MySQL does not start after an Plesk update (14-March, 2017)

Note: article describes the issue caused by MySQL update from Atomic repository, make sure you have Atomic repository enabled before applying fix:

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After update MySQL cannot be started. In Plesk the following error message is shown:

    Error in Plesk:
    ERROR: PleskFatalException
    Unable to connect to database: mysql_connect() [function.mysql-connect]: No such file or directory

    0: common_func.php3:153
    psaerror(string 'Unable to connect to database: mysql_connect() [function.mysql-connect]: No such file or directory')
    1: auth.php3:116


    ERROR: Zend_Db_Adapter_Exception: SQLSTATE[HY000] [2002] No such file or directory
    Additionally, an exception has occurred while trying to report this error: Zend_Exception
    No entry is registered for key 'translate' (Abstract.php:144)
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    ERROR: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000] [2002] No such file or directory' in /usr/local/psa/admin/externals/Zend/Db/Adapter/Pdo/Abstract.php:129 Stack trace: #0 /usr/local/psa/admin/externals/Zend/Db/Adapter/Pdo/Abstract.php(129): PDO->__construct('mysql:dbname=ps...', 'admin', '$AES-128-CBC$Zm...', Array) #1 /usr/local/psa/admin/externals/Zend/Db/Adapter/Pdo/Mysql.php(111): Zend_Db_Adapter_Pdo_Abstract->_connect() #2 /usr/local/psa/admin/externals/Zend/Db/Adapter/Abstract.php(460): Zend_Db_Adapter_Pdo_Mysql->_connect() #3 /usr/local/psa/admin/externals/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('select param, v...', Array) #4 /usr/local/psa/admin/plib/Db/Adapter/Pdo/Mysql.php(30): Zend_Db_Adapter_Pdo_Abstract->query('select param, v...', Array) #5 /usr/local/psa/admin/plib/db.php(36): Db_Adapter_Pdo_Mysql->query('select param, v...') #6 /usr/local/psa/admin/plib/db.php(212): db_query('select param, v...', false) #7 /usr/local/psa/admin/plib/Plesk/Mode.php(4 (Abstract.php:144)

There are no records in /var/log/mysqld.log


Atomic issued broken mysql package to their repositories. During updates installation mysql package gets updated, but required directory /var/lib/mysql-files is not created.

This issue has been fixed by Atomic in 5.5.54-1199 version of mysql-server package. Update the package to the latest version:

# yum update mysql-server

If no packages are marked for update, clean yum cache:

# yum clean all

# yum update mysql-server