☰

Kubernetes Cert-Manager 过期证书

tag-icon • tag-icon kubernetes google-kubernetes-engine cert-manager
Kubernetes Cert-Manager 过期证书

我继承了一个 GKE Kubernetes 环境，并且几天来一直在尝试解决这个问题，但不幸的是，我不知道下一步该尝试什么。

集群设置为使用 cert-manager（通过 helm 安装）将 Let's Encrypt 证书应用于集群。出于某种原因，这在两年多的时间里一直运行良好，但从 4 月 16 日开始，我开始在浏览器中看到有关集群所有节点的 SSL 警告。

当我运行时，kubectl describe certificates site-cloud-tls证书似乎已经更新但尚未应用于入口流量。

Name:         site-cloud-tls
Namespace:    cs
Labels:       <none>
Annotations:  <none>
API Version:  certmanager.k8s.io/v1alpha1
Kind:         Certificate
Metadata:
  Creation Timestamp:  2019-06-02T09:55:05Z
  Generation:          34
  Owner References:
    API Version:           extensions/v1beta1
    Block Owner Deletion:  true
    Controller:            true
    Kind:                  Ingress
    Name:                  cs-nginx
    UID:                   7f312326-851c-11e9-8bf0-4201ac10000c
  Resource Version:        541365011
  UID:                     7f36cc40-851c-11e9-8bf0-4201ac10000c
Spec:
  Dns Names:
    site.cloud (changed name but is correct)
  Issuer Ref:
    Kind:       ClusterIssuer
    Name:       letsencrypt-dns
  Secret Name:  site-cloud-tls
Status:
  Conditions:
    Last Transition Time:  2022-04-24T05:26:13Z
    Message:               Certificate is up to date and has not expired
    Reason:                Ready
    Status:                True
    Type:                  Ready
  Not After:               2022-06-15T17:01:48Z
Events:                    <none>

kubectl describe ingress
Name:             cs-nginx
Namespace:        cs
Address:          192.168.1.32
Default backend:  default-http-backend:80 (10.16.3.12:8080)
TLS:
  site-cloud-tls terminates site.cloud (changed naming but seems correct)
Rules:
  Host                       Path  Backends
  ----                       ----  --------
  site.cloud   
                             /   site:8080 (10.10.10.10:8080)

Annotations:                 certmanager.k8s.io/cluster-issuer: letsencrypt-dns
                             kubernetes.io/ingress.class: nginx
                             nginx.ingress.kubernetes.io/ssl-redirect: true
                             nginx.org/websocket-services: datahub
Events:                      <none>

我们确实有一个临时环境也受到了影响。我尝试重新安装 cert-manager，重新安装 nginx-ingress，但不幸的是无法恢复正常运行（可能是由于我犯了配置错误）。

3 天后，我不知道该怎么做，也不太了解 Kubernetes，不知道下一步该怎么做。有什么指导吗？我可以提供其他可能有用的信息吗？

谢谢你！

答案1

这里的问题是您指的是cluster-issuerIngress 定义中的一种：

Annotations:                 certmanager.k8s.io/cluster-issuer: letsencrypt-dns

但是你定义的对象是一种Certificate：

Name:         site-cloud-tls
Namespace:    cs
Labels:       <none>
Annotations:  <none>
API Version:  certmanager.k8s.io/v1alpha1
Kind:         Certificate

这就是为什么它不适用于 Ingress。你需要创建一个发行人Kubernetes 中的资源来处理证书。您可以在此处找到一个基本示例尖端 ClusterIssuer清单文件：

apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: letsencrypt-staging
spec:
  acme:
    # You must replace this email address with your own.
    # Let's Encrypt will use this to contact you about expiring
    # certificates, and issues related to your account.
    email: [email protected]
    server: https://acme-staging-v02.api.letsencrypt.org/directory
    privateKeySecretRef:
      # Secret resource that will be used to store the account's private key.
      name: example-issuer-account-key
    # Add a single challenge solver, HTTP01 using nginx
    solvers:
    - http01:
        ingress:
          class: nginx

相关内容