Ingress - HTTP Routing and TLS in Kubernetes

What You Will Learn

Intermediate

• What Ingress is and how it works
• Routing by domain and path
• TLS/SSL termination

Ingress is an API object that manages external access to Services via HTTP. It provides name-based virtual hosting, path-based routing, and TLS termination.

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: my-app-ingress
spec:
  rules:
  - host: api.example.com
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: api-service
            port:
              number: 80
  - host: web.example.com
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: web-service
            port:
              number: 80
  tls:
  - hosts:
    - api.example.com
    - web.example.com
    secretName: tls-secret

Ingress Controllers

Ingress needs a controller to actually route traffic. Popular options:

• NGINX Ingress Controller (most popular)
• Traefik (lightweight, modern)
• HAProxy Ingress
• Cloud provider controllers (GCE, AWS ALB)

# Enable Ingress on minikube
minikube addons enable ingress

# Apply your Ingress
kubectl apply -f ingress.yaml

# Check
kubectl get ingress

Practical Exercise