I have a bunch of external rancher created k8s nodes/VMs but when trying to delete that cluster the virt-launcher pods are stuck terminating. Any way to somehow manually terminate them and then use the longhorn UI to remove their volumes?

One way is to delete the virtual machine pod with

--force

if it’s stuck in the “terminating” state. e.g.,

kubectl delete pod <pod_name> --force -n <namespace>