ingress 调用istio ingress 控制器

清理环境

[root@k8s-master01 httpbin]#   kubectl delete -f httpbin-gateway1.yaml -n istio
gateway.networking.istio.io "httpbin-gateway" deleted
virtualservice.networking.istio.io "httpbin" deleted

[root@k8s-master01 httpbin]#
[root@k8s-master01 httpbin]# kubectl delete svc -n istio httpbin
service "httpbin" deleted
[root@k8s-master01 httpbin]# kubectl delete deploy -n istio httpbin
deployment.apps "httpbin" deleted
使用istio gateway ，而不是使用ingress，主要是因为可以使用istio提供的所有功能，比如丰富的流量管理和安全的功能。

部署服务

[root@k8s-master01 httpbin]# kubectl apply -f httpbin.yaml -n istio
serviceaccount/httpbin created
service/httpbin created
deployment.apps/httpbin created

确定ingress的IP和端口号

[root@k8s-master01 httpbin]#  export INGRESS_HOST=$(kubectl -n istio-system get service istio-ingressgateway -o js
onpath='{.status.loadBalancer.ingress[0].ip}')[root@k8s-master01 httpbin]# export INGRESS_PORT=$(kubectl -n istio-system get service istio-ingressgateway -o jso
npath='{.spec.ports[?(@.name=="http2")].port}')[root@k8s-master01 httpbin]# export SECURE_INGRESS_PORT=$(kubectl -n istio-system get service istio-ingressgateway
 -o jsonpath='{.spec.ports[?(@.name=="https")].port}')[root@k8s-master01 httpbin]#
[root@k8s-master01 httpbin]#
[root@k8s-master01 httpbin]#
[root@k8s-master01 httpbin]# echo $INGRESS_HOST
192.168.30.240
[root@k8s-master01 httpbin]# echo $INGRESS_PORT
80
[root@k8s-master01 httpbin]# echo $SECURE_INGRESS_PORT
443

使用ingres资源配置ingress

kubernetes ingress 资源暴露http 和 https 的资源给外部集群的外部。让外部来访问。

1. 创建istio gateway 

[root@k8s-master01 httpbin]# vim istio-ingress.yaml

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ingress
  annotations:
    kubernetes.io/ingress.class: istio
spec:
  rules:
  - host: httpbin.example.com
    http:
      paths:
      - path: /status/.*
        backend:
          serviceName: httpbin
          servicePort: 8000