gcloud-lab/apps/base/osint-dashboard/templates/security/monitoring-netpol.yaml

{{- if .Values.networkPolicies.enabled }}
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: monitoring-netpol
  namespace: {{ .Values.namespace }}
  labels:
    {{- include "osint-dashboard.labels" . | nindent 4 }}
    app.kubernetes.io/component: security
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: osint-dashboard
      app.kubernetes.io/component: monitoring
  policyTypes:
    - Ingress
    - Egress
  ingress:
    # Allow Grafana web access from monitoring namespace
    - from:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: monitoring
      ports:
        - protocol: TCP
          port: {{ .Values.monitoring.grafana.port }}
        - protocol: TCP
          port: {{ .Values.monitoring.prometheus.port }}
        - protocol: TCP
          port: {{ .Values.monitoring.alertmanager.port }}
  egress:
    # Allow DNS
    - to:
        - namespaceSelector: {}
          podSelector:
            matchLabels:
              k8s-app: kube-dns
      ports:
        - protocol: UDP
          port: 53
        - protocol: TCP
          port: 53
    # Allow scraping all OSINT pods
    - to:
        - podSelector:
            matchLabels:
              app.kubernetes.io/name: osint-dashboard
      ports:
        - protocol: TCP
          port: 9090
        - protocol: TCP
          port: 9093
        - protocol: TCP
          port: 3000
        - protocol: TCP
          port: 9187  # postgres-exporter
        - protocol: TCP
          port: 9121  # redis-exporter
        - protocol: TCP
          port: 8222  # nats-monitor
        - protocol: TCP
          port: 9000  # minio
{{- end }}