No, a ConfigMap in Kubernetes is namespace-scoped, meaning it can only be used within the namespace in which it was created. You cannot directly use the same ConfigMap across multiple namespaces.
If you need the same configuration in different namespaces, you will have to create separate instances of the ConfigMap in each namespace. You can do this by applying the same YAML definition in each desired namespace or by using a script to automate the creation of the ConfigMap in multiple namespaces.
