# Kube-Prometheus-Stack Helm Values
# Chart: https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack
# Includes: Prometheus Operator, Prometheus, Alertmanager, Grafana, and various exporters

# Global settings
fullnameOverride: ""

# CRD 관리
crds:
  enabled: false  # CRD annotation 크기 문제로 비활성화 (CRD는 이미 설치됨)

# Prometheus Operator
prometheusOperator:
  enabled: true
  # CRD 생성 비활성화
  createCustomResource: false

# Kubelet ServiceMonitor with cluster label
kubelet:
  enabled: true
  serviceMonitor:
    # cAdvisor metrics (container_memory_working_set_bytes 등)
    cAdvisorRelabelings:
      - targetLabel: cluster
        replacement: "mayne-cluster"
      - sourceLabels: [__metrics_path__]
        targetLabel: metrics_path
    # Resource metrics
    resourceRelabelings:
      - targetLabel: cluster
        replacement: "mayne-cluster"
    # Probes metrics
    probesRelabelings:
      - targetLabel: cluster
        replacement: "mayne-cluster"
  
# Prometheus
prometheus:
  enabled: true
  
  prometheusSpec:
    scrapeInterval: 60s       # 30s → 60s (메모리 절감)
    evaluationInterval: 60s   # 30s → 60s
    retention: 3d             # 7d → 3d (메모리 절감)

    storageSpec:
      volumeClaimTemplate:
        spec:
          storageClassName: longhorn
          accessModes: ["ReadWriteOnce"]
          resources:
            requests:
              storage: 5Gi

    resources:
      limits:
        memory: 1Gi           # limit 추가 (무제한 증가 방지)
      requests:
        cpu: 200m
        memory: 512Mi         # 256Mi → 512Mi (실제 사용량 반영)
    
    # ServiceMonitor 자동 발견 - 모든 ServiceMonitor 선택
    serviceMonitorSelectorNilUsesHelmValues: false
    serviceMonitorSelector: {}
    podMonitorSelectorNilUsesHelmValues: false
    podMonitorSelector: {}
    probeSelectorNilUsesHelmValues: false
    ruleSelector: {}
    
    # Alertmanager 설정
    alertingEndpoints:
      - name: alertmanager
        namespace: alertmanager
        port: http
        scheme: http

    # External labels added to all metrics
    externalLabels:
      cluster: "mayne-cluster"

    additionalScrapeConfigs:
      # ArgoCD metrics
      - job_name: 'argocd-metrics'
        static_configs:
          - targets:
            - 'argocd-metrics.argocd.svc.cluster.local:8082'
            labels:
              service: argocd-controller
          - targets:
            - 'argocd-server-metrics.argocd.svc.cluster.local:8083'
            labels:
              service: argocd-server
          - targets:
            - 'argocd-repo-server.argocd.svc.cluster.local:8084'
            labels:
              service: argocd-repo

      # Cert-Manager
      - job_name: 'cert-manager'
        static_configs:
          - targets:
            - 'cert-manager.cert-manager.svc.cluster.local:9402'

      # MinIO
      - job_name: 'minio-cluster'
        static_configs:
          - targets:
            - 'minio.minio.svc.cluster.local:9000'
        metrics_path: /minio/v2/metrics/cluster
        scheme: http

      - job_name: 'minio-node'
        static_configs:
          - targets:
            - 'minio.minio.svc.cluster.local:9000'
        metrics_path: /minio/v2/metrics/node
        scheme: http

      # Ingress NGINX
      - job_name: 'ingress-nginx'
        kubernetes_sd_configs:
          - role: pod
            namespaces:
              names:
                - ingress-nginx
        relabel_configs:
          - source_labels: [__meta_kubernetes_pod_label_app_kubernetes_io_name]
            action: keep
            regex: ingress-nginx
          - source_labels: [__meta_kubernetes_pod_label_app_kubernetes_io_component]
            action: keep
            regex: controller
          - source_labels: [__address__]
            action: replace
            regex: ([^:]+)(?::\d+)?
            replacement: $1:10254
            target_label: __address__
          - source_labels: [__meta_kubernetes_pod_name]
            action: replace
            target_label: pod
          - source_labels: [__meta_kubernetes_namespace]
            action: replace
            target_label: namespace

# Alertmanager (기존 alertmanager 사용)
alertmanager:
  enabled: false

# Grafana (기존 grafana 사용)
grafana:
  enabled: false

# Node Exporter (기존 node-exporter 사용)
nodeExporter:
  enabled: false
  
# Kube State Metrics (기존 kube-state-metrics 사용)
# 별도로 배포된 kube-state-metrics가 자체 ServiceMonitor 생성
kubeStateMetrics:
  enabled: false

# 기본 ServiceMonitors
defaultRules:
  create: true
  rules:
    alertmanager: true
    etcd: false
    configReloaders: true
    general: true
    k8s: true
    kubeApiserverAvailability: true
    kubeApiserverBurnrate: true
    kubeApiserverHistogram: true
    kubeApiserverSlos: true
    kubeControllerManager: false
    kubelet: true
    kubeProxy: false
    kubePrometheusGeneral: true
    kubePrometheusNodeRecording: true
    kubernetesApps: true
    kubernetesResources: true
    kubernetesStorage: true
    kubernetesSystem: true
    kubeSchedulerAlerting: false
    kubeSchedulerRecording: false
    kubeStateMetrics: true
    network: true
    node: true
    nodeExporterAlerting: true
    nodeExporterRecording: true
    prometheus: true
    prometheusOperator: true