Update RBAC policy for configmap locked leader leasing.

plugin/pkg/auth/authorizer/rbac/bootstrappolicy/namespace_policy.go

@@ -100,6 +100,27 @@ func init() {
 			eventsRule(),
 		},
 	})
+	// TODO: Create util on Role+Binding for leader locking if more cases evolve.
+	addNamespaceRole(metav1.NamespaceSystem, rbac.Role{
+		// role for the leader locking on supplied configmap
+		ObjectMeta: metav1.ObjectMeta{Name: "system::leader-locking-kube-controller-manager"},
+		Rules: []rbac.PolicyRule{
+			rbac.NewRule("watch").Groups(legacyGroup).Resources("configmaps").RuleOrDie(),
+			rbac.NewRule("get", "update").Groups(legacyGroup).Resources("configmaps").Names("kube-controller-manager").RuleOrDie(),
+		},
+	})
+	addNamespaceRole(metav1.NamespaceSystem, rbac.Role{
+		// role for the leader locking on supplied configmap
+		ObjectMeta: metav1.ObjectMeta{Name: "system::leader-locking-kube-scheduler"},
+		Rules: []rbac.PolicyRule{
+			rbac.NewRule("watch").Groups(legacyGroup).Resources("configmaps").RuleOrDie(),
+			rbac.NewRule("get", "update").Groups(legacyGroup).Resources("configmaps").Names("kube-scheduler").RuleOrDie(),
+		},
+	})
+	addNamespaceRoleBinding(metav1.NamespaceSystem,
+		rbac.NewRoleBinding("system::leader-locking-kube-controller-manager", metav1.NamespaceSystem).SAs(metav1.NamespaceSystem, "kube-controller-manager").BindingOrDie())
+	addNamespaceRoleBinding(metav1.NamespaceSystem,
+		rbac.NewRoleBinding("system::leader-locking-kube-scheduler", metav1.NamespaceSystem).SAs(metav1.NamespaceSystem, "kube-scheduler").BindingOrDie())
 	addNamespaceRoleBinding(metav1.NamespaceSystem,
 		rbac.NewRoleBinding(saRolePrefix+"bootstrap-signer", metav1.NamespaceSystem).SAs(metav1.NamespaceSystem, "bootstrap-signer").BindingOrDie())
 	addNamespaceRoleBinding(metav1.NamespaceSystem,

plugin/pkg/auth/authorizer/rbac/bootstrappolicy/testdata/namespace-role-bindings.yaml

@@ -26,6 +26,42 @@ items:
     creationTimestamp: null
     labels:
       kubernetes.io/bootstrapping: rbac-defaults
+    name: system::leader-locking-kube-controller-manager
+    namespace: kube-system
+  roleRef:
+    apiGroup: rbac.authorization.k8s.io
+    kind: Role
+    name: system::leader-locking-kube-controller-manager
+  subjects:
+  - kind: ServiceAccount
+    name: kube-controller-manager
+    namespace: kube-system
+- apiVersion: rbac.authorization.k8s.io/v1beta1
+  kind: RoleBinding
+  metadata:
+    annotations:
+      rbac.authorization.kubernetes.io/autoupdate: "true"
+    creationTimestamp: null
+    labels:
+      kubernetes.io/bootstrapping: rbac-defaults
+    name: system::leader-locking-kube-scheduler
+    namespace: kube-system
+  roleRef:
+    apiGroup: rbac.authorization.k8s.io
+    kind: Role
+    name: system::leader-locking-kube-scheduler
+  subjects:
+  - kind: ServiceAccount
+    name: kube-scheduler
+    namespace: kube-system
+- apiVersion: rbac.authorization.k8s.io/v1beta1
+  kind: RoleBinding
+  metadata:
+    annotations:
+      rbac.authorization.kubernetes.io/autoupdate: "true"
+    creationTimestamp: null
+    labels:
+      kubernetes.io/bootstrapping: rbac-defaults
     name: system:controller:bootstrap-signer
     namespace: kube-system
   roleRef:

plugin/pkg/auth/authorizer/rbac/bootstrappolicy/testdata/namespace-roles.yaml

@@ -62,6 +62,58 @@ items:
     creationTimestamp: null
     labels:
       kubernetes.io/bootstrapping: rbac-defaults
+    name: system::leader-locking-kube-controller-manager
+    namespace: kube-system
+  rules:
+  - apiGroups:
+    - ""
+    resources:
+    - configmaps
+    verbs:
+    - watch
+  - apiGroups:
+    - ""
+    resourceNames:
+    - kube-controller-manager
+    resources:
+    - configmaps
+    verbs:
+    - get
+    - update
+- apiVersion: rbac.authorization.k8s.io/v1beta1
+  kind: Role
+  metadata:
+    annotations:
+      rbac.authorization.kubernetes.io/autoupdate: "true"
+    creationTimestamp: null
+    labels:
+      kubernetes.io/bootstrapping: rbac-defaults
+    name: system::leader-locking-kube-scheduler
+    namespace: kube-system
+  rules:
+  - apiGroups:
+    - ""
+    resources:
+    - configmaps
+    verbs:
+    - watch
+  - apiGroups:
+    - ""
+    resourceNames:
+    - kube-scheduler
+    resources:
+    - configmaps
+    verbs:
+    - get
+    - update
+- apiVersion: rbac.authorization.k8s.io/v1beta1
+  kind: Role
+  metadata:
+    annotations:
+      rbac.authorization.kubernetes.io/autoupdate: "true"
+    creationTimestamp: null
+    labels:
+      kubernetes.io/bootstrapping: rbac-defaults
     name: system:controller:bootstrap-signer
     namespace: kube-system
   rules: