Delete unused templates

Elastic Stack Elasticsearch
1

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

2

Oh wow, that's pretty huge. It's likely timing out due to cluster state updates being slow, but I don't know of an easy fix here.

Someone else will hopefully pop in with some better advice!

3

Thanks Mark. I am hoping, there is some workaround out there. If not, I may have to look at spinning a new cluster and moving to that instead.

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Safe to assume you adjusted the timeout parameters on the request to be longer?
I don't have anything good to add here, but based on what Mark said, and the fact that you have a small cluster, perhaps you can reduce the shards/replicas, shrink your cluster to a single node, then run it... maybe that would speed it up?

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