tempo is a lightweight cron-as-a-service implementation. It consists of two components, the tempo-api which is a webserver that exposes a RESTful webservice for adding and removing cron-jobs, and tempo-worker which is responsible for performing the actual task.

1. tempo-api receives a request to create a new cron task, writes task to the DB, then updates its crontab to fire off the cron job at the appropriate time.
2. When the designated time is reached, cron will execute tempo-enqueue which will add a new task to the tempo task queue.
3. tempo-worker will pull jobs from this task queue and then execute the requested action. Actions are functions defined in the tempo.actions module.

1. Start the tempo-api on a machine:

   tempo-api

2. On a machine that will act as the worker, source the novarc for worker:

   . novarc

   This is needed because many of the actions that the tempo-worker will run will ultimatly shell out to a python-novalcient command.

3. On that same machine, Start the `tempo-worker`:

   tempo-worker