exception 'PDOException' with message 'SQLSTATE[HY000] [2005] Unknown MySQL server host 'rds-mysql-server.crpxe2c6dpip.ap-northeast-1.rds.amazonaws.com' (-2)' in /home/nokioo/nokioo.jp/public_html/develop/fuelphp/core/classes/database/pdo/connection.php:96
Stack trace:
#0 /home/nokioo/nokioo.jp/public_html/develop/fuelphp/core/classes/database/pdo/connection.php(96): PDO->__construct('mysql:host=rds-...', 'nokioo', 'VeG4ciasOyxaDeU...', Array)
#1 /home/nokioo/nokioo.jp/public_html/develop/fuelphp/core/classes/database/pdo/connection.php(191): Fuel\Core\Database_PDO_Connection->connect()
#2 /home/nokioo/nokioo.jp/public_html/develop/fuelphp/core/classes/database/query.php(287): Fuel\Core\Database_PDO_Connection->query(1, 'SELECT * FROM `...', false)
#3 /home/nokioo/nokioo.jp/public_html/develop/fuelphp/app/classes/model/office.php(80): Fuel\Core\Database_Query->execute()
#4 /home/nokioo/nokioo.jp/public_html/develop/fuelphp/app/classes/controller/index.php(10): Model_Office::get_all()
#5 [internal function]: Controller_Index->action_index('18')
#6 /home/nokioo/nokioo.jp/public_html/develop/fuelphp/core/classes/request.php(444): ReflectionMethod->invokeArgs(Object(Controller_Index), Array)
#7 /home/nokioo/nokioo.jp/public_html/develop/index.php(53): Fuel\Core\Request->execute()
#8 {main}

Next exception 'Fuel\Core\Database_Exception' with message 'SQLSTATE[HY000] [2005] Unknown MySQL server host 'rds-mysql-server.crpxe2c6dpip.ap-northeast-1.rds.amazonaws.com' (-2)' in /home/nokioo/nokioo.jp/public_html/develop/fuelphp/core/classes/database/pdo/connection.php:113
Stack trace:
#0 /home/nokioo/nokioo.jp/public_html/develop/fuelphp/core/classes/database/pdo/connection.php(191): Fuel\Core\Database_PDO_Connection->connect()
#1 /home/nokioo/nokioo.jp/public_html/develop/fuelphp/core/classes/database/query.php(287): Fuel\Core\Database_PDO_Connection->query(1, 'SELECT * FROM `...', false)
#2 /home/nokioo/nokioo.jp/public_html/develop/fuelphp/app/classes/model/office.php(80): Fuel\Core\Database_Query->execute()
#3 /home/nokioo/nokioo.jp/public_html/develop/fuelphp/app/classes/controller/index.php(10): Model_Office::get_all()
#4 [internal function]: Controller_Index->action_index('18')
#5 /home/nokioo/nokioo.jp/public_html/develop/fuelphp/core/classes/request.php(444): ReflectionMethod->invokeArgs(Object(Controller_Index), Array)
#6 /home/nokioo/nokioo.jp/public_html/develop/index.php(53): Fuel\Core\Request->execute()
#7 {main}