<@ULVA73B9P> why am I getting this helm charts err...
# ask-marvin
k
@Marvin why am I getting this helm charts error for the worker? error:
Error: INSTALLATION FAILED: execution error at (prefect-worker/templates/deployment.yaml:70:17): A Work Pool Name is required (worker.config.workPool)
helm yaml:
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worker:
  cloudApiConfig:
    accountId: 3da
    workspaceId: 396
    apiKeySecret:
      # -- prefect API secret name
      name: prefect-api-key-shiftsmart-secret
      # -- prefect API secret key
      key: key
  config:
    workPool: default-work-pool
  replicaCount: 6
  resources:
    limits:
      cpu: 1000m
      memory: 1Gi
    requests:
      cpu: 100m
      memory: 256Mi
fullnameOverride: base-prefect-workerv2
1
m
The error you're encountering suggests that the Helm chart is not properly recognizing the
workPool
configuration. Here’s a step-by-step approach to rectify this issue: 1. Ensure Correct Indentation: YAML is very sensitive to indentation. Verify that the indentation under
worker:
is correct. It appears correctly indented in your example, but it's worth double-checking. 2. Correct Config Format: Verify that the provided format aligns well with the expected structure in the Helm template files. 3. Work Pool Creation: Confirm that the work pool
default-work-pool
exists and is correctly set up. You can do this via the Prefect CLI:
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bash
    prefect work-pool create default-work-pool
4. Helm Values File: Simplified values example for reference:
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yaml
    worker:
      cloudApiConfig:
        accountId: 3da
        workspaceId: 396
        apiKeySecret:
          name: prefect-api-key-shiftsmart-secret
          key: key
      config:
        workPool: default-work-pool
      replicaCount: 6
      resources:
        limits:
          cpu: 1000m
          memory: 1Gi
        requests:
          cpu: 100m
          memory: 256Mi
    fullnameOverride: base-prefect-workerv2
5. Inspect Template: Check the Helm template file
deployment.yaml
at line 70:
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yaml
    {{- if .Values.worker.config.workPool -}}
    ...
    {{- else -}}
    {{- fail "A Work Pool Name is required (worker.config.workPool)" -}}
    {{- end -}}
Ensure the value
.Values.worker.config.workPool
is correctly referenced in
values.yaml
. For further detailed information on configuring work pools or resolving potential issues, refer to the Prefect Work Pools Documentation. If you follow these steps and still encounter issues, it might be beneficial to check for specific Helm chart examples or community discussions around similar issues.
k
@Marvin despite having worker pods ready and the helm chart specifying the work-pool by name, the work-pool is not showing any workers? What could be the cause
m
Given that your worker pods are running but are not appearing in the work pool, the issue could be due to several potential factors: 1. Worker Registration: Ensure that the workers are correctly registered with the specified work pool. You can verify this using the Prefect CLI:
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bash
    prefect work-pool inspect default-work-pool
2. Worker Polling: Make sure that the workers are actively polling the Prefect API. You can check logs in your worker pods to see if they indicate successful communication and polling from the API. 3. Configuration Matching: Confirm that the work pool name in your Helm values aligns perfectly with the work pool name in the Prefect UI or CLI. Mismatched names could result in a failure to register workers. 4. Prefect API Connectivity: Ensure that there is no network issue hindering the worker pods from reaching the Prefect API. You can check connectivity by running a simple network command (e.g.,
curl
or
ping
) from within the worker pod. 5. Logs Investigation: Examine the logs of your worker pods for any warning or error messages. Look for logs that might indicate registration failures or issues interacting with the work pool. 6. Work Pool Status: Verify that the work pool is in a Ready state. If the work pool is paused or in another state, workers might not be able to register until the pool is active. References from Prefect documentation: - Starting a worker - Work pools By following these steps, you should be able to pinpoint the issue or at least gather more information for further troubleshooting.
k
@Marvin After following those steps, my workers are still not showing up in the work pool inspection. Why would a worker not get associated with a work pool?
m
Several reasons could be causing workers not to associate with a work pool despite being deployed correctly: 1. Environment Variable Misconfiguration: Ensure that the worker pods have the required environment variables set correctly, particularly those related to the Prefect API and work pool configuration. 2. Authentication Issues: Verify that your workers can authenticate to the Prefect API. Network issues or misconfigured API keys might cause silent failures. 3. Worker Startup Parameters: Make sure that the worker startup parameters correctly specify the work pool. Check your Helm chart's template logic and resulting worker deployments. Incorrect parameters could cause workers to register in different or default pools. 4. Worker Logs: Check worker pod logs for any errors or warnings. Logs might contain hints about registration or operational issues that aren't immediately obvious. Given the documentation and issue searches, try the following steps to diagnose and ideally solve the issue: ### Check Helm Chart Configuration Ensure that your Helm values, particularly under
worker
, correctly specify the work pool and relevant configuration.
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yaml
worker:
  cloudApiConfig:
    accountId: 3da
    workspaceId: 396
    apiKeySecret:
      name: prefect-api-key-shiftsmart-secret
      key: key
  config:
    workPool: default-work-pool
  replicaCount: 6
  resources:
    limits:
      cpu: 1000m
      memory: 1Gi
    requests:
      cpu: 100m
      memory: 256Mi
fullnameOverride: base-prefect-workerv2
### Verify Worker Logs Check the logs of a running worker pod for any issues related to work pool registration or communication with the Prefect API.
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bash
kubectl logs <worker-pod-name> -n <namespace>
Look for logs indicating successful registration with the work pool or errors about misconfiguration or API issues. ### Prefect CLI Inspection Use the Prefect CLI to inspect the worker and work pool statuses. 1. List work pools:
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bash
    prefect work-pool ls
2. Inspect specific work pool:
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bash
    prefect work-pool inspect default-work-pool
3. Check worker registration:
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bash
    prefect worker ls --pool default-work-pool
4. View work pool details:
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bash
    prefect work-pool describe default-work-pool
### Test Direct Worker Registration Manually run a worker from your local machine, specifying the work pool, to see if it registers correctly.
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bash
prefect worker start --pool default-work-pool
This will help determine if the issue is specific to the Kubernetes environment or worker configuration more broadly. ### Network and API Configuration Ensure no network policies or configurations are blocking outbound traffic from worker pods to the Prefect API. ### Further Reading & References - Prefect Work Pools Documentation - Prefect Workers Tutorial If these steps don’t resolve the issue, consult Prefect community forums or open an issue on the Prefect GitHub repository for more tailored assistance.
k
Had to update the Helm chart version to 5.16!!! 🏳️