Add kubernetes

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

flake.lock

@@ -2,7 +2,9 @@
   "nodes": {
     "ags": {
       "inputs": {
-        "astal": "astal",
+        "astal": [
+          "astal"
+        ],
         "nixpkgs": [
           "nixpkgs"
         ]
@@ -22,27 +24,6 @@
       }
     },
     "astal": {
-      "inputs": {
-        "nixpkgs": [
-          "ags",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1735172721,
-        "narHash": "sha256-rtEAwGsHSppnkR3Qg3eRJ6Xh/F84IY9CrBBLzYabalY=",
-        "owner": "aylur",
-        "repo": "astal",
-        "rev": "6c84b64efc736e039a8a10774a4a1bf772c37aa2",
-        "type": "github"
-      },
-      "original": {
-        "owner": "aylur",
-        "repo": "astal",
-        "type": "github"
-      }
-    },
-    "astal_2": {
       "inputs": {
         "nixpkgs": [
           "nixpkgs"
@@ -121,7 +102,9 @@
     },
     "flake-utils": {
       "inputs": {
-        "systems": "systems"
+        "systems": [
+          "systems"
+        ]
       },
       "locked": {
         "lastModified": 1731533236,
@@ -160,11 +143,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1736505015,
-        "narHash": "sha256-bY3JTStgCgUZa6cE1GAc+c9ZCExCGvpjmPb7ANanhsc=",
+        "lastModified": 1738059769,
+        "narHash": "sha256-SBOwc5HSi0zThWoj3EfYh673X1d1dc78N2qCtcJmIvo=",
         "owner": "karaolidis",
         "repo": "nixpkgs",
-        "rev": "43ed29dceb72a444d29ec4b0b980deae63ea9791",
+        "rev": "befe9d27e7e7be485aae35d541f135c8471bd508",
         "type": "github"
       },
       "original": {
@@ -174,26 +157,12 @@
         "type": "github"
       }
     },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1736344531,
-        "narHash": "sha256-8YVQ9ZbSfuUk2bUf2KRj60NRraLPKPS0Q4QFTbc+c2c=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "bffc22eb12172e6db3c5dde9e3e5628f8e3e7912",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nur": {
       "inputs": {
         "flake-parts": "flake-parts",
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
         "treefmt-nix": "treefmt-nix"
       },
       "locked": {
@@ -213,14 +182,15 @@
     "root": {
       "inputs": {
         "ags": "ags",
-        "astal": "astal_2",
+        "astal": "astal",
         "disko": "disko",
         "flake-utils": "flake-utils",
         "home-manager": "home-manager",
         "nixpkgs": "nixpkgs",
         "nur": "nur",
         "sops-nix": "sops-nix",
-        "spicetify-nix": "spicetify-nix"
+        "spicetify-nix": "spicetify-nix",
+        "systems": "systems"
       }
     },
     "sops-nix": {
@@ -248,6 +218,9 @@
         "flake-compat": "flake-compat",
         "nixpkgs": [
           "nixpkgs"
+        ],
+        "systems": [
+          "systems"
         ]
       },
       "locked": {
@@ -275,6 +248,7 @@
       },
       "original": {
         "owner": "nix-systems",
+        "ref": "main",
         "repo": "default",
         "type": "github"
       }

flake.nix

@@ -41,8 +41,21 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
+    systems = {
+      type = "github";
+      owner = "nix-systems";
+      repo = "default";
+      ref = "main";
+    };
+
     nur = {
       url = "github:nix-community/NUR";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    flake-utils = {
+      url = "github:numtide/flake-utils";
+      inputs.systems.follows = "systems";
     };
 
     astal = {
@@ -52,16 +65,18 @@
 
     ags = {
       url = "github:aylur/ags";
-      inputs.nixpkgs.follows = "nixpkgs";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        astal.follows = "astal";
+      };
     };
 
     spicetify-nix = {
       url = "github:Gerg-L/spicetify-nix";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
-
-    flake-utils = {
-      url = "github:numtide/flake-utils";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        systems.follows = "systems";
+      };
     };
   };
 

