I have a data stream which is associated with an index template which create 3 shards per index daily. This is a time based indices which creates new index daily. We are approaching the maximum number of allowed shards in our cluster and hence we need to re index these existing data stream indices so that we can lower the number of shards . We are not afforded to spin up new nodes. The indicies in this data stream is very low in size and most of them in KBs.Could you please help with some options.
We have 3 master nodes and 3 data nodes in our cluster.