Hi, I have the following setup on red hat linux,
Fluentd (data collector) --> Elasticsearch (Indexing data) --> Kibana (Visualization)
Fluentd is collecting data from some resource which I want to reform. Say for example I am getting students information from fluentd like student information and marks in subjects. I want to create new fields like total marks, percentage and grade along with existing fields.
I will be using these fields in kibana to create graphs.
Where and how to create these custom fields?
Where should calculation of these fields should happen?