hosts/common/configs/system/kubernetes/addons/bootstrap/default.nix

@@ -0,0 +1,212 @@
+{ config, ... }:
+{
+  bootstrap-node-bootstrapper-crb = {
+    apiVersion = "rbac.authorization.k8s.io/v1";
+    kind = "ClusterRoleBinding";
+    metadata = {
+      name = "create-csrs-for-bootstrapping";
+    };
+    subjects = [
+      {
+        kind = "Group";
+        name = "system:bootstrappers";
+        apiGroup = "rbac.authorization.k8s.io";
+      }
+    ];
+    roleRef = {
+      kind = "ClusterRole";
+      name = "system:node-bootstrapper";
+      apiGroup = "rbac.authorization.k8s.io";
+    };
+  };
+
+  bootstrap-csr-nodeclient-crb = {
+    apiVersion = "rbac.authorization.k8s.io/v1";
+    kind = "ClusterRoleBinding";
+    metadata = {
+      name = "auto-approve-csrs-for-group";
+    };
+    subjects = [
+      {
+        kind = "Group";
+        name = "system:bootstrappers";
+        apiGroup = "rbac.authorization.k8s.io";
+      }
+    ];
+    roleRef = {
+      kind = "ClusterRole";
+      name = "system:certificates.k8s.io:certificatesigningrequests:nodeclient";
+      apiGroup = "rbac.authorization.k8s.io";
+    };
+  };
+
+  bootstrap-csr-selfnodeclient-crb = {
+    apiVersion = "rbac.authorization.k8s.io/v1";
+    kind = "ClusterRoleBinding";
+    metadata = {
+      name = "auto-approve-renewals-for-nodes";
+    };
+    subjects = [
+      {
+        kind = "Group";
+        name = "system:nodes";
+        apiGroup = "rbac.authorization.k8s.io";
+      }
+    ];
+    roleRef = {
+      kind = "ClusterRole";
+      name = "system:certificates.k8s.io:certificatesigningrequests:selfnodeclient";
+      apiGroup = "rbac.authorization.k8s.io";
+    };
+  };
+
+  csr-approver-cr = {
+    apiVersion = "rbac.authorization.k8s.io/v1";
+    kind = "ClusterRole";
+    metadata = {
+      name = "kubelet-csr-approver";
+    };
+    rules = [
+      {
+        apiGroups = [ "certificates.k8s.io" ];
+        resources = [ "certificatesigningrequests" ];
+        verbs = [
+          "get"
+          "list"
+          "watch"
+        ];
+      }
+      {
+        apiGroups = [ "coordination.k8s.io" ];
+        resources = [ "leases" ];
+        verbs = [
+          "create"
+          "get"
+          "update"
+        ];
+      }
+      {
+        apiGroups = [ "certificates.k8s.io" ];
+        resources = [ "certificatesigningrequests/approval" ];
+        verbs = [ "update" ];
+      }
+      {
+        apiGroups = [ "certificates.k8s.io" ];
+        resourceNames = [ "kubernetes.io/kubelet-serving" ];
+        resources = [ "signers" ];
+        verbs = [ "approve" ];
+      }
+      {
+        apiGroups = [ "" ];
+        resources = [ "events" ];
+        verbs = [ "create" ];
+      }
+    ];
+  };
+
+  csr-approver-crb = {
+    apiVersion = "rbac.authorization.k8s.io/v1";
+    kind = "ClusterRoleBinding";
+    metadata = {
+      name = "kubelet-csr-approver";
+      namespace = "kube-system";
+    };
+    roleRef = {
+      apiGroup = "rbac.authorization.k8s.io";
+      kind = "ClusterRole";
+      name = "kubelet-csr-approver";
+    };
+    subjects = [
+      {
+        kind = "ServiceAccount";
+        name = "kubelet-csr-approver";
+        namespace = "kube-system";
+      }
+    ];
+  };
+
+  csr-approver-sa = {
+    apiVersion = "v1";
+    kind = "ServiceAccount";
+    metadata = {
+      name = "kubelet-csr-approver";
+      namespace = "kube-system";
+    };
+  };
+
+  csr-approver-d = {
+    apiVersion = "apps/v1";
+    kind = "Deployment";
+    metadata = {
+      name = "kubelet-csr-approver";
+      namespace = "kube-system";
+    };
+    spec = {
+      replicas = 1;
+      selector = {
+        matchLabels = {
+          app = "kubelet-csr-approver";
+        };
+      };
+      template = {
+        metadata = {
+          labels = {
+            app = "kubelet-csr-approver";
+          };
+        };
+        spec = {
+          serviceAccountName = "kubelet-csr-approver";
+          containers = [
+            {
+              name = "kubelet-csr-approver";
+              image = "postfinance/kubelet-csr-approver:latest";
+              args = [
+                "-metrics-bind-address"
+                ":8080"
+                "-health-probe-bind-address"
+                ":8081"
+              ];
+              livenessProbe = {
+                httpGet = {
+                  path = "/healthz";
+                  port = 8081;
+                };
+              };
+              resources = {
+                requests = {
+                  cpu = "100m";
+                  memory = "200Mi";
+                };
+              };
+              env = [
+                {
+                  name = "PROVIDER_REGEX";
+                  value = "^${config.services.kubernetes.kubelet.hostname}$";
+                }
+                {
+                  name = "PROVIDER_IP_PREFIXES";
+                  value = "10.0.0.0/8,172.16.0.0/12,192.168.0.0/16,127.0.0.0/8,169.254.0.0/16,::1/128,fe80::/10,fc00::/7";
+                }
+                {
+                  name = "MAX_EXPIRATION_SEC";
+                  value = "31622400";
+                }
+                {
+                  name = "BYPASS_DNS_RESOLUTION";
+                  value = "true";
+                }
+              ];
+            }
+          ];
+          tolerations = [
+            {
+              effect = "NoSchedule";
+              key = "node-role.kubernetes.io/control-plane";
+              operator = "Equal";
+            }
+          ];
+        };
+      };
+    };
+  };
+}

hosts/common/configs/system/kubernetes/addons/default.nix

@@ -0,0 +1,7 @@
+{ config, lib, ... }:
+{
+  services.kubernetes.addonManager.bootstrapAddons = lib.mkMerge [
+    (import ./bootstrap { inherit config; })
+    (import ./metrics-server { })
+  ];
+}

