Add kubelet.

nix/kubernetes/roles/kube_controller_manager/default.nix

@@ -35,7 +35,6 @@ in
       serviceConfig = {
         ExecStart = (
           shellCommand [
-            # NEW:
             "${pkgs.kubernetes}/bin/kube-controller-manager"
             "--bind-address=0.0.0.0"
             # "--cluster-cidr=10.200.0.0/16"

nix/kubernetes/roles/kubelet/default.nix

@@ -0,0 +1,101 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  # shellCommand = cmd: (lib.concatMapStringsSep " " lib.strings.escapeShellArg cmd);
+  shellCommand = cmd: (builtins.concatStringsSep " " cmd);
+  settingsFormat = pkgs.formats.yaml { };
+  config_file = settingsFormat.generate "kubelet-config.yaml" config.me.kubelet.settings;
+in
+{
+  imports = [ ];
+
+  options.me = {
+    kubelet.enable = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      example = true;
+      description = "Whether we want to install kubelet.";
+    };
+
+    kubelet.settings = lib.mkOption {
+      type = settingsFormat.type;
+      default = {
+        kind = "KubeletConfiguration";
+        apiVersion = "kubelet.config.k8s.io/v1beta1";
+        address = "0.0.0.0";
+        authentication = {
+          anonymous = {
+            enabled = false;
+          };
+          webhook = {
+            enabled = true;
+          };
+          x509 = {
+            clientCAFile = "/var/lib/kubelet/ca.crt";
+          };
+        };
+        authorization = {
+          mode = "Webhook";
+        };
+        cgroupDriver = "systemd";
+        containerRuntimeEndpoint = "unix:///var/run/containerd/containerd.sock";
+        enableServer = true;
+        failSwapOn = false;
+        maxPods = 16;
+        memorySwap = {
+          swapBehavior = "NoSwap";
+        };
+        port = 10250;
+        resolvConf = "/etc/resolv.conf";
+        registerNode = true;
+        runtimeRequestTimeout = "15m";
+        tlsCertFile = "/var/lib/kubelet/kubelet.crt";
+        tlsPrivateKeyFile = "/var/lib/kubelet/kubelet.key";
+      };
+      description = ''
+        kubelet-config.yaml
+      '';
+    };
+  };
+
+  config = lib.mkIf config.me.kubelet.enable {
+    systemd.services.kubelet = {
+      enable = true;
+      description = "Kubernetes Kubelet";
+      documentation = [ "https://github.com/kubernetes/kubernetes" ];
+      wantedBy = [ "kubernetes.target" ];
+      after = [ "containerd.service" ];
+      requires = [ "containerd.service" ];
+      # path = with pkgs; [
+      #   zfs
+      # ];
+      unitConfig.DefaultDependencies = "no";
+      serviceConfig = {
+        ExecStart = (
+          shellCommand [
+            "${pkgs.kubernetes}/bin/kubelet"
+            # "--config=${config_file}"
+            "--config=${./files/kubelet-config.yaml}"
+            "--kubeconfig=/.persist/keys/kube/kubeconfig"
+            "--v=2"
+          ]
+        );
+        Restart = "on-failure";
+        RestartSec = 5;
+        # ConfigurationDirectory = "kubernetes";
+        # CPUAccounting = "true";
+        # IPAccounting = "true";
+        # KillMode = "process";
+        # MemoryAccounting = "true";
+        # StartLimitInterval = 0;
+        # RuntimeDirectory = "kubelet";
+        # StateDirectory = "kubelet";
+      };
+    };
+  };
+}

nix/kubernetes/roles/kubelet/files/kubelet-config.yaml

@@ -0,0 +1,25 @@
+kind: KubeletConfiguration
+apiVersion: kubelet.config.k8s.io/v1beta1
+address: "0.0.0.0"
+authentication:
+  anonymous:
+    enabled: false
+  webhook:
+    enabled: true
+  x509:
+    clientCAFile: "/.persist/keys/kube/ca.crt"
+authorization:
+  mode: Webhook
+cgroupDriver: systemd
+containerRuntimeEndpoint: "unix:///var/run/containerd/containerd.sock"
+enableServer: true
+failSwapOn: false
+maxPods: 16
+memorySwap:
+  swapBehavior: NoSwap
+port: 10250
+resolvConf: "/etc/resolv.conf"
+registerNode: true
+runtimeRequestTimeout: "15m"
+tlsCertFile: "/.persist/keys/kube/kubelet.crt"
+tlsPrivateKeyFile: "/.persist/keys/kube/kubelet.key"

nix/kubernetes/roles/worker_node/default.nix

@@ -19,6 +19,7 @@
 
   config = lib.mkIf config.me.worker_node.enable {
     me.containerd.enable = true;
+    me.kubelet.enable = true;
     me.kubernetes.enable = true;
   };
 }