salt call should be enough, done serially, context:
16:38 <^d> godog: I wonder if we could come up with some script (using salt maybe?) that could make it completely
automated?
16:38 <^d> Or at least very hands-off
16:38 <godog> ^d: we most certainly can, haven't got around it but basically yeah a "serial salt" call would do it
16:38 <^d> Yeah, that's my thought
16:39 <^d> es-tool does the hard work, so salt could just call that probably
16:39 <godog> yep, one thing to think about is how to safely stop salt so that it simply doesn't go to the next host
and call es-tool
16:39 <godog> and the next, and the next