Thanks. Good to know, we may re-visit things. Elastic itself is a pain to manage, and with data growth we're re-examining what we get from it. For time series data, there is an element of "why?" about it: PostGres as a time series JSON blob store, might work better for us. The sharding by time is easy to understand and it has more affinity to the underlying host OS. Elastic, you have to understand a LOT of moving parts to make it work well (or be a Kubernetes expert, or pay somebody else) -if you already have an investment in PG then its possibly better use of your time.
But its good to know the interface got some eyeballs. I retract the accusation of abandonware.