Question about Kibana and multi-indexes

Hi All,

I have a question about multi-indexes usage with Kibana

I have 4 kibana indexes (log-case1, log-case2, log-case3, log-case4) that contain the same data structure but of different origins.
I can search these indexes via a log-* search

How to display the original index name in Kibana graphics (log-case1, log-case2...) ?

None of the fields preceded by _ (like _index) are available in visualisation.

Any help would be highly appreciated

The reason those fields aren't displayed it because they can't be aggregated on. If you would like to aggregate on them you need to either add a field to your document that reflects that value, or setup your mappings in a way that the _index can be aggregated on.