Issue

The same code, on almost identical servers, fails locally and on production, however works on our staging server. When we attempt to interact with an item in a bucket, we get an Error retrieving credentials....

• Both servers, staging and production, are deployed by Envoyer and provisioned by Forge to AWS EC2 instances.
• Both instances hit the same bucket with the same bucket policy.
• .env settings are same for all, minus the server name and debugging

Error on production:

Aws\Exception\CredentialsException
Error retrieving credentials from the instance profile metadata server. (cURL error 28: Connection timed out after 1003 milliseconds (see http://curl.haxx.se/libcurl/c/libcurl-errors.html))

Server settings

Staging

• Ubuntu 16.04.2 LTS on AWS
• PHP 7.1.3-3
• NPM 3.10.10
• Node v6.10.1

Production

• Ubuntu 16.04.1 LTS on AWS EC2
• PHP 7.1.6-1
• npm 3.10.10
• Node v6.10.1

Composer.json packages

"laravel/framework": "5.4.*",       // 5.4.25
"aws/aws-sdk-php-laravel": "~3.0",  // 3.1.0
"guzzlehttp/guzzle": "~6.0",        // 6.2.3

Code sample

function getPhoto($personID)
{
    $contents       = '';
    $id             = $personID;
    $cloudFront     = env('AWS_CLOUDFRONT_PHOTO'); // d212rosgvhtylp.cloudfront.net
    $fileKey        = filePath($id) . '_t.jpg'; // 9ae299a1990e79d62f07c28bb60ecf6f_t.jpg
    $fileURL        = $cloudFront . '/' . filePath($id) . '_t.jpg'; // d212rosgvhtylp.cloudfront.net/9ae299a1990e79d62f07c28bb60ecf6f_t.jpg
    // check if in remote storage then get contents
    $contents = Storage::disk('s3photo')->get($fileKey); /* ****** FAILS HERE ****** */
    // stream bioPhoto
    header('Content-Type: image/jpeg');
    echo $contents;
}