INIT(repo): monitoring stack setup

node-exporter/argocd/node-exporter.yaml

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+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: node-exporter
+  namespace: argocd
+  finalizers:
+    - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+
+  sources:
+    # Helm chart from external repository
+    - repoURL: https://prometheus-community.github.io/helm-charts
+      chart: prometheus-node-exporter
+      targetRevision: 4.39.0
+      helm:
+        valueFiles:
+          - $values/node-exporter/helm-values/node-exporter.yaml
+    # Values file from Git repository
+    - repoURL: https://gitea0213.kro.kr/bluemayne/infrastructure.git
+      targetRevision: main
+      ref: values
+
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: monitoring
+
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+      allowEmpty: false
+
+    syncOptions:
+      - CreateNamespace=true
+      - PrunePropagationPolicy=foreground
+      - PruneLast=true
+
+    retry:
+      limit: 5
+      backoff:
+        duration: 5s
+        factor: 2
+        maxDuration: 3m
+
+  revisionHistoryLimit: 10

node-exporter/helm-values/node-exporter.yaml

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+# Prometheus Node Exporter Helm Values
+# Chart: https://github.com/prometheus-community/helm-charts/tree/main/charts/prometheus-node-exporter
+
+fullnameOverride: node-exporter
+
+hostNetwork: true
+hostPID: true
+
+resources:
+  requests:
+    cpu: 10m
+    memory: 50Mi
+
+service:
+  type: ClusterIP
+  clusterIP: None
+
+# Prometheus ServiceMonitor 설정
+prometheus:
+  monitor:
+    enabled: true
+    additionalLabels:
+      release: prometheus
+    namespace: monitoring
+    attachMetadata:
+      node: true
+    relabelings:
+      - targetLabel: cluster
+        replacement: "mayne-cluster"
+
+tolerations:
+  - effect: NoSchedule
+    operator: Exists

node-exporter/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  # ArgoCD Application 리소스는 infrastructure/kustomization.yaml에서 관리
+  # - argocd/node-exporter.yaml