拉取本地镜像以在 Kubernetes 中运行 Pod [英] Pull a local image to run a pod in Kubernetes

问题描述

我有以下由 Dockerfile 创建的图像:

REPOSITORY TAG IMAGE ID 创建大小ruby/lab 最新的 f1903b1508cb 2 小时前 729.6 MB

我有以下 YAML 文件:

apiVersion: extensions/v1beta1种类:部署元数据:名称:ruby-部署规格:复制品:2模板:元数据:标签:应用程序:红宝石规格:容器:- 名称:ruby-app图片:红宝石/实验室imagePullPolicy: IfNotPresent端口:- 容器端口:4567

当我创建部署时，我在 pod 中获得了以下信息:

ruby-deployment-3830038651-sa4ii 0/1 ImagePullBackOff 0 7mruby-deployment-3830038651-u1tvc 0/1 ImagePullBackOff 0 7m

和错误 Failed to pull image "ruby/lab:latest": Error: image ruby​​/lab not found 从下面:

 8m 2m 6 {kubelet minikube} spec.containers{ruby} Normal Pulling pull image "ruby/lab:latest"8m 2m 6 {kubelet minikube} spec.containers{ruby} 警告失败 无法拉取镜像ruby/lab:latest":错误:未找到镜像 ruby​​/lab8m 2m 6 {kubelet minikube} 警告 FailedSync 同步 pod 时出错，跳过:无法使用 ErrImagePull 为ruby"启动容器":错误:图像 ruby​​/lab 未找到"

真的有必要为此在 docker 中注册吗?我只想在本地进行测试并将我的代码/存储库传递给朋友以进行测试

谢谢

解决方案

您可以通过运行

将您的 docker 客户端指向 VM 的 docker 守护进程

eval $(minikube docker-env)

然后就可以正常构建镜像，正常使用kubectl创建kubernetes资源了.确保你有

imagePullPolicy: IfNotPresent

在您的 YAML 或 JSON 规范中.

此外，还有一个标志可以将不安全的注册表传递给 minikube 虚拟机.但是，这必须在您第一次创建机器时指定.

minikube start --insecure-registry

您可能还想在使用私有注册表时阅读此内容http://kubernetes.io/docs/user-guide/images/>

I have the following image created by a Dockerfile:

REPOSITORY   TAG      IMAGE ID       CREATED       SIZE 
ruby/lab     latest   f1903b1508cb   2 hours ago   729.6 MB

And I have my following YAML file:

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: ruby-deployment
spec:
  replicas: 2
  template:
    metadata:
      labels:
        app: ruby
    spec:
      containers:
      - name: ruby-app
        image: ruby/lab
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 4567

When I create the deployment I got the following info in the pods:

ruby-deployment-3830038651-sa4ii   0/1       ImagePullBackOff   0          7m
ruby-deployment-3830038651-u1tvc   0/1       ImagePullBackOff   0          7m

And the error Failed to pull image "ruby/lab:latest": Error: image ruby/lab not found from below:

 8m            2m              6       {kubelet minikube}      spec.containers{ruby}   Normal          Pulling         pulling image "ruby/lab:latest"
 8m            2m              6       {kubelet minikube}      spec.containers{ruby}   Warning         Failed          Failed to pull image "ruby/lab:latest": Error: image ruby/lab not found
 8m            2m              6       {kubelet minikube}                              Warning         FailedSync      Error syncing pod, skipping: failed to "StartContainer" for "ruby" with ErrImagePull: "Error: image ruby/lab not found"

Is really necessary to have registry in docker for this? I just want to make test locally and pass my code/repo to a friend for testing purposes

Thanks

解决方案

You can point your docker client to the VM's docker daemon by running

eval $(minikube docker-env)

Then you can build your image normally and create your kubernetes resources normally using kubectl. Make sure that you have

imagePullPolicy: IfNotPresent

in your YAML or JSON specs.

Additionally, there is a flag to pass in insecure registries to the minikube VM. However, this must be specified the first time you create the machine.

minikube start --insecure-registry

You may also want to read this when using a private registry http://kubernetes.io/docs/user-guide/images/

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