Nginx 我能'；无法获得入口服务工作的基本示例

我正在为一个面向nginx吊舱的入口服务的非常基本的示例而挣扎。每当我尝试访问我的示例站点时，我都会得到以下简单的文本输出，而不是默认的nginx页面：

404 page not found

以下是我正在使用的部署：

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    app: nginx
spec:
  replicas: 4
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: nginx-service
spec:
  selector:
    app: nginx
  ports:
    - protocol: TCP
      port: 80
      targetPort: 8080
---
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: nginx-ingress
  namespace: default
spec:
  rules:
  - host: argo.corbe.net
    http:
      paths:
      - backend:
          serviceName: ningx
          servicePort: 80

k3s kubectl获得吊舱-o宽：

NAME                              READY   STATUS    RESTARTS   AGE   IP           NODE    NOMINATED NODE   READINESS GATES
nginx-deployment-d6dcb985-942cz   1/1     Running   0          8h    10.42.0.17   k3s-1   <none>           <none>
nginx-deployment-d6dcb985-d7v69   1/1     Running   0          8h    10.42.0.18   k3s-1   <none>           <none>
nginx-deployment-d6dcb985-dqbn9   1/1     Running   0          8h    10.42.1.26   k3s-2   <none>           <none>
nginx-deployment-d6dcb985-vpf79   1/1     Running   0          8h    10.42.1.25   k3s-2   <none>           <none>

NAME READY STATUS重新启动老化IP节点指定节点就绪门
nginx-deployment-d6dcb985-942cz 1/1运行0 8h 10.42.0.17 k3s-1
nginx-deployment-d6dcb985-d7v69 1/1运行0 8h 10.42.0.18 k3s-1
nginx-deployment-d6dcb985-dqbn9 1/1运行0 8h 10.42.1.26 k3s-2
nginx-deployment-d6dcb985-vpf79 1/1运行0 8h 10.42.1.25 k3s-2

k3s kubectl-o全方位获取服务：

NAME            TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)   AGE   SELECTOR
kubernetes      ClusterIP   10.43.0.1       <none>        443/TCP   5d    <none>
nginx-service   ClusterIP   10.43.218.234   <none>        80/TCP    8h    app=nginx

NAME TYPE CLUSTER-IP EXTERNAL-IP端口年龄选择器
kubernetes ClusterIP 10.43.0.1 443/TCP 5d
nginx服务群集IP 10.43.218.234 80/TCP 8h应用程序=nginx

k3s kubectl-o宽通道入口：

NAME            CLASS    HOSTS            ADDRESS          PORTS   AGE
nginx-ingress   <none>   argo.corbe.net   207.148.25.119   80      8h

NAME类主机地址端口年龄
nginx入口argo.corbe.net 207.148.25.119 80 8h

k3s kubectl描述部署nginx部署：

Name:                   nginx-deployment
Namespace:              default
CreationTimestamp:      Mon, 22 Feb 2021 15:19:07 +0000
Labels:                 app=nginx
Annotations:            deployment.kubernetes.io/revision: 2
Selector:               app=nginx
Replicas:               4 desired | 4 updated | 4 total | 4 available | 0 unavailable
StrategyType:           RollingUpdate
MinReadySeconds:        0
RollingUpdateStrategy:  25% max unavailable, 25% max surge
Pod Template:
  Labels:  app=nginx
  Containers:
   nginx:
    Image:        nginx
    Port:         8080/TCP
    Host Port:    0/TCP
    Environment:  <none>
    Mounts:       <none>
  Volumes:        <none>
Conditions:
  Type           Status  Reason
  ----           ------  ------
  Available      True    MinimumReplicasAvailable
  Progressing    True    NewReplicaSetAvailable
OldReplicaSets:  <none>
NewReplicaSet:   nginx-deployment-7848d4b86f (4/4 replicas created)
Events:
  Type    Reason             Age    From                   Message
  ----    ------             ----   ----                   -------
  Normal  ScalingReplicaSet  2m43s  deployment-controller  Scaled up replica set nginx-deployment-7848d4b86f to 1
  Normal  ScalingReplicaSet  2m43s  deployment-controller  Scaled down replica set nginx-deployment-d6dcb985 to 3
  Normal  ScalingReplicaSet  2m43s  deployment-controller  Scaled up replica set nginx-deployment-7848d4b86f to 2
  Normal  ScalingReplicaSet  2m40s  deployment-controller  Scaled down replica set nginx-deployment-d6dcb985 to 2
  Normal  ScalingReplicaSet  2m40s  deployment-controller  Scaled up replica set nginx-deployment-7848d4b86f to 3
  Normal  ScalingReplicaSet  2m40s  deployment-controller  Scaled down replica set nginx-deployment-d6dcb985 to 1
  Normal  ScalingReplicaSet  2m40s  deployment-controller  Scaled up replica set nginx-deployment-7848d4b86f to 4
  Normal  ScalingReplicaSet  2m38s  deployment-controller  Scaled down replica set nginx-deployment-d6dcb985 to 0

