Freeze

Phases allowed: cold.

Freezes an index to minimize its memory footprint.

Freezing an index closes the index and reopens it within the same API call. This means that for a short time no primaries are allocated. The cluster will go red until the primaries are allocated. This limitation might be removed in the future.

Options

None.

Example

PUT _ilm/policy/my_policy
{
  "policy": {
    "phases": {
      "cold": {
        "actions": {
          "freeze" : { }
        }
      }
    }
  }
}