with import <nixpkgs> {};
let
  etcdNodes = {
    k1-0 = "10.1.30.100";
    k1-1 = "10.1.30.101";
    k1-2 = "10.1.30.102";
  };

  etcdCluster = {
    enable = true;
    existing = true;
    nodes = etcdNodes;
  };

  master = {
    features.k8s = {
      host.name = "k1-0";
      host.address = "10.1.30.100";
      master.enable = true;
      nodes = nodes;
      inherit etcdCluster;
    };
    fileSystems = {
      "/vol/local-storage/vol1" = {
        device = "/vol/vol1";
        options = [ "bind" ];
      };
    };
    services.kubernetes.kubelet.taints.unschedulable = {
      key = "node.kubernetes.io/unschedulable";
      value = "true";
      effect = "NoSchedule";
    };
    imports = [ ./cluster.nix ./hw/k1-0.nix ];
  };

  nodes = [
    { name = "k1-1"; address = "10.1.30.101"; }
    { name = "k1-2"; address = "10.1.30.102"; }
    { name = "k1-3"; address = "10.1.30.103"; }
    { name = "k1-4"; address = "10.1.30.104"; }
    { name = "k1-5"; address = "10.1.30.105"; }
  ];

  mkNode = x: {
    "${x.name}" =
    lib.mkMerge [
      {
        features.k8s.host = x;
      }
      (if builtins.hasAttr x.name etcdNodes then
        {
          features.k8s = { inherit etcdCluster; };
        }
        else {})
      ]
      // { imports = [ ./cluster.nix  (./hw + "/${x.name}.nix") ]; };
  };

in
  builtins.foldl' (a: x: a // mkNode x) {
    "${master.features.k8s.host.name}" = master;
  } nodes