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我正在尝试在家中使用几个 rpi 来学习 kubernetes。我正在尝试在集群中运行 pihole，这已经奏效，现在我面临的问题是入口的重定向问题。

我的 ingress.yaml 文件输出：

## pihole.ingress.yml

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  namespace: pihole
  name: pihole-ingress
  annotations:
    # use the shared ingress-nginx
    kubernetes.io/ingress.class: "nginx"
    nginx.ingress.kubernetes.io/rewrite-target: / 
spec:
  rules:
  - host: pihole.192.168.1.230.nip.io
    http:
      paths:
      - path: /
        pathType: ImplementationSpecific
        backend:
          service:
            name: pihole-web
            port:
              number: 80

kubectl 的输出描述入口：

Name:             pihole-ingress
Namespace:        pihole
Address:          192.168.1.230
Default backend:  default-http-backend:80 (<error: endpoints "default-http-backend" not found>)
Rules:
  Host                         Path  Backends
  ----                         ----  --------
  pihole.192.168.1.230.nip.io  
                               /   pihole-web:80 (10.42.2.7:80)
Annotations:                   kubernetes.io/ingress.class: nginx
                               nginx.ingress.kubernetes.io/rewrite-target: /
Events:
  Type    Reason  Age                 From                      Message
  ----    ------  ----                ----                      -------
  Normal  Sync    18s (x12 over 11h)  nginx-ingress-controller  Scheduled for sync

get svc -n ingress-nginx 的输出

NAME                                 TYPE           CLUSTER-IP      EXTERNAL-IP     PORT(S)                      AGE
ingress-nginx-controller-admission   ClusterIP      10.43.240.186   <none>          443/TCP                      22h
ingress-nginx-controller             LoadBalancer   10.43.64.54     192.168.1.230   80:31093/TCP,443:30179/TCP   22h

我能够进入 pod 并卷曲集群 ip 以获得我期望的输出，但是当我尝试访问 pihole.192.168.1.230 时，我收到 504 错误。希望任何人都可以协助我的入口重定向到 pihole-web 服务。如果我可以提供任何其他信息，请告诉我。

编辑：

kubectl get po -n pihole -o wide
NAME                      READY   STATUS    RESTARTS   AGE   IP          NODE         NOMINATED NODE   READINESS GATES
pihole-7d4dc6b8d8-vclxz   1/1     Running   0          9h    10.42.2.8   node02.iad   <none>           <none>

kubectl get svc -n pihole
NAME             TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
pihole-web       ClusterIP   10.43.102.198   <none>        80/TCP,443/TCP   9h
pihole-dhcp      NodePort    10.43.191.110   <none>        67:32021/UDP     9h
pihole-dns-udp   NodePort    10.43.214.15    <none>        53:31153/UDP     9h
pihole-dns-tcp   NodePort    10.43.168.6     <none>        53:32754/TCP     9h

另一个编辑：由于最初发布了这个问题，并且进行了上述编辑，因此 pihole pod ip 从 10.42.2.7 更改为 10.42.2.8

我检查了入口控制器的日志并看到以下内容。希望有人能帮我破译这个：

2021/09/03 17:52:35 [error] 1938#1938: *3132346 upstream timed out (110: Operation timed out) while connecting to upstream, client: 10.42.1.1, server: pihole.192.168.1.230.nip.io, request: "GET / HTTP/1.1", upstream: "http://10.42.2.8:80/", host: "pihole.192.168.1.230.nip.io", referrer: "http://pihole.192.168.1.230.nip.io/"
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