Docker for Mac - Kubernetes - 参考本地镜像 [英] Docker for Mac - Kubernetes - reference local image

问题描述

我正在使用 Docker for Mac 和 Kubernetes 支持，我正在努力创建一个引用本地构建的映像的 Kubernetes 部署.

I am using Docker for Mac with Kubernetes support and I'm struggling to create a Kubernetes Deployment that references a locally built image.

docker 镜像的输出:

REPOSITORY  TAG     IMAGE 
test        latest  2c3bdb36a5ed

我的部署.yaml:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: helloworld-deployment
spec:
  selector:
    matchLabels:
      app: helloworld
  replicas: 1
  template:
    metadata:
      labels:
        app: helloworld
    spec:
      containers:
      - name: aaa
        image: test:latest
        ports:
        - containerPort: 8080

当我运行 kubectl apply -f deplyment.yaml pods 被创建但是:

When i run kubectl apply -f deplyment.yaml pods are created but:

helloworld-deployment-764b8b85d8-2c4kl   0/1       ImagePullBackOff   0          
helloworld-deployment-764b8b85d8-rzq7l   0/1       ImagePullBackOff   0

这些 Pod 之一的

kubectl describe 给出:

kubectl describe of one of these pods gives:

  Normal   Scheduled              20s               default-scheduler            Successfully assigned helloworld-deployment-79f66d97c6-7tj2x to docker-for-desktop
  Normal   SuccessfulMountVolume  19s               kubelet, docker-for-desktop  MountVolume.SetUp succeeded for volume "default-token-72f44"
  Normal   BackOff                16s               kubelet, docker-for-desktop  Back-off pulling image "test:latest"
  Warning  Failed                 16s               kubelet, docker-for-desktop  Error: ImagePullBackOff
  Normal   Pulling                4s (x2 over 19s)  kubelet, docker-for-desktop  pulling image "test:latest"
  Warning  Failed                 2s (x2 over 17s)  kubelet, docker-for-desktop  Failed to pull image "test:latest": rpc error: code = Unknown desc = Error response from daemon: pull access denied for test, repository does not exist or may require 'docker login'
  Warning  Failed                 2s (x2 over 17s)  kubelet, docker-for-desktop  Error: ErrImagePull

有趣的是，如果我尝试运行托管在 dockerhub 上的一些图像，那么一切都很好，我还尝试使用 skaffold 并且它也很有效......

What is interesting is that if i try to run some image hosted on dockerhub then everything is fine, I also tried to use skaffold and it also works like a charm...

我看到一些关于 minikube 的类似问题，其中解决方案是使用 minikube docker 守护程序来构建图像，以便可以从 Kubernetes 集群中引用它们.

I see some similar issues regarding minikube where the solution is to use the minikube docker daemon to build images so that they can be referenced from the Kubernetes cluster.

我想避免设置本地存储库，那么如何使其与 Docker 的 Kubernetes 一起使用?

I would like to avoid setting up local repo, so how can I make it work with Docker's Kubernetes ?

推荐答案

我能够通过将 imagePullPolicy 设置为 Never 来运行本地图像.

I was able to run a local image by setting the imagePullPolicy to Never.

例如:

apiVersion: v1
kind: Pod
metadata:
  name: local-image-test
spec:
  containers:
  - name: local-image-container
    image: local-image:latest
    imagePullPolicy: Never

(归功于 https://github.com/kubernetes/kubernetes/issues/1293#issuecomment-357326426 用于此解决方案)

(Credit to https://github.com/kubernetes/kubernetes/issues/1293#issuecomment-357326426 for this solution)

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