How to control how the indices distribute its shards to the data node?

Elastic Stack Elasticsearch
1

Hi all
I have now a total of 4 data node, 1 i just recently added to the cluster. So now some of the indices in the cluster are moving its shard to that new node that i installed. but some how they are not evently distributed. For example, there is an index that i config with 12 shard, so i imagine that each node now will have 3 shard in total, but they are not moving the way i wanted at all.
Is there a way for me to control how the indices will move it shard around or or some command that i can use to move the shard to i node that i want.

Thank in advance!

2

What is it doing then?

3

Well it seem like what happen to me just because the node was newly added to our cluster so the shard movement is a little bit off.
But still i want to be able to tell which shard is going to which node by hand since not all data node in my cluster have the same performance. i want the important shard to go to the high performance shard and the less important goes to the slower one
Is that possible?

4

You can use allocation filtering on the index level to do that - https://www.elastic.co/guide/en/elasticsearch/reference/7.6/shard-allocation-filtering.html