CKA - networkpolicy

https://kubernetes.io/docs/concepts/services-networking/network-policies/

Network Policies

 

egress 여러개 network poliy추가하기 + pod selector 통해서 어떤 pod에 적용되는 네트워크 폴리시인지 확인할 수 있다.

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: internal-policy
  namespace: default
spec:
  podSelector:
    matchLabels:
      name: internal
  policyTypes:
  - Egress
  - Ingress
  ingress:
    - {}
  egress:
  - to:
    - podSelector:
        matchLabels:
          name: mysql
    ports:
    - protocol: TCP
      port: 3306

  - to:
    - podSelector:
        matchLabels:
          name: payroll
    ports:
    - protocol: TCP
      port: 8080

  - ports:
    - port: 53
      protocol: UDP
    - port: 53
      protocol: TCP