init: kubebuilder

.containerignore

@@ -0,0 +1,16 @@
+# More info: https://docs.docker.com/engine/reference/builder/#dockerignore-file
+# Ignore everything by default and re-include only needed files
+**
+
+# Re-include Go module files
+!go.mod
+!go.sum
+
+# Re-include Go source files (but not *_test.go). The source dirs are named because
+# Podman and the classic Docker builder skip ignored dirs; add your own dirs here too.
+!**/*.go
+!cmd
+!api
+!internal
+!pkg
+**/*_test.go

.custom-gcl.yml

@@ -0,0 +1,11 @@
+# This file configures golangci-lint with module plugins.
+# When you run 'make lint', it will automatically build a custom golangci-lint binary
+# with all the plugins listed below.
+#
+# See: https://golangci-lint.run/plugins/module-plugins/
+version: v2.8.0
+plugins:
+  # logcheck validates structured logging calls and parameters (e.g., balanced key-value pairs)
+  - module: "sigs.k8s.io/logtools"
+    import: "sigs.k8s.io/logtools/logcheck/gclplugin"
+    version: latest

.gitignore

@@ -0,0 +1,30 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+bin/*
+Dockerfile.cross
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Go workspace file
+go.work
+
+# Kubernetes Generated files - skip generated files, except for vendored files
+!vendor/**/zz_generated.*
+
+# editor and IDE paraphernalia
+.idea
+.vscode
+*.swp
+*.swo
+*~
+
+# Kubeconfig might contain secrets
+*.kubeconfig

.golangci.yml

@@ -0,0 +1,61 @@
+version: "2"
+run:
+  allow-parallel-runners: true
+linters:
+  default: none
+  enable:
+    - copyloopvar
+    - dupl
+    - errcheck
+    - ginkgolinter
+    - goconst
+    - gocyclo
+    - govet
+    - ineffassign
+    - lll
+    - modernize
+    - misspell
+    - nakedret
+    - prealloc
+    - revive
+    - staticcheck
+    - unconvert
+    - unparam
+    - unused
+    - logcheck
+  settings:
+    custom:
+      logcheck:
+        type: "module"
+        description: Checks Go logging calls for Kubernetes logging conventions.
+    revive:
+      rules:
+        - name: comment-spacings
+        - name: import-shadowing
+    modernize:
+      disable:
+        - omitzero
+  exclusions:
+    generated: lax
+    rules:
+      - linters:
+          - lll
+        path: api/*
+      - linters:
+          - dupl
+          - lll
+        path: internal/*
+    paths:
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  enable:
+    - gofmt
+    - goimports
+  exclusions:
+    generated: lax
+    paths:
+      - third_party$
+      - builtin$
+      - examples$

AGENTS.md

@@ -0,0 +1,342 @@
+# loco-operator - AI Agent Guide
+
+## Project Structure
+
+**Single-group layout (default):**
+
+```
+cmd/main.go                    Manager entry (registers controllers/webhooks)
+api/<version>/*_types.go       CRD schemas (+kubebuilder markers)
+api/<version>/zz_generated.*   Auto-generated (DO NOT EDIT)
+internal/controller/*          Reconciliation logic
+internal/webhook/*             Validation/defaulting (if present)
+config/crd/bases/*             Generated CRDs (DO NOT EDIT)
+config/rbac/role.yaml          Generated RBAC (DO NOT EDIT)
+config/samples/*               Example CRs (edit these)
+Makefile                       Build/test/deploy commands
+PROJECT                        Kubebuilder metadata Auto-generated (DO NOT EDIT)
+```
+
+**Multi-group layout** (for projects with multiple API groups):
+
+```
+api/<group>/<version>/*_types.go       CRD schemas by group
+internal/controller/<group>/*          Controllers by group
+internal/webhook/<group>/<version>/*   Webhooks by group and version (if present)
+```
+
+Multi-group layout organizes APIs by group name (e.g., `batch`, `apps`). Check the `PROJECT` file for `multigroup: true`.
+
+**To convert to multi-group layout:**
+
+1. Run: `kubebuilder edit --multigroup=true`
+2. Move APIs: `mkdir -p api/<group> && mv api/<version> api/<group>/`
+3. Move controllers: `mkdir -p internal/controller/<group> && mv internal/controller/*.go internal/controller/<group>/`
+4. Move webhooks (if present): `mkdir -p internal/webhook/<group> && mv internal/webhook/<version> internal/webhook/<group>/`
+5. Update import paths in all files
+6. Fix `path` in `PROJECT` file for each resource
+7. Update test suite CRD paths (add one more `..` to relative paths)
+
+## Critical Rules
+
+### Never Edit These (Auto-Generated)
+
+- `config/crd/bases/*.yaml` - from `make manifests`
+- `config/rbac/role.yaml` - from `make manifests`
+- `config/webhook/manifests.yaml` - from `make manifests`
+- `**/zz_generated.*.go` - from `make generate`
+- `PROJECT` - from `kubebuilder [OPTIONS]`
+
+### Never Remove Scaffold Markers
+
+Do NOT delete `// +kubebuilder:scaffold:*` comments. CLI injects code at these markers.
+
+### Keep Project Structure
+
+Do not move files around. The CLI expects files in specific locations.
+
+### Always Use CLI Commands
+
+Always use `kubebuilder create api` and `kubebuilder create webhook` to scaffold. Do NOT create files manually.
+
+### E2E Tests Require an Isolated Kind Cluster
+
+The e2e tests are designed to validate the solution in an isolated environment (similar to GitHub Actions CI).
+Ensure you run them against a dedicated [Kind](https://kind.sigs.k8s.io/) cluster (not your “real” dev/prod cluster).
+
+## After Making Changes
+
+**After editing `*_types.go` or markers:**
+
+```
+make manifests  # Regenerate CRDs/RBAC from markers
+make generate   # Regenerate DeepCopy methods
+```
+
+**After editing `*.go` files:**
+
+```
+make lint-fix   # Auto-fix code style
+make test       # Run unit tests
+```
+
+## CLI Commands Cheat Sheet
+
+### Create API (your own types)
+
+```bash
+kubebuilder create api --group <group> --version <version> --kind <Kind>
+```
+
+### Deploy Image Plugin (scaffold to deploy/manage ANY container image)
+
+Generate a controller that deploys and manages a container image (nginx, redis, memcached, your app, etc.):
+
+```bash
+# Example: deploying memcached
+kubebuilder create api --group example.com --version v1alpha1 --kind Memcached \
+  --image=memcached:alpine \
+  --plugins=deploy-image.go.kubebuilder.io/v1-alpha
+```
+
+Scaffolds good-practice code: reconciliation logic, status conditions, finalizers, RBAC. Use as a reference implementation.
+
+### Create Webhooks
+
+```bash
+# Validation + defaulting
+kubebuilder create webhook --group <group> --version <version> --kind <Kind> \
+  --defaulting --programmatic-validation
+
+# Conversion webhook (for multi-version APIs)
+kubebuilder create webhook --group <group> --version v1 --kind <Kind> \
+  --conversion --spoke v2
+```
+
+### Controller for Core Kubernetes Types
+
+```bash
+# Watch Pods
+kubebuilder create api --group core --version v1 --kind Pod \
+  --controller=true --resource=false
+
+# Watch Deployments
+kubebuilder create api --group apps --version v1 --kind Deployment \
+  --controller=true --resource=false
+```
+
+### Controller for External Types (e.g., from other operators)
+
+Watch resources from external APIs (cert-manager, Argo CD, Istio, etc.):
+
+```bash
+# Example: watching cert-manager Certificate resources
+kubebuilder create api \
+  --group cert-manager --version v1 --kind Certificate \
+  --controller=true --resource=false \
+  --external-api-path=github.com/cert-manager/cert-manager/pkg/apis/certmanager/v1 \
+  --external-api-domain=io \
+  --external-api-module=github.com/cert-manager/cert-manager
+```
+
+**Note:** Use `--external-api-module=<module>@<version>` only if you need a specific version. Otherwise, omit `@<version>` to use what's in go.mod.
+
+### Webhook for External Types
+
+```bash
+# Example: validating external resources
+kubebuilder create webhook \
+  --group cert-manager --version v1 --kind Issuer \
+  --defaulting \
+  --external-api-path=github.com/cert-manager/cert-manager/pkg/apis/certmanager/v1 \
+  --external-api-domain=io \
+  --external-api-module=github.com/cert-manager/cert-manager
+```
+
+## Testing & Development
+
+```bash
+make test              # Run unit tests (uses envtest: real K8s API + etcd)
+make run               # Run locally (uses current kubeconfig context)
+```
+
+Tests use **Ginkgo + Gomega** (BDD style). Check `suite_test.go` for setup.
+
+## Deployment Workflow
+
+```bash
+# 1. Regenerate manifests
+make manifests generate
+
+# 2. Build & deploy
+export IMG=<registry>/<project>:tag
+make docker-build docker-push IMG=$IMG  # Or: kind load docker-image $IMG --name <cluster>
+make deploy IMG=$IMG
+
+# 3. Test
+kubectl apply -k config/samples/
+
+# 4. Debug
+kubectl logs -n <project>-system deployment/<project>-controller-manager -c manager -f
+```
+
+### API Design
+
+**Key markers for** `api/<version>/*_types.go`:
+
+```go
+// +kubebuilder:object:root=true
+// +kubebuilder:subresource:status
+// +kubebuilder:resource:scope=Namespaced
+// +kubebuilder:printcolumn:name="Status",type=string,JSONPath=".status.conditions[?(@.type=='Ready')].status"
+
+// On fields:
+// +kubebuilder:validation:Required
+// +kubebuilder:validation:Minimum=1
+// +kubebuilder:validation:MaxLength=100
+// +kubebuilder:validation:Pattern="^[a-z]+$"
+// +kubebuilder:default="value"
+```
+
+- **Use** `metav1.Condition` for status (not custom string fields)
+- **Use predefined types**: `metav1.Time` instead of `string` for dates
+- **Follow K8s API conventions**: Standard field names (`spec`, `status`, `metadata`)
+
+### Controller Design
+
+**RBAC markers in** `internal/controller/*_controller.go`:
+
+```go
+// +kubebuilder:rbac:groups=mygroup.example.com,resources=mykinds,verbs=get;list;watch;create;update;patch;delete
+// +kubebuilder:rbac:groups=mygroup.example.com,resources=mykinds/status,verbs=get;update;patch
+// +kubebuilder:rbac:groups=mygroup.example.com,resources=mykinds/finalizers,verbs=update
+// +kubebuilder:rbac:groups=events.k8s.io,resources=events,verbs=create;patch
+// +kubebuilder:rbac:groups=apps,resources=deployments,verbs=get;list;watch;create;update;patch;delete
+```
+
+**Implementation rules:**
+
+- **Idempotent reconciliation**: Safe to run multiple times
+- **Re-fetch before updates**: `r.Get(ctx, req.NamespacedName, obj)` before `r.Update` to avoid conflicts
+- **Structured logging**: `log := log.FromContext(ctx); log.Info("msg", "key", val)`
+- **Owner references**: Enable automatic garbage collection (`SetControllerReference`)
+- **Watch secondary resources**: Use `.Owns()` or `.Watches()`, not just `RequeueAfter`
+- **Finalizers**: Clean up external resources (buckets, VMs, DNS entries)
+
+### Logging
+
+**Follow Kubernetes logging message style guidelines:**
+
+- Start from a capital letter
+- Do not end the message with a period
+- Active voice: subject present (`"Deployment could not create Pod"`) or omitted (`"Could not create Pod"`)
+- Past tense: `"Could not delete Pod"` not `"Cannot delete Pod"`
+- Specify object type: `"Deleted Pod"` not `"Deleted"`
+- Balanced key-value pairs
+
+```go
+log.Info("Starting reconciliation")
+log.Info("Created Deployment", "name", deploy.Name)
+log.Error(err, "Failed to create Pod", "name", name)
+```
+
+**Reference:** https://github.com/kubernetes/community/blob/master/contributors/devel/sig-instrumentation/logging.md#message-style-guidelines
+
+### Webhooks
+
+- **Create all types together**: `--defaulting --programmatic-validation --conversion`
+- **When`--force`is used**: Backup custom logic first, then restore after scaffolding
+- **For multi-version APIs**: Use hub-and-spoke pattern (`--conversion --spoke v2`)
+  - Hub version: Usually oldest stable version (v1)
+  - Spoke versions: Newer versions that convert to/from hub (v2, v3)
+  - Example: `--group crew --version v1 --kind Captain --conversion --spoke v2` (v1 is hub, v2 is spoke)
+
+### Learning from Examples
+
+The **deploy-image plugin** scaffolds a complete controller following good practices. Use it as a reference implementation:
+
+```bash
+kubebuilder create api --group example --version v1alpha1 --kind MyApp \
+  --image=<your-image> --plugins=deploy-image.go.kubebuilder.io/v1-alpha
+```
+
+Generated code includes: status conditions (`metav1.Condition`), finalizers, owner references, events, idempotent reconciliation.
+
+## Distribution Options
+
+### Option 1: YAML Bundle (Kustomize)
+
+```bash
+# Generate dist/install.yaml from Kustomize manifests
+make build-installer IMG=<registry>/<project>:tag
+```
+
+**Key points:**
+
+- The `dist/install.yaml` is generated from Kustomize manifests (CRDs, RBAC, Deployment)
+- Commit this file to your repository for easy distribution
+- Users only need `kubectl` to install (no additional tools required)
+
+**Example:** Users install with a single command:
+
+```bash
+kubectl apply -f https://raw.githubusercontent.com/<org>/<repo>/<tag>/dist/install.yaml
+```
+
+### Option 2: Helm Chart
+
+```bash
+kubebuilder edit --plugins=helm/v2-alpha                      # Generates dist/chart/ (default)
+kubebuilder edit --plugins=helm/v2-alpha --output-dir=charts  # Generates charts/chart/
+```
+
+**For development:**
+
+```bash
+make helm-deploy IMG=<registry>/<project>:<tag>          # Deploy manager via Helm
+make helm-deploy IMG=$IMG HELM_EXTRA_ARGS="--set ..."    # Deploy with custom values
+make helm-status                                         # Show release status
+make helm-uninstall                                      # Remove release
+make helm-history                                        # View release history
+make helm-rollback                                       # Rollback to previous version
+```
+
+**For end users/production:**
+
+```bash
+helm install my-release ./<output-dir>/chart/ --namespace <ns> --create-namespace
+```
+
+**Important:** If you add webhooks or modify manifests after initial chart generation:
+
+1. Backup any customizations in `<output-dir>/chart/values.yaml` and `<output-dir>/chart/manager/manager.yaml`
+2. Re-run: `kubebuilder edit --plugins=helm/v2-alpha --force` (use same `--output-dir` if customized)
+3. Manually restore your custom values from the backup
+
+### Publish Container Image
+
+```bash
+export IMG=<registry>/<project>:<version>
+make docker-build docker-push IMG=$IMG
+```
+
+## References
+
+### Essential Reading
+
+- **Kubebuilder Book**: https://book.kubebuilder.io (comprehensive guide)
+- **controller-runtime FAQ**: https://github.com/kubernetes-sigs/controller-runtime/blob/main/FAQ.md (common patterns and questions)
+- **Good Practices**: https://book.kubebuilder.io/reference/good-practices.html (why reconciliation is idempotent, status conditions, etc.)
+- **Logging Conventions**: https://github.com/kubernetes/community/blob/master/contributors/devel/sig-instrumentation/logging.md#message-style-guidelines (message style, verbosity levels)
+
+### API Design & Implementation
+
+- **API Conventions**: https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/api-conventions.md
+- **Operator Pattern**: https://kubernetes.io/docs/concepts/extend-kubernetes/operator/
+- **Markers Reference**: https://book.kubebuilder.io/reference/markers.html
+
+### Tools & Libraries
+
+- **controller-runtime**: https://github.com/kubernetes-sigs/controller-runtime
+- **controller-tools**: https://github.com/kubernetes-sigs/controller-tools
+- **Kubebuilder Repo**: https://github.com/kubernetes-sigs/kubebuilder

