入口控制器 pods 未启动

Question

大家好，我刚开始试用 kubernetes，但无法让我的入口资源和控制器正常工作，无法将外部流量路由到我在集群中的服务。我的环境详细信息 Docker-windows 的桌面 kubernetes version 1.10.11（通过命令kubectl version获取） OS=windows10 64 位

我已经从以下 link 获取入口 https://kubernetes.github.io/ingress-nginx/deploy/

通过使用这 2 个命令

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/mandatory.yaml

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/cloud-generic.yaml

然后我创建了一个入口资源，例如

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  annotations:
     kubernetes.io/ingress.class: nginx
  name: sample-ingress1
spec:
  rules:
  - host: mysuperbot.com
    http:
      paths:
      - path: /sampleingress
        backend:
          serviceName: tomcatappservice
          servicePort: 8082

我的服务资源如下

---
apiVersion: v1
kind: Service
metadata:
  name: tomcatappservice
  labels:
    app: tomcat-app
spec:
  ports:
    - port: 8082
      protocol: TCP
      targetPort: 8080
  selector:
    app: tomcat-app
  type: NodePort



---
apiVersion: apps/v1beta1
kind: Deployment
metadata: 
  name: tomcat-app
  labels:
    app: tomcat-app
spec:
  replicas: 5
  selector:
    matchLabels:
      app: tomcat-app
  template:
    metadata:
      labels:
        app: tomcat-app
    spec:
      containers:
        - image: tomcatapp:v1.0.0 
          name: tomcat-app
          ports:
            - containerPort: 8080

我的主机文件有条目

mysuperbot.com  localhost

但毕竟当我尝试访问我的 mysuperbot 服务时。com/sampleingress 我收到错误 ERR_NAME_RESOLUTION_FAILED 这让我相信我的入口控制器设置不正确所以我用命令检查它

kubectl get pods -n ingress-nginx

输出如下

NAME                                        READY     STATUS    RESTARTS   AGE
nginx-ingress-controller-7d84dd6bdf-vnjx5   0/1       Pending   0          2h

这意味着我的入口 pods 没有开始 up.Need 帮助我如何在 docker-desktop for windows 附带的本地 kubernetes 集群上测试入口

更新

在运行命令之后

kubectl -n ingress-nginx describe pod nginx-ingress-controller-7d84dd6bdf-vnjx5

Name:           nginx-ingress-controller-7d84dd6bdf-vnjx5
Namespace:      ingress-nginx
Node:           <none>
Labels:         app.kubernetes.io/name=ingress-nginx
                app.kubernetes.io/part-of=ingress-nginx
                pod-template-hash=3840882689
Annotations:    prometheus.io/port=10254
                prometheus.io/scrape=true
Status:         Pending
IP:
Controlled By:  ReplicaSet/nginx-ingress-controller-7d84dd6bdf
Containers:
  nginx-ingress-controller:
    Image:       quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.26.1
    Ports:       80/TCP, 443/TCP
    Host Ports:  0/TCP, 0/TCP
    Args:
      /nginx-ingress-controller
      --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
    Liveness:   http-get http://:10254/healthz delay=10s timeout=10s period=10s #success=1 #failure=3
    Readiness:  http-get http://:10254/healthz delay=0s timeout=10s period=10s #success=1 #failure=3
    Environment:
      POD_NAME:       nginx-ingress-controller-7d84dd6bdf-vnjx5 (v1:metadata.name)
      POD_NAMESPACE:  ingress-nginx (v1:metadata.namespace)
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from nginx-ingress-serviceaccount-token-8md24 (ro)
Conditions:
  Type           Status
  PodScheduled   False
Volumes:
  nginx-ingress-serviceaccount-token-8md24:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  nginx-ingress-serviceaccount-token-8md24
    Optional:    false
QoS Class:       BestEffort
Node-Selectors:  kubernetes.io/os=linux
Tolerations:     node.kubernetes.io/not-ready:NoExecute for 300s
                 node.kubernetes.io/unreachable:NoExecute for 300s
Events:
  Type     Reason            Age                 From               Message
  ----     ------            ----                ----               -------
  Warning  FailedScheduling  14s (x583 over 3h)  default-scheduler  0/1 nodes are available: 1 node(s) didn't match node selector.

Answer 1

在你的入口控制器中你有节点选择器 kubernetes.io/os=linux 你必须编辑你的一些节点/你的入口配置来匹配这个标签。

kubectl get nodes - - show-labels
kubectl label nodes <node-name> <label-key>=<label-value>

https://kubernetes.io/docs/tasks/configure-pod-container/assign-pods-nodes/

入口控制器 pods 未启动

Ingress controller pods not starting up

kubernetes

kubernetes-ingress

nginx-ingress

docker-desktop