Knative net-gateway-api

This component is ALPHA

net-gateway-api repository contains a KIngress implementation and testing for Knative integration with the Kubernetes Gateway API.

This work is still in early development, which means it's not ready for production, but also that your feedback can have a big impact. You can find the tested Ingress and unavailable features here.

This work is still in early development, which means it's not ready for production, but also that your feedback can have a big impact. You can also find the tested Ingress and unavailable features here.

Tests

Note: conformance and e2e tests are a wip at the moment. Please see:

• EPIC - Contour tests · Issue #36 · knative-sandbox/net-gateway-api
• EPIC - Istio tests · Issue #23 · knative-sandbox/net-gateway-api

Versions to be installed are listed in hack/test-env.sh.

Requirements

1. A Kind cluster
2. Knative serving installed
3. ko (for installing the net-gateway-api)
4. kubectl
5. export KO_DOCKER_REPO=kind.local

Getting started

Install Knative serving

kubectl apply -f https://github.com/knative/serving/releases/latest/download/serving-crds.yaml
kubectl apply -f https://github.com/knative/serving/releases/latest/download/serving-core.yaml

Configure Knative

Ingress

Configuration so Knative serving uses the proper "ingress.class":

kubectl patch configmap/config-network \
  -n knative-serving \
  --type merge \
  -p '{"data":{"ingress.class":"gateway-api.ingress.networking.knative.dev"}}'

Load balancer

Configuration so Knative serving uses nip.io for DNS. For kind the loadbalancer IP is 127.0.0.1:

kubectl patch configmap/config-domain \
  -n knative-serving \
  --type merge \
  -p '{"data":{"127.0.0.1.nip.io":""}}'

(OPTIONAL) Deploy a sample hello world app:

cat <<-EOF | kubectl apply -f -
apiVersion: serving.knative.dev/v1
kind: Service
metadata:
  name: helloworld-go
spec:
  template:
    spec:
      containers:
      - image: gcr.io/knative-samples/helloworld-go
        env:
        - name: TARGET
          value: Go Sample v1
EOF

Install net-gateway-api

ko apply -f config/

Load tested environment versions

source ./hack/test-env.sh

Install a supported implementation

Istio

# gateway-api CRD must be installed before Istio.
echo ">> Installing Gateway API CRDs"
kubectl apply -f config/100-gateway-api.yaml

echo ">> Bringing up Istio"
curl -sL https://istio.io/downloadIstioctl | sh -
"$HOME"/.istioctl/bin/istioctl install -y --set values.gateways.istio-ingressgateway.type=NodePort --set values.global.proxy.clusterDomain="${CLUSTER_SUFFIX}"

echo ">> Deploy Gateway API resources"
kubectl apply -f ./third_party/istio/gateway/

Contour

echo ">> Bringing up Contour"
kubectl apply -f "https://raw.githubusercontent.com/projectcontour/contour-operator/${CONTOUR_VERSION}/examples/operator/operator.yaml"

# wait for operator deployment to be Available
kubectl wait deploy --for=condition=Available --timeout=120s -n "contour-operator" -l '!job-name'

echo ">> Deploy Gateway API resources"
ko resolve -f ./third_party/contour/gateway/ | \
  sed 's/LoadBalancerService/NodePortService/g' | \
  kubectl apply -f -

(OPTIONAL) For testing purpose (Istio)

You can use port-forwarding to make requests to ingress from your machine:

kubectl port-forward  -n istio-system $(kubectl get pod -n istio-system -l "app=istio-ingressgateway" --output=jsonpath="{.items[0].metadata.name}") 8080:8080

curl -v -H "Host: helloworld-go.default.127.0.0.1.nip.io" http://localhost:8080

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To learn more about Knative, please visit our Knative docs repository.

If you are interested in contributing, see CONTRIBUTING.md and DEVELOPMENT.md.