Containerfile

@@ -0,0 +1,31 @@
+# Build the manager binary
+FROM golang:1.25 AS builder
+ARG TARGETOS
+ARG TARGETARCH
+
+WORKDIR /workspace
+# Copy the Go Modules manifests
+COPY go.mod go.mod
+COPY go.sum go.sum
+# cache deps before building and copying source so that we don't need to re-download as much
+# and so that source changes don't invalidate our downloaded layer
+RUN go mod download
+
+# Copy the Go source (relies on .dockerignore to filter)
+COPY . .
+
+# Build
+# the GOARCH has no default value to allow the binary to be built according to the host where the command
+# was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO
+# the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore,
+# by leaving it empty we can ensure that the container and binary shipped on it will have the same platform.
+RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/main.go
+
+# Use distroless as minimal base image to package the manager binary
+# Refer to https://github.com/GoogleContainerTools/distroless for more details
+FROM gcr.io/distroless/static:nonroot
+WORKDIR /
+COPY --from=builder /workspace/manager .
+USER 65532:65532
+
+ENTRYPOINT ["/manager"]

LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1.  Definitions.
+
+    "License" shall mean the terms and conditions for use, reproduction,
+    and distribution as defined by Sections 1 through 9 of this document.
+
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+    the copyright owner that is granting the License.
+
+    "Legal Entity" shall mean the union of the acting entity and all
+    other entities that control, are controlled by, or are under common
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+    direction or management of such entity, whether by contract or
+    otherwise, or (ii) ownership of fifty percent (50%) or more of the
+    outstanding shares, or (iii) beneficial ownership of such entity.
+
+    "You" (or "Your") shall mean an individual or Legal Entity
+    exercising permissions granted by this License.
+
+    "Source" form shall mean the preferred form for making modifications,
+    including but not limited to software source code, documentation
+    source, and configuration files.
+
+    "Object" form shall mean any form resulting from mechanical
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+
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+    liable to You for damages, including any direct, indirect, special,
+    incidental, or consequential damages of any character arising as a
+    result of this License or out of the use or inability to use the
+    Work (including but not limited to damages for loss of goodwill,
+    work stoppage, computer failure or malfunction, or any and all
+    other commercial damages or losses), even if such Contributor
+    has been advised of the possibility of such damages.
+
+9.  Accepting Warranty or Additional Liability. While redistributing
+    the Work or Derivative Works thereof, You may choose to offer,
+    and charge a fee for, acceptance of support, warranty, indemnity,
+    or other liability obligations and/or rights consistent with this
+    License. However, in accepting such obligations, You may act only
+    on Your own behalf and on Your sole responsibility, not on behalf
+    of any other Contributor, and only if You agree to indemnify,
+    defend, and hold each Contributor harmless for any liability
+    incurred by, or claims asserted against, such Contributor by reason
+    of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+Copyright 2026 LocoStack
+
+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.

