# File lib/deltacloud/drivers/ec2/ec2_driver.rb, line 259
        def reboot_instance(credentials, instance_id)
          ec2 = new_client(credentials)
          if ec2.reboot_instances([instance_id])
            instance(credentials, :id => instance_id)
          else
            raise Deltacloud::BackendError.new(500, "Instance", "Instance reboot failed", "")
          end
        end