We have a 3node ES cluster, and free disk space has become an issue over the weekend. We don't have the ability at the moment to add any more capacity, so we're looking at what we can remove.
We've audited our indices and set them to delete, and our expectation was that the disk apace would free up automatically, but it did not.
As a next step, we restarted ES on one of the nodes, and this also made no difference,
Lastly, we ran a forcemerge (per this article, and many like it), and this has also not made a difference.
Can anyone offer any guidance on how we can force a cleanup job of the deleted items, please?