Ingress — exposing apps to the world

A LoadBalancer Service gets you one public IP per service — fine for one app, expensive and messy for ten. Ingress puts a single smart entry point in front of the whole cluster and routes traffic to the right Service based on the hostname or URL path requested.

# ingress.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: main
spec:
  rules:
    - host: myapp.example.com
      http:
        paths:
          - path: /api
            pathType: Prefix
            backend:
              service:
                name: api-svc
                port: { number: 80 }
          - path: /
            pathType: Prefix
            backend:
              service:
                name: web-svc
                port: { number: 80 }