{
  networking = {
    hosts = {
      "172.20.28.210" = [ "datanode1" "datanode2" "datanode3" "namenode" ];
      # "172.20.28.210" = [ "*.engine.sesar.int" ];
      "159.149.147.137" = [ "vcenter.sesar.int" ];
    };
  };
}