Makefile

@@ -0,0 +1,255 @@
+# Image URL to use all building/pushing image targets
+IMG ?= controller:latest
+
+# Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set)
+ifeq (,$(shell go env GOBIN))
+GOBIN=$(shell go env GOPATH)/bin
+else
+GOBIN=$(shell go env GOBIN)
+endif
+
+# CONTAINER_TOOL defines the container tool to be used for building images.
+# Be aware that the target commands are only tested with Docker which is
+# scaffolded by default. However, you might want to replace it to use other
+# tools. (i.e. podman)
+CONTAINER_TOOL ?= docker
+
+# Setting SHELL to bash allows bash commands to be executed by recipes.
+# Options are set to exit when a recipe line exits non-zero or a piped command fails.
+SHELL = /usr/bin/env bash -o pipefail
+.SHELLFLAGS = -ec
+
+.PHONY: all
+all: build
+
+##@ General
+
+# The help target prints out all targets with their descriptions organized
+# beneath their categories. The categories are represented by '##@' and the
+# target descriptions by '##'. The awk command is responsible for reading the
+# entire set of makefiles included in this invocation, looking for lines of the
+# file as xyz: ## something, and then pretty-format the target and help. Then,
+# if there's a line with ##@ something, that gets pretty-printed as a category.
+# More info on the usage of ANSI control characters for terminal formatting:
+# https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_parameters
+# More info on the awk command:
+# http://linuxcommand.org/lc3_adv_awk.php
+
+.PHONY: help
+help: ## Display this help.
+	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m<target>\033[0m\n"} /^[a-zA-Z_0-9-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)
+
+##@ Development
+
+.PHONY: manifests
+manifests: controller-gen ## Generate WebhookConfiguration, ClusterRole and CustomResourceDefinition objects.
+	"$(CONTROLLER_GEN)" rbac:roleName=manager-role crd webhook paths="./..." output:crd:artifacts:config=config/crd/bases
+
+.PHONY: generate
+generate: controller-gen ## Generate code containing DeepCopy, DeepCopyInto, and DeepCopyObject method implementations.
+	"$(CONTROLLER_GEN)" object:headerFile="hack/boilerplate.go.txt" paths="./..."
+
+.PHONY: fmt
+fmt: ## Run go fmt against code.
+	go fmt ./...
+
+.PHONY: vet
+vet: ## Run go vet against code.
+	go vet ./...
+
+.PHONY: test
+test: manifests generate fmt vet setup-envtest ## Run tests.
+	KUBEBUILDER_ASSETS="$(shell "$(ENVTEST)" use $(ENVTEST_K8S_VERSION) --bin-dir "$(LOCALBIN)" -p path)" go test $$(go list ./... | grep -v /e2e) -coverprofile cover.out
+
+# TODO(user): To use a different vendor for e2e tests, modify the setup under 'tests/e2e'.
+# The default setup assumes Kind is pre-installed and builds/loads the Manager Docker image locally.
+# CertManager is installed by default; skip with:
+# - CERT_MANAGER_INSTALL_SKIP=true
+KIND_CLUSTER ?= loco-operator-test-e2e
+
+.PHONY: setup-test-e2e
+setup-test-e2e: ## Set up a Kind cluster for e2e tests if it does not exist
+	@command -v $(KIND) >/dev/null 2>&1 || { \
+		echo "Kind is not installed. Please install Kind manually."; \
+		exit 1; \
+	}
+	@case "$$($(KIND) get clusters)" in \
+		*"$(KIND_CLUSTER)"*) \
+			echo "Kind cluster '$(KIND_CLUSTER)' already exists. Skipping creation." ;; \
+		*) \
+			echo "Creating Kind cluster '$(KIND_CLUSTER)'..."; \
+			$(KIND) create cluster --name $(KIND_CLUSTER) ;; \
+	esac
+
+.PHONY: test-e2e
+test-e2e: setup-test-e2e manifests generate fmt vet ## Run the e2e tests. Expected an isolated environment using Kind.
+	KIND=$(KIND) KIND_CLUSTER=$(KIND_CLUSTER) go test -tags=e2e ./test/e2e/ -v -ginkgo.v
+	$(MAKE) cleanup-test-e2e
+
+.PHONY: cleanup-test-e2e
+cleanup-test-e2e: ## Tear down the Kind cluster used for e2e tests
+	@$(KIND) delete cluster --name $(KIND_CLUSTER)
+
+.PHONY: lint
+lint: golangci-lint ## Run golangci-lint linter
+	"$(GOLANGCI_LINT)" run
+
+.PHONY: lint-fix
+lint-fix: golangci-lint ## Run golangci-lint linter and perform fixes
+	"$(GOLANGCI_LINT)" run --fix
+
+.PHONY: lint-config
+lint-config: golangci-lint ## Verify golangci-lint linter configuration
+	"$(GOLANGCI_LINT)" config verify
+
+##@ Build
+
+.PHONY: build
+build: manifests generate fmt vet ## Build manager binary.
+	go build -o bin/manager cmd/main.go
+
+.PHONY: run
+run: manifests generate fmt vet ## Run a controller from your host.
+	go run ./cmd/main.go
+
+# If you wish to build the manager image targeting other platforms you can use the --platform flag.
+# (i.e. docker build --platform linux/arm64). However, you must enable docker buildKit for it.
+# More info: https://docs.docker.com/develop/develop-images/build_enhancements/
+.PHONY: docker-build
+docker-build: ## Build docker image with the manager.
+	$(CONTAINER_TOOL) build -t ${IMG} .
+
+.PHONY: docker-push
+docker-push: ## Push docker image with the manager.
+	$(CONTAINER_TOOL) push ${IMG}
+
+# PLATFORMS defines the target platforms for the manager image be built to provide support to multiple
+# architectures. (i.e. make docker-buildx IMG=myregistry/mypoperator:0.0.1). To use this option you need to:
+# - be able to use docker buildx. More info: https://docs.docker.com/build/buildx/
+# - have enabled BuildKit. More info: https://docs.docker.com/develop/develop-images/build_enhancements/
+# - be able to push the image to your registry (i.e. if you do not set a valid value via IMG=<myregistry/image:<tag>> then the export will fail)
+# To adequately provide solutions that are compatible with multiple platforms, you should consider using this option.
+PLATFORMS ?= linux/arm64,linux/amd64,linux/s390x,linux/ppc64le
+.PHONY: docker-buildx
+docker-buildx: ## Build and push docker image for the manager for cross-platform support
+	# copy existing Dockerfile and insert --platform=${BUILDPLATFORM} into Dockerfile.cross, and preserve the original Dockerfile
+	sed -e '1 s/\(^FROM\)/FROM --platform=\$$\{BUILDPLATFORM\}/; t' -e ' 1,// s//FROM --platform=\$$\{BUILDPLATFORM\}/' Dockerfile > Dockerfile.cross
+	- $(CONTAINER_TOOL) buildx create --name loco-operator-builder
+	$(CONTAINER_TOOL) buildx use loco-operator-builder
+	- $(CONTAINER_TOOL) buildx build --push --platform=$(PLATFORMS) --tag ${IMG} -f Dockerfile.cross .
+	- $(CONTAINER_TOOL) buildx rm loco-operator-builder
+	rm Dockerfile.cross
+
+.PHONY: build-installer
+build-installer: manifests generate kustomize ## Generate a consolidated YAML with CRDs and deployment.
+	mkdir -p dist
+	cd config/manager && "$(KUSTOMIZE)" edit set image controller=${IMG}
+	"$(KUSTOMIZE)" build config/default > dist/install.yaml
+
+##@ Deployment
+
+ifndef ignore-not-found
+  ignore-not-found = false
+endif
+
+.PHONY: install
+install: manifests kustomize ## Install CRDs into the K8s cluster specified in ~/.kube/config.
+	@out="$$( "$(KUSTOMIZE)" build config/crd 2>/dev/null || true )"; \
+	if [ -n "$$out" ]; then echo "$$out" | "$(KUBECTL)" apply -f -; else echo "No CRDs to install; skipping."; fi
+
+.PHONY: uninstall
+uninstall: manifests kustomize ## Uninstall CRDs from the K8s cluster specified in ~/.kube/config. Call with ignore-not-found=true to ignore resource not found errors during deletion.
+	@out="$$( "$(KUSTOMIZE)" build config/crd 2>/dev/null || true )"; \
+	if [ -n "$$out" ]; then echo "$$out" | "$(KUBECTL)" delete --ignore-not-found=$(ignore-not-found) -f -; else echo "No CRDs to delete; skipping."; fi
+
+.PHONY: deploy
+deploy: manifests kustomize ## Deploy controller to the K8s cluster specified in ~/.kube/config.
+	cd config/manager && "$(KUSTOMIZE)" edit set image controller=${IMG}
+	"$(KUSTOMIZE)" build config/default | "$(KUBECTL)" apply -f -
+
+.PHONY: undeploy
+undeploy: kustomize ## Undeploy controller from the K8s cluster specified in ~/.kube/config. Call with ignore-not-found=true to ignore resource not found errors during deletion.
+	"$(KUSTOMIZE)" build config/default | "$(KUBECTL)" delete --ignore-not-found=$(ignore-not-found) -f -
+
+##@ Dependencies
+
+## Location to install dependencies to
+LOCALBIN ?= $(shell pwd)/bin
+$(LOCALBIN):
+	mkdir -p "$(LOCALBIN)"
+
+## Tool Binaries
+KUBECTL ?= kubectl
+KIND ?= kind
+KUSTOMIZE ?= $(LOCALBIN)/kustomize
+CONTROLLER_GEN ?= $(LOCALBIN)/controller-gen
+ENVTEST ?= $(LOCALBIN)/setup-envtest
+GOLANGCI_LINT = $(LOCALBIN)/golangci-lint
+
+## Tool Versions
+KUSTOMIZE_VERSION ?= v5.8.1
+CONTROLLER_TOOLS_VERSION ?= v0.20.1
+
+#ENVTEST_VERSION is the version of controller-runtime release branch to fetch the envtest setup script (i.e. release-0.20)
+ENVTEST_VERSION ?= $(shell v='$(call gomodver,sigs.k8s.io/controller-runtime)'; \
+  [ -n "$$v" ] || { echo "Set ENVTEST_VERSION manually (controller-runtime replace has no tag)" >&2; exit 1; }; \
+  printf '%s\n' "$$v" | sed -E 's/^v?([0-9]+)\.([0-9]+).*/release-\1.\2/')
+
+#ENVTEST_K8S_VERSION is the version of Kubernetes to use for setting up ENVTEST binaries (i.e. 1.31)
+ENVTEST_K8S_VERSION ?= $(shell v='$(call gomodver,k8s.io/api)'; \
+  [ -n "$$v" ] || { echo "Set ENVTEST_K8S_VERSION manually (k8s.io/api replace has no tag)" >&2; exit 1; }; \
+  printf '%s\n' "$$v" | sed -E 's/^v?[0-9]+\.([0-9]+).*/1.\1/')
+
+GOLANGCI_LINT_VERSION ?= v2.8.0
+.PHONY: kustomize
+kustomize: $(KUSTOMIZE) ## Download kustomize locally if necessary.
+$(KUSTOMIZE): $(LOCALBIN)
+	$(call go-install-tool,$(KUSTOMIZE),sigs.k8s.io/kustomize/kustomize/v5,$(KUSTOMIZE_VERSION))
+
+.PHONY: controller-gen
+controller-gen: $(CONTROLLER_GEN) ## Download controller-gen locally if necessary.
+$(CONTROLLER_GEN): $(LOCALBIN)
+	$(call go-install-tool,$(CONTROLLER_GEN),sigs.k8s.io/controller-tools/cmd/controller-gen,$(CONTROLLER_TOOLS_VERSION))
+
+.PHONY: setup-envtest
+setup-envtest: envtest ## Download the binaries required for ENVTEST in the local bin directory.
+	@echo "Setting up envtest binaries for Kubernetes version $(ENVTEST_K8S_VERSION)..."
+	@"$(ENVTEST)" use $(ENVTEST_K8S_VERSION) --bin-dir "$(LOCALBIN)" -p path || { \
+		echo "Error: Failed to set up envtest binaries for version $(ENVTEST_K8S_VERSION)."; \
+		exit 1; \
+	}
+
+.PHONY: envtest
+envtest: $(ENVTEST) ## Download setup-envtest locally if necessary.
+$(ENVTEST): $(LOCALBIN)
+	$(call go-install-tool,$(ENVTEST),sigs.k8s.io/controller-runtime/tools/setup-envtest,$(ENVTEST_VERSION))
+
+.PHONY: golangci-lint
+golangci-lint: $(GOLANGCI_LINT) ## Download golangci-lint locally if necessary.
+$(GOLANGCI_LINT): $(LOCALBIN)
+	$(call go-install-tool,$(GOLANGCI_LINT),github.com/golangci/golangci-lint/v2/cmd/golangci-lint,$(GOLANGCI_LINT_VERSION))
+	@test -f .custom-gcl.yml && { \
+		echo "Building custom golangci-lint with plugins..." && \
+		$(GOLANGCI_LINT) custom --destination $(LOCALBIN) --name golangci-lint-custom && \
+		mv -f $(LOCALBIN)/golangci-lint-custom $(GOLANGCI_LINT); \
+	} || true
+
+# go-install-tool will 'go install' any package with custom target and name of binary, if it doesn't exist
+# $1 - target path with name of binary
+# $2 - package url which can be installed
+# $3 - specific version of package
+define go-install-tool
+@[ -f "$(1)-$(3)" ] && [ "$$(readlink -- "$(1)" 2>/dev/null)" = "$(1)-$(3)" ] || { \
+set -e; \
+package=$(2)@$(3) ;\
+echo "Downloading $${package}" ;\
+rm -f "$(1)" ;\
+GOBIN="$(LOCALBIN)" go install $${package} ;\
+mv "$(LOCALBIN)/$$(basename "$(1)")" "$(1)-$(3)" ;\
+} ;\
+ln -sf "$$(realpath "$(1)-$(3)")" "$(1)"
+endef
+
+define gomodver
+$(shell go list -m -f '{{if .Replace}}{{.Replace.Version}}{{else}}{{.Version}}{{end}}' $(1) 2>/dev/null)
+endef

PROJECT

@@ -0,0 +1,11 @@
+# Code generated by tool. DO NOT EDIT.
+# This file is used to track the info used to scaffold your project
+# and allow the plugins properly work.
+# More info: https://book.kubebuilder.io/reference/project-config.html
+cliVersion: 4.13.1
+domain: locostack.com
+layout:
+- go.kubebuilder.io/v4
+projectName: loco-operator
+repo: github.com/LocoStack/loco-operator
+version: "3"

api/v1alpha1/groupversion_info.go

@@ -0,0 +1,40 @@
+/*
+Copyright 2026 LocoStack.
+
+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.
+*/
+
+// Package v1alpha1 contains API Schema definitions for the  v1alpha1 API group.
+// +kubebuilder:object:generate=true
+// +groupName=locostack.com
+package v1alpha1
+
+import (
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"sigs.k8s.io/controller-runtime/pkg/scheme"
+)
+
+var (
+	// SchemeGroupVersion is group version used to register these objects.
+	// This name is used by applyconfiguration generators (e.g. controller-gen).
+	SchemeGroupVersion = schema.GroupVersion{Group: "locostack.com", Version: "v1alpha1"}
+
+	// GroupVersion is an alias for SchemeGroupVersion, for backward compatibility.
+	GroupVersion = SchemeGroupVersion
+
+	// SchemeBuilder is used to add go types to the GroupVersionKind scheme.
+	SchemeBuilder = &scheme.Builder{GroupVersion: SchemeGroupVersion}
+
+	// AddToScheme adds the types in this group-version to the given scheme.
+	AddToScheme = SchemeBuilder.AddToScheme
+)

