INIT(repo): monitoring stack setup

loki/argocd/loki.yaml

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+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: loki
+  namespace: argocd
+spec:
+  project: default
+  sources:
+    - repoURL: https://grafana.github.io/helm-charts
+      chart: loki
+      targetRevision: 6.24.0
+      helm:
+        valueFiles:
+          - $values/loki/helm-values/loki.yaml
+    - repoURL: https://gitea0213.kro.kr/bluemayne/infrastructure.git
+      targetRevision: HEAD
+      ref: values
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: logging
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true

loki/helm-values/loki.yaml

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+# Loki Helm Values
+# Chart: https://grafana.github.io/helm-charts
+# Simple single binary deployment
+
+loki:
+  # Use filesystem storage (simple setup)
+  storage:
+    type: filesystem
+  
+  # Single binary mode for simplicity
+  commonConfig:
+    replication_factor: 1
+  
+  # Schema config
+  schemaConfig:
+    configs:
+      - from: "2024-01-01"
+        store: tsdb
+        object_store: filesystem
+        schema: v13
+        index:
+          prefix: index_
+          period: 24h
+
+  # Limits
+  limits_config:
+    retention_period: 168h  # 7 days
+    ingestion_rate_mb: 10
+    ingestion_burst_size_mb: 20
+    max_streams_per_user: 10000
+
+  # Auth disabled for simplicity
+  auth_enabled: false
+
+# Use single binary deployment (simpler)
+deploymentMode: SingleBinary
+
+singleBinary:
+  replicas: 1
+  persistence:
+    enabled: true
+    size: 10Gi
+    storageClass: local-path
+  resources:
+    requests:
+      cpu: 100m
+      memory: 256Mi
+
+# Disable components not needed in single binary mode
+backend:
+  replicas: 0
+read:
+  replicas: 0
+write:
+  replicas: 0
+
+# Gateway disabled (direct access)
+gateway:
+  enabled: false
+
+# Disable all caching (use simple mode)
+chunksCache:
+  enabled: false
+resultsCache:
+  enabled: false
+
+# Disable monitoring components
+monitoring:
+  selfMonitoring:
+    enabled: false
+    grafanaAgent:
+      installOperator: false
+  lokiCanary:
+    enabled: false
+
+# Test disabled
+test:
+  enabled: false

loki/kustomization.yaml

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