hosts/common/configs/system/kubernetes/addons/metrics-server/default.nix

@@ -0,0 +1,297 @@
+{ ... }:
+{
+  metrics-server-sa = {
+    apiVersion = "v1";
+    kind = "ServiceAccount";
+    metadata = {
+      labels = {
+        k8s-app = "metrics-server";
+      };
+      name = "metrics-server";
+      namespace = "kube-system";
+    };
+  };
+
+  metrics-server-metrics-reader-cr = {
+    apiVersion = "rbac.authorization.k8s.io/v1";
+    kind = "ClusterRole";
+    metadata = {
+      labels = {
+        k8s-app = "metrics-server";
+        "rbac.authorization.k8s.io/aggregate-to-admin" = "true";
+        "rbac.authorization.k8s.io/aggregate-to-edit" = "true";
+        "rbac.authorization.k8s.io/aggregate-to-view" = "true";
+      };
+      name = "system:aggregated-metrics-reader";
+    };
+    rules = [
+      {
+        apiGroups = [ "metrics.k8s.io" ];
+        resources = [
+          "pods"
+          "nodes"
+        ];
+        verbs = [
+          "get"
+          "list"
+          "watch"
+        ];
+      }
+    ];
+  };
+
+  metrics-server-cr = {
+    apiVersion = "rbac.authorization.k8s.io/v1";
+    kind = "ClusterRole";
+    metadata = {
+      labels = {
+        k8s-app = "metrics-server";
+      };
+      name = "system:metrics-server";
+    };
+    rules = [
+      {
+        apiGroups = [ "" ];
+        resources = [ "nodes/metrics" ];
+        verbs = [ "get" ];
+      }
+      {
+        apiGroups = [ "" ];
+        resources = [
+          "pods"
+          "nodes"
+        ];
+        verbs = [
+          "get"
+          "list"
+          "watch"
+        ];
+      }
+    ];
+  };
+
+  metrics-server-rb = {
+    apiVersion = "rbac.authorization.k8s.io/v1";
+    kind = "RoleBinding";
+    metadata = {
+      labels = {
+        k8s-app = "metrics-server";
+      };
+      name = "metrics-server-auth-reader";
+      namespace = "kube-system";
+    };
+    roleRef = {
+      apiGroup = "rbac.authorization.k8s.io";
+      kind = "Role";
+      name = "extension-apiserver-authentication-reader";
+    };
+    subjects = [
+      {
+        kind = "ServiceAccount";
+        name = "metrics-server";
+        namespace = "kube-system";
+      }
+    ];
+  };
+
+  metrics-server-auth-delegator-crb = {
+    apiVersion = "rbac.authorization.k8s.io/v1";
+    kind = "ClusterRoleBinding";
+    metadata = {
+      labels = {
+        k8s-app = "metrics-server";
+      };
+      name = "metrics-server:system:auth-delegator";
+    };
+    roleRef = {
+      apiGroup = "rbac.authorization.k8s.io";
+      kind = "ClusterRole";
+      name = "system:auth-delegator";
+    };
+    subjects = [
+      {
+        kind = "ServiceAccount";
+        name = "metrics-server";
+        namespace = "kube-system";
+      }
+    ];
+  };
+
+  metrics-server-crb = {
+    apiVersion = "rbac.authorization.k8s.io/v1";
+    kind = "ClusterRoleBinding";
+    metadata = {
+      labels = {
+        k8s-app = "metrics-server";
+      };
+      name = "system:metrics-server";
+    };
+    roleRef = {
+      apiGroup = "rbac.authorization.k8s.io";
+      kind = "ClusterRole";
+      name = "system:metrics-server";
+    };
+    subjects = [
+      {
+        kind = "ServiceAccount";
+        name = "metrics-server";
+        namespace = "kube-system";
+      }
+    ];
+  };
+
+  metrics-server-s = {
+    apiVersion = "v1";
+    kind = "Service";
+    metadata = {
+      labels = {
+        k8s-app = "metrics-server";
+      };
+      name = "metrics-server";
+      namespace = "kube-system";
+    };
+    spec = {
+      ports = [
+        {
+          name = "https";
+          port = 443;
+          protocol = "TCP";
+          targetPort = "https";
+        }
+      ];
+      selector = {
+        k8s-app = "metrics-server";
+      };
+    };
+  };
+
+  metrics-server-d = {
+    apiVersion = "apps/v1";
+    kind = "Deployment";
+    metadata = {
+      labels = {
+        k8s-app = "metrics-server";
+      };
+      name = "metrics-server";
+      namespace = "kube-system";
+    };
+    spec = {
+      selector = {
+        matchLabels = {
+          k8s-app = "metrics-server";
+        };
+      };
+      strategy = {
+        rollingUpdate = {
+          maxUnavailable = 0;
+        };
+      };
+      template = {
+        metadata = {
+          labels = {
+            k8s-app = "metrics-server";
+          };
+        };
+        spec = {
+          containers = [
+            {
+              args = [
+                "--cert-dir=/tmp"
+                "--secure-port=10250"
+                "--kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname"
+                "--kubelet-use-node-status-port"
+                "--metric-resolution=15s"
+              ];
+              image = "registry.k8s.io/metrics-server/metrics-server:v0.7.2";
+              imagePullPolicy = "IfNotPresent";
+              livenessProbe = {
+                failureThreshold = 3;
+                httpGet = {
+                  path = "/livez";
+                  port = "https";
+                  scheme = "HTTPS";
+                };
+                periodSeconds = 10;
+              };
+              name = "metrics-server";
+              ports = [
+                {
+                  containerPort = 10250;
+                  name = "https";
+                  protocol = "TCP";
+                }
+              ];
+              readinessProbe = {
+                failureThreshold = 3;
+                httpGet = {
+                  path = "/readyz";
+                  port = "https";
+                  scheme = "HTTPS";
+                };
+                initialDelaySeconds = 20;
+                periodSeconds = 10;
+              };
+              resources = {
+                requests = {
+                  cpu = "100m";
+                  memory = "200Mi";
+                };
+              };
+              securityContext = {
+                allowPrivilegeEscalation = false;
+                capabilities = {
+                  drop = [ "ALL" ];
+                };
+                readOnlyRootFilesystem = true;
+                runAsNonRoot = true;
+                runAsUser = 1000;
+                seccompProfile = {
+                  type = "RuntimeDefault";
+                };
+              };
+              volumeMounts = [
+                {
+                  mountPath = "/tmp";
+                  name = "tmp-dir";
+                }
+              ];
+            }
+          ];
+          nodeSelector = {
+            "kubernetes.io/os" = "linux";
+          };
+          priorityClassName = "system-cluster-critical";
+          serviceAccountName = "metrics-server";
+          volumes = [
+            {
+              emptyDir = { };
+              name = "tmp-dir";
+            }
+          ];
+        };
+      };
+    };
+  };
+
+  metrics-server-apis = {
+    apiVersion = "apiregistration.k8s.io/v1";
+    kind = "APIService";
+    metadata = {
+      labels = {
+        k8s-app = "metrics-server";
+      };
+      name = "v1beta1.metrics.k8s.io";
+    };
+    spec = {
+      group = "metrics.k8s.io";
+      groupPriorityMinimum = 100;
+      insecureSkipTLSVerify = true;
+      service = {
+        name = "metrics-server";
+        namespace = "kube-system";
+      };
+      version = "v1beta1";
+      versionPriority = 100;
+    };
+  };
+}

