带有证书管理器和自签名 ClusterIssuer 的 Kubernetes TLS Ingress 路由不起作用

Question

我正在尝试在我们的 Kubernetes 集群中使用 TLS。我遵循了“在 Azure Kubernetes 服务上创建 HTTPS 入口控制器”（https://docs.microsoft.com/en-us/azure/aks/ingress-tls）的MS 文档。

我已经部署了一个 nginx-ingress 控制器，添加了 DNS 记录并安装了证书管理器。我创建了一个 SelfSigned 的 CA ClusterIssuer，还创建了 2 个演示应用程序。

当我创建入口路由时，证书会自动创建，并且“就绪”状态为“True”，但路由不起作用 - 我无法访问部署了主机名的演示应用程序 ( https://hello-world-ingress.<Ingress_Service_DNS_Name>)。

自签名 ClusterIssuer：

apiVersion: cert-manager.io/v1alpha2
kind: ClusterIssuer
metadata:
  name: selfsigned-issuer
spec:
  selfSigned: {}

入口路线：

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: hello-world-ingress
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/rewrite-target: /$2
    cert-manager.io/cluster-issuer: selfsigned-issuer
spec:
  tls:
  - hosts:
    - hello-world-ingress.<Ingress_Service_DNS_Name>
    secretName: tls-secret
  rules:
  - host: hello-world-ingress.<Ingress_Service_DNS_Name>
    http:
      paths:
      - backend:
          serviceName: aks-helloworld
          servicePort: 80
        path: /(.*)
      - backend:
          serviceName: aks-helloworld-two
          servicePort: 80
        path: /hello-world-two(/|$)(.*)
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: hello-world-ingress-static
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/rewrite-target: /static/$2
    cert-manager.io/cluster-issuer: selfsigned-issuer
spec:
  tls:
  - hosts:
    - hello-world-ingress.<Ingress_Service_DNS_Name>
    secretName: tls-secret
  rules:
  - host: hello-world-ingress.<Ingress_Service_DNS_Name>
    http:
      paths:
      - backend:
          serviceName: aks-helloworld
          servicePort: 80
        path: /static(/|$)(.*)

我在我们的域中的 GoDaddy 上为<Ingress_Service_DNS_Name>（但使用真实姓名）创建了一个 DNS 记录，该记录指向外部入口控制器服务 IP 地址。

其余的安装和部署与文档相同。

有谁知道为什么它不起作用？

- - - - - - - - 编辑 - - - - - - - - - - -

入口控制器日志：

I0330 06:03:16.780788       7 event.go:281] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"ingress-basic", Name:"hello-world-ingress", UID:"488a4c00-7072-11ea-a46c-1a8c7fb34cf9", APIVersion:"networking.k8s.io/v1beta1", ResourceVersion:"37375594", FieldPath:""}): type: 'Normal' reason: 'UPDATE' Ingress ingress-basic/hello-world-ingressI0330 06:03:46.358414       7 event.go:281] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"ingress-basic", Name:"hello-world-ingress-static", UID:"48b91e0e-7072-11ea-a46c-1a8c7fb34cf9", APIVersion:"networking.k8s.io/v1beta1", ResourceVersion:"37375687", FieldPath:""}): type: 'Normal' reason: 'UPDATE' Ingress ingress-basic/hello-world-ingress-static
I0330 06:03:46.386930       7 event.go:281] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"ingress-basic", Name:"hello-world-ingress", UID:"488a4c00-7072-11ea-a46c-1a8c7fb34cf9", APIVersion:"networking.k8s.io/v1beta1", ResourceVersion:"37375688", FieldPath:""}): type: 'Normal' reason: 'UPDATE' Ingress ingress-basic/hello-world-ingress
I0330 06:04:16.783483       7 event.go:281] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"ingress-basic", Name:"hello-world-ingress", UID:"488a4c00-7072-11ea-a46c-1a8c7fb34cf9", APIVersion:"networking.k8s.io/v1beta1", ResourceVersion:"37375802", FieldPath:""}): type: 'Normal' reason: 'UPDATE' Ingress ingress-basic/hello-world-ingress
I0330 06:04:16.788210       7 event.go:281] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"ingress-basic", Name:"hello-world-ingress-static", UID:"48b91e0e-7072-11ea-a46c-1a8c7fb34cf9", APIVersion:"networking.k8s.io/v1beta1", ResourceVersion:"37375803", FieldPath:""}): type: 'Normal' reason: 'UPDATE' Ingress ingress-basic/hello-world-ingress-static
I0330 06:04:46.584035       7 event.go:281] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"ingress-basic", Name:"hello-world-ingress", UID:"488a4c00-7072-11ea-a46c-1a8c7fb34cf9", APIVersion:"networking.k8s.io/v1beta1", ResourceVersion:"37375904", FieldPath:""}): type: 'Normal' reason: 'UPDATE' Ingress ingress-basic/hello-world-ingress
I0330 06:04:46.587677       7 event.go:281] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"ingress-basic", Name:"hello-world-ingress-static", UID:"48b91e0e-7072-11ea-a46c-1a8c7fb34cf9", APIVersion:"networking.k8s.io/v1beta1", ResourceVersion:"37375905", FieldPath:""}): type: 'Normal' reason: 'UPDATE' Ingress ingress-basic/hello-world-ingress-static
I0330 06:05:16.938952       7 event.go:281] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"ingress-basic", Name:"hello-world-ingress", UID:"488a4c00-7072-11ea-a46c-1a8c7fb34cf9", APIVersion:"networking.k8s.io/v1beta1", ResourceVersion:"37376008", FieldPath:""}): type: 'Normal' reason: 'UPDATE' Ingress ingress-basic/hello-world-ingress
I0330 06:05:16.938975       7 event.go:281] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"ingress-basic", Name:"hello-world-ingress-static", UID:"48b91e0e-7072-11ea-a46c-1a8c7fb34cf9", APIVersion:"networking.k8s.io/v1beta1", ResourceVersion:"37376007", FieldPath:""}): type: 'Normal' reason: 'UPDATE' Ingress ingress-basic/hello-world-ingress-static
I0330 06:05:46.337384       7 event.go:281] Event(v1.ObjectReference{Kind:"Ingress", Namespace:"ingress-basic", Name:"hello-world-ingress-static", UID:"48b91e0e-7072-11ea-a46c-1a8c7fb34cf9", APIVersion:"networking.k8s.io/v1beta1", ResourceVersion:"37376095", FieldPath:""}): type: 'Normal' reason: 'UPDATE' Ingress ingress-basic/hello-world-ingress-static

