切换到其他 Kubernetes Gateway 实现
您可以以更简单、厂商中立的方式切换到任何支持 Kubernetes Gateway API 的 网关实现,如 Contour、Istio、Apache APISIX、Envoy Gateway(未来)等。
例如,您可以选择使用 Istio 作为底层的 Kubernetes Gateway
,如下所示:
- 安装 OpenFunction,但不包括
Contour
:
helm install openfunction --set global.Contour.enabled=false openfunction/openfunction -n openfunction
- 安装
Istio
,然后启用其 Knative 集成:
kubectl apply -l knative.dev/crd-install=true -f https://github.com/knative/net-istio/releases/download/knative-v1.3.0/istio.yaml
kubectl apply -f https://github.com/knative/net-istio/releases/download/knative-v1.3.0/istio.yaml
kubectl apply -f https://github.com/knative/net-istio/releases/download/knative-v1.3.0/net-istio.yaml
- 创建一个名为
istio
的GatewayClass
:
kubectl apply -f - <<EOF
apiVersion: gateway.networking.k8s.io/v1alpha2
kind: GatewayClass
metadata:
name: istio
spec:
controllerName: istio.io/gateway-controller
description: The default Istio GatewayClass
EOF
- 创建一个
OpenFunction Gateway
:
kubectl apply -f - <<EOF
apiVersion: networking.openfunction.io/v1alpha1
kind: Gateway
metadata:
name: custom-gateway
namespace: openfunction
spec:
domain: ofn.io
clusterDomain: cluster.local
hostTemplate: "{{.Name}}.{{.Namespace}}.{{.Domain}}"
pathTemplate: "{{.Namespace}}/{{.Name}}"
gatewayDef:
namespace: openfunction
gatewayClassName: istio
gatewaySpec:
listeners:
- name: ofn-http-external
protocol: HTTP
port: 80
allowedRoutes:
namespaces:
from: All
EOF
- 在
Function
的gatewayRef
字段中引用自定义的OpenFunction Gateway
(Istio):
kubectl apply -f - <<EOF
apiVersion: core.openfunction.io/v1beta2
kind: Function
metadata:
name: function-sample
spec:
version: "v1.0.0"
image: "openfunctiondev/v1beta1-http:latest"
serving:
template:
containers:
- name: function
imagePullPolicy: Always
triggers:
http:
route:
gatewayRef:
name: custom-gateway
namespace: openfunction
EOF
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