docker - 在 Kubernetes 中使用 dind 运行私有(private)仓库

Question

我尝试将我的私有(private) docker 镜像与 docker-dind 容器一起运行，以便能够从 Kubernetes 中的私有(private)镜像运行 docker 命令。我唯一的问题是 docker run 命令不读取 docker-secrets，因此要求运行 docker login 失败。如何将凭据传递给 docker run 命令？

这是我的 Kubernetes 部署部分:

  containers:
    - name: docker-private
      image: docker:20.10
      command: ['docker', 'run', '-p', '80:8000', 'private/image:latest' ]
      resources:
        requests:
          cpu: 10m
          memory: 256Mi
      env:
        - name: DOCKER_HOST
          value: tcp://localhost:2375
      envFrom:
         - secretRef:
             name: docker-secret-keys
    - name: dind-daemon
      image: docker:20.10-dind
      command: ["dockerd", "--host", "tcp://127.0.0.1:2375"]
      resources:
        requests:
          cpu: 20m
          memory: 512Mi
      securityContext:
        privileged: true
      volumeMounts:
        - name: docker-graph-storage
          mountPath: /var/lib/docker

编辑我确实有我的证书作为 Kubernetes secret ，我尝试将其安装到正在运行的 docker，但直到现在都没有成功 :(

apiVersion: v1
data:
  .dockerconfigjson: eyJhXXXXXXdoihfc9w8fwpeojfOFwhfoiuwehfo8wfhoi2ehfioewNlcm5hbWUiOiJlbGRhcmVudGas4hti45ytg45hgiVsZGFXXXXXXyQGVudG9yLmlvIiwiYXV0aCI6IlpXeGtZWEpsYm5SdmNqb3dObVl4WmpjM1lTMDVPRFZrTFRRNU5HRXRZVEUzTXkwMk5UYzBObVF4T0RjeFpUWT0ifX19XXXXXXXXXXX
kind: Secret
metadata:
  name: staging-docker-keys
  namespace: staging
  resourceVersion: "6383"
  uid: a7yduyd-xxxx-xxxx-xxxx-ae2ede3e4ed
type: kubernetes.io/dockerconfigjson

最终目标是让“内部 docker”(运行 private/image:latest)能够运行任何 docker 命令，而无需在每个命令之前登录。

Answer 1

docker:dind 将在 /certs 中创建 ca、服务器、客户端证书。只需创建 emptyDir 卷即可共享证书。

apiVersion: v1
kind: Pod
metadata:
  name: myapp
  labels:
    name: myapp
spec:
  volumes:
  - name: docker-tls-certdir
    emptyDir: {}
  containers:
    - name: docker-private
      image: docker:20.10
      command: ['docker', 'run', '-p', '80:8000', 'nginx' ]
      env:
        - name: DOCKER_HOST
          value: tcp://localhost:2375
      volumeMounts:
        - name: docker-tls-certdir
          mountPath: /certs
    - name: dind-daemon
      image: docker:20.10-dind
      command: ["dockerd", "--host", "tcp://127.0.0.1:2375"]
      securityContext:
        privileged: true
      volumeMounts:
        - name: docker-tls-certdir
          mountPath: /certs