Challenge - Ingress

Write an Ingress with path-based routing.

Challenge: a multi-service Ingress

In this challenge you'll publish two domain names and three services with a single Ingress; the main domain will have HTTPS:

magaza.example.com/        -> web:80
magaza.example.com/api     -> api:8000
panel.example.com/         -> panel:80

Testing doesn't wait for real DNS: the request is sent to the controller address and the domain name is given with the Host header.

Exercise Ingress rules

Write an Ingress's rules section (starting with rules:): for magaza.example.com, /api (Prefix) → api:8000 and / (Prefix) → web:80; for panel.example.com, / (Prefix) → panel:80.

Show example solution

rules:
  - host: magaza.example.com
    http:
      paths:
        - path: /api
          pathType: Prefix
          backend:
            service:
              name: api
              port:
                number: 8000
        - path: /
          pathType: Prefix
          backend:
            service:
              name: web
              port:
                number: 80
  - host: panel.example.com
    http:
      paths:
        - path: /
          pathType: Prefix
          backend:
            service:
              name: panel
              port:
                number: 80

Exercise TLS and testing

Write three commands: create the magaza-tls TLS Secret from magaza.crt and magaza.key; test the API path with curl -s -H "Host: magaza.example.com" http://$(minikube ip)/api/saglik; test the panel with curl -s -H "Host: panel.example.com" http://$(minikube ip)/.

Show example solution

kubectl create secret tls magaza-tls --cert=magaza.crt --key=magaza.key
curl -s -H "Host: magaza.example.com" http://$(minikube ip)/api/saglik
curl -s -H "Host: panel.example.com" http://$(minikube ip)/

Test yourself

Where does a request to panel.example.com/api go with these rules?
- api:8000
- web:80
- 404
- panel:80 (only its own host rules apply)
Show answer

panel:80 (only its own host rules apply) — The host matches first, then that host's paths.

Give the domain name with a header.

curl -H "____: panel.example.com" http://$(minikube ip)/

Show answer

curl -H "Host: panel.example.com" http://$(minikube ip)/

Match.

rules[].host

Domain rule
paths[].path

Path rule
tls[].hosts

HTTPS domains
Host header

Testing without DNS

Next lesson: Challenge - StatefulSet

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