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Lab 4.3 - Network Policies

Objectives​

By the end of this lab, you will be able to:

  • Create Network Policies
  • Test network isolation
  • Understand the effect of policies

Exercise: Network Policy​

Step 1: Create Pods​

Create frontend and backend Pods with different labels.

Step 2: Create a Network Policy​

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: allow-frontend
spec:
  podSelector:
    matchLabels:
      app: backend
  policyTypes:
  - Ingress
  ingress:
  - from:
    - podSelector:
        matchLabels:
          app: frontend

Step 3: Test​

Test connectivity with and without the Network Policy.

Lab created: December 2024