httpserver 服务以 Istio Ingress Gateway 的形式发布

一，安装istio

二，sidecar 自动注入, 重启httpserver的pod

kubectl label namespace default istio-injection=enabled

然后删除之前的httpserver pod , 重新拉起这个pod

 看下这个pod拉起过程

 三，确定 ingress IP 和端口，明确自身 Kubernetes 集群环境支持外部负载均衡

root@iZbp12lq02mc4cz0rt0ce9Z:~# kubectl get svc istio-ingressgateway -n istio-system
NAME                   TYPE           CLUSTER-IP       EXTERNAL-IP   PORT(S)                                                                      AGE
istio-ingressgateway   LoadBalancer   10.105.131.213   <pending>     15021:31845/TCP,80:32444/TCP,443:31613/TCP,31400:30973/TCP,15443:31868/TCP   3h50m

　　

四，创建 Istio Gateway:

apiVersion: networking.istio.io/v1bet
a1
kind: Gateway
metadata:
  name: gateway
spec:
  selector:
    istio: ingressgateway
  servers:
    - port:
        number: 80
        name: http
        protocol: HTTP
      hosts:
        - '*'

五，部署virtual server, 为通过 Gateway 的入口流量配置路由

apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
  name: httpserver
  namespace: default
spec:
  gateways:
  - httpsserver
  hosts:
  - httpserver-helm.51.cafe
  http:
  - route:
    - destination:
        host: httpserver.default.svc.cluster.local
        port:
          number: 80

六：使用 curl 访问 httpserver服务

curl httpserver-helm.51.cafe