I have 1TB SSD on my notebook with 15GB free space at the moment. Although ES node data take only 130MB, all indexes inluding the .kibana are marked as read-only and any further work is blocked.
I would consider that as a design flaw. Why is the disk watermark not related to the volume of the ES data, i.e. 130MB vs 15 GB?
Changing flags in the following way does not help because the ES returns them back in a few seconds.