How to find which role or clusterrole binded to a service account in Kubernetes?
You could do something like:
kubectl get rolebindings,clusterrolebindings \ --all-namespaces \ -o custom-columns='KIND:kind,NAMESPACE:metadata.namespace,NAME:metadata.name,SERVICE_ACCOUNTS:subjects[?(@.kind=="ServiceAccount")].name' | grep "<SERVICE_ACCOUNT_NAME>"
Replace the grep with then name of the service account you are looking for.