Yep, K8s has managed DNS, much like Nomad allows you to have.
But if that's a feature that you want, you can even use Docker Swarm which I mentioned in another comment here, which basically gives you the same thing, so that you can reference other containers by their names.
Of course, it's a bit simpler than Nomad, so if you're already using Nomad then there's no point in moving away from it, though this still illustrates that there are plenty of simpler options than K8s!
But if that's a feature that you want, you can even use Docker Swarm which I mentioned in another comment here, which basically gives you the same thing, so that you can reference other containers by their names.
Of course, it's a bit simpler than Nomad, so if you're already using Nomad then there's no point in moving away from it, though this still illustrates that there are plenty of simpler options than K8s!