Hot-cold setup

Elastic Stack Elasticsearch
1

I have running cluster, five data node with
node.attr.box_type: hot

now I would like to introduce cold storage as well
I have a node which I will be using as cold storage
node.attr.box_type: cold

but most all my index in running cluster has no ilm as they are small or under testing or what not.

how does cold node will behave when I add that in to mix?
will it start rebalancing indexes?
or will it wait for ilm to kick in

do I have to have index pattern (policy) for each index? to tell to go HOT or cold?

2

bump

3

If your indices don't have allocation filter in them, either manually added or via ILM, then when you add the new nodes the existing shards will be balanced onto them.

4

something like this ?

{
  "template" : "*",
  "settings" : {
           "index.routing.allocation.require.box_type": "hot"
    }
}

and then on individual ILM policy use col in to cold phase