title: How to visualize data from a Postgresql in Kibana?
body: <p>I need to some visualize data from a Postgresql in Kibana. I have also ElasticSearch installed just in case. So how visualize data from a Postgresql in Kibana? Of course, I don't need the whole database, but only data returned by a custom sql query. 
  Also, I want it to be as simple as possible, I wouldn't like to use libraries I really don't need to use.</p>