@Marvin I am using prefect-worker helm chart with the following values.yaml

worker:
  apiConfig: server
  image:
    pullSecrets:
      - gitlab-registry-secret
  config:
    workPool: minikube-work-pool
  serverApiConfig:
    apiUrl: <http://prefect-server.prefect.svc.cluster.local:4200/api>

but the executed jobs can’t pull the image from my registry

Error: ImagePullBackOff

It looks like you're experiencing an

ImagePullBackOff

error, which generally means that Kubernetes can't pull the Docker image from the specified registry. This issue is often related to authentication or network configuration problems. Here are a few steps you can take to troubleshoot and resolve this: 1. Verify `imagePullSecrets`: Make sure that the

gitlab-registry-secret

exists in the same namespace as your worker jobs and has the correct credentials to access your registry. 2. Check Secret Format: Ensure that the secret is correctly formatted as a Docker registry secret. You can create such a secret using:

shell
   kubectl create secret docker-registry gitlab-registry-secret \
     --docker-server=<your-registry-server> \
     --docker-username=<your-username> \
     --docker-password=<your-password> \
     --docker-email=<your-email>

3. Network Access: Verify that your Kubernetes cluster nodes have network access to your container registry. This could involve checking firewall rules or ensuring proper network configuration. 4. Correct API URL: Ensure that

<http://prefect-server.prefect.svc.cluster.local:4200/api>

is accessible from inside the cluster, as this may impact operations related to your Prefect server. Although it's not directly linked to the

ImagePullBackOff

, it's good to ensure configurations are correct. 5. Logs and Describe Pods: Check the logs and the pod descriptions for any additional errors or warnings. Use the following commands:

shell
   kubectl describe pod <your-pod-name>
   kubectl logs <your-pod-name>

6. Pull Manually for Testing: Try to manually pull the image using a Kubernetes node or another machine that has the same network and authentication setup to ensure there's no issue with the registry credentials or access. Give these steps a try, and you should be able to resolve the

ImagePullBackOff

issue. If the problem persists, it might be useful to double-check your Helm chart and Kubernetes configurations one more time. Let me know if you have further questions or run into additional issues!

@Marvin Seems like the issue is within the job that get created, which can’t pull from the registry

If the issue is specifically with the job created by Prefect that can't pull the image from your registry, here's what you can do to troubleshoot further: 1. Ensure Job Spec has `imagePullSecrets`: Confirm that the Kubernetes job specification includes the

imagePullSecrets

that references

gitlab-registry-secret

. This is necessary for the job to authenticate with your private registry. 2. Inspect Job Configuration: - Check how the Prefect Helm chart specifies the job and ensure it propagates the image pull secrets correctly. - Look into the YAML definitions related to Prefect jobs to ensure they should be using those secrets. 3. Manually Test the Image Pull: Try running a simple Pod using the same image and

imagePullSecrets

outside of Prefect to see if the issue is reproducible. This can help determine if the problem is within Prefect's configuration or the overall Kubernetes setup. 4. Check Default Namespace: Make sure that the job is running in the namespace where

gitlab-registry-secret

is defined. If necessary, you can create the secret in multiple namespaces or use the image pull secret across namespaces. 5. Review Prefect Worker Specs: - Review any Prefect worker specifications that might alter how jobs are spawned or deployed in Kubernetes. - Double-check any Prefect documentation or examples related to deploying jobs with custom images. 6. Logs and Events: - Gather more insights from Kubernetes events and logs associated with the job. You can check these with:

shell
     kubectl describe job <job-name>
     kubectl logs job/<job-name>

If you've ticked all these boxes and the problem persists, it would be beneficial to also ensure that the Prefect worker is deploying jobs with the correct settings from your Helm chart. Checking Prefect's documentation around Helm deployments with custom Docker images might reveal additional necessary configurations. I hope one of these steps helps resolve the issue. Remember, debugging Kubernetes environments can be cryptic like reading Vogon poetry, but there's always a logical solution!