typhoon/addons/prometheus/network-policy.yaml

# Allow Grafana access and in-cluster Prometheus scraping
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: prometheus
  namespace: monitoring
spec:
  podSelector:
    matchLabels:
      name: prometheus
  ingress:
    - ports:
        - protocol: TCP
          port: 9090
      from:
        - namespaceSelector:
            matchLabels:
              name: monitoring
          podSelector:
            matchLabels:
              name: grafana
        - namespaceSelector:
            matchLabels:
              name: monitoring
          podSelector:
            matchLabels:
              name: prometheus