Proxy the httpbin service

This document explains how apisix-ingress-controller guides Apache APISIX routes traffic to httpbin service correctly.

Prerequisites#

Prepare an available Kubernetes cluster in your workstation, we recommend you to use Minikube.
Install Apache APISIX in Kubernetes by Helm Chart.
Install apisix-ingress-controller.

Deploy httpbin service#

We use kennethreitz/httpbin as the service image, See its overview page for details.

Now, try to deploy it to your Kubernetes cluster:

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

Resource Delivery#

In order to let Apache APISIX proxies requests to httpbin, we need to create an ApisixRoute resource, if you're not familiar with it, see the reference for the details.

# httpbin-route.yaml
apiVersion: apisix.apache.org/v1
kind: ApisixRoute
metadata:
  name: httpserver-route
spec:
  rules:
  - host: local.httpbin.org
    http:
      paths:
      - backend:
          serviceName: httpbin
          servicePort: 80
        path: /*

The YAML snippet shows a simple ApisixRoute configuration, which tells Apache APISIX to route all requests with Host local.httpbin.org to the httpbin service. Now try to create it.

kubectl apply -f httpbin-route.yaml

Test#

Run curl call in one of Apache APISIX Pods to check whether the resource was delivered to it. Note you should replace the value of --apisix-admin-key to the real admin_key value in your Apache APISIX cluster.

kubectl exec -it -n ${namespace of Apache APISIX} ${Pod name of Apache APISIX} -- curl http://127.0.0.1:9180/apisix/admin/routes -H 'X-API-Key: edd1c9f034335f136f87ad84b625c8f1'

And request to Apache APISIX to verify the route.

kubectl exec -it -n ${namespace of Apache APISIX} ${Pod name of Apache APISIX} -- curl http://127.0.0.1:9080/headers -H 'Host: local.httpbin.org'

In case of success, you'll see a JSON string which contains all requests headers carried by curl like:

{
  "headers": {
    "Accept": "*/*",
    "Host": "httpbin.org",
    "User-Agent": "curl/7.64.1",
    "X-Amzn-Trace-Id": "Root=1-5ffc3273-2928e0844e19c9810d1bbd8a"
  }
}