hosts/common/configs/system/kubernetes/default.nix

@@ -0,0 +1,233 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  adminKubeconfig = config.services.kubernetes.lib.mkKubeConfig "admin" {
+    caFile = config.sops.secrets."kubernetes/ca/crt".path;
+    keyFile = config.sops.secrets."kubernetes/accounts/admin/key".path;
+    certFile = config.sops.secrets."kubernetes/accounts/admin/crt".path;
+    server = config.services.kubernetes.apiserverAddress;
+  };
+in
+{
+  imports = [
+    ./addons
+    ./secrets
+  ];
+
+  environment = {
+    persistence."/persist" = {
+      "/var/lib/containerd" = { };
+      "/var/lib/kubernetes" = { };
+      "/var/lib/kubelet" = { };
+      "/var/lib/etcd" = { };
+    };
+
+    etc."kubeconfig".source = adminKubeconfig;
+    systemPackages = with pkgs; [ kubectl ];
+  };
+
+  services = {
+    kubernetes = {
+      roles = [
+        "master"
+        "node"
+      ];
+
+      masterAddress = "localhost";
+      easyCerts = false;
+      caFile = config.sops.secrets."kubernetes/ca/crt".path;
+      addonManager.enable = true;
+
+      apiserver = {
+        allowPrivileged = true;
+
+        clientCaFile = config.sops.secrets."kubernetes/ca/crt".path;
+        kubeletClientCaFile = config.sops.secrets."kubernetes/ca/crt".path;
+        tlsKeyFile = config.sops.secrets."kubernetes/apiserver/cert/key".path;
+        tlsCertFile = config.sops.secrets."kubernetes/apiserver/cert/crt".path;
+        kubeletClientKeyFile = config.sops.secrets."kubernetes/apiserver/kubelet-client/key".path;
+        kubeletClientCertFile = config.sops.secrets."kubernetes/apiserver/kubelet-client/crt".path;
+        proxyClientKeyFile = config.sops.secrets."kubernetes/front-proxy/client/key".path;
+        proxyClientCertFile = config.sops.secrets."kubernetes/front-proxy/client/crt".path;
+        serviceAccountSigningKeyFile = config.sops.secrets."kubernetes/sa/key".path;
+        serviceAccountKeyFile = config.sops.secrets."kubernetes/sa/pub".path;
+
+        extraOpts = lib.strings.concatStringsSep " " [
+          "--enable-bootstrap-token-auth=true"
+          "--token-auth-file=${config.sops.secrets."kubernetes/accounts/kubelet-bootstrap/csv".path}"
+          "--requestheader-client-ca-file=${config.sops.secrets."kubernetes/front-proxy/ca/crt".path}"
+          "--requestheader-allowed-names=front-proxy-client"
+          "--requestheader-extra-headers-prefix=X-Remote-Extra-"
+          "--requestheader-group-headers=X-Remote-Group"
+          "--requestheader-username-headers=X-Remote-User"
+        ];
+
+        etcd = {
+          servers = [ "https://etcd.local:2379" ];
+          caFile = config.sops.secrets."kubernetes/etcd/ca/crt".path;
+          keyFile = config.sops.secrets."kubernetes/apiserver/etcd-client/key".path;
+          certFile = config.sops.secrets."kubernetes/apiserver/etcd-client/crt".path;
+        };
+      };
+
+      controllerManager = {
+        rootCaFile = config.sops.secrets."kubernetes/ca/crt".path;
+        serviceAccountKeyFile = config.sops.secrets."kubernetes/sa/key".path;
+
+        extraOpts = lib.strings.concatStringsSep " " [
+          "--client-ca-file=${config.sops.secrets."kubernetes/ca/crt".path}"
+          "--cluster-signing-cert-file=${config.sops.secrets."kubernetes/ca/crt".path}"
+          "--cluster-signing-key-file=${config.sops.secrets."kubernetes/ca/key".path}"
+          "--requestheader-client-ca-file=${config.sops.secrets."kubernetes/front-proxy/ca/crt".path}"
+        ];
+
+        kubeconfig = {
+          caFile = config.sops.secrets."kubernetes/ca/crt".path;
+          keyFile = config.sops.secrets."kubernetes/accounts/controller-manager/key".path;
+          certFile = config.sops.secrets."kubernetes/accounts/controller-manager/crt".path;
+        };
+      };
+
+      kubelet = {
+        clientCaFile = config.sops.secrets."kubernetes/ca/crt".path;
+
+        extraOpts = lib.strings.concatStringsSep " " [
+          "--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubeconfig"
+          "--kubeconfig=/var/lib/kubelet/kubeconfig"
+          "--cert-dir=/var/lib/kubelet"
+        ];
+
+        extraConfig = {
+          failSwapOn = false;
+          rotateCertificates = true;
+          serverTLSBootstrap = true;
+          memorySwap.swapBehavior = "LimitedSwap";
+        };
+
+        featureGates = {
+          RotateKubeletServerCertificate = true;
+          NodeSwap = true;
+        };
+      };
+
+      proxy.kubeconfig = {
+        caFile = config.sops.secrets."kubernetes/ca/crt".path;
+        keyFile = config.sops.secrets."kubernetes/accounts/proxy/key".path;
+        certFile = config.sops.secrets."kubernetes/accounts/proxy/crt".path;
+      };
+
+      scheduler.kubeconfig = {
+        caFile = config.sops.secrets."kubernetes/ca/crt".path;
+        keyFile = config.sops.secrets."kubernetes/accounts/scheduler/key".path;
+        certFile = config.sops.secrets."kubernetes/accounts/scheduler/crt".path;
+      };
+    };
+
+    etcd = {
+      keyFile = config.sops.secrets."kubernetes/etcd/server/key".path;
+      certFile = config.sops.secrets."kubernetes/etcd/server/crt".path;
+      peerKeyFile = config.sops.secrets."kubernetes/etcd/peer/key".path;
+      peerCertFile = config.sops.secrets."kubernetes/etcd/peer/crt".path;
+      trustedCaFile = config.sops.secrets."kubernetes/etcd/ca/crt".path;
+      peerTrustedCaFile = config.sops.secrets."kubernetes/etcd/ca/crt".path;
+      listenClientUrls = [ "https://127.0.0.1:2379" ];
+      listenPeerUrls = [ "https://127.0.0.1:2380" ];
+      advertiseClientUrls = [ "https://etcd.local:2379" ];
+      initialCluster = [ "${config.services.kubernetes.masterAddress}=https://etcd.local:2380" ];
+      initialAdvertisePeerUrls = [ "https://etcd.local:2380" ];
+    };
+
+    flannel.kubeconfig = config.services.kubernetes.lib.mkKubeConfig "flannel" {
+      caFile = config.sops.secrets."kubernetes/ca/crt".path;
+      keyFile = config.sops.secrets."kubernetes/accounts/flannel/key".path;
+      certFile = config.sops.secrets."kubernetes/accounts/flannel/crt".path;
+      server = config.services.kubernetes.apiserverAddress;
+    };
+  };
+
+  networking = {
+    firewall.enable = false;
+    extraHosts = lib.strings.optionalString (config.services.etcd.enable) ''
+      127.0.0.1 etcd.${config.services.kubernetes.addons.dns.clusterDomain} etcd.local
+    '';
+  };
+
+  systemd.services = {
+    kube-addon-manager = {
+      after = [
+        "sops-nix.service"
+        config.environment.persistence."/persist"."/var/lib/kubernetes".mount
+      ];
+
+      environment.KUBECONFIG = config.services.kubernetes.lib.mkKubeConfig "addon-manager" {
+        caFile = config.sops.secrets."kubernetes/ca/crt".path;
+        keyFile = config.sops.secrets."kubernetes/accounts/addon-manager/key".path;
+        certFile = config.sops.secrets."kubernetes/accounts/addon-manager/crt".path;
+        server = config.services.kubernetes.apiserverAddress;
+      };
+
+      serviceConfig.PermissionsStartOnly = true;
+
+      preStart = ''
+        export KUBECONFIG=${adminKubeconfig}
+        ${config.services.kubernetes.package}/bin/kubectl apply -f ${
+          lib.strings.concatStringsSep " \\\n -f " (
+            lib.attrsets.mapAttrsToList (
+              n: v: pkgs.writeText "${n}.json" (builtins.toJSON v)
+            ) config.services.kubernetes.addonManager.bootstrapAddons
+          )
+        }
+      '';
+    };
+
+    kubelet = {
+      preStart = ''
+        mkdir -p /etc/kubernetes
+        cat > /etc/kubernetes/bootstrap-kubeconfig <<EOF
+        apiVersion: v1
+        kind: Config
+        clusters:
+        - cluster:
+            certificate-authority: ${config.sops.secrets."kubernetes/ca/crt".path}
+            server: ${config.services.kubernetes.apiserverAddress}
+          name: local
+        contexts:
+        - context:
+            cluster: local
+            user: kubelet-bootstrap
+          name: bootstrap
+        current-context: bootstrap
+        preferences: {}
+        users:
+        - name: kubelet-bootstrap
+          user:
+            token: $(<${config.sops.secrets."kubernetes/accounts/kubelet-bootstrap/token".path})
+        EOF
+      '';
+
+      after = [
+        "sops-nix.service"
+        config.environment.persistence."/persist"."/var/lib/kubelet".mount
+      ];
+    };
+
+    kube-apiserver.after = [
+      "sops-nix.service"
+      config.environment.persistence."/persist"."/var/lib/kubernetes".mount
+    ];
+
+    etcd.after = [
+      "sops-nix.service"
+      config.environment.persistence."/persist"."/var/lib/etcd".mount
+    ];
+
+    kube-controller-manager.after = [ "sops-nix.service" ];
+    kube-proxy.after = [ "sops-nix.service" ];
+    kube-scheduler.after = [ "sops-nix.service" ];
+    flannel.after = [ "sops-nix.service" ];
+  };
+}

