fix: datadog csi driver check error

[alexezio]

Description

This PR fixes a configuration mismatch in the datadog_csi_driver integration's auto-discovery configuration that causes the check to fail when deployed via Kubernetes Autodiscovery.

Problem

When the Datadog Agent attempts to auto-discover and configure the datadog_csi_driver check in Kubernetes environments, it fails with the following error:

Error: Detected 1 error while loading configuration model `InstanceConfig`:
openmetrics_endpoint
  Field required

Root Cause

The datadog_csi_driver integration uses OpenMetricsBaseCheckV2 as its base class, which expects the configuration field openmetrics_endpoint. However, the auto_conf.yaml file was incorrectly configured with the legacy field name prometheus_url:

Before:

instances:
  - prometheus_url: http://%%host%%:5000/metrics

This mismatch occurred because:

1. The check implementation (check.py) correctly uses OpenMetricsBaseCheckV2
2. The config spec (spec.yaml) correctly uses template: instances/openmetrics
3. The generated config model expects openmetrics_endpoint: str (required field)
4. But the auto-discovery config file used the old prometheus_url field name

Solution

Update auto_conf.yaml to use the correct field name openmetrics_endpoint to match the OpenMetrics V2 API:

After:

instances:
  - openmetrics_endpoint: http://%%host%%:5000/metrics

Testing

The fix has been validated to ensure:

• ✅ The configuration model successfully loads with openmetrics_endpoint
• ✅ No linter errors introduced
• ✅ Existing tests continue to pass

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Add the qa/skip-qa label if the PR doesn't need to be tested during QA.
• If you need to backport this PR to another branch, you can add the backport/<branch-name> label to the PR and it will automatically open a backport PR once this one is merged

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.01%. Comparing base (bd0fc42) to head (4584fb9).
⚠️ Report is 29 commits behind head on master.

Additional details and impacted files

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[adel121]

Thanks for fixing this.

I tested it and it is working fine after the fix:

=== Series ===
  METRIC                                                 TYPE   TIMESTAMP   VALUE  TAGS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
  datadog.csi_driver.node_publish_volume_attempts.count  count  1763996417  0      docker_image:gcr.io/datadoghq/csi-driver:1.0.0, endpoint:http://10.244.0.106:5000/metrics, image_id:gcr.io/datadoghq/csi-driver@sha256:fe7aefd6618b032014bbd8c96bf8dd15a2cb62dd75c50703e7c92868508ebcee, image_name:gcr.io/datadoghq/csi-driver, image_tag:1.0.0, kube_container_name:csi-node-driver, kube_daemon_set:datadog-csi-driver-node-server, kube_namespace:default, kube_ownerref_kind:daemonset, kube_qos:BestEffort, path:/var/run/datadog, pod_phase:running, short_image:csi-driver, status:success, type:APMSocketDirectory  
  datadog.csi_driver.node_publish_volume_attempts.count  count  1763996417  0      docker_image:gcr.io/datadoghq/csi-driver:1.0.0, endpoint:http://10.244.0.106:5000/metrics, image_id:gcr.io/datadoghq/csi-driver@sha256:fe7aefd6618b032014bbd8c96bf8dd15a2cb62dd75c50703e7c92868508ebcee, image_name:gcr.io/datadoghq/csi-driver, image_tag:1.0.0, kube_container_name:csi-node-driver, kube_daemon_set:datadog-csi-driver-node-server, kube_namespace:default, kube_ownerref_kind:daemonset, kube_qos:BestEffort, path:/var/run/datadog, pod_phase:running, short_image:csi-driver, status:success, type:DSDSocketDirectory  

=== Service Checks ===
  CHECK                                  HOSTNAME  TIMESTAMP   STATUS  MESSAGE  TAGS                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
  datadog.csi_driver.openmetrics.health  minikube  1763996415  OK               docker_image:gcr.io/datadoghq/csi-driver:1.0.0, endpoint:http://10.244.0.106:5000/metrics, image_id:gcr.io/datadoghq/csi-driver@sha256:fe7aefd6618b032014bbd8c96bf8dd15a2cb62dd75c50703e7c92868508ebcee, image_name:gcr.io/datadoghq/csi-driver, image_tag:1.0.0, kube_container_name:csi-node-driver, kube_daemon_set:datadog-csi-driver-node-server, kube_namespace:default, kube_ownerref_kind:daemonset, kube_qos:BestEffort, pod_phase:running, short_image:csi-driver  
  datadog.csi_driver.openmetrics.health  minikube  1763996416  OK               docker_image:gcr.io/datadoghq/csi-driver:1.0.0, endpoint:http://10.244.0.106:5000/metrics, image_id:gcr.io/datadoghq/csi-driver@sha256:fe7aefd6618b032014bbd8c96bf8dd15a2cb62dd75c50703e7c92868508ebcee, image_name:gcr.io/datadoghq/csi-driver, image_tag:1.0.0, kube_container_name:csi-node-driver, kube_daemon_set:datadog-csi-driver-node-server, kube_namespace:default, kube_ownerref_kind:daemonset, kube_qos:BestEffort, pod_phase:running, short_image:csi-driver  



  Running Checks
  ==============
    
    datadog_csi_driver (1.0.0)
    --------------------------
      Instance ID: datadog_csi_driver:44aaca37f4c10601 [OK]
      Configuration Source: file:/etc/datadog-agent/conf.d/datadog_csi_driver.d/auto_conf.yaml[0]
      Total Runs: 2
      Metric Samples: Last Run: 2, Total: 4
      Events: Last Run: 0, Total: 0
      Service Checks: Last Run: 1, Total: 2
      Average Execution Time : 12ms
      Last Execution Date : 2025-11-24 15:00:16.555 UTC (1763996416555)
      Last Successful Execution Date : 2025-11-24 15:00:16 UTC (1763996416000)
      
  Check Worker Utilization
  ========================
    No worker utilization data available

  Metadata
  ========
    config.hash: datadog_csi_driver:44aaca37f4c10601
    config.provider: file
    config.source: /etc/datadog-agent/conf.d/datadog_csi_driver.d/auto_conf.yaml[0]
2025-11-24 15:00:19 UTC | CORE | INFO | (comp/api/api/apiimpl/server.go:39 in stopServer) | Stopped HTTP server 'CMD API Server'
2025-11-24 15:00:19 UTC | CORE | INFO | (pkg/aggregator/aggregator.go:777 in run) | Stopping aggregator

Thank you