How to play with Nginx Gateway API

Introduction

https://blog.nashtechglobal.com/hands-on-kubernetes-gateway-api-with-nginx-gateway-fabric/

https://docs.nginx.com/nginx-gateway-fabric/get-started/

The following scenario which has been tested successfully use the port 8080 and the following configuration between the host, the container and pod running the nginx-fabric-gateway or ngf:

• HTTP traffic

  localhost port: 8080 <-> podman container port: 31682

  kubernetes Service nodePort: 31682 <-> ngf Gateway port & Service target port: 8080

  Note: See discussion about using a different port: nginx/nginx-gateway-fabric#1697

Instructions

• Create the kind cluster

set -x KIND_EXPERIMENTAL_PROVIDER podman
kind delete cluster
kind create cluster --config kind.cfg

• Deploy the Gateway API CRDs

kubectl kustomize "https://github.com/nginxinc/nginx-gateway-fabric/config/crd/gateway-api/standard?ref=v1.5.0" | kubectl apply -f -

• Install nginx fabric gateway using helm and the configuration defined using the values.yaml file

helm uninstall ngf -n nginx-gateway
helm install ngf oci://ghcr.io/nginxinc/charts/nginx-gateway-fabric --create-namespace -n nginx-gateway -f values.yaml

• Deploy the cafe and tea microservices using the following demo project: https://github.com/nginxinc/NGINX-Demos/tree/master/nginx-hello

kubectl delete -f microservices.yaml
kubectl apply -f microservices.yaml

• Create the Gateway resource able to consume the traffic on the port 80

kubectl delete -f gateway.yaml
kubectl apply -f gateway.yaml

• Create the HTTPRoutes resources to bind the hostname drink.localtest.me to the microservice's path: /coffee or /tea

kubectl delete -f httproutes.yaml
kubectl apply -f httproutes.yaml

• curl the service

curl http://drink.localtest.me:8080/coffee
Server address: 10.244.0.11:8080
Server name: coffee-6db967495b-gv7q4
Date: 13/Dec/2024:13:18:58 +0000
URI: /coffee
Request ID: 158cafccd8e407bb1dd5ebe3f9a0abf4

curl http://drink.localtest.me:8080/tea
Server address: 10.244.0.10:8080
Server name: tea-7b7d6c947d-q8gjr
Date: 13/Dec/2024:13:18:58 +0000
URI: /tea
Request ID: 562a46952c985b0d71d2ac7b1edc47b9