cmd/main.go

@@ -0,0 +1,193 @@
+/*
+Copyright 2026 LocoStack.
+
+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.
+*/
+
+package main
+
+import (
+	"crypto/tls"
+	"flag"
+	"os"
+
+	// Import all Kubernetes client auth plugins (e.g. Azure, GCP, OIDC, etc.)
+	// to ensure that exec-entrypoint and run can make use of them.
+	_ "k8s.io/client-go/plugin/pkg/client/auth"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/healthz"
+	"sigs.k8s.io/controller-runtime/pkg/log/zap"
+	"sigs.k8s.io/controller-runtime/pkg/metrics/filters"
+	metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
+	"sigs.k8s.io/controller-runtime/pkg/webhook"
+	// +kubebuilder:scaffold:imports
+)
+
+var (
+	scheme   = runtime.NewScheme()
+	setupLog = ctrl.Log.WithName("setup")
+)
+
+func init() {
+	utilruntime.Must(clientgoscheme.AddToScheme(scheme))
+
+	// +kubebuilder:scaffold:scheme
+}
+
+// nolint:gocyclo
+func main() {
+	var metricsAddr string
+	var metricsCertPath, metricsCertName, metricsCertKey string
+	var webhookCertPath, webhookCertName, webhookCertKey string
+	var enableLeaderElection bool
+	var probeAddr string
+	var secureMetrics bool
+	var enableHTTP2 bool
+	var tlsOpts []func(*tls.Config)
+	flag.StringVar(&metricsAddr, "metrics-bind-address", "0", "The address the metrics endpoint binds to. "+
+		"Use :8443 for HTTPS or :8080 for HTTP, or leave as 0 to disable the metrics service.")
+	flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
+	flag.BoolVar(&enableLeaderElection, "leader-elect", false,
+		"Enable leader election for controller manager. "+
+			"Enabling this will ensure there is only one active controller manager.")
+	flag.BoolVar(&secureMetrics, "metrics-secure", true,
+		"If set, the metrics endpoint is served securely via HTTPS. Use --metrics-secure=false to use HTTP instead.")
+	flag.StringVar(&webhookCertPath, "webhook-cert-path", "", "The directory that contains the webhook certificate.")
+	flag.StringVar(&webhookCertName, "webhook-cert-name", "tls.crt", "The name of the webhook certificate file.")
+	flag.StringVar(&webhookCertKey, "webhook-cert-key", "tls.key", "The name of the webhook key file.")
+	flag.StringVar(&metricsCertPath, "metrics-cert-path", "",
+		"The directory that contains the metrics server certificate.")
+	flag.StringVar(&metricsCertName, "metrics-cert-name", "tls.crt", "The name of the metrics server certificate file.")
+	flag.StringVar(&metricsCertKey, "metrics-cert-key", "tls.key", "The name of the metrics server key file.")
+	flag.BoolVar(&enableHTTP2, "enable-http2", false,
+		"If set, HTTP/2 will be enabled for the metrics and webhook servers")
+	opts := zap.Options{
+		Development: true,
+	}
+	opts.BindFlags(flag.CommandLine)
+	flag.Parse()
+
+	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
+
+	// if the enable-http2 flag is false (the default), http/2 should be disabled
+	// due to its vulnerabilities. More specifically, disabling http/2 will
+	// prevent from being vulnerable to the HTTP/2 Stream Cancellation and
+	// Rapid Reset CVEs. For more information see:
+	// - https://github.com/advisories/GHSA-qppj-fm5r-hxr3
+	// - https://github.com/advisories/GHSA-4374-p667-p6c8
+	disableHTTP2 := func(c *tls.Config) {
+		setupLog.Info("Disabling HTTP/2")
+		c.NextProtos = []string{"http/1.1"}
+	}
+
+	if !enableHTTP2 {
+		tlsOpts = append(tlsOpts, disableHTTP2)
+	}
+
+	// Initial webhook TLS options
+	webhookTLSOpts := tlsOpts
+	webhookServerOptions := webhook.Options{
+		TLSOpts: webhookTLSOpts,
+	}
+
+	if len(webhookCertPath) > 0 {
+		setupLog.Info("Initializing webhook certificate watcher using provided certificates",
+			"webhook-cert-path", webhookCertPath, "webhook-cert-name", webhookCertName, "webhook-cert-key", webhookCertKey)
+
+		webhookServerOptions.CertDir = webhookCertPath
+		webhookServerOptions.CertName = webhookCertName
+		webhookServerOptions.KeyName = webhookCertKey
+	}
+
+	webhookServer := webhook.NewServer(webhookServerOptions)
+
+	// Metrics endpoint is enabled in 'config/default/kustomization.yaml'. The Metrics options configure the server.
+	// More info:
+	// - https://pkg.go.dev/sigs.k8s.io/controller-runtime@v0.23.3/pkg/metrics/server
+	// - https://book.kubebuilder.io/reference/metrics.html
+	metricsServerOptions := metricsserver.Options{
+		BindAddress:   metricsAddr,
+		SecureServing: secureMetrics,
+		TLSOpts:       tlsOpts,
+	}
+
+	if secureMetrics {
+		// FilterProvider is used to protect the metrics endpoint with authn/authz.
+		// These configurations ensure that only authorized users and service accounts
+		// can access the metrics endpoint. The RBAC are configured in 'config/rbac/kustomization.yaml'. More info:
+		// https://pkg.go.dev/sigs.k8s.io/controller-runtime@v0.23.3/pkg/metrics/filters#WithAuthenticationAndAuthorization
+		metricsServerOptions.FilterProvider = filters.WithAuthenticationAndAuthorization
+	}
+
+	// If the certificate is not specified, controller-runtime will automatically
+	// generate self-signed certificates for the metrics server. While convenient for development and testing,
+	// this setup is not recommended for production.
+	//
+	// TODO(user): If you enable certManager, uncomment the following lines:
+	// - [METRICS-WITH-CERTS] at config/default/kustomization.yaml to generate and use certificates
+	// managed by cert-manager for the metrics server.
+	// - [PROMETHEUS-WITH-CERTS] at config/prometheus/kustomization.yaml for TLS certification.
+	if len(metricsCertPath) > 0 {
+		setupLog.Info("Initializing metrics certificate watcher using provided certificates",
+			"metrics-cert-path", metricsCertPath, "metrics-cert-name", metricsCertName, "metrics-cert-key", metricsCertKey)
+
+		metricsServerOptions.CertDir = metricsCertPath
+		metricsServerOptions.CertName = metricsCertName
+		metricsServerOptions.KeyName = metricsCertKey
+	}
+
+	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
+		Scheme:                 scheme,
+		Metrics:                metricsServerOptions,
+		WebhookServer:          webhookServer,
+		HealthProbeBindAddress: probeAddr,
+		LeaderElection:         enableLeaderElection,
+		LeaderElectionID:       "3fcced06.locostack.com",
+		// LeaderElectionReleaseOnCancel defines if the leader should step down voluntarily
+		// when the Manager ends. This requires the binary to immediately end when the
+		// Manager is stopped, otherwise, this setting is unsafe. Setting this significantly
+		// speeds up voluntary leader transitions as the new leader don't have to wait
+		// LeaseDuration time first.
+		//
+		// In the default scaffold provided, the program ends immediately after
+		// the manager stops, so would be fine to enable this option. However,
+		// if you are doing or is intended to do any operation such as perform cleanups
+		// after the manager stops then its usage might be unsafe.
+		// LeaderElectionReleaseOnCancel: true,
+	})
+	if err != nil {
+		setupLog.Error(err, "Failed to start manager")
+		os.Exit(1)
+	}
+
+	// +kubebuilder:scaffold:builder
+
+	if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
+		setupLog.Error(err, "Failed to set up health check")
+		os.Exit(1)
+	}
+	if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
+		setupLog.Error(err, "Failed to set up ready check")
+		os.Exit(1)
+	}
+
+	setupLog.Info("Starting manager")
+	if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
+		setupLog.Error(err, "Failed to run manager")
+		os.Exit(1)
+	}
+}

config/crd/kustomization.yaml

@@ -0,0 +1,15 @@
+# This kustomization.yaml is not intended to be run by itself,
+# since it depends on service name and namespace that are out of this kustomize package.
+# It should be run by config/default
+resources: []
+# +kubebuilder:scaffold:crdkustomizeresource
+
+patches:
+# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix.
+# patches here are for enabling the conversion webhook for each CRD
+# +kubebuilder:scaffold:crdkustomizewebhookpatch
+
+# [WEBHOOK] To enable webhook, uncomment the following section
+# the following config is for teaching kustomize how to do kustomization for CRDs.
+#configurations:
+#- kustomizeconfig.yaml

config/crd/kustomizeconfig.yaml

@@ -0,0 +1,12 @@
+# This file is for teaching kustomize how to substitute name and namespace reference in CRD
+nameReference:
+- kind: Service
+  version: v1
+  fieldSpecs:
+  - kind: CustomResourceDefinition
+    version: v1
+    group: apiextensions.k8s.io
+    path: spec/conversion/webhook/clientConfig/service/name
+
+varReference:
+- path: metadata/annotations

config/default/cert_metrics_manager_patch.yaml

@@ -0,0 +1,30 @@
+# This patch adds the args, volumes, and ports to allow the manager to use the metrics-server certs.
+
+# Add the volumeMount for the metrics-server certs
+- op: add
+  path: /spec/template/spec/containers/0/volumeMounts/-
+  value:
+    mountPath: /tmp/k8s-metrics-server/metrics-certs
+    name: metrics-certs
+    readOnly: true
+
+# Add the --metrics-cert-path argument for the metrics server
+- op: add
+  path: /spec/template/spec/containers/0/args/-
+  value: --metrics-cert-path=/tmp/k8s-metrics-server/metrics-certs
+
+# Add the metrics-server certs volume configuration
+- op: add
+  path: /spec/template/spec/volumes/-
+  value:
+    name: metrics-certs
+    secret:
+      secretName: metrics-server-cert
+      optional: false
+      items:
+        - key: ca.crt
+          path: ca.crt
+        - key: tls.crt
+          path: tls.crt
+        - key: tls.key
+          path: tls.key

config/default/kustomization.yaml

@@ -0,0 +1,234 @@
+# Adds namespace to all resources.
+namespace: loco-operator-system
+
+# Value of this field is prepended to the
+# names of all resources, e.g. a deployment named
+# "wordpress" becomes "alices-wordpress".
+# Note that it should also match with the prefix (text before '-') of the namespace
+# field above.
+namePrefix: loco-operator-
+
+# Labels to add to all resources and selectors.
+#labels:
+#- includeSelectors: true
+#  pairs:
+#    someName: someValue
+
+resources:
+- ../crd
+- ../rbac
+- ../manager
+# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix including the one in
+# crd/kustomization.yaml
+#- ../webhook
+# [CERTMANAGER] To enable cert-manager, uncomment all sections with 'CERTMANAGER'. 'WEBHOOK' components are required.
+#- ../certmanager
+# [PROMETHEUS] To enable prometheus monitor, uncomment all sections with 'PROMETHEUS'.
+#- ../prometheus
+# [METRICS] Expose the controller manager metrics service.
+- metrics_service.yaml
+# [NETWORK POLICY] Protect the /metrics endpoint and Webhook Server with NetworkPolicy.
+# Only Pod(s) running a namespace labeled with 'metrics: enabled' will be able to gather the metrics.
+# Only CR(s) which requires webhooks and are applied on namespaces labeled with 'webhooks: enabled' will
+# be able to communicate with the Webhook Server.
+#- ../network-policy
+
+# Uncomment the patches line if you enable Metrics
+patches:
+# [METRICS] The following patch will enable the metrics endpoint using HTTPS and the port :8443.
+# More info: https://book.kubebuilder.io/reference/metrics
+- path: manager_metrics_patch.yaml
+  target:
+    kind: Deployment
+
+# Uncomment the patches line if you enable Metrics and CertManager
+# [METRICS-WITH-CERTS] To enable metrics protected with certManager, uncomment the following line.
+# This patch will protect the metrics with certManager self-signed certs.
+#- path: cert_metrics_manager_patch.yaml
+#  target:
+#    kind: Deployment
+
+# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix including the one in
+# crd/kustomization.yaml
+#- path: manager_webhook_patch.yaml
+#  target:
+#    kind: Deployment
+
+# [CERTMANAGER] To enable cert-manager, uncomment all sections with 'CERTMANAGER' prefix.
+# Uncomment the following replacements to add the cert-manager CA injection annotations
+#replacements:
+# - source: # Uncomment the following block to enable certificates for metrics
+#     kind: Service
+#     version: v1
+#     name: controller-manager-metrics-service
+#     fieldPath: metadata.name
+#   targets:
+#     - select:
+#         kind: Certificate
+#         group: cert-manager.io
+#         version: v1
+#         name: metrics-certs
+#       fieldPaths:
+#         - spec.dnsNames.0
+#         - spec.dnsNames.1
+#       options:
+#         delimiter: '.'
+#         index: 0
+#         create: true
+#     - select: # Uncomment the following to set the Service name for TLS config in Prometheus ServiceMonitor
+#         kind: ServiceMonitor
+#         group: monitoring.coreos.com
+#         version: v1
+#         name: controller-manager-metrics-monitor
+#       fieldPaths:
+#         - spec.endpoints.0.tlsConfig.serverName
+#       options:
+#         delimiter: '.'
+#         index: 0
+#         create: true
+
+# - source:
+#     kind: Service
+#     version: v1
+#     name: controller-manager-metrics-service
+#     fieldPath: metadata.namespace
+#   targets:
+#     - select:
+#         kind: Certificate
+#         group: cert-manager.io
+#         version: v1
+#         name: metrics-certs
+#       fieldPaths:
+#         - spec.dnsNames.0
+#         - spec.dnsNames.1
+#       options:
+#         delimiter: '.'
+#         index: 1
+#         create: true
+#     - select: # Uncomment the following to set the Service namespace for TLS in Prometheus ServiceMonitor
+#         kind: ServiceMonitor
+#         group: monitoring.coreos.com
+#         version: v1
+#         name: controller-manager-metrics-monitor
+#       fieldPaths:
+#         - spec.endpoints.0.tlsConfig.serverName
+#       options:
+#         delimiter: '.'
+#         index: 1
+#         create: true
+
+# - source: # Uncomment the following block if you have any webhook
+#     kind: Service
+#     version: v1
+#     name: webhook-service
+#     fieldPath: .metadata.name # Name of the service
+#   targets:
+#     - select:
+#         kind: Certificate
+#         group: cert-manager.io
+#         version: v1
+#         name: serving-cert
+#       fieldPaths:
+#         - .spec.dnsNames.0
+#         - .spec.dnsNames.1
+#       options:
+#         delimiter: '.'
+#         index: 0
+#         create: true
+# - source:
+#     kind: Service
+#     version: v1
+#     name: webhook-service
+#     fieldPath: .metadata.namespace # Namespace of the service
+#   targets:
+#     - select:
+#         kind: Certificate
+#         group: cert-manager.io
+#         version: v1
+#         name: serving-cert
+#       fieldPaths:
+#         - .spec.dnsNames.0
+#         - .spec.dnsNames.1
+#       options:
+#         delimiter: '.'
+#         index: 1
+#         create: true
+
+# - source: # Uncomment the following block if you have a ValidatingWebhook (--programmatic-validation)
+#     kind: Certificate
+#     group: cert-manager.io
+#     version: v1
+#     name: serving-cert # This name should match the one in certificate.yaml
+#     fieldPath: .metadata.namespace # Namespace of the certificate CR
+#   targets:
+#     - select:
+#         kind: ValidatingWebhookConfiguration
+#       fieldPaths:
+#         - .metadata.annotations.[cert-manager.io/inject-ca-from]
+#       options:
+#         delimiter: '/'
+#         index: 0
+#         create: true
+# - source:
+#     kind: Certificate
+#     group: cert-manager.io
+#     version: v1
+#     name: serving-cert
+#     fieldPath: .metadata.name
+#   targets:
+#     - select:
+#         kind: ValidatingWebhookConfiguration
+#       fieldPaths:
+#         - .metadata.annotations.[cert-manager.io/inject-ca-from]
+#       options:
+#         delimiter: '/'
+#         index: 1
+#         create: true
+
+# - source: # Uncomment the following block if you have a DefaultingWebhook (--defaulting )
+#     kind: Certificate
+#     group: cert-manager.io
+#     version: v1
+#     name: serving-cert
+#     fieldPath: .metadata.namespace # Namespace of the certificate CR
+#   targets:
+#     - select:
+#         kind: MutatingWebhookConfiguration
+#       fieldPaths:
+#         - .metadata.annotations.[cert-manager.io/inject-ca-from]
+#       options:
+#         delimiter: '/'
+#         index: 0
+#         create: true
+# - source:
+#     kind: Certificate
+#     group: cert-manager.io
+#     version: v1
+#     name: serving-cert
+#     fieldPath: .metadata.name
+#   targets:
+#     - select:
+#         kind: MutatingWebhookConfiguration
+#       fieldPaths:
+#         - .metadata.annotations.[cert-manager.io/inject-ca-from]
+#       options:
+#         delimiter: '/'
+#         index: 1
+#         create: true
+
+# - source: # Uncomment the following block if you have a ConversionWebhook (--conversion)
+#     kind: Certificate
+#     group: cert-manager.io
+#     version: v1
+#     name: serving-cert
+#     fieldPath: .metadata.namespace # Namespace of the certificate CR
+#   targets: # Do not remove or uncomment the following scaffold marker; required to generate code for target CRD.
+# +kubebuilder:scaffold:crdkustomizecainjectionns
+# - source:
+#     kind: Certificate
+#     group: cert-manager.io
+#     version: v1
+#     name: serving-cert
+#     fieldPath: .metadata.name
+#   targets: # Do not remove or uncomment the following scaffold marker; required to generate code for target CRD.
+# +kubebuilder:scaffold:crdkustomizecainjectionname

