How to Pass an Untyped String to a Typed Pointer in Kubernetes PersistentVolumeClaim?

Passing Untyped String to Typed Pointer in Kubernetes PersistentVolumeClaim

When attempting to create a Kubernetes PersistentVolumeClaim (PVC) and specify the StorageClassName parameter, developers may encounter an error stating "Cannot convert (untyped string constant) to *string [duplicate]." This arises from a mismatch between the expected pointer type of the parameter and the attempt to pass an untyped string constant directly.

To resolve this issue, one must first declare a string local variable and assign the untyped string constant to it. Subsequently, the address of the string local variable should be passed as the parameter argument using the & operator.

<code class="go">persistentvolumeclaim := &apiv1.PersistentVolumeClaim{

    // Declare a string variable and assign the untyped constant
    manualStr := "manual"

    ObjectMeta: metav1.ObjectMeta{
        Name: "mysql-pv-claim",
    },
    Spec: apiv1.PersistentVolumeClaimSpec{
        StorageClassName: &manualStr, // Pass the address of the string local variable
    },
}</code>

By following this approach, the developer ensures that the parameter argument matches the expected pointer type, resolving the conversion error and allowing the PVC to be created successfully.

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