I originally described this feature on discuss here. I was asked to create an issue for this feature.

We've started setting up ILM in our Elastic Stack 6.6.1 cluster. I was wondering where ILM actions are logged. For example, if I setup ILM to delete certain indices older than 2 weeks, where can I see which indices where deleted?

Across our various clusters we have thousands of indices, and it would be nice to have a log of which logs are getting removed.