[PDOException] 
SQLSTATE[HY000] [2002] Connection refused (2002)
/var/www/clients/client0/web4/web/local/php_interface/fastpdo.php:25
#0: PDO->__construct(string, string, string, array)
	/var/www/clients/client0/web4/web/local/php_interface/fastpdo.php:25
#1: FPDO::connect()
	/var/www/clients/client0/web4/web/local/php_interface/fastpdo.php:44
#2: FPDO::query(string, string, array)
	/var/www/clients/client0/web4/web/local/php_interface/core.class.php:33
#3: CORE::detectSearchEngine()
	/var/www/clients/client0/web4/web/local/php_interface/init.php:203
#4: include_once(string)
	/var/www/clients/client0/web4/web/bitrix/modules/main/include.php:241
#5: require_once(string)
	/var/www/clients/client0/web4/web/bitrix/modules/main/include/prolog_before.php:14
#6: require_once(string)
	/var/www/clients/client0/web4/web/bitrix/modules/main/include/prolog.php:10
#7: require_once(string)
	/var/www/clients/client0/web4/web/bitrix/header.php:1
#8: require(string)
	/var/www/clients/client0/web4/web/ideas/index.php:2
#9: include_once(string)
	/var/www/clients/client0/web4/web/bitrix/modules/main/include/urlrewrite.php:162
#10: include_once(string)
	/var/www/clients/client0/web4/web/bitrix/urlrewrite.php:2