Hi what would be easiest way to clean up all the pinot configs for a cluster in Zookeeper?

Do you want to keep the cluster or erase all pinot tables from the cluster? For most parts, if you remove a table, pinot will cleanup everything belonging to that table. Also if you remove a server. The basic helix clsuter will remain, which you may want to drop (after making sure you really want to do that)

I would like to erase the whole cluster

I would say, be safe. (1) Drop all tables (make sure the segments go out of exernalview) (2) Drop all instances (4) Stop all pinot controller/broker/server instances (4) Use helix command to remove the cluster (or remove the top level cluster znode using zookeeper tools)

How do I do that using Helix?