PUT _ilm/policy/pfelk-ilm
{
  "policy": {
    "phases": {
      "hot": {
        "min_age": "0ms",
        "actions": {
          "rollover": {
            "max_size": "5gb",
            "max_age": "90d"
          },
          "set_priority": {
            "priority": 10
          }
        }
      },
      "warm": {
        "actions": {
          "set_priority": {
            "priority": 50
          }
        }
      },
      "cold": {
        "min_age": "180d",
        "actions": {}
      },
      "delete": {
        "min_age": "365d",
        "actions": {}
      }
    }
  }
}