hosts/common/configs/system/kubernetes/secrets/default.nix

@@ -0,0 +1,204 @@
+{ ... }:
+{
+  sops.secrets = {
+    "kubernetes/ca/crt" = {
+      owner = "kubernetes";
+      group = "users";
+      mode = "0440";
+    };
+
+    "kubernetes/ca/key" = {
+      owner = "kubernetes";
+      group = "users";
+      mode = "0440";
+    };
+
+    "kubernetes/front-proxy/ca/crt" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/front-proxy/ca/key" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/etcd/ca/crt" = {
+      owner = "etcd";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/etcd/ca/key" = {
+      owner = "etcd";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/apiserver/cert/crt" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/apiserver/cert/key" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/apiserver/kubelet-client/crt" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/apiserver/kubelet-client/key" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/apiserver/etcd-client/crt" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/apiserver/etcd-client/key" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/front-proxy/client/crt" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/front-proxy/client/key" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/etcd/server/crt" = {
+      owner = "etcd";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/etcd/server/key" = {
+      owner = "etcd";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/etcd/peer/crt" = {
+      owner = "etcd";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/etcd/peer/key" = {
+      owner = "etcd";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/sa/key" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/sa/pub" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/accounts/admin/crt" = {
+      group = "kubernetes";
+    };
+
+    "kubernetes/accounts/admin/key" = {
+      group = "kubernetes";
+    };
+
+    "kubernetes/accounts/controller-manager/crt" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/accounts/controller-manager/key" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/accounts/addon-manager/crt" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/accounts/addon-manager/key" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/accounts/scheduler/crt" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/accounts/scheduler/key" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/accounts/proxy/crt" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/accounts/proxy/key" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/accounts/flannel/crt" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/accounts/flannel/key" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/accounts/kubelet-bootstrap/token" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+
+    "kubernetes/accounts/kubelet-bootstrap/csv" = {
+      owner = "kubernetes";
+      group = "kubernetes";
+      mode = "0440";
+    };
+  };
+}

