docker - Kubernetes 不从私有(private)注册表中提取图像

Question

我正在尝试将镜像从我的私有(private)注册表 (harbor) 部署到我的 Kubernetes 环境。注册表已成功设置并且已经包含我的图像。

为了提供上下文，这是我的部署文件:

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  labels:
    name: sps-app
  name: sps-app
spec:
  replicas: 1
  template:
    metadata:
      labels:
        name: sps-app
    spec:
      containers:
      - image: repo-harbor.test.com/sps_project/spsapp:23
        env:
        - name: MONGODB_URL
          value: "mongodb://mongo.default.svc.cluster.local:27017/user"
        name: sps-app
        ports:
        - containerPort: 4000
          name: sps-app
      imagePullSecrets:
      - name: harbor 

我已经使用下面的命令创建了我的 harbor secret

kubectl create secret docker-registry harbor \
--docker-server=https://repo-harbor.test.com \
--docker-username=admin \
--docker-password='xxxxxx!'

但是，当我对我的部署执行 kubectl apply -f 时，它总是会进入图像拉取回退。

经过进一步调查，我检查了 pod 的日志，它指出存在 x509 认证错误。

Kubernetes 事件:

Events:
  Type     Reason          Age              From                                           Message
  ----     ------          ----             ----                                           -------
  Normal   Scheduled       3m               default-scheduler                              Successfully assigned default/private-image-test-1 to df56bd02-5e0e-4644-a565-c233ac2404fe
  Normal   Pulling         2m (x3 over 3m)  kubelet, df56bd02-5e0e-4644-a565-c233ac2404fe  pulling image "jur01-harbor.acepod.com/sps_project/spsapp:2"
  Warning  Failed          2m (x3 over 3m)  kubelet, df56bd02-5e0e-4644-a565-c233ac2404fe  Failed to pull image "jur01-harbor.acepod.com/sps_project/spsapp:2": rpc error: code = Unknown desc = Error response from daemon: Get https://jur01-harbor.acepod.com/v2/: x509: certificate signed by unknown authority
  Warning  Failed          2m (x3 over 3m)  kubelet, df56bd02-5e0e-4644-a565-c233ac2404fe  Error: ErrImagePull
  Warning  Failed          2m (x4 over 3m)  kubelet, df56bd02-5e0e-4644-a565-c233ac2404fe  Error: ImagePullBackOff
  Normal   SandboxChanged  2m (x7 over 3m)  kubelet, df56bd02-5e0e-4644-a565-c233ac2404fe  Pod sandbox changed, it will be killed and re-created.
  Normal   BackOff         2m (x5 over 3m)  kubelet, df56bd02-5e0e-4644-a565-c233ac2404fe  Back-off pulling image "jur01-harbor.acepod.com/sps_project/spsapp:2"

此时，我不确定如何解决这个问题。谁能解决这个问题？

Answer 1

根本原因

位于 jur01-harbor.acepod.com 的镜像注册中心使用自签名证书，Docker 不信任它。

解决方案

将该图像注册表提供的自定义 CA 证书复制到名为 /etc/docker/certs.d/jur01-harbor.acepod.com/ 的目录中的所有 Kubernetes 节点。

引用:Docker docs / Test an insecure registry .