Connecting to External Sphinx Server

Anybody have any luck installing the Sphinx server on a separate server? I installed Sphinx on an external MySQL database server. However, I am not able to run:

$ bundle exec rake ts:index

Getting the following error:
sh: 1: indexer: not found

Do I need to install the sphinx server on the app server as well in order to run the indexer? Or install the app on the Sphinx server?