How do you migrate from Kustomize to Secrets in Kubernetes?

# Example of migrating a ConfigMap in Kustomize to a Kubernetes Secret

# Existing Kustomization.yaml using ConfigMap
apiVersion: v1
kind: ConfigMap
metadata:
  name: example-config
data:
  database-url: "mysql://user:pass@hostname:3306/dbname"

# New Secret definition to replace ConfigMap
apiVersion: v1
kind: Secret
metadata:
  name: example-secret
type: Opaque
data:
  database-url: bXlzcWxzOi8vdXNlcjpwYXNzQGhvc3RuYW1lOjMwNjAvZGJuYW1l  # base64 encoded

# To apply this new Secret, you can use:
kubectl apply -f example-secret.yaml