How to move data from cold to warm tier

Elastic Stack Elasticsearch
1

Hi
I need to remove cold data tiers, then in this action I thought about shifting data tier from cold to warm? How I can handle such case?

2

is the only one way to re-locate such data index ? when I need to remove data cold?

change from:

{
...
    "routing": {
        "allocation": {
            "include": {
                "_tier_preference": "data_cold,data_warm,data_hot"
            }
        }
    }
...
}

PUT /my-index/_settings
{
    "routing": {
      "allocation": {
        "include": {
            "_tier_preference": "data_warm,data_hot"
        }
      }
    }
}
3

Yep, that should work.

4

and after that I need to reroute that index for relocate?

5

then I've also triggered

PUT my-index*/_settings
{
  "index.routing.allocation.require.data": "warm"
}

but when I'm checking through dev tool

GET /_cat/recovery?active_only=true

It doesn't work as I expected?

6

for example this index exists on data cold tier

{
  "logstash-data-2022.05.14" : {
    "settings" : {
      "index" : {
        "lifecycle" : {
          "name" : "data_policy"
        },
        "routing" : {
          "allocation" : {
            "include" : {
              "_tier_preference" : "data_warm,data_hot"
            },
            "require" : {
              "data" : "warm"
            }
          }
        },
        "refresh_interval" : "15s",
        "number_of_shards" : "15",
        "translog" : {
          "sync_interval" : "15s",
          "durability" : "async"
        },
        "provided_name" : "logstash-hss40-2022.05.14",
        "creation_date" : "1652486556519",
        "priority" : "0",
        "number_of_replicas" : "0",
        "uuid" : "WtbatoheRgm85R8Ax0hvvg",
        "version" : {
          "created" : "8010099"
        }
      }
    }
  }
}
7

Are you sure warm is right and not data_warm?

8

You can check Implementing Hot-Warm-Cold in Elasticsearch with Index Lifecycle Management | Elastic Blog

In this request I’m referring to tier so “warm” “hot” “cold” should be right