hosts/common/configs/system/kubernetes/secrets/generate-secrets.sh

@@ -0,0 +1,210 @@
+#!/usr/bin/env -S nix shell nixpkgs#openssl nixpkgs#yq-go nixpkgs#sops -c bash
+
+set -o errexit
+set -o pipefail
+
+generate_ca() {
+  local target_dir=$1
+  local ca_name=$2
+  local ca_days=$3
+  local cn=$4
+
+  mkdir -p "${target_dir}"
+  local ca_key=${target_dir}/${ca_name}.key
+  local ca_cert=${target_dir}/${ca_name}.crt
+
+  openssl genrsa -out "${ca_key}" 2048
+  openssl req -x509 -new -nodes -key "${ca_key}" -days "${ca_days}" -out "${ca_cert}" -subj "/CN=${cn}"
+}
+
+generate_alt_names() {
+  local hosts=("$@")
+  local dns=0
+  local ip=0
+  local alt_names=""
+
+  for host in "${hosts[@]}"; do
+    if [[ ${host} =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+      alt_names="${alt_names}IP.${ip} = ${host}\n"
+      ((ip++))
+    else
+      alt_names="${alt_names}DNS.${dns} = ${host}\n"
+      ((dns++))
+    fi
+  done
+
+  echo -e "${alt_names}"
+}
+
+generate_cnf() {
+  local target_dir=$1
+  local cnf_name=$2
+  local cn=$3
+  local hosts=("${@:4}")
+
+  mkdir -p "${target_dir}"
+  local cnf_file=${target_dir}/${cnf_name}.cnf
+
+  cat <<EOF > "${cnf_file}"
+[req]
+prompt = no
+
+[ req_ext ]
+subjectAltName = @alt_names
+
+[ alt_names ]
+$(generate_alt_names "${hosts[@]}")
+
+[ v3_ext ]
+authorityKeyIdentifier=keyid,issuer:always
+basicConstraints=CA:FALSE
+keyUsage=keyEncipherment,dataEncipherment,digitalSignature
+extendedKeyUsage=serverAuth,clientAuth
+subjectAltName=@alt_names
+EOF
+}
+
+generate_crt() {
+  local target_dir=$1
+  local cert_name=$2
+  local cert_days=$3
+  local cn=$4
+  local o=$5
+  local ca_key=$6
+  local ca_cert=$7
+  local hosts=("${@:8}")
+
+  mkdir -p "${target_dir}"
+  local cert_key=${target_dir}/${cert_name}.key
+  local cert_csr=${target_dir}/${cert_name}.csr
+  local cert_cert=${target_dir}/${cert_name}.crt
+
+  openssl genrsa -out "${cert_key}" 2048
+
+  local subject="/CN=${cn}"
+  if [ -n "${o}" ]; then
+    subject="${subject}/O=${o}"
+  fi
+
+  if [ -n "${hosts}" ]; then
+    generate_cnf "${target_dir}" "${cert_name}" "${cn}" "${hosts[@]}"
+    openssl req -new -key "${cert_key}" -out "${cert_csr}" -subj "${subject}" -config "${target_dir}"/"${cert_name}".cnf
+    openssl x509 -req -in "${cert_csr}" -CA "${ca_cert}" -CAkey "${ca_key}" -CAcreateserial -out "${cert_cert}" -days "${cert_days}" -extfile "${target_dir}"/"${cert_name}".cnf -extensions v3_ext
+  else
+    openssl req -new -key "${cert_key}" -out "${cert_csr}" -subj "${subject}"
+    openssl x509 -req -in "${cert_csr}" -CA "${ca_cert}" -CAkey "${ca_key}" -CAcreateserial -out "${cert_cert}" -days "${cert_days}"
+  fi
+}
+
+generate_key_pair() {
+  local target_dir=$1
+  local key_name=$2
+
+  mkdir -p "${target_dir}"
+  local private_key=${target_dir}/${key_name}.key
+  local public_key=${target_dir}/${key_name}.pub
+
+  openssl genrsa -out "${private_key}" 2048
+  openssl rsa -in "${private_key}" -pubout -out "${public_key}"
+}
+
+generate_auth_token() {
+  local target_dir=$1
+  local token_name=$2
+  local user=$3
+  local id=$4
+  local groups=$5
+
+  mkdir -p "${target_dir}"
+  local token_file="${target_dir}/${token_name}.token"
+  local token_auth_file="${target_dir}/${token_name}.csv"
+
+  token="$(head -c 16 /dev/urandom | od -An -t x | tr -d ' ')"
+  echo "${token}" > "${token_file}"
+  echo "${token},${user},${id},\"${groups}\"" > "${token_auth_file}"
+}
+
+DEFAULT_CA_DAYS=3650
+
+if [[ -z "$SOPS_AGE_KEY_FILE" ]]; then
+  echo "Please set the SOPS_AGE_KEY_FILE environment variable"
+  exit 1
+fi
+
+hostname=${1:-$(hostname)}
+
+if [ -z "${hostname}" ]; then
+  echo "Usage: $0 [hostname]"
+  exit 1
+fi
+
+generate_ca out ca ${DEFAULT_CA_DAYS} kubernetes-ca ""
+generate_ca out/front-proxy ca ${DEFAULT_CA_DAYS} kubernetes-front-proxy-ca ""
+generate_ca out/etcd ca ${DEFAULT_CA_DAYS} etcd-ca ""
+
+generate_crt out/apiserver cert ${DEFAULT_CA_DAYS} kube-apiserver "" out/ca.key out/ca.crt "kubernetes" "kubernetes.default" "kubernetes.default.svc" "kubernetes.default.svc.cluster" "kubernetes.default.svc.cluster.local" "localhost" "10.0.0.1" "127.0.0.1"
+generate_crt out/apiserver kubelet-client ${DEFAULT_CA_DAYS} kube-apiserver-kubelet-client system:masters out/ca.key out/ca.crt ""
+generate_crt out/apiserver etcd-client ${DEFAULT_CA_DAYS} kube-apiserver-etcd-client "" out/etcd/ca.key out/etcd/ca.crt ""
