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Configuring Ingress with APISIX CRDs

This tutorial walks through configuring APISIX Ingress with APISIX Custom Resource Definitions (CRDs).

Also see:

Prerequisites#

Before you move on, make sure you:

  1. Have access to a Kubernetes cluster. This tutorial uses minikube.
  2. Install APISIX Ingress. See the Installation section.

Deploy httpbin#

We will deploy a sample service, kennethreitz/httpbin, for this tutorial.

You can deploy it to your Kubernetes cluster by running:

kubectl run httpbin --image kennethreitz/httpbin --port 80
kubectl expose pod httpbin --port 80

Configuring Ingress#

We can configure the Ingress using an ApisixRoute resource. The example below configures APISIX to route requests to the httpbin service:

httpbin-ingress.yaml
apiVersion: apisix.apache.org/v2
kind: ApisixRoute
metadata:
  name: httpserver-route
spec:
  http:
  - name: rule1
    match:
      hosts:
      - local.httpbin.org
      paths:
      - /*
    backends:
       - serviceName: httpbin
         servicePort: 80

This configuration will route all requests with host local.httpbin.org to the httpbin service.

You can apply it by running:

kubectl apply -f httpbin-ingress.yaml

Test the created Routes#

If you followed along and used minikube and NodePort service to expose APISIX, you can access it through the Node IP of the service apisix-gateway. If the Node IP is not reachable directly (if you are on Darwin, Windows, or WSL), you can create a tunnel to access the service on your machine:

minikube service apisix-gateway --url -n ingress-apisix

Now, you can send a GET request to the created Route and it will be Routed to the httpbin service:

curl --location --request GET "localhost:57687/get?foo1=bar1&foo2=bar2" -H "Host: local.httpbin.org"

You will receive a response similar to:

output
{
  "args": {
    "foo1": "bar1", 
    "foo2": "bar2"
  }, 
  "headers": {
    "Accept": "*/*", 
    "Host": "local.httpbin.org", 
    "User-Agent": "curl/7.84.0", 
    "X-Forwarded-Host": "local.httpbin.org"
  }, 
  "origin": "172.17.0.1", 
  "url": "http://local.httpbin.org/get?foo1=bar1&foo2=bar2"
}