证书管理器日志：

I0330 06:16:19.953430       1 reflector.go:432] external/io_k8s_client_go/tools/cache/reflector.go:108: Watch close - *v1alpha2.Order total 0 items received
I0330 06:16:19.989382       1 reflector.go:278] external/io_k8s_client_go/tools/cache/reflector.go:108: forcing resync
I0330 06:16:39.861201       1 metrics.go:304] cert-manager/metrics "msg"="attempting to clean up metrics for recently deleted certificates"  
I0330 06:16:39.861233       1 metrics.go:307] cert-manager/metrics "msg"="active certificates is still uninitialized"  
I0330 06:16:46.353253       1 controller.go:129] cert-manager/controller/ingress-shim "msg"="syncing item" "key"="ingress-basic/hello-world-ingress" 
I0330 06:16:46.354661       1 metrics.go:385] cert-manager/metrics "msg"="incrementing controller sync call count"  "controllerName"="ingress-shim"
I0330 06:16:46.355124       1 sync.go:163] cert-manager/controller/ingress-shim "msg"="certificate already exists for ingress resource, ensuring it is up to date" "related_resource_kind"="Certificate" "related_resource_name"="tls-secret-selfsigned" "related_resource_namespace"="ingress-basic" "resource_kind"="Ingress" "resource_name"="hello-world-ingress" "resource_namespace"="ingress-basic" 
I0330 06:16:46.356804       1 sync.go:176] cert-manager/controller/ingress-shim "msg"="certificate resource is already up to date for ingress" "related_resource_kind"="Certificate" "related_resource_name"="tls-secret-selfsigned" "related_resource_namespace"="ingress-basic" "resource_kind"="Ingress" "resource_name"="hello-world-ingress" "resource_namespace"="ingress-basic" 
I0330 06:16:46.357190       1 controller.go:135] cert-manager/controller/ingress-shim "msg"="finished processing work item" "key"="ingress-basic/hello-world-ingress" 
I0330 06:16:46.358636       1 controller.go:129] cert-manager/controller/ingress-shim "msg"="syncing item" "key"="ingress-basic/hello-world-ingress-static" 
I0330 06:16:46.361782       1 metrics.go:385] cert-manager/metrics "msg"="incrementing controller sync call count"  "controllerName"="ingress-shim"
I0330 06:16:46.367596       1 sync.go:163] cert-manager/controller/ingress-shim "msg"="certificate already exists for ingress resource, ensuring it is up to date" "related_resource_kind"="Certificate" "related_resource_name"="tls-secret-selfsigned" "related_resource_namespace"="ingress-basic" "resource_kind"="Ingress" "resource_name"="hello-world-ingress-static" "resource_namespace"="ingress-basic" 
I0330 06:16:46.368271       1 sync.go:171] cert-manager/controller/ingress-shim "msg"="certificate resource is not owned by this ingress. refusing to update non-owned certificate resource for ingress" "related_resource_kind"="Certificate" "related_resource_name"="tls-secret-selfsigned" "related_resource_namespace"="ingress-basic" "resource_kind"="Ingress" "resource_name"="hello-world-ingress-static" "resource_namespace"="ingress-basic" 
I0330 06:16:46.368424       1 controller.go:135] cert-manager/controller/ingress-shim "msg"="finished processing work item" "key"="ingress-basic/hello-world-ingress-static" 
I0330 06:16:47.581355       1 reflector.go:278] external/io_k8s_client_go/tools/cache/reflector.go:108: forcing resync
I0330 06:16:49.383317       1 reflector.go:278] external/io_k8s_client_go/tools/cache/reflector.go:108: forcing resync

唯一看起来可能有问题的是证书管理器日志：

"certificate resource is not owned by this ingress. refusing to update non-owned certificate resource for ingress" "related_resource_kind"="Certificate" "related_resource_name"="tls-secret-selfsigned" "related_resource_namespace"="ingress-basic" "resource_kind"="Ingress" "resource_name"="hello-world-ingress-static" "resource_namespace"="ingress-basic" "

谢谢，

阿菲克

Answer 1

根据提供的信息，问题在于两个入口使用相同的自签名证书。

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您在这里想要实现的是您希望从两个不同的位置管理您的证书。正如文档所述：

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部署 TLS 入口资源 - \xe2\x80\x9c 有两种主要方法可以\n 执行此操作：在入口上使用 ingress-shim 注释或直接\n 创建证书资源。\xe2\x80\x9d

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所以你hello-world-ingress可以使用注释：

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cert-manager.io/cluster-issuer: selfsigned-issuer\n

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但helo-world-ingress-static不能，因为证书已经在secretName: tls-secret.

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因此，hello-world-ingress-static您应该删除注释：

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cert-manager.io/cluster-issuer: selfsigned-issuer\n

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因为它secretName已经由其他资源创建和管理，因此会产生利益冲突。在本例中CertificateRequest来自另一个 Ingress。

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让我知道这是否有帮助。

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