Question

我建立了一个Harbour注册中心，该注册中心已经成功运作了几个星期。对于每个部署和命名空间，我都有一个秘密，它带有〜/ .docker / config.json文件中的凭据，可以访问注册表。自从上周末以来，我再也无法从该注册表中提取图像了，我什么也没做！群集在GKE v1.12.5 btw上运行。

什么有效？ 我可以从本地机器的女巫docker推拉图像。

什么不起作用？ 我的Kubernetes群集无法再提取图像，并且超时运行。

Events:
  Type     Reason          Age                  From                                                       Message
  ----     ------          ----                 ----                                                       -------
  Normal   Scheduled       13m                  default-scheduler                                          Successfully assigned k8s-test7/nginx-k8s-test7-6f7b8fdd79-2ffmp to gke-k8s-cloudops-test-default-pool-72fccd21-hrhk
  Normal   SandboxChanged  12m                  kubelet, gke-k8s-cloudops-test-default-pool-72fccd21-hrhk  Pod sandbox changed, it will be killed and re-created.
  Warning  Failed          11m (x3 over 12m)    kubelet, gke-k8s-cloudops-test-default-pool-72fccd21-hrhk  Failed to pull image "core.k8s-harbor-test.my-domain.com/nginx-test/nginx:1.15.10": rpc error: code = Unknown desc = Error response from daemon: Get https://core.k8s-harbor-test.my-domain.com/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
  Warning  Failed          11m (x3 over 12m)    kubelet, gke-k8s-cloudops-test-default-pool-72fccd21-hrhk  Error: ErrImagePull
  Normal   BackOff         11m (x7 over 12m)    kubelet, gke-k8s-cloudops-test-default-pool-72fccd21-hrhk  Back-off pulling image "core.k8s-harbor-test.my-domain.com/nginx-test/nginx:1.15.10"
  Normal   Pulling         10m (x4 over 13m)    kubelet, gke-k8s-cloudops-test-default-pool-72fccd21-hrhk  pulling image "core.k8s-harbor-test.my-domain.com/nginx-test/nginx:1.15.10"
  Warning  Failed          3m2s (x38 over 12m)  kubelet, gke-k8s-cloudops-test-default-pool-72fccd21-hrhk  Error: ImagePullBackOff

deployment.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: nginx-k8s-test7
  namespace: k8s-test7
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: nginx-k8s-test7
    spec:
      containers:
      - name: nginx-k8s-test7
        image: core.k8s-harbor-test.my-domain.com/nginx-test/nginx:1.15.10
        volumeMounts:
          - name: webcontent
            mountPath: /usr/share/nginx/html
        ports:
        - containerPort: 80
      volumes:
        - name: webcontent
          configMap:
            name: webcontent
      imagePullSecrets:
      - name: harborcred
---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: webcontent
  namespace: k8s-test7
  annotations:
    volume.alpha.kubernetes.io/storage-class: default
spec:
  accessModes: [ReadWriteOnce]
  resources:
    requests:
      storage: 5Gi

秘密的“ harborcred”是每个名称空间的一部分，以便部署可以访问它。这个秘密是根据kubernetes文档创建的：

https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/

kubectl create secret generic harborcred \
    --from-file=.dockerconfigjson=~/.docker/config.json \
    --type=kubernetes.io/dockerconfigjson \
    --namespace=k8s-test7

任何帮助将不胜感激！

Answer 1

你好，乍一看，你能不能呢？

更改图片来源并使用一些公开的图片nginx验证您的部署没有其他问题。
https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/还提供了有关检查“秘密”的更多详细信息。
也请按照本文[How to debug "ImagePullBackOff"?

找到根本原因的其他步骤：




 1. Convert your secrets data:

   kubectl get secret harborcred -n k8s-test7
    --output="jsonpath={.data.\.dockerconfigjson}" | base64 --decode

 2. Compare the result of decoding your "auth" field from the 1 step  with your docker credentials using:


    echo "your auth data" | base64 --decode

 3. To find the root cause please use also:

    kubectl get events -n k8s-test7 | grep pull

请与您的日志共享。

港口注册处：无法在Kubernetes中提取图像

1 个答案: