This document talks about encrypting sensitive data in watcher. It only covers the configuration of the cluster but says nothing about how to actually encrypt the data or identify which data is sensitive.
We need to use the HTTP Input to call a secured endpoint and we want to make sure the username password is encrypted so that those viewing the watch data cannot easily be seen by them. In the future we'd like to encrypt other sensitive data for the same reasons.
I've searched the web and the documentation and i've not yet found how to do this.
So basically the question is, how does this work? I suspect there is more to it than just configuring watcher. I also suspect that this can be done in other areas of Elasticsearch besides watcher.