config/default/manager_metrics_patch.yaml

@@ -0,0 +1,4 @@
+# This patch adds the args to allow exposing the metrics endpoint using HTTPS
+- op: add
+  path: /spec/template/spec/containers/0/args/0
+  value: --metrics-bind-address=:8443

config/default/metrics_service.yaml

@@ -0,0 +1,18 @@
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    control-plane: controller-manager
+    app.kubernetes.io/name: loco-operator
+    app.kubernetes.io/managed-by: kustomize
+  name: controller-manager-metrics-service
+  namespace: system
+spec:
+  ports:
+  - name: https
+    port: 8443
+    protocol: TCP
+    targetPort: 8443
+  selector:
+    control-plane: controller-manager
+    app.kubernetes.io/name: loco-operator

config/manager/kustomization.yaml

@@ -0,0 +1,2 @@
+resources:
+- manager.yaml

config/manager/manager.yaml

@@ -0,0 +1,99 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  labels:
+    control-plane: controller-manager
+    app.kubernetes.io/name: loco-operator
+    app.kubernetes.io/managed-by: kustomize
+  name: system
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: controller-manager
+  namespace: system
+  labels:
+    control-plane: controller-manager
+    app.kubernetes.io/name: loco-operator
+    app.kubernetes.io/managed-by: kustomize
+spec:
+  selector:
+    matchLabels:
+      control-plane: controller-manager
+      app.kubernetes.io/name: loco-operator
+  replicas: 1
+  template:
+    metadata:
+      annotations:
+        kubectl.kubernetes.io/default-container: manager
+      labels:
+        control-plane: controller-manager
+        app.kubernetes.io/name: loco-operator
+    spec:
+      # TODO(user): Uncomment the following code to configure the nodeAffinity expression
+      # according to the platforms which are supported by your solution.
+      # It is considered best practice to support multiple architectures. You can
+      # build your manager image using the makefile target docker-buildx.
+      # affinity:
+      #   nodeAffinity:
+      #     requiredDuringSchedulingIgnoredDuringExecution:
+      #       nodeSelectorTerms:
+      #         - matchExpressions:
+      #           - key: kubernetes.io/arch
+      #             operator: In
+      #             values:
+      #               - amd64
+      #               - arm64
+      #               - ppc64le
+      #               - s390x
+      #           - key: kubernetes.io/os
+      #             operator: In
+      #             values:
+      #               - linux
+      securityContext:
+        # Projects are configured by default to adhere to the "restricted" Pod Security Standards.
+        # This ensures that deployments meet the highest security requirements for Kubernetes.
+        # For more details, see: https://kubernetes.io/docs/concepts/security/pod-security-standards/#restricted
+        runAsNonRoot: true
+        seccompProfile:
+          type: RuntimeDefault
+      containers:
+      - command:
+        - /manager
+        args:
+          - --leader-elect
+          - --health-probe-bind-address=:8081
+        image: controller:latest
+        name: manager
+        ports: []
+        securityContext:
+          readOnlyRootFilesystem: true
+          allowPrivilegeEscalation: false
+          capabilities:
+            drop:
+            - "ALL"
+        livenessProbe:
+          httpGet:
+            path: /healthz
+            port: 8081
+          initialDelaySeconds: 15
+          periodSeconds: 20
+        readinessProbe:
+          httpGet:
+            path: /readyz
+            port: 8081
+          initialDelaySeconds: 5
+          periodSeconds: 10
+        # TODO(user): Configure the resources accordingly based on the project requirements.
+        # More info: https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/
+        resources:
+          limits:
+            cpu: 500m
+            memory: 128Mi
+          requests:
+            cpu: 10m
+            memory: 64Mi
+        volumeMounts: []
+      volumes: []
+      serviceAccountName: controller-manager
+      terminationGracePeriodSeconds: 10

config/network-policy/allow-metrics-traffic.yaml

@@ -0,0 +1,27 @@
+# This NetworkPolicy allows ingress traffic
+# with Pods running on namespaces labeled with 'metrics: enabled'. Only Pods on those
+# namespaces are able to gather data from the metrics endpoint.
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  labels:
+    app.kubernetes.io/name: loco-operator
+    app.kubernetes.io/managed-by: kustomize
+  name: allow-metrics-traffic
+  namespace: system
+spec:
+  podSelector:
+    matchLabels:
+      control-plane: controller-manager
+      app.kubernetes.io/name: loco-operator
+  policyTypes:
+    - Ingress
+  ingress:
+    # This allows ingress traffic from any namespace with the label metrics: enabled
+    - from:
+      - namespaceSelector:
+          matchLabels:
+            metrics: enabled  # Only from namespaces with this label
+      ports:
+        - port: 8443
+          protocol: TCP

config/network-policy/kustomization.yaml

@@ -0,0 +1,2 @@
+resources:
+- allow-metrics-traffic.yaml

config/prometheus/kustomization.yaml

@@ -0,0 +1,11 @@
+resources:
+- monitor.yaml
+
+# [PROMETHEUS-WITH-CERTS] The following patch configures the ServiceMonitor in ../prometheus
+# to securely reference certificates created and managed by cert-manager.
+# Additionally, ensure that you uncomment the [METRICS WITH CERTMANAGER] patch under config/default/kustomization.yaml
+# to mount the "metrics-server-cert" secret in the Manager Deployment.
+#patches:
+#  - path: monitor_tls_patch.yaml
+#    target:
+#      kind: ServiceMonitor

config/prometheus/monitor.yaml

@@ -0,0 +1,27 @@
+# Prometheus Monitor Service (Metrics)
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  labels:
+    control-plane: controller-manager
+    app.kubernetes.io/name: loco-operator
+    app.kubernetes.io/managed-by: kustomize
+  name: controller-manager-metrics-monitor
+  namespace: system
+spec:
+  endpoints:
+    - path: /metrics
+      port: https # Ensure this is the name of the port that exposes HTTPS metrics
+      scheme: https
+      bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
+      tlsConfig:
+        # TODO(user): The option insecureSkipVerify: true is not recommended for production since it disables
+        # certificate verification, exposing the system to potential man-in-the-middle attacks.
+        # For production environments, it is recommended to use cert-manager for automatic TLS certificate management.
+        # To apply this configuration, enable cert-manager and use the patch located at config/prometheus/servicemonitor_tls_patch.yaml,
+        # which securely references the certificate from the 'metrics-server-cert' secret.
+        insecureSkipVerify: true
+  selector:
+    matchLabels:
+      control-plane: controller-manager
+      app.kubernetes.io/name: loco-operator

config/prometheus/monitor_tls_patch.yaml

@@ -0,0 +1,19 @@
+# Patch for Prometheus ServiceMonitor to enable secure TLS configuration
+# using certificates managed by cert-manager
+- op: replace
+  path: /spec/endpoints/0/tlsConfig
+  value:
+    # SERVICE_NAME and SERVICE_NAMESPACE will be substituted by kustomize
+    serverName: SERVICE_NAME.SERVICE_NAMESPACE.svc
+    insecureSkipVerify: false
+    ca:
+      secret:
+        name: metrics-server-cert
+        key: ca.crt
+    cert:
+      secret:
+        name: metrics-server-cert
+        key: tls.crt
+    keySecret:
+      name: metrics-server-cert
+      key: tls.key

config/rbac/kustomization.yaml

@@ -0,0 +1,20 @@
+resources:
+# All RBAC will be applied under this service account in
+# the deployment namespace. You may comment out this resource
+# if your manager will use a service account that exists at
+# runtime. Be sure to update RoleBinding and ClusterRoleBinding
+# subjects if changing service account names.
+- service_account.yaml
+- role.yaml
+- role_binding.yaml
+- leader_election_role.yaml
+- leader_election_role_binding.yaml
+# The following RBAC configurations are used to protect
+# the metrics endpoint with authn/authz. These configurations
+# ensure that only authorized users and service accounts
+# can access the metrics endpoint. Comment the following
+# permissions if you want to disable this protection.
+# More info: https://book.kubebuilder.io/reference/metrics.html
+- metrics_auth_role.yaml
+- metrics_auth_role_binding.yaml
+- metrics_reader_role.yaml

config/rbac/leader_election_role.yaml

@@ -0,0 +1,40 @@
+# permissions to do leader election.
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  labels:
+    app.kubernetes.io/name: loco-operator
+    app.kubernetes.io/managed-by: kustomize
+  name: leader-election-role
+rules:
+- apiGroups:
+  - ""
+  resources:
+  - configmaps
+  verbs:
+  - get
+  - list
+  - watch
+  - create
+  - update
+  - patch
+  - delete
+- apiGroups:
+  - coordination.k8s.io
+  resources:
+  - leases
+  verbs:
+  - get
+  - list
+  - watch
+  - create
+  - update
+  - patch
+  - delete
+- apiGroups:
+  - ""
+  resources:
+  - events
+  verbs:
+  - create
+  - patch

config/rbac/leader_election_role_binding.yaml

@@ -0,0 +1,15 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  labels:
+    app.kubernetes.io/name: loco-operator
+    app.kubernetes.io/managed-by: kustomize
+  name: leader-election-rolebinding
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: leader-election-role
+subjects:
+- kind: ServiceAccount
+  name: controller-manager
+  namespace: system

