Advanced Networking & Ingress Controllers

intermediatekubernetesnetworkingdevops

Configure network policies and ingress routing for Kubernetes workloads

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Learning Objectives

Implement Kubernetes NetworkPolicies for pod communication

Deploy and configure an Ingress Controller (e.g., NGINX, Traefik)

Set up secure external access (TLS termination)

Manage service discovery and DNS resolution

Understand CNI plugin basics for network isolation

Requirements

  1. Create NetworkPolicy YAMLs to restrict traffic between front and backends
  2. Install an Ingress Controller and configure an Ingress resource
  3. Enable TLS termination at the Ingress level
  4. Verify DNS resolution of services within the cluster
  5. Document CNI plugin configuration and its impact

Stretch goals

  • Implement path-based and host-based routing
  • Use ExternalDNS to automate DNS records in a cloud provider
  • Test network policy isolation failures and fixes

Deliverables

  • NetworkPolicy and Ingress resource manifests
  • TLS certificates (self-signed or managed) in Secrets
  • README showing access methods and DNS setup

You’ll be able to secure and expose your Kubernetes services reliably.

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