k8s ingress对外暴露接口的几种方式

先看结果

DaemonSet+HostNetwork+nodeSelector

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Deployment+NodePort模式的Service

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Deployment+LoadBalancer模式的Service

修改deploy.yaml的service

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因没有外部地址，一直处于pending状态

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原理

为什么需要ingress？实际就是service的service

service不足

1.nodepoint过多，管理不便
2.cluster-ip 只能在同一个集群内访问
3.lb增加费用

调用过程controller(pod)运行着nginx-->ingress配置调用指向service

controller上运行的nginx

ingress 的service配置

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: ingress-nginx
  namespace: test
  annotations:
    # use the shared ingress-nginx
    kubernetes.io/ingress.class: "nginx"
    nginx.ingress.kubernetes.io/use-regex: "true"
spec:
  rules:
  - host: hugo.com
    http:
      paths:
      - path: /
        backend:
          serviceName: svc-nginx
          servicePort: 80