config/rbac/metrics_auth_role.yaml

@@ -0,0 +1,17 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: metrics-auth-role
+rules:
+- apiGroups:
+  - authentication.k8s.io
+  resources:
+  - tokenreviews
+  verbs:
+  - create
+- apiGroups:
+  - authorization.k8s.io
+  resources:
+  - subjectaccessreviews
+  verbs:
+  - create

config/rbac/metrics_auth_role_binding.yaml

@@ -0,0 +1,12 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: metrics-auth-rolebinding
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: metrics-auth-role
+subjects:
+- kind: ServiceAccount
+  name: controller-manager
+  namespace: system

config/rbac/metrics_reader_role.yaml

@@ -0,0 +1,9 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: metrics-reader
+rules:
+- nonResourceURLs:
+  - "/metrics"
+  verbs:
+  - get

config/rbac/role.yaml

@@ -0,0 +1,11 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    app.kubernetes.io/name: loco-operator
+    app.kubernetes.io/managed-by: kustomize
+  name: manager-role
+rules:
+- apiGroups: [""]
+  resources: ["pods"]
+  verbs: ["get", "list", "watch"]

config/rbac/role_binding.yaml

@@ -0,0 +1,15 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  labels:
+    app.kubernetes.io/name: loco-operator
+    app.kubernetes.io/managed-by: kustomize
+  name: manager-rolebinding
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: manager-role
+subjects:
+- kind: ServiceAccount
+  name: controller-manager
+  namespace: system

config/rbac/service_account.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  labels:
+    app.kubernetes.io/name: loco-operator
+    app.kubernetes.io/managed-by: kustomize
+  name: controller-manager
+  namespace: system

config/samples/kustomization.yaml

@@ -0,0 +1,3 @@
+## Append samples of your project ##
+resources: []
+# +kubebuilder:scaffold:manifestskustomizesamples

go.mod

@@ -0,0 +1,100 @@
+module github.com/LocoStack/loco-operator
+
+go 1.25.3
+
+require (
+	github.com/onsi/ginkgo/v2 v2.27.2
+	github.com/onsi/gomega v1.38.2
+	k8s.io/apimachinery v0.35.0
+	k8s.io/client-go v0.35.0
+	sigs.k8s.io/controller-runtime v0.23.3
+)
+
+require (
+	cel.dev/expr v0.24.0 // indirect
+	github.com/Masterminds/semver/v3 v3.4.0 // indirect
+	github.com/antlr4-go/antlr/v4 v4.13.0 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/blang/semver/v4 v4.0.0 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/emicklei/go-restful/v3 v3.12.2 // indirect
+	github.com/evanphx/json-patch/v5 v5.9.11 // indirect
+	github.com/felixge/httpsnoop v1.0.4 // indirect
+	github.com/fsnotify/fsnotify v1.9.0 // indirect
+	github.com/fxamacker/cbor/v2 v2.9.0 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/go-logr/zapr v1.3.0 // indirect
+	github.com/go-openapi/jsonpointer v0.21.0 // indirect
+	github.com/go-openapi/jsonreference v0.20.2 // indirect
+	github.com/go-openapi/swag v0.23.0 // indirect
+	github.com/go-task/slim-sprig/v3 v3.0.0 // indirect
+	github.com/google/btree v1.1.3 // indirect
+	github.com/google/cel-go v0.26.0 // indirect
+	github.com/google/gnostic-models v0.7.0 // indirect
+	github.com/google/go-cmp v0.7.0 // indirect
+	github.com/google/pprof v0.0.0-20250403155104-27863c87afa6 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.26.3 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_golang v1.23.2 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
+	github.com/prometheus/common v0.66.1 // indirect
+	github.com/prometheus/procfs v0.16.1 // indirect
+	github.com/spf13/cobra v1.10.0 // indirect
+	github.com/spf13/pflag v1.0.9 // indirect
+	github.com/stoewer/go-strcase v1.3.0 // indirect
+	github.com/x448/float16 v0.8.4 // indirect
+	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.61.0 // indirect
+	go.opentelemetry.io/otel v1.36.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.34.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.34.0 // indirect
+	go.opentelemetry.io/otel/metric v1.36.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.36.0 // indirect
+	go.opentelemetry.io/otel/trace v1.36.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.5.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.27.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.3 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
+	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 // indirect
+	golang.org/x/mod v0.29.0 // indirect
+	golang.org/x/net v0.47.0 // indirect
+	golang.org/x/oauth2 v0.30.0 // indirect
+	golang.org/x/sync v0.18.0 // indirect
+	golang.org/x/sys v0.38.0 // indirect
+	golang.org/x/term v0.37.0 // indirect
+	golang.org/x/text v0.31.0 // indirect
+	golang.org/x/time v0.9.0 // indirect
+	golang.org/x/tools v0.38.0 // indirect
+	gomodules.xyz/jsonpatch/v2 v2.4.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20250303144028-a0af3efb3deb // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250528174236-200df99c418a // indirect
+	google.golang.org/grpc v1.72.2 // indirect
+	google.golang.org/protobuf v1.36.8 // indirect
+	gopkg.in/evanphx/json-patch.v4 v4.13.0 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/api v0.35.0 // indirect
+	k8s.io/apiextensions-apiserver v0.35.0 // indirect
+	k8s.io/apiserver v0.35.0 // indirect
+	k8s.io/component-base v0.35.0 // indirect
+	k8s.io/klog/v2 v2.130.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20250910181357-589584f1c912 // indirect
+	k8s.io/utils v0.0.0-20251002143259-bc988d571ff4 // indirect
+	sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.31.2 // indirect
+	sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 // indirect
+	sigs.k8s.io/randfill v1.0.0 // indirect
+	sigs.k8s.io/structured-merge-diff/v6 v6.3.2-0.20260122202528-d9cc6641c482 // indirect
+	sigs.k8s.io/yaml v1.6.0 // indirect
+)

go.sum

@@ -0,0 +1,255 @@
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+k8s.io/component-base v0.35.0/go.mod h1:85SCX4UCa6SCFt6p3IKAPej7jSnF3L8EbfSyMZayJR0=
+k8s.io/klog/v2 v2.130.1 h1:n9Xl7H1Xvksem4KFG4PYbdQCQxqc/tTUyrgXaOhHSzk=
+k8s.io/klog/v2 v2.130.1/go.mod h1:3Jpz1GvMt720eyJH1ckRHK1EDfpxISzJ7I9OYgaDtPE=
+k8s.io/kube-openapi v0.0.0-20250910181357-589584f1c912 h1:Y3gxNAuB0OBLImH611+UDZcmKS3g6CthxToOb37KgwE=
+k8s.io/kube-openapi v0.0.0-20250910181357-589584f1c912/go.mod h1:kdmbQkyfwUagLfXIad1y2TdrjPFWp2Q89B3qkRwf/pQ=
+k8s.io/utils v0.0.0-20251002143259-bc988d571ff4 h1:SjGebBtkBqHFOli+05xYbK8YF1Dzkbzn+gDM4X9T4Ck=
+k8s.io/utils v0.0.0-20251002143259-bc988d571ff4/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
+sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.31.2 h1:jpcvIRr3GLoUoEKRkHKSmGjxb6lWwrBlJsXc+eUYQHM=
+sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.31.2/go.mod h1:Ve9uj1L+deCXFrPOk1LpFXqTg7LCFzFso6PA48q/XZw=
+sigs.k8s.io/controller-runtime v0.23.3 h1:VjB/vhoPoA9l1kEKZHBMnQF33tdCLQKJtydy4iqwZ80=
+sigs.k8s.io/controller-runtime v0.23.3/go.mod h1:B6COOxKptp+YaUT5q4l6LqUJTRpizbgf9KSRNdQGns0=
+sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 h1:IpInykpT6ceI+QxKBbEflcR5EXP7sU1kvOlxwZh5txg=
+sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730/go.mod h1:mdzfpAEoE6DHQEN0uh9ZbOCuHbLK5wOm7dK4ctXE9Tg=
+sigs.k8s.io/randfill v1.0.0 h1:JfjMILfT8A6RbawdsK2JXGBR5AQVfd+9TbzrlneTyrU=
+sigs.k8s.io/randfill v1.0.0/go.mod h1:XeLlZ/jmk4i1HRopwe7/aU3H5n1zNUcX6TM94b3QxOY=
+sigs.k8s.io/structured-merge-diff/v6 v6.3.2-0.20260122202528-d9cc6641c482 h1:2WOzJpHUBVrrkDjU4KBT8n5LDcj824eX0I5UKcgeRUs=
+sigs.k8s.io/structured-merge-diff/v6 v6.3.2-0.20260122202528-d9cc6641c482/go.mod h1:M3W8sfWvn2HhQDIbGWj3S099YozAsymCo/wrT5ohRUE=
+sigs.k8s.io/yaml v1.6.0 h1:G8fkbMSAFqgEFgh4b1wmtzDnioxFCUgTZhlbj5P9QYs=
+sigs.k8s.io/yaml v1.6.0/go.mod h1:796bPqUfzR/0jLAl6XjHl3Ck7MiyVv8dbTdyT3/pMf4=

hack/boilerplate.go.txt

@@ -0,0 +1,15 @@
+/*
+Copyright 2026 LocoStack.
+
+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.
+*/

internal/controller/suite_test.go

@@ -0,0 +1,118 @@
+/*
+Copyright 2026 LocoStack.
+
+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.
+*/
+
+package controller
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"k8s.io/client-go/kubernetes/scheme"
+	"k8s.io/client-go/rest"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/envtest"
+	logf "sigs.k8s.io/controller-runtime/pkg/log"
+	"sigs.k8s.io/controller-runtime/pkg/log/zap"
+
+	locostackcomv1alpha1 "github.com/LocoStack/loco-operator/api/v1alpha1"
+	// +kubebuilder:scaffold:imports
+)
+
+// These tests use Ginkgo (BDD-style Go testing framework). Refer to
+// http://onsi.github.io/ginkgo/ to learn more about Ginkgo.
+
+var (
+	ctx       context.Context
+	cancel    context.CancelFunc
+	testEnv   *envtest.Environment
+	cfg       *rest.Config
+	k8sClient client.Client
+)
+
+func TestControllers(t *testing.T) {
+	RegisterFailHandler(Fail)
+
+	RunSpecs(t, "Controller Suite")
+}
+
+var _ = BeforeSuite(func() {
+	logf.SetLogger(zap.New(zap.WriteTo(GinkgoWriter), zap.UseDevMode(true)))
+
+	ctx, cancel = context.WithCancel(context.TODO())
+
+	var err error
+	err = locostackcomv1alpha1.AddToScheme(scheme.Scheme)
+	Expect(err).NotTo(HaveOccurred())
+
+	// +kubebuilder:scaffold:scheme
+
+	By("bootstrapping test environment")
+	testEnv = &envtest.Environment{
+		CRDDirectoryPaths:     []string{filepath.Join("..", "..", "config", "crd", "bases")},
+		ErrorIfCRDPathMissing: true,
+	}
+
+	// Retrieve the first found binary directory to allow running tests from IDEs
+	if getFirstFoundEnvTestBinaryDir() != "" {
+		testEnv.BinaryAssetsDirectory = getFirstFoundEnvTestBinaryDir()
+	}
+
+	// cfg is defined in this file globally.
+	cfg, err = testEnv.Start()
+	Expect(err).NotTo(HaveOccurred())
+	Expect(cfg).NotTo(BeNil())
+
+	k8sClient, err = client.New(cfg, client.Options{Scheme: scheme.Scheme})
+	Expect(err).NotTo(HaveOccurred())
+	Expect(k8sClient).NotTo(BeNil())
+})
+
+var _ = AfterSuite(func() {
+	By("tearing down the test environment")
+	cancel()
+	Eventually(func() error {
+		return testEnv.Stop()
+	}, time.Minute, time.Second).Should(Succeed())
+})
+
+// getFirstFoundEnvTestBinaryDir locates the first binary in the specified path.
+// ENVTEST-based tests depend on specific binaries, usually located in paths set by
+// controller-runtime. When running tests directly (e.g., via an IDE) without using
+// Makefile targets, the 'BinaryAssetsDirectory' must be explicitly configured.
+//
+// This function streamlines the process by finding the required binaries, similar to
+// setting the 'KUBEBUILDER_ASSETS' environment variable. To ensure the binaries are
+// properly set up, run 'make setup-envtest' beforehand.
+func getFirstFoundEnvTestBinaryDir() string {
+	basePath := filepath.Join("..", "..", "bin", "k8s")
+	entries, err := os.ReadDir(basePath)
+	if err != nil {
+		logf.Log.Error(err, "Failed to read directory", "path", basePath)
+		return ""
+	}
+	for _, entry := range entries {
+		if entry.IsDir() {
+			return filepath.Join(basePath, entry.Name())
+		}
+	}
+	return ""
+}

