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我正在使用 DigitalOcean 的托管服务上的 K8s，并且只是尝试设置非常基础的内容以使其正常工作。

设置

  • DO 的 K8s 服务上的单节点，没有负载均衡器（除非另有推荐，否则希望使用 Traefik 来解决所有这些问题。）
  • 我已附加到集群中 K8s 节点的一个浮动 IP
  • 诊断这些问题时没有防火墙
  • DO K8s v1.15
  • Traefik v2.0

问题

据我所知，我可以确认事情正在设置中，因为我在以下配置声明中拥有它们，但是在访问 Traefik 用于测试功能甚至访问 Traefik 的示例“whoami”pod 的服务时遇到问题仪表板。

使用时kubectl proxy，我http://localhost:8001/api/v1/namespaces/default/services/http:traefik:8080/proxy/dashboard/#/会尝试访问 Traefik 仪表板，它会“响应”，但只给出一个空白页面。

在 Traefik pod 的日志中，只有以下内容：

time="2019-11-04T00:44:49Z" level=info msg="Configuration loaded from flags."
time="2019-11-04T00:44:58Z" level=error msg="Unable to obtain ACME certificate for domains \"<myDomain>\": unable to generate a certificate for the domains [<myDomain>]: acme: Error -> One or more domains had a problem:\n[<myDomain>] acme: error: 400 :: urn:ietf:params:acme:error:connection :: Connection refused, url: \n" rule="Host(`<myDomain>`) && PathPrefix(`/tls`)" routerName=default-ingressroutetls-2c388d38f54b2bf1bbe2 providerName=default.acme

稍后我将研究 Let's Encrypt 问题，因为现在我专注于在基本层面上实现此功能。

在尝试访问 WhoAmI 服务时http://<myDomain>/notls，我得到ERR_CONNECTION_REFUSED(Brave/Chrome)

配置

traefik.yaml

apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
  name: ingressroutes.traefik.containo.us

spec:
  group: traefik.containo.us
  version: v1alpha1
  names:
    kind: IngressRoute
    plural: ingressroutes
    singular: ingressroute
  scope: Namespaced

---
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
  name: ingressroutetcps.traefik.containo.us

spec:
  group: traefik.containo.us
  version: v1alpha1
  names:
    kind: IngressRouteTCP
    plural: ingressroutetcps
    singular: ingressroutetcp
  scope: Namespaced

---
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
  name: middlewares.traefik.containo.us

spec:
  group: traefik.containo.us
  version: v1alpha1
  names:
    kind: Middleware
    plural: middlewares
    singular: middleware
  scope: Namespaced

---
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
  name: tlsoptions.traefik.containo.us

spec:
  group: traefik.containo.us
  version: v1alpha1
  names:
    kind: TLSOption
    plural: tlsoptions
    singular: tlsoption
  scope: Namespaced

---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: traefik-ingress-controller

rules:
  - apiGroups:
      - ""
    resources:
      - services
      - endpoints
      - secrets
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - extensions
    resources:
      - ingresses
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - extensions
    resources:
      - ingresses/status
    verbs:
      - update
  - apiGroups:
      - traefik.containo.us
    resources:
      - middlewares
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - traefik.containo.us
    resources:
      - ingressroutes
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - traefik.containo.us
    resources:
      - ingressroutetcps
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - traefik.containo.us
    resources:
      - tlsoptions
    verbs:
      - get
      - list
      - watch

---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: traefik-ingress-controller

roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: traefik-ingress-controller
subjects:
  - kind: ServiceAccount
    name: traefik-ingress-controller
    namespace: default
---
apiVersion: v1
kind: ServiceAccount
metadata:
  namespace: default
  name: traefik-ingress-controller
---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  namespace: default
  name: traefik
  labels:
    app: traefik

spec:
  replicas: 1
  selector:
    matchLabels:
      app: traefik
  template:
    metadata:
      labels:
        app: traefik
    spec:
      serviceAccountName: traefik-ingress-controller
      containers:
        - name: traefik
          image: traefik:v2.0
          imagePullPolicy: Always
          args:
            - --api.insecure
            - --accesslog
            - --entrypoints.web.Address=:80
            - --entrypoints.websecure.Address=:443
            - --providers.kubernetescrd
            - --certificatesresolvers.default.acme.tlschallenge
            - --certificatesresolvers.default.acme.email=<myEmail>
            - --certificatesresolvers.default.acme.storage=acme.json
          ports:
            - name: web
              containerPort: 80
            - name: websecure
              containerPort: 443
            - name: admin
              containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: traefik

spec:
  ports:
    - protocol: TCP
      name: web
      port: 8000
    - protocol: TCP
      name: admin
      port: 8080
    - protocol: TCP
      name: websecure
      port: 4443
  selector:
    app: traefik

whoami.yaml

kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  namespace: default
  name: whoami
  labels:
    app: whoami

spec:
  replicas: 2
  selector:
    matchLabels:
      app: whoami
  template:
    metadata:
      labels:
        app: whoami
    spec:
      containers:
        - name: whoami
          image: containous/whoami
          ports:
            - name: web
              containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
  name: whoami

spec:
  ports:
    - protocol: TCP
      name: web
      port: 80
  selector:
    app: whoami
---
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: simpleingressroute
spec:
  entryPoints:
    - web
  routes:
  - match: Host(`<myDomain>`) && PathPrefix(`/notls`)
    kind: Rule
    services:
    - name: whoami
      port: 80

---
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: ingressroutetls
spec:
  entryPoints:
    - websecure
  routes:
  - match: Host(`<myDomain>`) && PathPrefix(`/tls`)
    kind: Rule
    services:
    - name: whoami
      port: 80
  tls:
    certResolver: default

任何帮助将不胜感激，在此先感谢您！！

4

1 回答 1

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我可以猜到几件事可以帮助你...

我将首先摆脱您正在使用的浮动 IP，并通过将服务创建为“LoadBalancer”类型来为 Traefik 服务分配一个外部 IP，如下所示：

apiVersion: v1
kind: Service
metadata:
  name: traefik
spec:
  ports:
    - protocol: TCP
      name: web
      port: 80
    - protocol: TCP
      name: websecure
      port: 443
  selector:
    app: traefik
  type: LoadBalancer
status:
  loadBalancer: {}

服务需要几秒钟才能获得外部 IP 地址。使用“kubectl get all”查看“EXTERNAL-IP”列下的状态。最后，这就是你想要做的，不是吗？将 Treafik 配置为负载均衡器？所以所有指向和通过服务本身的外部流量都是有意义的，不是吗？

您看到的错误应该可以通过将以下参数更改/添加到 Traefik 部署来解决：

- --certificatesresolvers.default.acme.tlschallenge=true
- --certificatesresolvers.default.acme.httpChallenge.entryPoint=web
- --api.dashboard=true (needed for the API route to work)

然后，创建到 Traefik API 的路由。指向 API 的路由看起来像这样（至少我是这样做的）：

apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: traefik-dashboard
spec:
  entryPoints:
    - web
  routes:
  - match: Host(`traefik.domain.com`)
    kind: Rule
    services:
    - name: api@internal
      kind: TraefikService

我会说先试试这些，然后把 TLS 证书留到以后。

于 2019-12-24T12:37:47.243 回答