We are using Craft on Heroku and wants to use S3. The problem is that we want to use a Heroku element (buckateer) as a middleman. Buckateer only gives you an IAM user without listbuckets permissions. So you get "S3::listBuckets(): [AccessDenied] Access Denied". Is there a smart and easy way to set the bucket manually without going into the core files?

2 Answers 2


Sorry, there's not a clean way of doing that in Craft 2. What you can do, though, is manually create an entry for the Asset Source in the craft_assetsources table in database.

This is improved in Craft 3, so, yay!


I found a solution that lets you overwrites the core file S3.php without touching the core files.

By adding this snippet to config/general.php

// S3 override  

return array(  

And duplicate the S3.php file and add it to the plugins folder you can make the needed changes.

  • That is clever. Not clean, but definitely clever. Feb 22, 2017 at 11:10
  • I know, but as long as it works and is simple for the front-end developers here.
    – Petter
    Feb 22, 2017 at 15:57

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