test/e2e/e2e_suite_test.go

@@ -0,0 +1,101 @@
+//go:build e2e
+// +build e2e
+
+/*
+Copyright 2026 LocoStack.
+
+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.
+*/
+
+package e2e
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"testing"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"github.com/LocoStack/loco-operator/test/utils"
+)
+
+var (
+	// managerImage is the manager image to be built and loaded for testing.
+	managerImage = "example.com/loco-operator:v0.0.1"
+	// shouldCleanupCertManager tracks whether CertManager was installed by this suite.
+	shouldCleanupCertManager = false
+)
+
+// TestE2E runs the e2e test suite to validate the solution in an isolated environment.
+// The default setup requires Kind and CertManager.
+//
+// To skip CertManager installation, set: CERT_MANAGER_INSTALL_SKIP=true
+func TestE2E(t *testing.T) {
+	RegisterFailHandler(Fail)
+	_, _ = fmt.Fprintf(GinkgoWriter, "Starting loco-operator e2e test suite\n")
+	RunSpecs(t, "e2e suite")
+}
+
+var _ = BeforeSuite(func() {
+	By("building the manager image")
+	cmd := exec.Command("make", "docker-build", fmt.Sprintf("IMG=%s", managerImage))
+	_, err := utils.Run(cmd)
+	ExpectWithOffset(1, err).NotTo(HaveOccurred(), "Failed to build the manager image")
+
+	// TODO(user): If you want to change the e2e test vendor from Kind,
+	// ensure the image is built and available, then remove the following block.
+	By("loading the manager image on Kind")
+	err = utils.LoadImageToKindClusterWithName(managerImage)
+	ExpectWithOffset(1, err).NotTo(HaveOccurred(), "Failed to load the manager image into Kind")
+
+	setupCertManager()
+})
+
+var _ = AfterSuite(func() {
+	teardownCertManager()
+})
+
+// setupCertManager installs CertManager if needed for webhook tests.
+// Skips installation if CERT_MANAGER_INSTALL_SKIP=true or if already present.
+func setupCertManager() {
+	if os.Getenv("CERT_MANAGER_INSTALL_SKIP") == "true" {
+		_, _ = fmt.Fprintf(GinkgoWriter, "Skipping CertManager installation (CERT_MANAGER_INSTALL_SKIP=true)\n")
+		return
+	}
+
+	By("checking if CertManager is already installed")
+	if utils.IsCertManagerCRDsInstalled() {
+		_, _ = fmt.Fprintf(GinkgoWriter, "CertManager is already installed. Skipping installation.\n")
+		return
+	}
+
+	// Mark for cleanup before installation to handle interruptions and partial installs.
+	shouldCleanupCertManager = true
+
+	By("installing CertManager")
+	Expect(utils.InstallCertManager()).To(Succeed(), "Failed to install CertManager")
+}
+
+// teardownCertManager uninstalls CertManager if it was installed by setupCertManager.
+// This ensures we only remove what we installed.
+func teardownCertManager() {
+	if !shouldCleanupCertManager {
+		_, _ = fmt.Fprintf(GinkgoWriter, "Skipping CertManager cleanup (not installed by this suite)\n")
+		return
+	}
+
+	By("uninstalling CertManager")
+	utils.UninstallCertManager()
+}

test/e2e/e2e_test.go

@@ -0,0 +1,339 @@
+//go:build e2e
+// +build e2e
+
+/*
+Copyright 2026 LocoStack.
+
+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.
+*/
+
+package e2e
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"time"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"github.com/LocoStack/loco-operator/test/utils"
+)
+
+// namespace where the project is deployed in
+const namespace = "loco-operator-system"
+
+// serviceAccountName created for the project
+const serviceAccountName = "loco-operator-controller-manager"
+
+// metricsServiceName is the name of the metrics service of the project
+const metricsServiceName = "loco-operator-controller-manager-metrics-service"
+
+// metricsRoleBindingName is the name of the RBAC that will be created to allow get the metrics data
+const metricsRoleBindingName = "loco-operator-metrics-binding"
+
+var _ = Describe("Manager", Ordered, func() {
+	var controllerPodName string
+
+	// Before running the tests, set up the environment by creating the namespace,
+	// enforce the restricted security policy to the namespace, installing CRDs,
+	// and deploying the controller.
+	BeforeAll(func() {
+		By("creating manager namespace")
+		cmd := exec.Command("kubectl", "create", "ns", namespace)
+		_, err := utils.Run(cmd)
+		Expect(err).NotTo(HaveOccurred(), "Failed to create namespace")
+
+		By("labeling the namespace to enforce the restricted security policy")
+		cmd = exec.Command("kubectl", "label", "--overwrite", "ns", namespace,
+			"pod-security.kubernetes.io/enforce=restricted")
+		_, err = utils.Run(cmd)
+		Expect(err).NotTo(HaveOccurred(), "Failed to label namespace with restricted policy")
+
+		By("installing CRDs")
+		cmd = exec.Command("make", "install")
+		_, err = utils.Run(cmd)
+		Expect(err).NotTo(HaveOccurred(), "Failed to install CRDs")
+
+		By("deploying the controller-manager")
+		cmd = exec.Command("make", "deploy", fmt.Sprintf("IMG=%s", managerImage))
+		_, err = utils.Run(cmd)
+		Expect(err).NotTo(HaveOccurred(), "Failed to deploy the controller-manager")
+	})
+
+	// After all tests have been executed, clean up by undeploying the controller, uninstalling CRDs,
+	// and deleting the namespace.
+	AfterAll(func() {
+		By("cleaning up the curl pod for metrics")
+		cmd := exec.Command("kubectl", "delete", "pod", "curl-metrics", "-n", namespace)
+		_, _ = utils.Run(cmd)
+
+		By("undeploying the controller-manager")
+		cmd = exec.Command("make", "undeploy")
+		_, _ = utils.Run(cmd)
+
+		By("uninstalling CRDs")
+		cmd = exec.Command("make", "uninstall")
+		_, _ = utils.Run(cmd)
+
+		By("removing manager namespace")
+		cmd = exec.Command("kubectl", "delete", "ns", namespace)
+		_, _ = utils.Run(cmd)
+	})
+
+	// After each test, check for failures and collect logs, events,
+	// and pod descriptions for debugging.
+	AfterEach(func() {
+		specReport := CurrentSpecReport()
+		if specReport.Failed() {
+			By("Fetching controller manager pod logs")
+			cmd := exec.Command("kubectl", "logs", controllerPodName, "-n", namespace)
+			controllerLogs, err := utils.Run(cmd)
+			if err == nil {
+				_, _ = fmt.Fprintf(GinkgoWriter, "Controller logs:\n %s", controllerLogs)
+			} else {
+				_, _ = fmt.Fprintf(GinkgoWriter, "Failed to get Controller logs: %s", err)
+			}
+
+			By("Fetching Kubernetes events")
+			cmd = exec.Command("kubectl", "get", "events", "-n", namespace, "--sort-by=.lastTimestamp")
+			eventsOutput, err := utils.Run(cmd)
+			if err == nil {
+				_, _ = fmt.Fprintf(GinkgoWriter, "Kubernetes events:\n%s", eventsOutput)
+			} else {
+				_, _ = fmt.Fprintf(GinkgoWriter, "Failed to get Kubernetes events: %s", err)
+			}
+
+			By("Fetching curl-metrics logs")
+			cmd = exec.Command("kubectl", "logs", "curl-metrics", "-n", namespace)
+			metricsOutput, err := utils.Run(cmd)
+			if err == nil {
+				_, _ = fmt.Fprintf(GinkgoWriter, "Metrics logs:\n %s", metricsOutput)
+			} else {
+				_, _ = fmt.Fprintf(GinkgoWriter, "Failed to get curl-metrics logs: %s", err)
+			}
+
+			By("Fetching controller manager pod description")
+			cmd = exec.Command("kubectl", "describe", "pod", controllerPodName, "-n", namespace)
+			podDescription, err := utils.Run(cmd)
+			if err == nil {
+				fmt.Println("Pod description:\n", podDescription)
+			} else {
+				fmt.Println("Failed to describe controller pod")
+			}
+		}
+	})
+
+	SetDefaultEventuallyTimeout(2 * time.Minute)
+	SetDefaultEventuallyPollingInterval(time.Second)
+
+	Context("Manager", func() {
+		It("should run successfully", func() {
+			By("validating that the controller-manager pod is running as expected")
+			verifyControllerUp := func(g Gomega) {
+				// Get the name of the controller-manager pod
+				cmd := exec.Command("kubectl", "get",
+					"pods", "-l", "control-plane=controller-manager",
+					"-o", "go-template={{ range .items }}"+
+						"{{ if not .metadata.deletionTimestamp }}"+
+						"{{ .metadata.name }}"+
+						"{{ \"\\n\" }}{{ end }}{{ end }}",
+					"-n", namespace,
+				)
+
+				podOutput, err := utils.Run(cmd)
+				g.Expect(err).NotTo(HaveOccurred(), "Failed to retrieve controller-manager pod information")
+				podNames := utils.GetNonEmptyLines(podOutput)
+				g.Expect(podNames).To(HaveLen(1), "expected 1 controller pod running")
+				controllerPodName = podNames[0]
+				g.Expect(controllerPodName).To(ContainSubstring("controller-manager"))
+
+				// Validate the pod's status
+				cmd = exec.Command("kubectl", "get",
+					"pods", controllerPodName, "-o", "jsonpath={.status.phase}",
+					"-n", namespace,
+				)
+				output, err := utils.Run(cmd)
+				g.Expect(err).NotTo(HaveOccurred())
+				g.Expect(output).To(Equal("Running"), "Incorrect controller-manager pod status")
+			}
+			Eventually(verifyControllerUp).Should(Succeed())
+		})
+
+		It("should ensure the metrics endpoint is serving metrics", func() {
+			By("creating a ClusterRoleBinding for the service account to allow access to metrics")
+			cmd := exec.Command("kubectl", "create", "clusterrolebinding", metricsRoleBindingName,
+				"--clusterrole=loco-operator-metrics-reader",
+				fmt.Sprintf("--serviceaccount=%s:%s", namespace, serviceAccountName),
+			)
+			_, err := utils.Run(cmd)
+			Expect(err).NotTo(HaveOccurred(), "Failed to create ClusterRoleBinding")
+
+			By("validating that the metrics service is available")
+			cmd = exec.Command("kubectl", "get", "service", metricsServiceName, "-n", namespace)
+			_, err = utils.Run(cmd)
+			Expect(err).NotTo(HaveOccurred(), "Metrics service should exist")
+
+			By("getting the service account token")
+			token, err := serviceAccountToken()
+			Expect(err).NotTo(HaveOccurred())
+			Expect(token).NotTo(BeEmpty())
+
+			By("ensuring the controller pod is ready")
+			verifyControllerPodReady := func(g Gomega) {
+				cmd := exec.Command("kubectl", "get", "pod", controllerPodName, "-n", namespace,
+					"-o", "jsonpath={.status.conditions[?(@.type=='Ready')].status}")
+				output, err := utils.Run(cmd)
+				g.Expect(err).NotTo(HaveOccurred())
+				g.Expect(output).To(Equal("True"), "Controller pod not ready")
+			}
+			Eventually(verifyControllerPodReady, 3*time.Minute, time.Second).Should(Succeed())
+
+			By("verifying that the controller manager is serving the metrics server")
+			verifyMetricsServerStarted := func(g Gomega) {
+				cmd := exec.Command("kubectl", "logs", controllerPodName, "-n", namespace)
+				output, err := utils.Run(cmd)
+				g.Expect(err).NotTo(HaveOccurred())
+				g.Expect(output).To(ContainSubstring("Serving metrics server"),
+					"Metrics server not yet started")
+			}
+			Eventually(verifyMetricsServerStarted, 3*time.Minute, time.Second).Should(Succeed())
+
+			// +kubebuilder:scaffold:e2e-metrics-webhooks-readiness
+
+			By("creating the curl-metrics pod to access the metrics endpoint")
+			cmd = exec.Command("kubectl", "run", "curl-metrics", "--restart=Never",
+				"--namespace", namespace,
+				"--image=curlimages/curl:latest",
+				"--overrides",
+				fmt.Sprintf(`{
+					"spec": {
+						"containers": [{
+							"name": "curl",
+							"image": "curlimages/curl:latest",
+							"command": ["/bin/sh", "-c"],
+							"args": [
+								"for i in $(seq 1 30); do curl -v -k -H 'Authorization: Bearer %s' https://%s.%s.svc.cluster.local:8443/metrics && exit 0 || sleep 2; done; exit 1"
+							],
+							"securityContext": {
+								"readOnlyRootFilesystem": true,
+								"allowPrivilegeEscalation": false,
+								"capabilities": {
+									"drop": ["ALL"]
+								},
+								"runAsNonRoot": true,
+								"runAsUser": 1000,
+								"seccompProfile": {
+									"type": "RuntimeDefault"
+								}
+							}
+						}],
+						"serviceAccountName": "%s"
+					}
+				}`, token, metricsServiceName, namespace, serviceAccountName))
+			_, err = utils.Run(cmd)
+			Expect(err).NotTo(HaveOccurred(), "Failed to create curl-metrics pod")
+
+			By("waiting for the curl-metrics pod to complete.")
+			verifyCurlUp := func(g Gomega) {
+				cmd := exec.Command("kubectl", "get", "pods", "curl-metrics",
+					"-o", "jsonpath={.status.phase}",
+					"-n", namespace)
+				output, err := utils.Run(cmd)
+				g.Expect(err).NotTo(HaveOccurred())
+				g.Expect(output).To(Equal("Succeeded"), "curl pod in wrong status")
+			}
+			Eventually(verifyCurlUp, 5*time.Minute).Should(Succeed())
+
+			By("getting the metrics by checking curl-metrics logs")
+			verifyMetricsAvailable := func(g Gomega) {
+				metricsOutput, err := getMetricsOutput()
+				g.Expect(err).NotTo(HaveOccurred(), "Failed to retrieve logs from curl pod")
+				g.Expect(metricsOutput).NotTo(BeEmpty())
+				g.Expect(metricsOutput).To(ContainSubstring("< HTTP/1.1 200 OK"))
+			}
+			Eventually(verifyMetricsAvailable, 2*time.Minute).Should(Succeed())
+		})
+
+		// +kubebuilder:scaffold:e2e-webhooks-checks
+
+		// TODO: Customize the e2e test suite with scenarios specific to your project.
+		// Consider applying sample/CR(s) and check their status and/or verifying
+		// the reconciliation by using the metrics, i.e.:
+		// metricsOutput, err := getMetricsOutput()
+		// Expect(err).NotTo(HaveOccurred(), "Failed to retrieve logs from curl pod")
+		// Expect(metricsOutput).To(ContainSubstring(
+		//    fmt.Sprintf(`controller_runtime_reconcile_total{controller="%s",result="success"} 1`,
+		//    strings.ToLower(<Kind>),
+		// ))
+	})
+})
+
+// serviceAccountToken returns a token for the specified service account in the given namespace.
+// It uses the Kubernetes TokenRequest API to generate a token by directly sending a request
+// and parsing the resulting token from the API response.
+func serviceAccountToken() (string, error) {
+	const tokenRequestRawString = `{
+		"apiVersion": "authentication.k8s.io/v1",
+		"kind": "TokenRequest"
+	}`
+
+	// Temporary file to store the token request
+	secretName := fmt.Sprintf("%s-token-request", serviceAccountName)
+	tokenRequestFile := filepath.Join("/tmp", secretName)
+	err := os.WriteFile(tokenRequestFile, []byte(tokenRequestRawString), os.FileMode(0o644))
+	if err != nil {
+		return "", err
+	}
+
+	var out string
+	verifyTokenCreation := func(g Gomega) {
+		// Execute kubectl command to create the token
+		cmd := exec.Command("kubectl", "create", "--raw", fmt.Sprintf(
+			"/api/v1/namespaces/%s/serviceaccounts/%s/token",
+			namespace,
+			serviceAccountName,
+		), "-f", tokenRequestFile)
+
+		output, err := cmd.CombinedOutput()
+		g.Expect(err).NotTo(HaveOccurred())
+
+		// Parse the JSON output to extract the token
+		var token tokenRequest
+		err = json.Unmarshal(output, &token)
+		g.Expect(err).NotTo(HaveOccurred())
+
+		out = token.Status.Token
+	}
+	Eventually(verifyTokenCreation).Should(Succeed())
+
+	return out, err
+}
+
+// getMetricsOutput retrieves and returns the logs from the curl pod used to access the metrics endpoint.
+func getMetricsOutput() (string, error) {
+	By("getting the curl-metrics logs")
+	cmd := exec.Command("kubectl", "logs", "curl-metrics", "-n", namespace)
+	return utils.Run(cmd)
+}
+
+// tokenRequest is a simplified representation of the Kubernetes TokenRequest API response,
+// containing only the token field that we need to extract.
+type tokenRequest struct {
+	Status struct {
+		Token string `json:"token"`
+	} `json:"status"`
+}

