How can I make elastic use the Azure Keyvault CSI driver to store secrets and not the default k8s secrets?
As far as I understand, Azure Keyvault CSI driver doesn't allow to write secret from Kubernetes to the Azure Key Vault instance. It only works the other way around, secrets are retrieved from Vault and then can be used in Kubernetes.
Also, I'm not sure how it is relevant for internal secrets managed by the operator to be stored in Azure Keyvault. This seems more relevant for secrets you provide to your cluster such as secrets to define users and roles. In that case, you might be interested in syncing mounted content with Kubernetes secret.