apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: observability-agent-allow-alloy-dns
  namespace: observability-agent
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: alloy
  policyTypes:
    - Egress
  egress:
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: kube-system
          podSelector:
            matchLabels:
              k8s-app: kube-dns
      ports:
        - protocol: UDP
          port: 53
        - protocol: TCP
          port: 53
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: observability-agent-allow-alloy-api
  namespace: observability-agent
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: alloy
  policyTypes:
    - Egress
  egress:
    - to:
        - ipBlock:
            cidr: 10.43.0.1/32
      ports:
        - protocol: TCP
          port: 443
    - to:
        - ipBlock:
            cidr: 192.168.0.107/32
      ports:
        - protocol: TCP
          port: 6443
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: observability-agent-allow-alloy-backends
  namespace: observability-agent
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: alloy
  policyTypes:
    - Egress
  egress:
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: observability
          podSelector:
            matchLabels:
              app.kubernetes.io/name: loki
      ports:
        - protocol: TCP
          port: 3100
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: observability
          podSelector:
            matchLabels:
              app.kubernetes.io/name: tempo
      ports:
        - protocol: TCP
          port: 4317
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: observability-agent-allow-prometheus-to-alloy
  namespace: observability-agent
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: alloy
  policyTypes:
    - Ingress
  ingress:
    - from:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: observability
          podSelector:
            matchLabels:
              app.kubernetes.io/name: prometheus
      ports:
        - protocol: TCP
          port: 12345
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: observability-agent-allow-prometheus-to-node-exporter
  namespace: observability-agent
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: prometheus-node-exporter
  policyTypes:
    - Ingress
  ingress:
    - from:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: observability
          podSelector:
            matchLabels:
              app.kubernetes.io/name: prometheus
      ports:
        - protocol: TCP
          port: 9100
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: observability-agent-default-deny
  namespace: observability-agent
spec:
  podSelector: {}
  policyTypes:
    - Ingress
    - Egress