# 06-monitoring — exercise the provider × discovery × target matrix on four workloads.

integrations:
  monitoring:
    defaults:
      enabled: true                   # opt-in monitoring for every workload by default
      provider: prometheus            # ServiceMonitor / PodMonitor
      discovery: crd
      type: service
      port: metrics                   # name of the port in service.ports / pod ports
      path: /metrics
      interval: 30s
      scrapeTimeout: 10s
      exposeService:
        enabled: true                 # auto-add `metrics` port when not explicitly declared
        port: 9090
        targetPort: 9090

deployments:

  # 1. API — accepts all defaults: ServiceMonitor + service target.
  #    No metrics port declared in service.ports, so the chart auto-injects one.
  api:
    enabled: true
    replicaCount: 2
    image:
      repository: ghcr.io/example/api
      tag: v1.4.2
    service:
      enabled: true
      ports:
        http:
          port: 80
          targetPort: 8080
        # No metrics port here — chart auto-appends per integrations.monitoring.defaults.exposeService
    metrics:
      enabled: true                   # uses defaults: prometheus + crd + service
    resources:
      requests:
        cpu: 100m
        memory: 128Mi
      limits:
        memory: 256Mi

  # 2. Worker — no main Service, scrape via PodMonitor.
  #    Chart still emits a metrics-only Service (<release>-worker-metrics) for port-name resolution.
  worker:
    enabled: true
    replicaCount: 3
    image:
      repository: ghcr.io/example/worker
      tag: v0.9.0
    service:
      enabled: false                  # no main service
    metrics:
      enabled: true
      type: pod                       # PodMonitor instead of ServiceMonitor
    resources:
      requests:
        cpu: 100m
        memory: 256Mi
      limits:
        memory: 512Mi

  # 3. Legacy — clusters without Prometheus Operator CRDs. Annotations-mode discovery.
  #    Annotation-mode requires a NUMERIC port (kubernetes_sd convention).
  legacy:
    enabled: true
    replicaCount: 1
    image:
      repository: ghcr.io/example/legacy
      tag: v2.1.0
    service:
      enabled: true
      ports:
        http:
          port: 80
          targetPort: 8080
        metrics:                                    # explicit — disables auto-expose for this workload
          port: 9091
          targetPort: 9091
    metrics:
      enabled: true
      discovery: annotations          # injects prometheus.io/* on Service
      port: 9091                      # numeric — required by prometheus.io/port contract
    resources:
      requests:
        cpu: 50m
        memory: 128Mi
      limits:
        memory: 256Mi

  # 4. VictoriaMetrics-flavoured — same shape, different operator.
  #    Renders VMServiceScrape (operator.victoriametrics.com/v1beta1) instead of ServiceMonitor.
  vm-flavoured:
    enabled: true
    replicaCount: 1
    image:
      repository: ghcr.io/example/vm-app
      tag: v1.0.0
    service:
      enabled: true
      ports:
        http:
          port: 80
          targetPort: 8080
    metrics:
      enabled: true
      provider: victoriametrics       # per-workload override
    resources:
      requests:
        cpu: 50m
        memory: 128Mi
      limits:
        memory: 256Mi