SQLSTATE[HY000] [2002] Connection timed out

Please check your server address and port number.

It was because the connection was trying to connect to port 8888, while needed to connect port 8889.

@MUNAZZIL - here is my ENV configuration and database configurations

DB_CONNECTION=mysql

DB_HOST=13.232.137.204

DB_PORT=3306

DB_DATABASE=l*******er

DB_USERNAME=r******r

DB_PASSWORD=o******d

'mysql' => [

        'driver' => 'mysql',

        'host' => env('DB_HOST', '127.0.0.1'),

        'port' => env('DB_PORT', '3306'),

        'database' => env('DB_DATABASE', 'forge'),

        'username' => env('DB_USERNAME', 'forge'),

        'password' => env('DB_PASSWORD', ''),

        'unix_socket' => env('DB_SOCKET', ''),

        'charset' => 'utf8mb4',

        'collation' => 'utf8mb4_unicode_ci',

        'prefix' => '',

        'prefix_indexes' => true,

        'strict' => true,

        'engine' => null,

    ],

You have mention above like this DB_HOST=13.232.137.204, in mysql host change as like below.

'mysql' => [

      'driver' => 'mysql',

    'host' => env('DB_HOST', '13.232.137.204'),

@MUNAZZIL - i tried this but same issue

'mysql' => [

        'driver' => 'mysql',

        'host' => env('DB_HOST', '13.232.137.204'),

        'port' => env('DB_PORT', '3306'),

        'database' => env('DB_DATABASE', 'l***********r'),

        'username' => env('DB_USERNAME', '*******er'),

        'password' => env('DB_PASSWORD', '***********'),

        'unix_socket' => env('DB_SOCKET', ''),

        'charset' => 'utf8mb4',

        'collation' => 'utf8mb4_unicode_ci',

        'prefix' => '',

        'prefix_indexes' => true,

        'strict' => true,

        'engine' => null,

    ],

have a look in this.

https://laravel.com/docs/5.6/configuration

php artisan down --allow=127.0.0.1 --allow=13.232.137.204

after that

php artisan up

I found the solution .

Problem from mysql .

have to comment bind address in

/etc/mysql/mysql.conf.d/mysqld.cnf

#bind-address=127.0.0.1

restart mysql sudo service mysql restart

add to your mysql server firewall the following rule:

sudo ufw allow from IP_FROM_YOU_CONNECT to any port 3306