feat: add metrics-server

README.md

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+# ArgoCD Apps Structure
+
+This repository uses the **App of Apps** pattern to manage multiple Kubernetes applications through ArgoCD.
+
+## Structure
+
+```
+.
+├── root-app.yaml           # Root application that manages all apps
+├── apps/                   # ArgoCD Application manifests
+│   └── metrics-server.yaml # Individual app definitions
+└── charts/                 # Helm values and configurations
+    └── metrics-server/
+        └── values.yaml     # Custom values for metrics-server
+```
+
+## Usage
+
+1. **Add this repository to ArgoCD:**
+   ```bash
+   kubectl apply -f root-app.yaml
+   ```
+
+2. **Add new applications:**
+   - Create a new Application manifest in `apps/`
+   - (Optional) Add custom Helm values in `charts/<app-name>/`
+   - Commit and push - ArgoCD will automatically sync
+
+## How it works
+
+- `root-app.yaml` is the entry point that watches the `apps/` directory
+- Any YAML files added to `apps/` will be automatically deployed by ArgoCD
+- Each app can reference external Helm charts or local manifests
+- Custom values can be provided in the `charts/` directory

apps/metrics-server.yaml

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+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: metrics-server
+  namespace: argocd
+  finalizers:
+    - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+  sources:
+    - repoURL: https://kubernetes-sigs.github.io/metrics-server/
+      chart: metrics-server
+      targetRevision: 3.13.0
+      helm:
+        valueFiles:
+          - $values/charts/metrics-server/values.yaml
+    - repoURL: https://github.com/lucas.mathieu/argocd-gitops.git
+      targetRevision: HEAD
+      ref: values
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: kube-system
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+    - CreateNamespace=true

charts/metrics-server/values.yaml

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+# Custom values for metrics-server
+# Uncomment and modify to override defaults
+# Reference the values file in apps/metrics-server.yaml to use this
+
+args:
+  - --kubelet-insecure-tls
+
+# Example of other common configurations:
+# replicas: 1
+# 
+# resources:
+#   requests:
+#     cpu: 100m
+#     memory: 200Mi
+#   limits:
+#     cpu: 500m
+#     memory: 500Mi

root-app.yaml

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+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: root-app
+  namespace: argocd
+  finalizers:
+    - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+  source:
+    repoURL: https://git.lucaasmth.me/lucas.mathieu/argocd-gitops.git
+    targetRevision: HEAD
+    path: apps
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: argocd
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+      allowEmpty: false
+    syncOptions:
+    - CreateNamespace=true