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kustomize/components/non-public-frontend/README.md

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+# Remove the public exposure of Online Boutique's frontend
+
+By default, when you deploy Online Boutique, a `Service` (named `frontend-external`) of type `LoadBalancer` is deployed with a publicly accessible IP address.
+But you may not want to expose this sample app publicly.
+
+## Deploy Online Boutique without the default public endpoint
+
+To automate the deployment of Online Boutique without the default public endpoint you can leverage the following variation with [Kustomize](../..).
+
+From the `kustomize/` folder at the root level of this repository, execute this command:
+
+```bash
+kustomize edit add component components/non-public-frontend
+```
+
+This will update the `kustomize/kustomization.yaml` file which could be similar to:
+
+```yaml
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- base
+components:
+- components/non-public-frontend
+```
+
+You can locally render these manifests by running `kubectl kustomize .` as well as deploying them by running `kubectl apply -k .`.

kustomize/components/non-public-frontend/kustomization.yaml

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+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: kustomize.config.k8s.io/v1alpha1
+kind: Component
+patches:
+# frontend - delete frontend-external service
+- patch: |-
+    apiVersion: v1
+    kind: Service
+    metadata:
+      name: frontend-external
+    $patch: delete