Yandex::Disk gem

# authorize via oauth access token...
disk = Yandex::Disk::Client.new(:access_token => 'YOUR_ACCESS_TOKEN')

# ...or use login password for authorization
disk = Yandex::Disk::Client.new(:login => 'me', :password => 'secret')

# to upload file to Yandex.Disk
disk.put('path/to/local/file', '/path/to/remote/file') # returns `true` if everything is ok

# to download file to Yandex.Disk
res = disk.get('/path/to/remote/file') # => res.body will contain file

# to make dir (only creates last part of path)
disk.mkdir('/path/to/remote/dir') # returns `true` if everything is ok

# to make full path
disk.mkdir_p('/path/to/remote/dir')

# remote file operations:

# copy file/dir
disk.copy('/path/to/remote/file/or/dir', '/path/to/new/remote/file/or/dir')
# move file/dir
disk.move('/path/to/remote/file/or/dir', '/path/to/new/remote/file/or/dir')
# delete file/dir
disk.delete('/path/to/remote/file/or/dir') # returns `true` if everything is ok

# property update operations:

# to make folder or file public
disk.make_public('/path/to/remote/dir/or/file') # returns hash with public url `=> { :public_url => "https://yadi.sk/i/B98Qjxxx3S5QJc" }` if everything is ok

# to make folder or file private
disk.make_private('/path/to/remote/dir/or/file') # returns true if everything is ok

# to get quotas
disk.space # returns hash like { :quota_available_bytes => 2488943615, :quota_used_bytes => 2488943615 }

# to get dir contents
disk.list('/') # returns array with hashes like [{:href=>"/",:resourcetype=>:collection,:getlastmodified=><DateTime>,:getcontentlength=>0,:displayname=>"disk",:creationdate=><DateTime>},{:href=>"/readme.pdf",:getlastmodified=><DateTime>,:getcontentlength=>455833,:displayname=>"readme.pdf",:creationdate=><DateTime>}]

require 'yandex/disk/backup/storage'

Backup::Model.new(:my_backup, 'Description for my_backup') do
  split_into_chunks_of 50

  database PostgreSQL do |db|
    db.name     = 'pg_db_name'
    db.username = 'username'
    db.password = 'password'
  end

  compress_with Gzip

  store_with Yandex::Disk do |disk|
    disk.access_token = 'YOUR_ACCESS_TOKEN'
    disk.path         = '/backups/'
    disk.keep         = 5
  end
end