apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: default-deny-ingress-egress
  namespace: cosmic-clash
spec:
  podSelector: {}
  policyTypes: [Ingress, Egress]
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: control-plane-allowed-flows
  namespace: cosmic-clash
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: control-plane
  policyTypes: [Ingress, Egress]
  ingress:
    - from:
        - namespaceSelector: {}
          podSelector:
            matchLabels:
              app.kubernetes.io/name: edge-gateway
      ports:
        - protocol: TCP
          port: 8080
  egress:
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: data
          podSelector:
            matchLabels:
              app.kubernetes.io/name: postgres
      ports:
        - protocol: TCP
          port: 5432
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: data
          podSelector:
            matchLabels:
              app.kubernetes.io/name: redis
      ports:
        - protocol: TCP
          port: 6379
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: agones-system
      ports:
        - protocol: TCP
          port: 443
    - ports:
        - protocol: UDP
          port: 53
        - protocol: TCP
          port: 53
      to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: kube-system
          podSelector:
            matchLabels:
              k8s-app: kube-dns
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: game-server-allowed-egress
  namespace: cosmic-clash
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/name: game-server
  policyTypes: [Egress]
  egress:
    - to:
        - podSelector:
            matchLabels:
              app.kubernetes.io/name: control-plane
      ports:
        - protocol: TCP
          port: 8080
    - ports:
        - protocol: UDP
          port: 53
        - protocol: TCP
          port: 53
      to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: kube-system
          podSelector:
            matchLabels:
              k8s-app: kube-dns