一、确认istio-ingressgateway是否有对外的IPnode
kubectl get service istio-ingressgateway -n istio-system
若是 EXTERNAL-IP
有值(IP 地址或主机名),则说明您的环境具备可用于 Ingress 网关的外部负载均衡器。若是 EXTERNAL-IP
值是 <none>
(或一直是 <pending>
),则说明可能您的环境并无为 Ingress 网关提供外部负载均衡器的功能。nginx
能够经过如下方法添加外部IPwindows
kubectl edit service istio-ingressgateway -n istio-system
kubectl get service istio-ingressgateway -n istio-system
2、创建deployment、service、Gateway、VirtualServiceapi
1)新建nginx-istio-test.yaml浏览器
apiVersion: extensions/v1beta1 kind: Deployment metadata: name: nginx-app spec: replicas: 1 template: metadata: annotations: sidecar.istio.io/inject: "true" labels: app: nginx-app spec: containers: - name: nginx-app image: nginx imagePullPolicy: IfNotPresent ports: - containerPort: 80 --- apiVersion: v1 kind: Service metadata: name: nginx-svc labels: svcname: nginx-svc spec: ports: - port: 8088 protocol: TCP targetPort: 80 selector: app: nginx-app --- apiVersion: networking.istio.io/v1alpha3 kind: Gateway metadata: name: nginx-gateway spec: selector: istio: ingressgateway # use Istio default gateway implementation servers: - port: number: 80 name: nginx-http protocol: HTTP hosts: - istio-nginx.boshen.com --- apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: name: nginx-vs spec: hosts: - istio-nginx.boshen.com gateways: - nginx-gateway http: - match: - uri: prefix: / route: - destination: port: number: 8088 host: nginx-svc
在Gateway中app
VirtualService
映射的就是 Envoy 中的 Http Route Table
,你们能够注意到上面的 VirtualService 配置文件中有一个 gateways
字段,若是有这个字段,就表示这个 Http Route Table 是绑在 ingressgateway
的 Listener
中的;若是没有这个字段,就表示这个 Http Route Table 是绑在 Istio 所管理的全部微服务应用的 Pod 上的。负载均衡
2)部署yamlide
kubectl apply -f nginx-istio-test.yaml
3)在k8s的master节点和node节点的/etc/hosts里面加上如下内容微服务
4)在windows机器上的C:\Windows\System32\drivers\etc\hosts里面加上spa
5)在浏览器访问:http://istio-nginx.boshen.com/