config/filesystems.php

<?php

return [

    /*
    |--------------------------------------------------------------------------
    | Default Filesystem Disk
    |--------------------------------------------------------------------------
    |
    | Here you may specify the default filesystem disk that should be used
    | by the framework. A "local" driver, as well as a variety of cloud
    | based drivers are available for your choosing. Just store away!
    |
    | Supported: "local", "ftp", "sftp", s3"
    |
    */

    'default' => env('DEFAULT_FILESYSTEM', 'public'),

    /*
    |--------------------------------------------------------------------------
    | Default Cloud Filesystem Disk
    |--------------------------------------------------------------------------
    |
    | Many applications store files both locally and in the cloud. For this
    | reason, you may specify a default "cloud" driver here. This driver
    | will be bound as the Cloud disk implementation in the container.
    |
    */

    'cloud' => env('FILESYSTEM_CLOUD', 's3'),

    /*
    |--------------------------------------------------------------------------
    | Filesystem Disks
    |--------------------------------------------------------------------------
    |
    | Here you may configure as many filesystem "disks" as you wish, and you
    | may even configure multiple disks of the same driver. Defaults have
    | been setup for each driver as an example of the required options.
    |
    */

    'disks' => [

        'local' => [
            'driver' => 'local',
            'root' => storage_path('app'),
        ],

        'public' => [
            'driver' => 'local',
            'root' => storage_path('app/public'),
            'visibility' => 'public',
        ],

        's3' => [
            'driver' => 's3',
            'key' => env('AWS_ACCESS_KEY_ID', env('AWS_KEY')),
            'secret' => env('AWS_SECRET_ACCESS_KEY', env('AWS_SECRET')),
            'region' => env('AWS_DEFAULT_REGION', env('AWS_REGION')),
            'bucket' => env('AWS_BUCKET'),
            'url' => env('AWS_URL'),
            'endpoint' => env('AWS_ENDPOINT', env('AWS_SERVER', '') ? 'https://'.env('AWS_SERVER') : null),
            'cache' => [
                'store' => env('S3_CACHE_STORE', env('CACHE_DRIVER', 'file')),
                'expire' => env('S3_CACHE_EXPIRE', 600),
                'prefix' => env('S3_CACHE_PREFIX', 's3'),
            ],
        ],

    ],

    /*
    |--------------------------------------------------------------------------
    | Symbolic Links
    |--------------------------------------------------------------------------
    |
    | Here you may configure the symbolic links that will be created when the
    | `storage:link` Artisan command is executed. The array keys should be
    | the locations of the links and the values should be their targets.
    |
    */

    'links' => [
        public_path('storage') => storage_path('app/public'),
    ],

];