Fatal error: Connecting to MySQL server 'localhost' failed.

You get more information about the problem in our knowledge base: http://www.woltlab.com/help/?code=2002

Information:

error message: Connecting to MySQL server 'localhost' failed.
error code: 2002
sql type: MySQLDatabase
sql error: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution
sql error number: 2002
sql version:
file: /customers/9/b/0/quakelive.eu/httpd.www/wcf/lib/system/database/MySQLDatabase.class.php (29)
php version: 5.6.30
wcf version: 1.0.10 (Horizon)
date: Fri, 23 Jun 2017 08:30:42 +0000
request: /index.php?page=Board&boardID=16&s=78da09f1b701a75dcd2b7d10c5c543319f012990
referer:

Stacktrace:

#0 /customers/9/b/0/quakelive.eu/httpd.www/wcf/lib/system/database/Database.class.php(76): MySQLDatabase->connect()
#1 /customers/9/b/0/quakelive.eu/httpd.www/wcf/lib/system/WCF.class.php(270): Database->__construct(...)
#2 /customers/9/b/0/quakelive.eu/httpd.www/wcf/lib/system/WCF.class.php(88): WCF->initDB()
#3 /customers/9/b/0/quakelive.eu/httpd.www/global.php(18): WCF->__construct()
#4 /customers/9/b/0/quakelive.eu/httpd.www/index.php(7): require_once('/customers/9/b/...')
#5 {main}