Summary
Keywords
Full Transcript
In this CKA 2025 hands-on lab, we solve Question 06 – CNI (Container Network Interface) Installation & NetworkPolicy Support. You’ll learn how to identify which CNI plugin supports NetworkPolicy enforcement before applying it — a critical step for the real CKA exam. We compare Flannel vs Calico, explore how to inspect manifests using curl, and confirm which one enables NetworkPolicy without deploying anything. Then we verify it using simple Kubernetes commands — exactly how you’d do it in an exam environment. 🧩 What You’ll Learn ✅ Difference between Flannel and Calico CNIs ✅ How to check a manifest before applying (exam-safe method) ✅ Using curl and grep to inspect YAMLs ✅ Identifying Calico CRDs (networkpolicies.crd.projectcalico.org) ✅ CKA-ready step-by-step reasoning 💡 Commands Used # Inspect manifest content curl -sL https://raw.githubusercontent.com/projectcalico/calico/v3.29.2/manifests/tigera-operator.yaml | grep -i "projectcalico.org" # Check for CRDs or policy references curl -sL https://raw.githubusercontent.com/projectcalico/calico/v3.29.2/manifests/tigera-operator.yaml | grep -i "CustomResourceDefinition" 🧠 Key Takeaway Always choose a CNI that supports NetworkPolicy — in most exam scenarios, Calico is your best choice. 🏷️ Tags cka, cka exam 2025, kubernetes, kubernetes cni, calico, flannel, networkpolicy, cka labs, kubernetes tutorial, kubernetes devops, kubernetes for beginners, dumbitguy, cka preparation, cka practice, kubernetes networking, cka2025
Continue this lesson in the app
Install CourseHive on Android or iOS to keep learning while you move.
