🌱 Add metrics-viewer 'battery'

config/root-phase0/metrics-cluster-role-binding.yaml

@@ -0,0 +1,16 @@
+kind: ClusterRoleBinding
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: metrics-viewer
+  namespace: default
+  annotations:
+    bootstrap.kcp.io/battery: metrics-viewer
+subjects:
+- kind: ServiceAccount
+  name: metrics
+  namespace: default
+  apiGroup: ""
+roleRef:
+  kind: ClusterRole
+  name: metrics-viewer
+  apiGroup: ""

config/root-phase0/metrics-cluster-role.yaml

@@ -0,0 +1,11 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: metrics-viewer
+  annotations:
+    bootstrap.kcp.io/battery: metrics-viewer
+rules:
+- nonResourceURLs:
+  - '/metrics'
+  verbs:
+  - 'GET'

config/root-phase0/metrics-service-account-secret.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: Secret
+type: kubernetes.io/service-account-token
+metadata:
+  name: metrics
+  annotations:
+    kubernetes.io/service-account.name: metrics
+    bootstrap.kcp.io/battery: metrics-viewer

config/root-phase0/metrics-service-account.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: metrics
+  namespace: default
+  annotations:
+    bootstrap.kcp.io/battery: metrics-viewer

pkg/server/options/batteries/batteries.go

@@ -28,11 +28,15 @@ const (
 
 	// User leads to an additional user named "user" in the admin.kubeconfig that is not admin.
 	User = "user"
+
+	// MetricsViewer leads to an additional service account named "metrics" in the root namespace that can view metrics.
+	MetricsViewer = "metrics-viewer"
 )
 
 var All = sets.New[string](
 	WorkspaceTypes,
 	User,
+	MetricsViewer,
 )
 
 var Defaults = sets.New[string](