 1 Can't create/write to file '/tmp/#sql_de3_0.MYI' (Errcode: 13)


 0: Pdo.php:238
     Zend_Db_Statement_Pdo->_execute(array)
 1: Statement.php:283
     Zend_Db_Statement->execute(array)
 2: Abstract.php:433
     Zend_Db_Adapter_Abstract->query(string 'DESCRIBE `sessions`', array)
 3: Abstract.php:230
     Zend_Db_Adapter_Pdo_Abstract->query(string 'DESCRIBE `sessions`')
 4: Mysql.php:136
     Zend_Db_Adapter_Pdo_Mysql->describeTable(string 'sessions', NULL null)
 5: Abstract.php:696
     Zend_Db_Table_Abstract->_setupMetadata()
 6: Abstract.php:722
     Zend_Db_Table_Abstract->_getCols()
 7: Abstract.php:762
     Zend_Db_Table_Abstract->_setupPrimaryKey()
 8: DbTable.php:517
     Zend_Session_SaveHandler_DbTable->_getPrimary(string '63bb27967cbeefc660a97b01a78f9034')
 9: DbTable.php:316
     Zend_Session_SaveHandler_DbTable->read(string '63bb27967cbeefc660a97b01a78f9034')
 10: SaveHandler.php:26
     CommonPanel_Session_SaveHandler->read(string '63bb27967cbeefc660a97b01a78f9034')
 11: :
     session_start()
 12: class.Session.php:150
     Session->Session()
 13: auth.php3:183

Or Parallels Plesk is not accessible with the following error:

ERROR: Zend_Db_Adapter_Exception: SQLSTATE[HY000] [2002] No such file or directory

and MySQL service cannot start:

# service mysqld start
MySQL Daemon failed to start.
Starting mysqld:                                           [FAILED]

Cause

  • '/tmp' partition has run out of space and the file can't be created
  • For some reason the 'mysqld' process cannot write to the directory mentioned in the error message because of permission problems. Invalid SELinux settings can also be a reason of such error.

Resolution

Make sure that the /tmp directory is granted full permissions.

# ls -ld /tmp
drwxrwxrwt 3 root root 12288 Mar 16 22:49 /tmp

Full permissions can be granted to the /tmp directory with the following command:

# chmod 1777 /tmp

Start MySQL service after fixing the permissions.

# service mysqld start

Internal content