设置入口（Kubernetes）

Question

我想设置一个 Ingress，它将流量路由到我的底层服务。不幸的是，当我部署我的 ingress-controller-deployment.yaml 时出现错误，我不知道为什么......带有 ingress-controller 的 pod 立即崩溃，并显示错误消息 "CrashLoopBackOff"。

根据我的理解，必须将 Ingress-Control 部署在 Pod 中，并且可以通过 ingress-svc 访问此 pod。 ingress-svc 似乎工作正常，但 Pod 崩溃了。在入口控制器工作后，我需要一个额外的文件来定义路由和所有内容。但是我看不出在没有工作和可部署的入口控制器的情况下继续下去的意义。

Pod description:

    Name:           ingress-controller-7749c785f-x94ll
    Namespace:      ingress
    Node:           gke-cluster-1-default-pool-8484e77d-r4wp/10.128.0.2
    Start Time:     Thu, 26 Apr 2018 14:25:04 +0200
    Labels:         k8s-app=nginx-ingress-lb
                    pod-template-hash=330573419
    Annotations:    kubernetes.io/created-by={"kind":"SerializedReference","apiVersion":"v1","reference":{"kind":"ReplicaSet","namespace":"ingress","name":"ingress-controller-7749c785f","uid":"d8ff0a6d-494c-11e8-a840
    -420...
    Status:         Running
    IP:             10.8.0.14
    Created By:     ReplicaSet/ingress-controller-7749c785f
    Controlled By:  ReplicaSet/ingress-controller-7749c785f
    Containers:
      nginx-ingress-controller:
        Container ID:  docker://5654c7dffc44510132cba303d66ee570280f2cec235e4d4fa6ef8ad543e0c91d
        Image:         quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.9.0
        Image ID:      docker-pullable://quay.io/kubernetes-ingress-controller/nginx-ingress-controller@sha256:39cc6ce23e5bcdf8aa78bc28bbcfe0999e449bf99fe2e8d60984b417facc5cd4
        Ports:         80/TCP, 443/TCP
        Args:
          /nginx-ingress-controller
          --admin-backend-svc=$(POD_NAMESPACE)/admin-backend
        State:          Waiting
          Reason:       CrashLoopBackOff
        Last State:     Terminated
          Reason:       Error
          Exit Code:    2
          Started:      Thu, 26 Apr 2018 14:26:57 +0200
          Finished:     Thu, 26 Apr 2018 14:26:57 +0200
        Ready:          False
        Restart Count:  4
        Liveness:       http-get http://:10254/healthz delay=10s timeout=5s period=10s #success=1 #failure=3
        Environment:
          POD_NAME:       ingress-controller-7749c785f-x94ll (v1:metadata.name)
          POD_NAMESPACE:  ingress (v1:metadata.namespace)
        Mounts:
          /var/run/secrets/kubernetes.io/serviceaccount from default-token-plbss (ro)
    Conditions:
      Type           Status
      Initialized    True
      Ready          False
      PodScheduled   True
    Volumes:
      default-token-plbss:
        Type:        Secret (a volume populated by a Secret)
        SecretName:  default-token-plbss
        Optional:    false
    QoS Class:       BestEffort
    Node-Selectors:  <none>
    Tolerations: node.alpha.kubernetes.io/notReady:NoExecute for 300s
node.alpha.kubernetes.io/unreachable:NoExecute for 300s

Ingress-controller-deployment.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: ingress-controller
spec:
  replicas: 1
  revisionHistoryLimit: 3
  template:
    metadata:
      labels:
        k8s-app: nginx-ingress-lb
    spec:
      containers:
        - args:
            - /nginx-ingress-controller
            - "--admin-backend-svc=$(POD_NAMESPACE)/admin-backend"
          env:
            - name: POD_NAME
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
          image: "quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.9.0"
          imagePullPolicy: Always
          livenessProbe:
            httpGet:
              path: /healthz
              port: 10254
              scheme: HTTP
            initialDelaySeconds: 10
            timeoutSeconds: 5
          name: nginx-ingress-controller
          ports:
            - containerPort: 80
              name: http
              protocol: TCP
            - containerPort: 443
              name: https
              protocol: TCP
---
apiVersion: v1
kind: Service
metadata:
  name: ingress-svc
spec:
  type: LoadBalancer
  ports:
  - name: http
    port: 80
    targetPort: http
  - name: https
    port: 443
    targetPort: https
  selector:
    k8s-app: nginx-ingress-lb

Answer 1

问题是参数。我的一个参数是

      args:
        - /nginx-ingress-controller
        - --default-backend-service=$(POD_NAMESPACE)/default-http-backend
        - --configmap=$(POD_NAMESPACE)/nginx-configuration
        - --tcp-services-configmap=$(POD_NAMESPACE)/tcp-services
        - --udp-services-configmap=$(POD_NAMESPACE)/udp-services
        - --publish-service=$(POD_NAMESPACE)/ingress-nginx
        - --annotations-prefix=nginx.ingress.kubernetes.io

我还为配置、tcp 和 udp 创建了配置映射。

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