+generate_crt out/front-proxy client ${DEFAULT_CA_DAYS} front-proxy-client "" out/front-proxy/ca.key out/front-proxy/ca.crt ""
+generate_crt out/etcd server ${DEFAULT_CA_DAYS} kube-etcd "" out/etcd/ca.key out/etcd/ca.crt "etcd.local" "etcd.cluster.local" "localhost" "127.0.0.1"
+generate_crt out/etcd peer ${DEFAULT_CA_DAYS} kube-etcd-peer "" out/etcd/ca.key out/etcd/ca.crt "etcd.local" "etcd.cluster.local" "localhost" "127.0.0.1"
+
+generate_key_pair out sa
+
+generate_crt out/accounts admin ${DEFAULT_CA_DAYS} kubernetes-admin system:masters out/ca.key out/ca.crt ""
+generate_crt out/accounts users ${DEFAULT_CA_DAYS} kubernetes-users system:masters out/ca.key out/ca.crt ""
+generate_crt out/accounts controller-manager ${DEFAULT_CA_DAYS} system:kube-controller-manager "" out/ca.key out/ca.crt ""
+generate_crt out/accounts addon-manager ${DEFAULT_CA_DAYS} system:kube-addon-manager "" out/ca.key out/ca.crt ""
+generate_crt out/accounts scheduler ${DEFAULT_CA_DAYS} system:kube-scheduler "" out/ca.key out/ca.crt ""
+generate_crt out/accounts proxy ${DEFAULT_CA_DAYS} system:kube-proxy "" out/ca.key out/ca.crt ""
+generate_crt out/accounts flannel ${DEFAULT_CA_DAYS} flannel-client "" out/ca.key out/ca.crt ""
+
+generate_auth_token out/accounts kubelet-bootstrap "kubelet-bootstrap" 10001 "system:bootstrappers"
+
+sops_config="../../../../../$(hostname)/secrets/sops.yaml"
+secrets_file="../../../../../$(hostname)/secrets/secrets.yaml"
+decrypted_secrets_file="../../../../../$(hostname)/secrets/.decrypted~secrets.yaml"
+sops -d "${secrets_file}" > "${decrypted_secrets_file}"
+
+yq -i '
+  del(.kubernetes) |
+  .kubernetes.ca.crt = load_str("out/ca.crt") |
+  .kubernetes.ca.key = load_str("out/ca.key") |
+  .kubernetes.front-proxy.ca.crt = load_str("out/front-proxy/ca.crt") |
+  .kubernetes.front-proxy.ca.key = load_str("out/front-proxy/ca.key") |
+  .kubernetes.etcd.ca.crt = load_str("out/etcd/ca.crt") |
+  .kubernetes.etcd.ca.key = load_str("out/etcd/ca.key") |
+  .kubernetes.apiserver.cert.crt = load_str("out/apiserver/cert.crt") |
+  .kubernetes.apiserver.cert.key = load_str("out/apiserver/cert.key") |
+  .kubernetes.apiserver.kubelet-client.crt = load_str("out/apiserver/kubelet-client.crt") |
+  .kubernetes.apiserver.kubelet-client.key = load_str("out/apiserver/kubelet-client.key") |
+  .kubernetes.apiserver.etcd-client.crt = load_str("out/apiserver/etcd-client.crt") |
+  .kubernetes.apiserver.etcd-client.key = load_str("out/apiserver/etcd-client.key") |
+  .kubernetes.front-proxy.client.crt = load_str("out/front-proxy/client.crt") |
+  .kubernetes.front-proxy.client.key = load_str("out/front-proxy/client.key") |
+  .kubernetes.etcd.server.crt = load_str("out/etcd/server.crt") |
+  .kubernetes.etcd.server.key = load_str("out/etcd/server.key") |
+  .kubernetes.etcd.peer.crt = load_str("out/etcd/peer.crt") |
+  .kubernetes.etcd.peer.key = load_str("out/etcd/peer.key") |
+  .kubernetes.sa.key = load_str("out/sa.key") |
+  .kubernetes.sa.pub = load_str("out/sa.pub") |
+  .kubernetes.accounts.admin.crt = load_str("out/accounts/admin.crt") |
+  .kubernetes.accounts.admin.key = load_str("out/accounts/admin.key") |
+  .kubernetes.accounts.users.crt = load_str("out/accounts/users.crt") |
+  .kubernetes.accounts.users.key = load_str("out/accounts/users.key") |
+  .kubernetes.accounts.controller-manager.crt = load_str("out/accounts/controller-manager.crt") |
+  .kubernetes.accounts.controller-manager.key = load_str("out/accounts/controller-manager.key") |
+  .kubernetes.accounts.addon-manager.crt = load_str("out/accounts/addon-manager.crt") |
+  .kubernetes.accounts.addon-manager.key = load_str("out/accounts/addon-manager.key") |
+  .kubernetes.accounts.scheduler.crt = load_str("out/accounts/scheduler.crt") |
+  .kubernetes.accounts.scheduler.key = load_str("out/accounts/scheduler.key") |
+  .kubernetes.accounts.proxy.crt = load_str("out/accounts/proxy.crt") |
+  .kubernetes.accounts.proxy.key = load_str("out/accounts/proxy.key") |
+  .kubernetes.accounts.flannel.crt = load_str("out/accounts/flannel.crt") |
+  .kubernetes.accounts.flannel.key = load_str("out/accounts/flannel.key") |
+  .kubernetes.accounts.kubelet-bootstrap.token = load_str("out/accounts/kubelet-bootstrap.token") |
+  .kubernetes.accounts.kubelet-bootstrap.csv = load_str("out/accounts/kubelet-bootstrap.csv")
+' "${decrypted_secrets_file}"
+
+sops --config "${sops_config}" -e "${decrypted_secrets_file}" > "${secrets_file}"
+rm -rf out

