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Kong Ingress Controller with Go

Steps to run the demonstration:

  1. Install minikube and start it

minikube start

  1. Install Kong Ingress Controller on minikube: https://docs.konghq.com/kubernetes-ingress-controller/latest/deployment/minikube/
  • Test wich echo-server
  • Create environment variable: export PROXY_IP=$(minikube service -n kong kong-proxy --url | head -1)

  1. Build the API: cd code go build -o ../api.bin cmd/main.go

  2. Create a Docker image: If using minikube and don't want to push image to a repository, then point your local Docker client to Minikube's implementation: eval $(minikube -p minikube docker-env) --- use the same shell. cd .. docker build -t api:v001 .

  3. Deploy the application, create a service and an ingress rule:

kubectl apply -f redis.yaml
kubectl apply -f serviceDeployment.yaml
kubectl apply -f ingress-rule.yaml

kubectl delete -f redis.yaml
kubectl delete -f serviceDeployment.yaml
kubectl delete -f ingress-rule.yaml
  1. Test access using the proxy IP:
curl -i $PROXY_IP/actuator/health
curl -i --header "Content-Type: application/json" --request POST --data '{"data" : "save this", "onetime" : false}' $PROXY_IP/api/note
curl -i  $PROXY_IP/api/note/b61bc30d-8b2c-41e7-8df7-36a262826f44

Setting up a rate limiter on your api

  1. Create a plugin:

kubectl apply -f rate-limiter.yaml

  1. Now test resource. Try more than 5 times a minute:
curl -i $PROXY_IP/actuator/health