# =============================================================================
# PROMETHEUS CONFIGURATION
# =============================================================================
# Scrape config for k8s node metrics and postgres-exporter.
# Add additional scrape targets as services are deployed.
apiVersion: v1
kind: ConfigMap
metadata:
  name: prometheus-config
  labels:
    app: vibecarbon-prometheus
    component: observability
data:
  prometheus.yml: |
    global:
      scrape_interval: 30s
      evaluation_interval: 30s

    scrape_configs:
      # Scrape Prometheus's own metrics
      - job_name: "prometheus"
        static_configs:
          - targets: ["localhost:9090"]

      # Scrape Kubernetes node metrics via kubelet
      # k3s exposes metrics on the default kubelet port
      - job_name: "kubernetes-nodes"
        scheme: https
        tls_config:
          ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
          insecure_skip_verify: true
        bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
        kubernetes_sd_configs:
          - role: node
        relabel_configs:
          - action: labelmap
            regex: __meta_kubernetes_node_label_(.+)

      # Scrape cAdvisor metrics from kubelet (container resource usage)
      - job_name: "kubernetes-cadvisor"
        scheme: https
        tls_config:
          ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
          insecure_skip_verify: true
        bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
        kubernetes_sd_configs:
          - role: node
        metrics_path: /metrics/cadvisor
        relabel_configs:
          - action: labelmap
            regex: __meta_kubernetes_node_label_(.+)

      # Scrape pods with prometheus.io/scrape annotation
      - job_name: "kubernetes-pods"
        kubernetes_sd_configs:
          - role: pod
            namespaces:
              names:
                - vibecarbon
        relabel_configs:
          - source_labels: [__meta_kubernetes_pod_annotation_prometheus_io_scrape]
            action: keep
            regex: "true"
          - source_labels: [__meta_kubernetes_pod_annotation_prometheus_io_path]
            action: replace
            target_label: __metrics_path__
            regex: (.+)
          - source_labels: [__address__, __meta_kubernetes_pod_annotation_prometheus_io_port]
            action: replace
            regex: ([^:]+)(?::\d+)?;(\d+)
            replacement: $1:$2
            target_label: __address__
          - action: labelmap
            regex: __meta_kubernetes_pod_label_(.+)
          - source_labels: [__meta_kubernetes_namespace]
            action: replace
            target_label: kubernetes_namespace
          - source_labels: [__meta_kubernetes_pod_name]
            action: replace
            target_label: kubernetes_pod_name