SQLSTATE [HY000] [2002]连接在yii2中超时

Question

我正在尝试使用登录表单，并在表单提交时遇到此错误，我已经阅读了很多关于此问题的文章，但没有好的解决方案，下面是我的代码

Error message
Database Exception – yii\db\Exception
SQLSTATE[HY000] [2002] Connection timed out

配置文件

     <?php
return [
    'components' => [
    'db' => [
        'class' => 'yii\db\Connection',
        'dsn' => 'mysql:host=33.101.145.112;dbname=daju',
        'username' => 'root',
        'password' => '123456',
        'charset' => 'utf8',
    ],
    'mailer' => [
        'class' => 'yii\swiftmailer\Mailer',
        'viewPath' => '@common/mail',
        // send all mails to a file by default. You have to set
        // 'useFileTransport' to false and configure a transport
        // for the mailer to send real emails.
        'useFileTransport' => true,
    ],
],
];

我在远程服务器上，所以我使用我的远程主机，我可以解决这个问题吗？