Need a bit of clarity on .kibana indices

Elastic Stack Kibana
1

When I was looking around I saw two kibana indices, .kibana-6 and .kibana_7.
.kibana alias was pointing to .kibana_7.

How does this work? My google skills is not good enough to find details.

Background:
I recently upgraded kibana to 6.5.1. Then rolled it back to older more stable version. Are these indices created during the upgrade process?

2

Yes, because Kibana does some automatic reindexing based on changes that need to happen. So we use the alias and have multiple index versions underneath that.

3

Got it.
Just out of curiosity, does older version of .kibana index has any use, something like rolling back etc? Or can it be deleted?

4

I don't know much beyond that sorry! Hopefully someone else can add some clarity :slight_smile:

5

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