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<b>Warning</b>:  mysqli_connect(): php_network_getaddresses: getaddrinfo for rdb failed: Temporary failure in name resolution in <b>/var/www/html/includes/config_db.php</b> on line <b>17</b><br />
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<b>Fatal error</b>:  Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for rdb failed: Temporary failure in name resolution in /var/www/html/includes/config_db.php:17
Stack trace:
#0 /var/www/html/includes/config_db.php(17): mysqli_connect('rdb', 'php-skripte', Object(SensitiveParameterValue), 'test_export')
#1 /var/www/html/includes/config.php(12): require_once('/var/www/html/i...')
#2 /var/www/html/includes/top.php(2): require_once('/var/www/html/i...')
#3 /var/www/html/index.php(313): require_once('/var/www/html/i...')
#4 {main}
  thrown in <b>/var/www/html/includes/config_db.php</b> on line <b>17</b><br />