docker - 如何在 Kubernetes 部署中引用从 tar 文件加载的本地 docker 镜像？

Question

我正在尝试从本地 docker 镜像创建 Kubernetes 部署。并将 imagePullPolicy 设置为 Never，这样 Kubernetes 就会从通过 tar 导入的本地 docker 镜像中获取它。

环境

• >

   SingleNodeMaster  # one node deployment
  

但 Kubernetes 总是尝试获取私有(private)存储库，尽管存在本地 docker 镜像。

关于如何调试和解决问题以便 Kubernetes 从本地 docker 注册表中选择图像的任何指示？谢谢。

执行的步骤

• docker load -i images.tar
• docker images # 显示来自 myprivatehub.com/nginx/nginx-custom:v1.1.8 的图像
• kubectl create -f local-test.yaml with imagepullPolicy as Never

错误

Pulling  pod/nginx-custom-6499765dbc-2fts2   Pulling image "myprivatehub.com/nginx/nginx-custom:v1.1.8" 
Failed   pod/nginx-custom-6499765dbc-2fts2   Error: ErrImagePull   
Failed   pod/nginx-custom-6499765dbc-2fts2   Failed to pull image "myprivatehub.com/nginx/nginx-custom:v1.1.8": rpc error: code = Unknown desc = failed to pull and unpack image "myprivatehub.com/nginx/nginx-custom:v1.1.8": failed to resolve reference "myprivatehub.com/nginx/nginx-custom:v1.1.8": failed to do request: Head "https://myprivatehub.com/v2/nginx/nginx-custom/manifests/v1.1.8": dial tcp: lookup myprivatehub.com: no such host

docker pull <imagename>

Error response from daemon: Get https://myprivatehub.com/v2/: dial tcp: lookup myprivatehub.com on 172.31.0.2:53: no such host

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: nginx-custom
  namespace: default
spec:
  selector:
    matchLabels:
      run: nginx-custom
  replicas: 5 
  template:
    metadata:
      labels:
        run: nginx-custom
    spec:
      containers:
      - image: myprivatehub.com/nginx/nginx-custom:v1.1.8
        imagePullPolicy: Never
        name: nginx-custom
        ports:
        - containerPort: 80

Answer 1

这是因为容器运行时不同于 docker。我正在使用 containerd ，在将容器运行时切换到 docker 之后，它开始工作了。