PDO::__construct() [pdo.--construct]: [2002] Connection timed out (trying to connect via tcp://172.16.0.100:3306) 
in '/var/www/domains/stats.komola.de/libs/Zend/Db/Adapter/Pdo/Abstract.php' at the line 129

#0  Piwik_ErrorHandler(2, PDO::__construct() [pdo.--construct]: [2002] Connection timed out (trying to connect via tcp://172.16.0.100:3306), /var/www/domains/stats.komola.de/libs/Zend/Db/Adapter/Pdo/Abstract.php, 129, Array ([dsn] => mysql:host=172.16.0.100;dbname=piwik;port=3306,[q] => ))
#1  PDO->__construct(mysql:host=172.16.0.100;dbname=piwik;port=3306, piwik, UuI"xAA=NZ,~1Sb[I6aVR6.OZZ3?:ys-YaaFrm_76Wgrn, Array ()) called at [/var/www/domains/stats.komola.de/libs/Zend/Db/Adapter/Pdo/Abstract.php:129]
#2  Zend_Db_Adapter_Pdo_Abstract->_connect() called at [/var/www/domains/stats.komola.de/libs/Zend/Db/Adapter/Pdo/Mysql.php:96]
#3  Zend_Db_Adapter_Pdo_Mysql->_connect() called at [/var/www/domains/stats.komola.de/core/Db/Pdo/Mysql.php:30]
#4  Piwik_Db_Pdo_Mysql->getConnection() called at [/var/www/domains/stats.komola.de/core/Piwik.php:1685]
#5  Piwik::createDatabaseObject() called at [/var/www/domains/stats.komola.de/core/FrontController.php:219]
#6  Piwik_FrontController->init() called at [/var/www/domains/stats.komola.de/index.php:103]