ImagePullBackOff：无法将我的私有Docker镜像拉入Kubernetes集群

Question

我试图将我自己的私有Docker图像包含在Kubernetes清单中，但我收到了ImagePullBackOff错误。

我不确定我是否： - 为我的secrets使用了错误的数据 - 在某处丢失了命令 - 在某些特定名称或标签中使用了错误的数据等

该映像托管在Azure Container Registry（aka.ACR）上。

这是我得到的错误......接下来是我试图让它工作的步骤。

Tests-MBP:k8s test$ clear && kubectl describe pod acounts-api-7fcc5d9bb-826ht

Events:
  Type     Reason                 Age                From                         Message
  ----     ------                 ----               ----                         -------
  Normal   Scheduled              69s                default-scheduler            Successfully assigned acounts-api-7fcc5d9bb-826ht to docker-for-desktop
  Normal   SuccessfulMountVolume  69s                kubelet, docker-for-desktop  MountVolume.SetUp succeeded for volume "default-token-ffrhq"
  Normal   BackOff                30s (x2 over 64s)  kubelet, docker-for-desktop  Back-off pulling image "hornet/accounts.api"
  Warning  Failed                 30s (x2 over 64s)  kubelet, docker-for-desktop  Error: ImagePullBackOff
  Normal   Pulling                16s (x3 over 68s)  kubelet, docker-for-desktop  pulling image "hornet/accounts.api"
  Warning  Failed                 11s (x3 over 64s)  kubelet, docker-for-desktop  Failed to pull image "hornet/accounts.api": rpc error: code = Unknown desc = Error response from daemon: pull access denied for hornet/accounts.api, repository does not exist or may require 'docker login'
  Warning  Failed                 11s (x3 over 64s)  kubelet, docker-for-desktop  Error: ErrImagePull
Tests-MBP:k8s test$ 

我创造了一个secret：

Tests-MacBook-Pro:k8s test$ kubectl get secrets
NAME                  TYPE                                  DATA   AGE
default-token-ffrhq   kubernetes.io/service-account-token   3      3d
hornet-acr-auth       kubernetes.io/dockerconfigjson        1      16h
Tests-MacBook-Pro:k8s test$ 

使用此命令：

Tests-MacBook-Pro:k8s test$ kubectl create secret docker-registry hornet-acr-auth --docker-server <snip>.azurecr.io --docker-username 9858ae98-<snip> --docker-password 10abe15a-<snip> --docker-email [email protected]
secret/hornet-acr-auth created

并获得该用户名/密码，我followed these instructions并做了这个...

Tests-MacBook-Pro:k8s test$ ./azure-credentials.sh 
Retrying role assignment creation: 1/36
Service principal ID: 9858ae98-<snip>
Service principal password: 10abe15a-<snip>

和我的.sh剧本的前几行......

#!/bin/bash

ACR_NAME=<snip> // this is the name of the ACR (e.g. foo) .. NOT foo.azurecr.io
SERVICE_PRINCIPAL_NAME=acr-service-principal

...

最后..这就是我试图在我的deployment清单中创建.yaml ....

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: acounts-api
spec:
  selector:
    matchLabels:
      app: acounts-api
  replicas: 1
  template:
    metadata:
      labels:
        app: acounts-api
    spec:
      imagePullSecrets:
      - name: hornet-acr-auth
      containers:
      - name: acounts-api
        image: hornet/accounts.api
        imagePullPolicy: Always
        ports:
        - containerPort: 80
          name: http
        - containerPort: 5301
          name: data-ingest
        env:
        - name: "RavenDb__ServerUrl"
          value: "http://ravendb-data-lb:5200"
---

是的，我已经确认存储库存在于ACR中。

Answer 1

图像hornet/accounts.api实际上看起来像是来自Docker Hub的图像，这不是你的情况，对吧？

我想你的图像名称应该像<snip>.azurecr.io/accounts.api或者可能是<snip>.azurecr.io/hornet/accounts.api？