processors:
  - add_host_metadata:
       geo:
          name: server-1
          country_name: PK
          country_iso_code: PK
          city_name: Karachi

after providing add_host_metadata as per document still country_name is not adding below is output of beat

{ "@timestamp": "2020-08-24T10:15:47.394Z", "@metadata": { "beat": "strongswan", "type": "_doc", "version": "8.0.0" }, "strongswan": { "strongswan": { "counter": 1 } }, "event": { "dataset": "strongswan.strongswan" }, "host": { "hostname": "inspiron-15-3567", "geo": { "country_iso_code": "PK", "city_name": "Karachi", "name": "server-1" }, "platform": "ubuntu" } }