# Pastebin 7aU195DO
  gw_keydb:
    _from: keydb
    option:
      - tcp-check
    tcp-check:
      - send *1\r\n$4\r\nping\r\n
      - expect string +PONG
    server:
      - >-
          keydb-rex {{ hostvars["rex"].network_ips.internal.address }}:13062
          check inter 500ms {{ "" if inventory_hostname == "rex" else "backup" }}
      - >-
          keydb-rudi {{ hostvars["rudi"].network_ips.internal.address }}:13062
          check inter 500ms {{ "" if inventory_hostname == "rudi" else "backup" }}