hosts/common/configs/user/console/kubernetes/default.nix

@@ -2,7 +2,12 @@
   user ? throw "user argument is required",
   home ? throw "home argument is required",
 }:
-{ pkgs, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
 {
   nixpkgs.overlays = [
     (final: prev: {
@@ -17,13 +22,38 @@
     "/cache"."${home}/.kube/cache" = { };
   };
 
+  users.users.${user}.extraGroups = [ "kubernetes" ];
+
+  sops.secrets = {
+    "kubernetes/accounts/${user}/crt" = {
+      key = "kubernetes/accounts/users/crt";
+      group = "users";
+      mode = "0440";
+    };
+
+    "kubernetes/accounts/${user}/key" = {
+      key = "kubernetes/accounts/users/key";
+      group = "users";
+      mode = "0440";
+    };
+  };
+
   home-manager.users.${user} = {
-    home.packages = with pkgs; [
-      kubectl
-      kubernetes-helm
-      kustomize
-      kind
-    ];
+    home = {
+      packages = with pkgs; [
+        kubectl
+        kustomize
+        kubernetes-helm
+        kompose
+      ];
+
+      file.".kube/local".source = config.services.kubernetes.lib.mkKubeConfig user {
+        caFile = config.sops.secrets."kubernetes/ca/crt".path;
+        certFile = config.sops.secrets."kubernetes/accounts/${user}/crt".path;
+        keyFile = config.sops.secrets."kubernetes/accounts/${user}/key".path;
+        server = config.services.kubernetes.apiserverAddress;
+      };
+    };
 
     programs = {
       k9s = {

hosts/elara/default.nix

@@ -24,6 +24,7 @@
     ../common/configs/system/git
     ../common/configs/system/gpg-agent
     ../common/configs/system/impermanence
+    ../common/configs/system/kubernetes
     ../common/configs/system/neovim
     ../common/configs/system/networking
     ../common/configs/system/nix

lib/scripts/update-keys.sh

@@ -4,13 +4,11 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-if [[ "$#" -ne 1 ]]; then
-  echo "Usage: $0 <sops-master-key>"
+if [[ -z "$SOPS_AGE_KEY_FILE" ]]; then
+  echo "Please set the SOPS_AGE_KEY_FILE environment variable"
   exit 1
 fi
 
-export SOPS_AGE_KEY_FILE="$1"
-
 find . -type f -name 'sops.yaml' | while IFS= read -r sops_file; do
   dir=$(dirname "$sops_file")
   echo "$dir"