gistfile1.rb

require 'faraday'
require 'json'

conn = Faraday.new
response  = conn.get 'https://identity.api.rackspacecloud.com/v2.0/tokens' do |request|
  request.headers['Content-Type'] = 'application/json'
  request.body = "{\"auth\": {\"RAX-KSKEY:apiKeyCredentials\": { \"username\": \"littlebits\",\"apiKey\": \"96c884d7223f4b85bd3d12c72e7523af\"}}}"
end

res_json  = JSON.parse response.body
token = res_json['access']['token']['id’]

response = conn.post "https://ord.databases.api.rackspacecloud.com/v1.0/834500/backups" do |request|
  request.headers['Content-Type'] = 'application/json'
  request.headers['X-Auth-Token'] = token
  request.body =  '{ "backup":{ "description":”backup from DigitalOcean", "instance":"7c8a3fe4-8497-4f20-b09b-fd529c5c7c5a", "name”:”Backup from DigitaOcean via API" } }’
end