[K8S] Network Policy 정의하기

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: deny
spec:
  podSelector: {}
  policyTypes:
  - Egress
  - Ingress

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: deny
spec:
  podSelector: {}
  policyTypes:
  - Egress
  - Ingress
  egress:
  - to:
    ports:
      - port: 53
        protocol: TCP
      - port: 53
        protocol: UDP

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: allow-9000-from-namespace
spec:
  podSelector: {}
  policyTypes:
  - Ingress
  ingress:
  - from:
    - namespaceSelector:
        matchLabels:
          color: pink
    ports:
      - port: 9000
        protocol: TCP