Rails 3. getting Errno::EACCES Permission Denied when uploading files on production

The app works fine in development but in production I get Errno::EACCES Permission Denied error when I try to upload a file using Carrierwave. I'm sure it has something to do with permissions. How can I set the permissions to allow file uploads?


def store_dir

def cache_dir


chmod -R 777 PATH_TO_APP/uploads 
chmod -R 777 PATH_TO_APP/tmp 

As far as I know there are two things that can be going on here:

1) The directory you're saving your images to doesn't have read/write privileges for other users.

To fix:


$ cd [my_app]
$ chmod -R 666 tmp
$ chmod -R 666 public/uploads

or if you're saving your images in an private directory:

$ chmod -R 666 private/uploads

We're using 666 over 777. 666 allows read and write privileges to a directory, and carrierwave needs to write its images. 777 allows read, write privileges and for executable files to be executed! In other words, a nasty program could be uploaded to your server disguised as an image if you're using 777. Even though carrierwave's extension white-list solves this problem, you should always use 666 over 777.

2) You're not using double quoted strings in the store_dir method.

To fix:


class BaseUploader < CarrierWave::Uploader::Base
  # other methods removed for brevity

  def store_dir
    "#{Rails.root}/private/" # works perfectly. Many thanks to @RGB


Just want to point out how subtle this is. You need double quoted strings and Rails.root! I was doing this:

def store_dir
    Rails.root + '/private' # raises Errno::EACCES error

and it was not working at all. So subtle. The community should address this.

Uhm I have been having the same issue with a ubuntu server. Uploading a file with carrierwave and then trying to read it with roo (a gem for excel files).

Errno::EACCES in IngestionController#upload
Permission denied

Permissions have been chmod-ed to 777 on that directory and the file gets created ok. I believe the issues is when reading the store path.

excelx_file = params[:excel_file]
filex = MetadataUploader.new
workbook = Excelx.new("#{filex.store_path}") <- This is the actual line throwing the error.

Although everything works ok when executing the same app on my mac.

We need to grant permissions to access the required directory for the system root user

sudo chmod 777 -R your_project_directory_to_be_access

For security reasons, just keep in your mind:

chmod 777 gives everybody read, write and execute rights which for most problems is definitively too much.

Need Your Help

How do I start my Java program with more than one java agent?

jvm javaagents

I'm aware of how to start a java progam with a java agent:

When registering on a site through disqus also register this user own my own database

php javascript mysql disqus

So to be honest the title says what I'm after. I've searched and tried (nothing worth posting)