库伯内特斯·安妞不使用traefisk

Question

我在Google平台上创建了一个kubernetes集群，之后，我在集群上安装了Helm/tiller，然后，我安装了traefik，就像官方文档说的那样。

现在，我正在尝试为服务创建一个宏，但是如果我将注释kubernetes.io/ingress.class: traefik放入进来，就不会创建宏的负载均衡器。但是如果没有注释，它就可以使用默认的In匀浆。(服务类型为nodeport)

编辑:我也在一个干净的集群中尝试了这个例子：https://supergiant.io/blog/using-traefik-as-ingress-controller-for-your-kubernetes-cluster/，但是当我选择kubernetes.io/ingress.class: traefik时，它同样不会被创建一个入口负载均衡器。

我的文件是：animals-svc.yaml:

---
apiVersion: v1
kind: Service
metadata:
  name: bear
spec:
  type: NodePort
  ports:
  - name: http
    targetPort: 80
    port: 80
  selector:
    app: animals
    task: bear
---
apiVersion: v1
kind: Service
metadata:
  name: moose
spec:
  type: NodePort
  ports:
  - name: http
    targetPort: 80
    port: 80
  selector:
    app: animals
    task: moose
---
apiVersion: v1
kind: Service
metadata:
  name: hare
  annotations:
    traefik.backend.circuitbreaker: "NetworkErrorRatio() > 0.5"
spec:
  type: NodePort
  ports:
  - name: http
    targetPort: 80
    port: 80
  selector:
    app: animals
    task: hare

animals-ingress.yaml:

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: animals
  annotations:
    kubernetes.io/ingress.class: traefik
    # kubernetes.io/ingress.global-static-ip-name: "my-reserved-global-ip"
    # traefik.ingress.kubernetes.io/frontend-entry-points: http
    # traefik.ingress.kubernetes.io/redirect-entry-point: http
    # traefik.ingress.kubernetes.io/redirect-permanent: "true"
spec:
  rules:
  - host: hare.minikube
    http:
      paths:
      - path: /
        backend:
          serviceName: hare
          servicePort: http
  - host: bear.minikube
    http:
      paths:
      - path: /
        backend:
          serviceName: bear
          servicePort: http
  - host: moose.minikube
    http:
      paths:
      - path: /
        backend:
          serviceName: moose
          servicePort: http

animals-deployment.yaml:

---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  name: bear
  labels:
    app: animals
    animal: bear
spec:
  replicas: 2
  selector:
    matchLabels:
      app: animals
      task: bear
  template:
    metadata:
      labels:
        app: animals
        task: bear
        version: v0.0.1
    spec:
      containers:
      - name: bear
        image: supergiantkir/animals:bear
        ports:
        - containerPort: 80
---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  name: moose
  labels:
    app: animals
    animal: moose
spec:
  replicas: 2
  selector:
    matchLabels:
      app: animals
      task: moose
  template:
    metadata:
      labels:
        app: animals
        task: moose
        version: v0.0.1
    spec:
      containers:
      - name: moose
        image: supergiantkir/animals:moose
        ports:
        - containerPort: 80
---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  name: hare
  labels:
    app: animals
    animal: hare
spec:
  replicas: 2
  selector:
    matchLabels:
      app: animals
      task: hare
  template:
    metadata:
      labels:
        app: animals
        task: hare
        version: v0.0.1
    spec:
      containers:
      - name: hare
        image: supergiantkir/animals:hare
        ports:
        - containerPort: 80

创建服务，但未创建入口负载平衡器：

​

​

但是，如果我删除行kubernetes.io/ingress.class: traefik，它将与Kubernetes的默认入口一起工作。

Answer 1

默认情况下，Traefik不会为您创建负载均衡器。

正如HTTP(s)负载平衡与Ingress文档所提到的：

当您创建一个宏对象时，GKE入口控制器将创建一个(S)负载平衡器，并根据Intru及其关联服务中的信息对其进行配置。

这一切都适用于GKE入口控制器( gce )-更多关于gce的信息，您可以在这里找到：https://github.com/kubernetes/ingress-gce。

如果您想使用Traefik作为入口，则必须使用type: LoadBalancer公开Traefik服务。

示例：

apiVersion: v1
kind: Service
metadata:
  name: traefik
spec:
  type: LoadBalancer
  selector:
    k8s-app: traefik-ingress-lb
  ports:
  - port: 80
    targetPort: 80

有很多解释图和实际工作示例的更多信息，您可以在使用Traefik侵入控制器将Kubernetes服务公开到internet上文章中找到。

希望能帮上忙。

Answer 2

您可以尝试添加更多注释，如下所示

traefik.ingress.kubernetes.io/frontend-entry-points: http,https
traefik.ingress.kubernetes.io/redirect-entry-point: https
traefik.ingress.kubernetes.io/redirect-permanent: "true"

像这样，

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: traefik-dashboard-ingress
  namespace: traefik
  annotations:
    kubernetes.io/ingress.class: traefik
    traefik.ingress.kubernetes.io/frontend-entry-points: http,https
    traefik.ingress.kubernetes.io/redirect-entry-point: https
    traefik.ingress.kubernetes.io/redirect-permanent: "true"
spec:
  rules:
  - host: traefik-ui.example.com
    http:
      paths:
      - path: /
        backend:
          serviceName: traefik-dashboard
          servicePort: 8080