Add Envoy Gateway install docs

Signed-off-by: kahirokunn <[email protected]>

Author: kahirokunn

README.md

@@ -101,6 +101,20 @@ echo ">> Deploy Gateway API resources"
 kubectl apply -f ./third_party/contour
 ```
 
+#### Envoy Gateway
+
+```bash
+echo ">> Bringing up Envoy Gateway"
+helm repo add envoyproxy https://charts.envoyproxy.io
+helm install eg oci://docker.io/envoyproxy/gateway-helm \
+  --version ${ENVOY_GATEWAY_VERSION} \
+  -n envoy-gateway-system --create-namespace \
+  -f ./third_party/envoy-gateway/helm/values-eg.yaml
+
+echo ">> Deploy Gateway API resources"
+kubectl apply -f ./third_party/envoy-gateway
+```
+
 ### (OPTIONAL) For testing purpose (Istio)
 
 Use Kind with MetalLB - https://kind.sigs.k8s.io/docs/user/loadbalancer

third_party/envoy-gateway/config-gateway.yaml

@@ -25,14 +25,14 @@ data:
   external-gateways: |
     - class: eg-external
       gateway: eg-external/eg-external
-      service: envoy-gateway-system/knative-external
+      service: eg-external/knative-external
       supported-features:
       - HTTPRouteRequestTimeout
 
   # local-gateways defines the Gateway to be used for cluster local traffic
   local-gateways: |
     - class: eg-internal
       gateway: eg-internal/eg-internal
-      service: envoy-gateway-system/knative-internal
+      service: eg-internal/knative-internal
       supported-features:
       - HTTPRouteRequestTimeout

third_party/envoy-gateway/helm/values-eg.yaml

@@ -0,0 +1,9 @@
+config:
+  envoyGateway:
+    provider:
+      type: Kubernetes
+      kubernetes:
+        deploy:
+          type: GatewayNamespace
+
+