Great news! Although we use Elastic cloud on AWS, this is great addition to open source. Now real question is whether Elastic team did this to stop Amazon Opensource elastic stack (see here https://opendistro.github.io/for-elasticsearch/).

This looks like early contention plan to fields ELK users from going to amazon.

Good news and a welcome addition. Too many elasticsearch clusters have been completely exposed and have been leaking data.

In our case we've had elasticsearch container behind our firewall only exposed to our application servers behind a reverse proxy. Did the trick.

Is it also opensource? Or just free?