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Add Env valueFrom function #743

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mayooot
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@mayooot mayooot commented Jun 7, 2024

The purpose of this pr is to provide valueFrom functionality for CRD, like: environment-variable-expose-pod-information

The main change is to the CRD definition under api/nvidia/xxx_types.go, from the custom struct EnvVar to corev1.EnvVar.

Why did you add this feature?

We modified the k8s-device-plugin code to support multiple gpu spec via valueFrom. And for the gpu-operator modification, we've tested it ourselves to make sure it's not a problem.

The main reason for this is that we believe that the EnvVar struct should be consistent with the K8s API instead of using a custom struct.

- Change Env field in NvidiaDriver spec from []EnvVar to []corev1.EnvVar to ensure consistency with Kubernetes core API types.
- Regenerate deepcopy code to reflect the changes in the API type.

This change improves integration and compatibility with Kubernetes environments and tooling.
…tests

Updated internal/state/driver_test.go and controllers/object_controls_test.go to use corev1.EnvVar instead of nvidiav1alpha1.EnvVar for environment variables.

- Changed Env: []nvidiav1alpha1.EnvVar{...} to Env: []corev1.EnvVar{...}.

This refactoring aligns with the use of standard corev1.EnvVar across the project.
@shivamerla
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@mayooot one of the primary reason was that ClusterPolicy CRD is already overloaded with many operands and close to 256KB limit. We cannot upgrade operator anymore after this limit. We need to get this information by other means and handle the translation in the code while updating the spec.

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