我正在尝试在使用Kops构建的AWS集群上使用kubernetes的入口。
我正在遵循此文档：https://github.com/kubernetes/kops/tree/master/addons/kube-ingress-aws-controller。
如您所见，我正在将 kube-ingress-aws-controller 与 skipper入口一起使用。

对于 kube-ingress-aws-controller ，我具有以下脚本：

apiVersion: apps/v1
kind: Deployment
metadata:
  name: kube-ingress-aws-controller
  namespace: kube-system
  labels:
    application: kube-ingress-aws-controller
    component: ingress
spec:
  replicas: 1
  selector:
    matchLabels:
      application: kube-ingress-aws-controller
      component: ingress
  template:
    metadata:
      labels:
        application: kube-ingress-aws-controller
        component: ingress
    spec:
      serviceaccountName: kube-ingress-aws
      containers:
      - name: controller
        image: registry.opensource.zalan.do/teapot/kube-ingress-aws-controller:latest
        env:
        - name: AWS_REGION
          value: eu-central-1

对于船长进入，脚本是这样的：

apiVersion: extensions/v1beta1
kind: daemonset
metadata:
  name: skipper-ingress
  namespace: kube-system
  labels:
    component: ingress
spec:
  selector:
    matchLabels:
      component: ingress
  updateStrategy:
    type: RollingUpdate
  template:
    metadata:
      name: skipper-ingress
      labels:
        component: ingress
        application: skipper
    spec:
      hostNetwork: true
      serviceaccountName: skipper-ingress
      containers:
      - name: skipper-ingress
        image: registry.opensource.zalan.do/pathfinder/skipper:latest
        ports:
        - name: ingress-port
          containerPort: 9999
          hostPort: 9999
        - name: metrics-port
          containerPort: 9911
        args:
          - "skipper"
          - "-kubernetes"
          - "-kubernetes-in-cluster"
          - "-address=:9999"
          - "-proxy-preserve-host"
          - "-serve-host-metrics"
          - "-enable-ratelimits"
          - "-experimental-upgrade"
          - "-metrics-exp-decay-sample"
          - "-lb-healthcheck-interval=3s"
          - "-metrics-flavour=codahale,prometheus"
          - "-enable-connection-metrics"
        resources:
          requests:
            cpu: 200m
            memory: 200Mi
        readinessProbe:
          httpGet:
            path: /kube-system/healthz
            port: 9999
          initialDelaySeconds: 5
          timeoutSeconds: 5

此后，我应用了更多脚本来对概念进行功能验证，一切正常。

问题

两个入口都有什么意义？ 船长在做什么？

单调的kube-inress-aws-controller不够吗？