Gateway API Demo

Prerequisites

• Install cert-manager helm chart (optional)

• Install external dns helm chart (optional)

• Kubernetes or Cloud provider Load Balancer Service

• Clone this repo

git clone https://github.com/syseleven/gateway-api-demo.git

• Install Gateway API CRDs

kubectl apply -f https://github.com/kubernetes-sigs/gateway-api/releases/download/v1.1.0/experimental-install.yaml

• Install the cilium helm chart. This is the minimum configuration. You can also use the cilium values file in this repo (optional)

helm upgrade cilium cilium/cilium \
    --namespace kube-system \
    --reuse-values \
    --set kubeProxyReplacement=true \
    --set gatewayAPI.enabled=true

• Install the Cert-Manager helm chart (optional). Make sure to create an issuer or a clusterissuer after the installation. Cert-Manager Docs

helm upgrade --install cert-manager --namespace cert-manager --create-namespace -f cert-manager-helm/cert-manager-values.yaml jetstack/cert-manager

• Install the External DNS helm chart (optional). Make sure to configure your DNS API key in the external-dns-values.yaml first. External-DNS Docs

helm upgrade --install external-dns --namespace external-dns  --create-namespace -f external-dns/external-dns-values.yaml bitnami/external-dns

• Install the Gateway API controller. Remove the HTTPS section if you are only using HTTP routes. Change the domain, certificate and clusterissuer if you are using HTTPS. You will need a Load Balancer Service for this to succeed

kubectl create -f gateway-api/gateway.yaml

• Wait for the Load Balancer IP to be ready
• Create the demo web app v1

kubectl create -f webapp/webapp-v1.deploy.yaml

• Create an HTTP route. Change the domain name first.

kubectl create -f gateway-api/http-route.yaml

• Test if the route is working. If you are using external dns wait a few minutes for the domain name to get added to the dns server

curl http://example.com

• Update the HTTP route with a redirect and a HTTPS route

kubectl apply -f gateway-api/https-redirect.yaml

• Add the second demo web app v2

kubectl create -f webapp/webapp-v2.deploy.yaml

• Add a second service and traffic spliting to the existing routes

kubectl apply -f gateway-api/https-redirect-split.yaml

• Test both web apps and ensure that the traffic spliting is working (green / red app)

open http://example.com