Hook-image-puller not use the specific mirror

JupyterHub Zero to JupyterHub on Kubernetes
1

I tried to initialize my jupyterhub with k8s at the basis of z2jh.

Before I used it as above, I changed all registry.k8s.io to m.daocloud.io/registry.k8s.io

helm upgrade jhub jupyterhub/ --values=config.yaml

config.yaml

singleuser:
  networkPolicy:
    enabled: false
  defaultUrl: "/lab"
  extraEnv:
    EDITOR: "vim"
    SHELL: "/bin/zsh"
  startTimeout: 300
  storage:
    capacity: 2Gi
    dynamic:
      storageClass: nfs-csi
    extraVolumes:
      - name: shm-volume
        mountPath: /dev/shm
        emptyDir:
          medium: Memory
          sizeLimit: "2Gi"
  image:
    # You should replace the "latest" tag with a fixed version from:
    # https://hub.docker.com/r/jupyter/datascience-notebook/tags/
    # Inspect the Dockerfile at:
    # https://github.com/jupyter/docker-stacks/tree/HEAD/datascience-notebook/Dockerfile
    name: hub.dlcloud.info/blcc/base-notebook
    tag: v1
    pullPolicy: Never
  # `cmd: null` allows the custom CMD of the Jupyter docker-stacks to be used
  # which performs further customization on startup.
  cmd: null

kubectl get pods
# then get
NAME                              READY   STATUS             RESTARTS   AGE
continuous-image-puller-nqw5s     1/1     Running            0          94m
hook-image-puller-4fkx6           0/1     ImagePullBackOff   0          47m
hub-7b8486d6c9-mfvcb              0/1     Pending            0          80m
proxy-64dcf6c4f6-d7htm            1/1     Running            0          94m
user-scheduler-7955497f75-6fr9p   1/1     Running            0          94m
user-scheduler-7955497f75-7gsqk   1/1     Running            0          94m

kubectl describe pods hook-image-puller-...

  Normal   Pulling    42m (x4 over 48m)     kubelet            Pulling image "registry.k8s.io/pause:3.9"
  Warning  Failed     40m (x4 over 47m)     kubelet            Error: ErrImagePull
  Warning  Failed     40m (x4 over 44m)     kubelet            Error: ImagePullBackOff

I expected to pull from my mirror website, but it still pulled from registry.k8s. At the same time, I have downloaded the images and taged the same name, strangely not use it but repulled it.

2

Please could you share your full Z2JH config with us (apart from secrets), and tell us which version of Z2JH you’re using?

3

Thank you for offering to help! Here’s the information you need:

I used the Z2JH version is v3.3.8。

And my full config.yaml removed secret and OAuth here .

proxy:
  chp:
    networkPolicy:
      enabled: false
  service:
    nodePorts:
      http: 30000

debug:
  enabled: true

hub:
  networkPolicy:
    enabled: false
      # extraVolumes:
      # - name: hub-db-dir
      # persistentVolumeClaim:
      # claimName: hub-db-dir
  config:
    admin_users:
      - jianghy
      - zhonger
    JupyerHub:
      authenticator_class: gitlab # oauthenticator.gitlab.GitLabOAuthenticator
    GitLabAuthenticator:
        # some config there ...


cull:
  enabled: true
  maxAge: 172800
  timeout: 600
  every: 60

singleuser:
  networkPolicy:
    enabled: false
  defaultUrl: "/lab"
  extraEnv:
    EDITOR: "vim"
    SHELL: "/bin/zsh"
  startTimeout: 300
  storage:
    capacity: 2Gi
    dynamic:
      storageClass: nfs-csi
    extraVolumes:
      - name: shm-volume
        mountPath: /dev/shm
        emptyDir:  
          medium: Memory
          sizeLimit: "2Gi"
  image:
    name: hub.dlcloud.info/blcc/base-notebook
    tag: v1
    pullPolicy: Never
  cmd: null
4

Look at the chart’s default values, you will find the image registry.k8s.io/pause be referenced someplace. Configure to use your own image there.

5

I changed default values.yaml with vim instruction :%s/m.daocloud.io/registry.k8s/registry.k8s/g and reinstalled it but not worked.

  pause:
    containerSecurityContext:
      runAsUser: 65534 # nobody user
      runAsGroup: 65534 # nobody group
      allowPrivilegeEscalation: false
    image:
      name: m.daocloud.io/registry.k8s.io/pause
      # tag is automatically bumped to new patch versions by the
      # watch-dependencies.yaml workflow.
      #
      # If you update this, also update scheduling.userPlaceholder.image.tag
      #
      tag: "3.9"
      pullPolicy: Never
      pullSecrets: []

hook-image-puller-* still try to pull registry.k8s.io/pause rather than my own configuration.

And I found a strange thing is I changed my base-notebook version from v1 to v2 (config.yaml) , but still pulled v1 rather than v2.

6

It sounds like your changes weren’t deployed. What command are you running? If you delete your deployment, check that everything is deleted, and redeploy, does it work?

7

Directory as follow:

.
├── config.yaml
├── jupyterhub # z2jh chart pulled

Command is helm upgrade --install jhub jupyterhub/ --values=config.yaml