Hi Colin, Thanks for the KIP.
1. Can you talk about how the set of ACLs needed to authorize controllers and brokers will get bootstrapped? I am particularly interested in how we are going to configure a new cluster so that the controllers nodes can authorize each other's requests to establish quorum. After a quorum is established, I am interested in how the user would make sure that new brokers will get authorize against the controllers for requests like "register broker" and "fetch". thanks, -Jose
