即使用户重定向到正确的 url，kubernetes Ingress 仍显示“404 Not Found”答案

【问题标题】：kubernetes Ingress shows "404 Not Found" eventhough user redirected to correct url即使用户重定向到正确的 url，kubernetes Ingress 仍显示“404 Not Found”
【发布时间】：2020-10-15 13:49:50
【问题描述】：

我在 30001 上运行了 Nginx Ingress 服务 Kubernetes 版本 1.18.6 使用 VmWare 工作站配置的集群

我已经部署了 wordpress，并且我有一个 wordpress 入口

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: ingress-wordpress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /$2
    nginx.ingress.kubernetes.io/ssl-redirect: "false"
spec:
 rules:
   - http:
       paths:
          - path: /wordpress(/|$)(.*)
            backend:
              serviceName: wordpress
              servicePort: 80

这是我的 wordpress 部署

    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: wordpress
      labels:
        name: wordpress
    
    spec:
      template:
        # Pod definition
        metadata:
          name: wordpress
          labels:
            name: wordpress
        spec:
          containers:
            - name: wordpress
              image: wordpress
              volumeMounts:
                - mountPath: /var/www/html
                  name: wordpress-persistent-storage
              env:
              - name: WORDPRESS_DB_PASSWORD
                valueFrom:
                    secretKeyRef:
                      name: mysql-pass
                      key: password
              - name: WORDPRESS_DB_HOST
                value: "wordpress-mysql"
              - name: WORDPRESS_DB_USER
                value: "root"
          volumes:
        - name: wordpress-persistent-storage
          persistentVolumeClaim:
            claimName: wordpress-persistent-storage
  replicas: 2
  selector:
    matchLabels:
      name: wordpress

这是我的 nginx 入口控制器

apiVersion: apps/v1

kind: Deployment

metadata:

  name: nginx-ingress-controller

spec:

  replicas: 1

  selector:

    matchLabels:

      name: nginx-ingress

  template:

    metadata:

      labels:

        name: nginx-ingress

    spec:

      containers:

        - name: nginx-ingress-controller

          image: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.31.1

          args:

            - /nginx-ingress-controller

            - --configmap=$(POD_NAMESPACE)/nginx-configuration

          env:

            - name: POD_NAME

              valueFrom:

                fieldRef:

                  fieldPath: metadata.name

            - name: POD_NAMESPACE

              valueFrom:

                fieldRef:

                  fieldPath: metadata.namespace

          ports:

            - name: http

              containerPort: 80

            - name: https

              containerPort: 443

我的工作人员 IP 是 192.168.111.136,192.168.111.137

当我加载 http://worker-ip:30001/wordress

我被重定向到 http://worker-ip:30001/wp-admin/install.php 这当然是正确的网址。

但我的浏览器显示 404 Not Found

这是我的日志 --> kubectl logs nginx-ingress-controller-776d4c78f9-fkrgx -f

I1014 16:34:37.481750       6 event.go:278] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"default", Name:"ingress-wordpress", UID:"6051b54a-c359-469b-a34e-8ba1b0202ebd", APIVersion:"networking.k8s.io/v1beta1", ResourceVersion:"171471", FieldPath:""}): type: 'Normal' reason: 'DELETE' Ingress default/ingress-wordpress
I1014 16:34:37.535710       6 controller.go:155] Backend successfully reloaded.
I1014 16:34:40.458184       6 event.go:278] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"default", Name:"ingress-wordpress", UID:"0c6d67d5-a118-4391-b3ca-c8179fd12a44", APIVersion:"networking.k8s.io/v1beta1", ResourceVersion:"171482", FieldPath:""}): type: 'Normal' reason: 'CREATE' Ingress default/ingress-wordpress
I1014 16:34:40.815250       6 controller.go:139] Configuration changes detected, backend reload required.
I1014 16:34:40.865628       6 controller.go:155] Backend successfully reloaded.
10.32.0.1 - - [14/Oct/2020:16:34:52 +0000] "GET /wordpress HTTP/1.1" 302 0 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36" 458 0.012 [default-wordpress-80] [] 10.32.0.4:80 0 0.012 302 3fa7b1be573bb3db1e573953d7c29aba
I1014 16:35:05.344074       6 status.go:275] updating Ingress default/ingress-wordpress status from [] to [{192.168.111.136 }]
I1014 16:35:05.349635       6 event.go:278] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"default", Name:"ingress-wordpress", UID:"0c6d67d5-a118-4391-b3ca-c8179fd12a44", APIVersion:"networking.k8s.io/v1beta1", ResourceVersion:"171546", FieldPath:""}): type: 'Normal' reason: 'UPDATE' Ingress default/ingress-wordpress
10.44.0.0 - - [14/Oct/2020:16:44:14 +0000] "GET /wordpress HTTP/1.1" 302 0 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36" 439 0.009 [default-wordpress-80] [] 10.32.0.4:80 0 0.012 302 54c29a839541ce6e724ce004a0890942
10.32.0.1 - - [14/Oct/2020:16:45:35 +0000] "GET /wordpress HTTP/1.1" 302 0 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36" 458 0.012 [default-wordpress-80] [] 10.32.0.4:80 0 0.012 302 83335c2e98f6784efd051d81b84ad2ef
10.32.0.1 - - [14/Oct/2020:16:45:37 +0000] "GET /wordpress/ HTTP/1.1" 302 0 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36" 440 0.021 [default-wordpress-80] [] 10.44.0.3:80 0 0.020 302 db916b199d7f08379ac79122415855b7

如何解决这个问题？

【问题讨论】：

标签： wordpress kubernetes kubernetes-ingress nginx-ingress

【解决方案1】：

您的应用程序将您重定向到/wp-admin/。此路径不匹配任何 Ingress 规则，因此返回 404。

您还需要添加wp-admin HTTP 路径规则，以便将请求正确代理转发到 WordPress 容器。

【讨论】：