We are on ES version 6.8.0. Due to an issue in our software, we ended up having 30k unused templates on a 3 node cluster. Deleting these one by one is really slow like each one is taking upto 2 minutes and some are timing out after 2 minutes. Any easy way to delete these unused templates? I tried a wild card delete and that doesn't seem to work and timeout as well.
Thanks in advance