container.training/slides/exercises/ingress-details.md

Exercise — Ingress

• We want to expose a web app through an ingress controller

• This will require:

  • the web app itself (dockercoins, NGINX, whatever we want)

  • an ingress controller

  • a domain name (use \*.nip.io or \*.localdev.me)

  • an ingress resource

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Goal

• We want to be able to access the web app using a URL like:

  http://webapp.localdev.me

  or

  http://webapp.A.B.C.D.nip.io

  (where A.B.C.D is the IP address of one of our nodes)

---

Hints

• For the ingress controller, we can use:

  • ingress-nginx

  • the Traefik Helm chart

  • the container.training Traefik DaemonSet

• If our cluster supports LoadBalancer Services: easy

  (nothing special to do)

• For local clusters, things can be more difficult; two options:

  • map localhost:80 to e.g. a NodePort service, and use \*.localdev.me

  • use hostNetwork, or ExternalIP, and use \*.nip.io