127.0.0.1:5000:GetSockopt:在Minikube中拒绝连接

Question

在我本地的Ubuntu工作站上使用minikube和docker，我在minikube web UI中得到以下错误：

Failed to pull image "localhost:5000/samples/myserver:snapshot-180717-213718-0199": rpc error: code = Unknown desc = Error response from daemon: Get http://localhost:5000/v2/: dial tcp 127.0.0.1:5000: getsockopt: connection refused

在我创建了下面的部署配置之后：

kubectl apply -f hello-world-deployment.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: hello-world
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: hello-world
        tier: backend
    spec:
      containers:
      - name: hello-world
        image: localhost:5000/samples/myserver:snapshot-180717-213718-0199
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
        env:
        - name: GET_HOSTS_FROM
          value: dns
        ports:
        - containerPort: 8080

REPOSITORY                                 TAG                           IMAGE ID            CREATED             SIZE
samples/myserver                           latest                        aa0a1388cd88        About an hour ago   435MB
samples/myserver                           snapshot-180717-213718-0199   aa0a1388cd88        About an hour ago   435MB
k8s.gcr.io/kube-proxy-amd64                v1.10.0                       bfc21aadc7d3        3 months ago        97MB

eval $(minikube docker-env)

基于此：

https://github.com/docker/for-win/issues/624

我补充说：

    "InsecureRegistry": [
        "localhost:5000",
        "127.0.0.1:5000"
    ],

$ kubectl port-forward --namespace kube-system $(kubectl get po -n kube-system | grep kube-registry-v0 | awk '{print $1;}') 5000:5000

$ kubectl port-forward --namespace kube-system $(kubectl get po -n kube-system | grep kube-registry-v0 | awk '{print $1;}') 5000:5000
Forwarding from 127.0.0.1:5000 -> 5000
Forwarding from [::1]:5000 -> 5000

根据BMitch的回答，我现在尝试创建一个本地docker存储库，并通过以下方式向其推送一个图像：

$ docker run -d -p 5000:5000 --restart always --name registry registry:2
$ docker pull ubuntu
$ docker tag ubuntu localhost:5000/ubuntu:v1
$ docker push localhost:5000/ubuntu:v1

接下来，当我处理docker图像时，我会得到：

$ docker images
REPOSITORY                                      TAG                           IMAGE ID            CREATED             SIZE
ubuntu                                          latest                        74f8760a2a8b        4 days ago          82.4MB
localhost:5000/ubuntu                           v1                            74f8760a2a8b        4 days ago          82.4MB

然后，我将deploymentconfig hello-world-deployment.yaml更新为：

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: hello-world
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: hello-world
        tier: backend
    spec:
      containers:
      - name: hello-world
        image: localhost:5000/ubuntu:v1
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
        env:
        - name: GET_HOSTS_FROM
          value: dns
        ports:
        - containerPort: 8080

kubectl create -f hello-world-deployment.yaml

 Failed to pull image "localhost:5000/ubuntu:v1": rpc error: code = Unknown desc = Error response from daemon: Get http://localhost:5000/v2/: dial tcp 127.0.0.1:5000: getsockopt: connection refused 

所以Minikube似乎不允许看到我刚刚创建的本地注册表？

Answer 1

看起来您的计算机上的localhost和minikube VM上下文中使用的localhost面临一个问题。要使注册表工作，您必须设置一个额外的端口转发。

如果您的minikube安装当前由于多次尝试修复注册表问题而中断，我建议重新启动minikube环境：

minikube stop && minikube delete && rm -fr $HOME/.minikube &&  minikube start

接下来，获取kube注册表yaml文件：

curl -O https://gist.githubusercontent.com/coco98/b750b3debc6d517308596c248daf3bb1/raw/6efc11eb8c2dce167ba0a5e557833cc4ff38fa7c/kube-registry.yaml

kubectl create -f kube-registry.yaml

minikube ssh && curl localhost:5000

kubectl port-forward --namespace kube-system $(kubectl get po -n kube-system | grep kube-registry-v0 | awk '{print $1;}') 5000:5000

如果您想从您的机器上共享您的私人注册表，您可能有兴趣共享minikube博客条目的本地注册表。