Name:nginx部署
名称空间：默认值
CreationTimestamp:2021年2月22日星期一15:19:07+0000
标签：app=nginx
注释：deployment.kubernetes.io/revision:2
选择器：app=nginx
副本：需要4份|更新4份|共4份|可用4份|不可用0份
策略类型：RollingUpdate
最小就绪秒：0
滚动更新策略：最多25%不可用，最多25%喘振
Pod模板：
标签：app=nginx
容器：
nginx:
图片：nginx
端口：8080/TCP
主机端口：0/TCP
环境：
挂载：
卷数：
条件：
类型状态原因
----           ------  ------
可用真最小值ReplicasAvailable
正在进行的True NewReplicateSetAvailable
旧复制集：
NewReplicaSet:nginx-deployment-7848d4b86f（创建了4/4个副本）
活动：
从消息中键入原因年龄
----    ------             ----   ----                   -------
正常扩展复制集2m43s部署控制器将复制集nginx-deployment-7848d4b86f扩展为1
正常扩展复制集2m43s部署控制器将复制集nginx-deployment-d6dcb985缩减为3
正常扩展复制集2m43s部署控制器将复制集nginx-deployment-7848d4b86f扩展为2
正常缩放复制集2m40s部署控制器将复制集nginx-deployment-d6dcb985缩小为2
正常扩展复制集2m40s部署控制器将复制集nginx-deployment-7848d4b86f扩展到3
正常缩放复制集2m40s部署控制器将复制集nginx-deployment-d6dcb985缩小为1
正常扩展复制集2m40s部署控制器将复制集nginx-deployment-7848d4b86f扩展到4
正常缩放复制集2m38s部署控制器将复制集nginx-deployment-d6dcb985缩小为0

您将获得404，这意味着在您使用nginx或入口之前，请求将一直发出

现在您的入口可能有问题

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: nginx-ingress
  namespace: default
spec:
  rules:
  - host: argo.corbe.net
    http:
      paths:
      - backend:
          serviceName: ningx
          servicePort: 80

检查您正在使用的服务名称

serviceName:ningx

它应该是nginx服务

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: nginx-ingress
  namespace: default
spec:
  rules:
  - host: argo.corbe.net
    http:
      paths:
      - backend:
          serviceName: nginx-service
          servicePort: 80

---

整个流程将类似于：

DNS>ingres>service（nginx服务）>deployment（nginx部署）或pod副本。

默认情况下，nginx映像侦听端口80上的连接

$ kubectl run --image nginx
$ kubectl exec -it nginx -- bash
root@nginx:/# apt update
    **output hidden**
root@nginx:/# apt install iproute2
    **output hidden**
root@nginx:/# ss -lunpt
Netid     State      Recv-Q     Send-Q         Local Address:Port         Peer Address:Port                                     
tcp       LISTEN     0          0                    0.0.0.0:80                0.0.0.0:*        users:(("nginx",pid=1,fd=7))    
tcp       LISTEN     0          0                          *:80                      *:*        users:(("nginx",pid=1,fd=8))    

请注意，打开的是端口80，而不是端口8080。 这意味着您的服务配置错误，因为它转发到端口8080

您应该将目标端口设置为80，如下所示：

apiVersion: v1
kind: Service
metadata:
  name: nginx-service
spec:
  selector:
    app: nginx
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80    # <- HERE

作为备份，您可以使用不同名称的服务：

- backend:
    serviceName: ningx

将其更改为服务的实际名称，如下所示：

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: nginx-ingress
  namespace: default
spec:
  rules:
  - host: argo.corbe.net
    http:
      paths:
      - backend:
          serviceName: ningx-service
          servicePort: 80

应用更改，它现在应该可以工作了

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: nginx-ingress
  namespace: default
spec:
  rules:
  - host: argo.corbe.net
    http:
      paths:
      - backend:
          serviceName: ningx-service
          servicePort: 80