Developing Network Policies Solution

• How to check the amount of network policies available:

  kubectl get networkpolicy
  

  or

  kubectl get netpol
  

• Describe a network policy with the following:

  kubectl describe networkpolicy payroll-policy
  

• Create a network policy to allow traffic from the Internal application only to the payroll-service and db-service: ``` 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 ```