How to reindex data in Elasticsearch without actually changing index names?

Hi Bernt. Thanks for your reply.

So right now I have indices with the names "project-2017.08", "project-2017.09", "project-2017.10". In the Kibana end the index looks like "project-*".

  • Do I need to create 3 new indices with the names "sample-project-2017.08_v1" , "sample-project-2017.09_v1" , "sample-project-2017.10_v1" and point alias to the new indices?

  • If so, what about the next month's data? I am assuming I need to declare index template with required mapping so that next month's data will be distributed to project-2017.11 without any aliases.

I am totally confused how things work for monthly based indices. Please let me know if this is the correct process.

Thanks for the support