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