test/utils/utils.go

@@ -0,0 +1,226 @@
+/*
+Copyright 2026 LocoStack.
+
+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.
+*/
+
+package utils
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+
+	. "github.com/onsi/ginkgo/v2" // nolint:revive,staticcheck
+)
+
+const (
+	certmanagerVersion = "v1.20.0"
+	certmanagerURLTmpl = "https://github.com/cert-manager/cert-manager/releases/download/%s/cert-manager.yaml"
+
+	defaultKindBinary  = "kind"
+	defaultKindCluster = "kind"
+)
+
+func warnError(err error) {
+	_, _ = fmt.Fprintf(GinkgoWriter, "warning: %v\n", err)
+}
+
+// Run executes the provided command within this context
+func Run(cmd *exec.Cmd) (string, error) {
+	dir, _ := GetProjectDir()
+	cmd.Dir = dir
+
+	if err := os.Chdir(cmd.Dir); err != nil {
+		_, _ = fmt.Fprintf(GinkgoWriter, "chdir dir: %q\n", err)
+	}
+
+	cmd.Env = append(os.Environ(), "GO111MODULE=on")
+	command := strings.Join(cmd.Args, " ")
+	_, _ = fmt.Fprintf(GinkgoWriter, "running: %q\n", command)
+	output, err := cmd.CombinedOutput()
+	if err != nil {
+		return string(output), fmt.Errorf("%q failed with error %q: %w", command, string(output), err)
+	}
+
+	return string(output), nil
+}
+
+// UninstallCertManager uninstalls the cert manager
+func UninstallCertManager() {
+	url := fmt.Sprintf(certmanagerURLTmpl, certmanagerVersion)
+	cmd := exec.Command("kubectl", "delete", "-f", url)
+	if _, err := Run(cmd); err != nil {
+		warnError(err)
+	}
+
+	// Delete leftover leases in kube-system (not cleaned by default)
+	kubeSystemLeases := []string{
+		"cert-manager-cainjector-leader-election",
+		"cert-manager-controller",
+	}
+	for _, lease := range kubeSystemLeases {
+		cmd = exec.Command("kubectl", "delete", "lease", lease,
+			"-n", "kube-system", "--ignore-not-found", "--force", "--grace-period=0")
+		if _, err := Run(cmd); err != nil {
+			warnError(err)
+		}
+	}
+}
+
+// InstallCertManager installs the cert manager bundle.
+func InstallCertManager() error {
+	url := fmt.Sprintf(certmanagerURLTmpl, certmanagerVersion)
+	cmd := exec.Command("kubectl", "apply", "-f", url)
+	if _, err := Run(cmd); err != nil {
+		return err
+	}
+	// Wait for cert-manager-webhook to be ready, which can take time if cert-manager
+	// was re-installed after uninstalling on a cluster.
+	cmd = exec.Command("kubectl", "wait", "deployment.apps/cert-manager-webhook",
+		"--for", "condition=Available",
+		"--namespace", "cert-manager",
+		"--timeout", "5m",
+	)
+
+	_, err := Run(cmd)
+	return err
+}
+
+// IsCertManagerCRDsInstalled checks if any Cert Manager CRDs are installed
+// by verifying the existence of key CRDs related to Cert Manager.
+func IsCertManagerCRDsInstalled() bool {
+	// List of common Cert Manager CRDs
+	certManagerCRDs := []string{
+		"certificates.cert-manager.io",
+		"issuers.cert-manager.io",
+		"clusterissuers.cert-manager.io",
+		"certificaterequests.cert-manager.io",
+		"orders.acme.cert-manager.io",
+		"challenges.acme.cert-manager.io",
+	}
+
+	// Execute the kubectl command to get all CRDs
+	cmd := exec.Command("kubectl", "get", "crds")
+	output, err := Run(cmd)
+	if err != nil {
+		return false
+	}
+
+	// Check if any of the Cert Manager CRDs are present
+	crdList := GetNonEmptyLines(output)
+	for _, crd := range certManagerCRDs {
+		for _, line := range crdList {
+			if strings.Contains(line, crd) {
+				return true
+			}
+		}
+	}
+
+	return false
+}
+
+// LoadImageToKindClusterWithName loads a local docker image to the kind cluster
+func LoadImageToKindClusterWithName(name string) error {
+	cluster := defaultKindCluster
+	if v, ok := os.LookupEnv("KIND_CLUSTER"); ok {
+		cluster = v
+	}
+	kindOptions := []string{"load", "docker-image", name, "--name", cluster}
+	kindBinary := defaultKindBinary
+	if v, ok := os.LookupEnv("KIND"); ok {
+		kindBinary = v
+	}
+	cmd := exec.Command(kindBinary, kindOptions...)
+	_, err := Run(cmd)
+	return err
+}
+
+// GetNonEmptyLines converts given command output string into individual objects
+// according to line breakers, and ignores the empty elements in it.
+func GetNonEmptyLines(output string) []string {
+	var res []string
+	elements := strings.SplitSeq(output, "\n")
+	for element := range elements {
+		if element != "" {
+			res = append(res, element)
+		}
+	}
+
+	return res
+}
+
+// GetProjectDir will return the directory where the project is
+func GetProjectDir() (string, error) {
+	wd, err := os.Getwd()
+	if err != nil {
+		return wd, fmt.Errorf("failed to get current working directory: %w", err)
+	}
+	wd = strings.ReplaceAll(wd, "/test/e2e", "")
+	return wd, nil
+}
+
+// UncommentCode searches for target in the file and remove the comment prefix
+// of the target content. The target content may span multiple lines.
+func UncommentCode(filename, target, prefix string) error {
+	// false positive
+	// nolint:gosec
+	content, err := os.ReadFile(filename)
+	if err != nil {
+		return fmt.Errorf("failed to read file %q: %w", filename, err)
+	}
+	strContent := string(content)
+
+	idx := strings.Index(strContent, target)
+	if idx < 0 {
+		return fmt.Errorf("unable to find the code %q to be uncommented", target)
+	}
+
+	out := new(bytes.Buffer)
+	_, err = out.Write(content[:idx])
+	if err != nil {
+		return fmt.Errorf("failed to write to output: %w", err)
+	}
+
+	scanner := bufio.NewScanner(bytes.NewBufferString(target))
+	if !scanner.Scan() {
+		return nil
+	}
+	for {
+		if _, err = out.WriteString(strings.TrimPrefix(scanner.Text(), prefix)); err != nil {
+			return fmt.Errorf("failed to write to output: %w", err)
+		}
+		// Avoid writing a newline in case the previous line was the last in target.
+		if !scanner.Scan() {
+			break
+		}
+		if _, err = out.WriteString("\n"); err != nil {
+			return fmt.Errorf("failed to write to output: %w", err)
+		}
+	}
+
+	if _, err = out.Write(content[idx+len(target):]); err != nil {
+		return fmt.Errorf("failed to write to output: %w", err)
+	}
+
+	// false positive
+	// nolint:gosec
+	if err = os.WriteFile(filename, out.Bytes(), 0644); err != nil {
+		return fmt.Errorf("failed to write file %q: %w", filename, err)
+	}
+
+	return nil
+}