tenant-config-pkg/network-policy.yaml

# Copyright 2020 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

---
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
  name: default-deny-all
  namespace: ns # kpt-set: ${tenant-name}
spec:
  podSelector: {}
  policyTypes:
    - Ingress
    - Egress
---
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata: # kpt-merge: allow-within-own-namespace
  name: allow-within-own-namespace
  namespace: ns # kpt-set: ${tenant-name}
spec:
  podSelector: {}
  policyTypes:
    - Ingress
    - Egress
  egress:
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: ns # kpt-set: ${tenant-name}
  ingress:
    - from:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: ns # kpt-set: ${tenant-name}
---
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
  name: allow-egress-metadata-server
  namespace: ns # kpt-set: ${tenant-name}
spec:
  podSelector: {}
  policyTypes:
    - Egress
  egress:
    - to:
        - ipBlock: # For GKE dataplane v2
            cidr: 169.254.169.254/32
      ports:
        - protocol: TCP
          port: 80
    - to:
        - ipBlock:
            cidr: 169.254.169.252/32
        - ipBlock:
            cidr: 127.0.0.1/32
      ports:
        - protocol: TCP
          port: 988
---
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
  name: allow-egress-istio-system
  namespace: ns # kpt-set: ${tenant-name}
spec:
  podSelector: {}
  policyTypes:
    - Egress
  egress:
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: istio-system
---
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
  name: allow-egress-istio-egress
  namespace: ns # kpt-set: ${tenant-name}
spec:
  podSelector: {}
  policyTypes:
    - Egress
  egress:
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: istio-egress
---
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
  name: allow-egress-kube-system-dns
  namespace: ns # kpt-set: ${tenant-name}
spec:
  podSelector: {}
  policyTypes:
    - Egress
  egress:
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: kube-system
      ports:
        - port: 53
          protocol: UDP
        - port: 53
          protocol: TCP
---
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
  name: allow-egress-to-private-google-apis
  namespace: ns # kpt-set: ${tenant-name}
spec:
  podSelector: {}
  policyTypes:
    - Egress
  egress:
    - to:
        - ipBlock:
            cidr: 199.36.153.8/30